Update changelog.

CHANGELOG.md

@@ -1,3 +1,22 @@
+1.19.0:
+  - add "epoch summary"
+
+1.18.2:
+  - tidy up output of "block info"
+
+1.18.1:
+  - do not show execution payload if empty
+
+1.18.0:
+  - add "-ssz" option to "block info"
+  - add "block analyze" command
+  - support bellatrix
+
+1.17.0:
+  - add sync committee information to "chain time"
+  - add details of vote success to "attester inclusion --verbose"
+  - add "synccommittee inclusion"
+
 1.15.1:
   - provide sync committee slots in "chain status"
   - clarify that --connection should be a URL

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.16-buster as builder
+FROM golang:1.17-bullseye as builder
 
 WORKDIR /app
 
@@ -10,7 +10,9 @@ COPY . .
 
 RUN go build
 
-FROM debian:buster-slim
+FROM debian:bullseye-slim
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt install -y ca-certificates && apt-get clean && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 

cmd/attester/duties/input.go

@@ -63,17 +63,19 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
+	// Required data.
+	config, err := data.eth2Client.(eth2client.SpecProvider).Spec(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to obtain beacon chain configuration")
+	}
+	data.slotsPerEpoch = config["SLOTS_PER_EPOCH"].(uint64)
+
 	// Epoch
 	epoch := viper.GetInt64("epoch")
 	if epoch == -1 {
-		config, err := data.eth2Client.(eth2client.SpecProvider).Spec(ctx)
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to obtain beacon chain configuration")
-		}
-		data.slotsPerEpoch = config["SLOTS_PER_EPOCH"].(uint64)
 		slotDuration := config["SECONDS_PER_SLOT"].(time.Duration)
 		genesis, err := data.eth2Client.(eth2client.GenesisProvider).Genesis(ctx)
 		if err != nil {

cmd/attester/duties/input_internal_test.go

@@ -73,7 +73,7 @@ func TestInput(t *testing.T) {
 				"timeout": "5s",
 				"pubkey":  "0xa99a76ed7796f7be22d5b7e85deeb7c5677e88e511e0b337618f8c4eb61349b4bf2d153f649f7b53359fe8b94a38e44c",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/attester/inclusion/input.go

@@ -15,12 +15,14 @@ package attesterinclusion
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
 	spec "github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
 	"github.com/wealdtech/ethdo/util"
 )
 
@@ -34,9 +36,11 @@ type dataIn struct {
 	slotsPerEpoch uint64
 	// Operation.
 	eth2Client eth2client.Service
+	chainTime  chaintime.Service
 	epoch      spec.Epoch
 	account    string
 	pubKey     string
+	index      string
 }
 
 func input(ctx context.Context) (*dataIn, error) {
@@ -50,18 +54,24 @@ func input(ctx context.Context) (*dataIn, error) {
 	data.verbose = viper.GetBool("verbose")
 	data.debug = viper.GetBool("debug")
 
-	// Account or pubkey.
-	if viper.GetString("account") == "" && viper.GetString("pubkey") == "" {
-		return nil, errors.New("account or pubkey is required")
-	}
+	// Account.
 	data.account = viper.GetString("account")
+
+	// PubKey.
 	data.pubKey = viper.GetString("pubkey")
 
+	// ID.
+	data.index = viper.GetString("index")
+
+	if viper.GetString("account") == "" && viper.GetString("index") == "" && viper.GetString("pubkey") == "" {
+		return nil, errors.New("account, index or pubkey is required")
+	}
+
 	// Ethereum 2 client.
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	config, err := data.eth2Client.(eth2client.SpecProvider).Spec(ctx)
@@ -84,6 +94,9 @@ func input(ctx context.Context) (*dataIn, error) {
 		}
 	}
 	data.epoch = spec.Epoch(epoch)
+	if data.debug {
+		fmt.Printf("Epoch is %d\n", data.epoch)
+	}
 
 	return data, nil
 }

cmd/attester/inclusion/input_internal_test.go

@@ -61,11 +61,11 @@ func TestInput(t *testing.T) {
 			err:  "timeout is required",
 		},
 		{
-			name: "AccountMissing",
+			name: "IndexMissing",
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "account or pubkey is required",
+			err: "account, index or pubkey is required",
 		},
 		{
 			name: "ConnectionMissing",
@@ -73,7 +73,7 @@ func TestInput(t *testing.T) {
 				"timeout": "5s",
 				"pubkey":  "0xa99a76ed7796f7be22d5b7e85deeb7c5677e88e511e0b337618f8c4eb61349b4bf2d153f649f7b53359fe8b94a38e44c",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/attester/inclusion/output.go

@@ -1,4 +1,4 @@
-// Copyright © 2019, 2020 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -16,8 +16,9 @@ package attesterinclusion
 import (
 	"context"
 	"fmt"
+	"strings"
 
-	spec "github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 )
 
@@ -25,22 +26,67 @@ type dataOut struct {
 	debug            bool
 	quiet            bool
 	verbose          bool
-	slot             spec.Slot
+	attestation      *phase0.Attestation
+	slot             phase0.Slot
 	attestationIndex uint64
-	inclusionDelay   spec.Slot
+	inclusionDelay   phase0.Slot
 	found            bool
+	headCorrect      bool
+	headTimely       bool
+	sourceTimely     bool
+	targetCorrect    bool
+	targetTimely     bool
 }
 
 func output(ctx context.Context, data *dataOut) (string, error) {
+	buf := strings.Builder{}
 	if data == nil {
-		return "", errors.New("no data")
+		return buf.String(), errors.New("no data")
 	}
 
 	if !data.quiet {
 		if data.found {
-			return fmt.Sprintf("Attestation included in block %d, attestation %d (inclusion delay %d)", data.slot, data.attestationIndex, data.inclusionDelay), nil
+			buf.WriteString("Attestation included in block ")
+			buf.WriteString(fmt.Sprintf("%d", data.slot))
+			buf.WriteString(", index ")
+			buf.WriteString(fmt.Sprintf("%d", data.attestationIndex))
+			if data.verbose {
+				buf.WriteString("\nInclusion delay: ")
+				buf.WriteString(fmt.Sprintf("%d", data.inclusionDelay))
+				buf.WriteString("\nHead correct: ")
+				if data.headCorrect {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nHead timely: ")
+				if data.headTimely {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nSource timely: ")
+				if data.sourceTimely {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nTarget correct: ")
+				if data.targetCorrect {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nTarget timely: ")
+				if data.targetTimely {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+			}
+		} else {
+			buf.WriteString("Attestation not found")
 		}
-		return "Attestation not found", nil
 	}
-	return "", nil
+	return buf.String(), nil
 }

cmd/attester/inclusion/output_internal_test.go

@@ -44,7 +44,29 @@ func TestOutput(t *testing.T) {
 				attestationIndex: 456,
 				inclusionDelay:   7,
 			},
-			res: "Attestation included in block 123, attestation 456 (inclusion delay 7)",
+			res: `Attestation included in block 123, index 456`,
+		},
+		{
+			name: "Verbose",
+			dataOut: &dataOut{
+				verbose:          true,
+				found:            true,
+				slot:             123,
+				attestationIndex: 456,
+				inclusionDelay:   7,
+				headCorrect:      true,
+				headTimely:       false,
+				sourceTimely:     false,
+				targetCorrect:    true,
+				targetTimely:     true,
+			},
+			res: `Attestation included in block 123, index 456
+Inclusion delay: 7
+Head correct: ✓
+Head timely: ✕
+Source timely: ✕
+Target correct: ✓
+Target timely: ✓`,
 		},
 	}
 

cmd/attester/inclusion/process.go

@@ -1,4 +1,4 @@
-// Copyright © 2019, 2020 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,17 +14,16 @@
 package attesterinclusion
 
 import (
+	"bytes"
 	"context"
-	"encoding/hex"
 	"fmt"
-	"strings"
 
 	eth2client "github.com/attestantio/go-eth2-client"
 	api "github.com/attestantio/go-eth2-client/api/v1"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
 	"github.com/wealdtech/ethdo/util"
-	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 func process(ctx context.Context, data *dataIn) (*dataOut, error) {
@@ -32,34 +31,23 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		return nil, errors.New("no data")
 	}
 
-	var account e2wtypes.Account
 	var err error
-	if data.account != "" {
-		ctx, cancel := context.WithTimeout(ctx, data.timeout)
-		defer cancel()
-		_, account, err = util.WalletAndAccountFromPath(ctx, data.account)
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to obtain account")
-		}
-	} else {
-		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(data.pubKey, "0x"))
-		if err != nil {
-			return nil, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", data.pubKey))
-		}
-		account, err = util.NewScratchAccount(nil, pubKeyBytes)
-		if err != nil {
-			return nil, errors.Wrap(err, fmt.Sprintf("invalid public key %s", data.pubKey))
-		}
+
+	data.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(data.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(data.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(data.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to set up chaintime service")
 	}
 
-	// Fetch validator
-	pubKeys := make([]phase0.BLSPubKey, 1)
-	pubKey, err := util.BestPublicKey(account)
+	validatorIndex, err := util.ValidatorIndex(ctx, data.eth2Client, data.account, data.pubKey, data.index)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to obtain public key for account")
+		return nil, errors.Wrap(err, "failed to obtain validator index")
 	}
-	copy(pubKeys[0][:], pubKey.Marshal())
-	validators, err := data.eth2Client.(eth2client.ValidatorsProvider).ValidatorsByPubKey(ctx, fmt.Sprintf("%d", uint64(data.epoch)*data.slotsPerEpoch), pubKeys)
+
+	validators, err := data.eth2Client.(eth2client.ValidatorsProvider).Validators(ctx, fmt.Sprintf("%d", uint64(data.epoch)*data.slotsPerEpoch), []phase0.ValidatorIndex{validatorIndex})
 	if err != nil {
 		return nil, errors.New("failed to obtain validator information")
 	}
@@ -81,6 +69,9 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain duty for validator")
 	}
+	if data.debug {
+		fmt.Printf("Duty is %s\n", duty.String())
+	}
 
 	startSlot := duty.Slot + 1
 	endSlot := startSlot + 32
@@ -110,10 +101,32 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 			if attestation.Data.Slot == duty.Slot &&
 				attestation.Data.Index == duty.CommitteeIndex &&
 				attestation.AggregationBits.BitAt(duty.ValidatorCommitteeIndex) {
+
+				headCorrect := false
+				targetCorrect := false
+				if data.verbose {
+					headCorrect, err = calcHeadCorrect(ctx, data, attestation)
+					if err != nil {
+						return nil, errors.Wrap(err, "failed to obtain head correct result")
+					}
+					targetCorrect, err = calcTargetCorrect(ctx, data, attestation)
+					if err != nil {
+						return nil, errors.Wrap(err, "failed to obtain target correct result")
+					}
+				}
+				results.found = true
+				results.attestation = attestation
 				results.slot = slot
 				results.attestationIndex = uint64(i)
 				results.inclusionDelay = slot - duty.Slot
-				results.found = true
+				results.sourceTimely = results.inclusionDelay <= 5 // sqrt(32)
+				results.targetCorrect = targetCorrect
+				results.targetTimely = targetCorrect && results.inclusionDelay <= 32
+				results.headCorrect = headCorrect
+				results.headTimely = headCorrect && results.inclusionDelay == 1
+				if data.debug {
+					fmt.Printf("Attestation is %s\n", attestation.String())
+				}
 				return results, nil
 			}
 		}
@@ -121,6 +134,49 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 	return results, nil
 }
 
+func calcHeadCorrect(ctx context.Context, data *dataIn, attestation *phase0.Attestation) (bool, error) {
+	slot := attestation.Data.Slot
+	for {
+		header, err := data.eth2Client.(eth2client.BeaconBlockHeadersProvider).BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+		if err != nil {
+			return false, nil
+		}
+		if header == nil {
+			// No block.
+			slot--
+			continue
+		}
+		if !header.Canonical {
+			// Not canonical.
+			slot--
+			continue
+		}
+		return bytes.Equal(header.Root[:], attestation.Data.BeaconBlockRoot[:]), nil
+	}
+}
+
+func calcTargetCorrect(ctx context.Context, data *dataIn, attestation *phase0.Attestation) (bool, error) {
+	// Start with first slot of the target epoch.
+	slot := data.chainTime.FirstSlotOfEpoch(attestation.Data.Target.Epoch)
+	for {
+		header, err := data.eth2Client.(eth2client.BeaconBlockHeadersProvider).BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+		if err != nil {
+			return false, nil
+		}
+		if header == nil {
+			// No block.
+			slot--
+			continue
+		}
+		if !header.Canonical {
+			// Not canonical.
+			slot--
+			continue
+		}
+		return bytes.Equal(header.Root[:], attestation.Data.Target.Root[:]), nil
+	}
+}
+
 func duty(ctx context.Context, eth2Client eth2client.Service, validator *api.Validator, epoch phase0.Epoch, slotsPerEpoch uint64) (*api.AttesterDuty, error) {
 	// Find the attesting slot for the given epoch.
 	duties, err := eth2Client.(eth2client.AttesterDutiesProvider).AttesterDuties(ctx, epoch, []phase0.ValidatorIndex{validator.Index})

cmd/attesterinclusion.go

@@ -49,6 +49,7 @@ func init() {
 	attesterFlags(attesterInclusionCmd)
 	attesterInclusionCmd.Flags().Int64("epoch", -1, "the last complete epoch")
 	attesterInclusionCmd.Flags().String("pubkey", "", "the public key of the attester")
+	attesterInclusionCmd.Flags().Int64("index", -1, "the index of the attester")
 }
 
 func attesterInclusionBindings() {
@@ -58,4 +59,7 @@ func attesterInclusionBindings() {
 	if err := viper.BindPFlag("pubkey", attesterInclusionCmd.Flags().Lookup("pubkey")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("index", attesterInclusionCmd.Flags().Lookup("index")); err != nil {
+		panic(err)
+	}
 }

cmd/block/analyze/command.go

@@ -0,0 +1,136 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/go-bitfield"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Operation.
+	blockID    string
+	stream     bool
+	jsonOutput bool
+
+	// Data access.
+	eth2Client           eth2client.Service
+	chainTime            chaintime.Service
+	blocksProvider       eth2client.SignedBeaconBlockProvider
+	blockHeadersProvider eth2client.BeaconBlockHeadersProvider
+
+	// Constants.
+	timelySourceWeight uint64
+	timelyTargetWeight uint64
+	timelyHeadWeight   uint64
+	syncRewardWeight   uint64
+	proposerWeight     uint64
+	weightDenominator  uint64
+
+	// Processing.
+	priorAttestations map[string]*attestationData
+	// Head roots provides the root of the head slot at given slots.
+	headRoots map[phase0.Slot]phase0.Root
+	// Target roots provides the root of the target epoch at given slots.
+	targetRoots map[phase0.Slot]phase0.Root
+
+	// Block info.
+	// Map is slot -> committee index -> validator committee index -> votes.
+	votes map[phase0.Slot]map[phase0.CommitteeIndex]bitfield.Bitlist
+
+	// Results.
+	analysis *blockAnalysis
+}
+
+type blockAnalysis struct {
+	Slot         phase0.Slot            `json:"slot"`
+	Attestations []*attestationAnalysis `json:"attestations"`
+	SyncCommitee *syncCommitteeAnalysis `json:"sync_committee"`
+	Value        float64                `json:"value"`
+}
+
+type attestationAnalysis struct {
+	Head          phase0.Root      `json:"head"`
+	Target        phase0.Root      `json:"target"`
+	Distance      int              `json:"distance"`
+	Duplicate     *attestationData `json:"duplicate,omitempty"`
+	NewVotes      int              `json:"new_votes"`
+	Votes         int              `json:"votes"`
+	PossibleVotes int              `json:"possible_votes"`
+	HeadCorrect   bool             `json:"head_correct"`
+	HeadTimely    bool             `json:"head_timely"`
+	SourceTimely  bool             `json:"source_timely"`
+	TargetCorrect bool             `json:"target_correct"`
+	TargetTimely  bool             `json:"target_timely"`
+	Score         float64          `json:"score"`
+	Value         float64          `json:"value"`
+}
+
+type syncCommitteeAnalysis struct {
+	Contributions         int     `json:"contributions"`
+	PossibleContributions int     `json:"possible_contributions"`
+	Score                 float64 `json:"score"`
+	Value                 float64 `json:"value"`
+}
+
+type attestationData struct {
+	Block phase0.Slot `json:"block"`
+	Index int         `json:"index"`
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:             viper.GetBool("quiet"),
+		verbose:           viper.GetBool("verbose"),
+		debug:             viper.GetBool("debug"),
+		priorAttestations: make(map[string]*attestationData),
+		headRoots:         make(map[phase0.Slot]phase0.Root),
+		targetRoots:       make(map[phase0.Slot]phase0.Root),
+		votes:             make(map[phase0.Slot]map[phase0.CommitteeIndex]bitfield.Bitlist),
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	c.blockID = viper.GetString("blockid")
+	c.stream = viper.GetBool("stream")
+	c.jsonOutput = viper.GetBool("json")
+
+	return c, nil
+}

cmd/block/analyze/command_internal_test.go

@@ -0,0 +1,82 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "ValidatorsZero",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"validators": "0",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+			err: "validators must be at least 1",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/block/analyze/output.go

@@ -0,0 +1,157 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	if c.jsonOutput {
+		return c.outputJSON(ctx)
+	}
+
+	return c.outputTxt(ctx)
+}
+
+type attestationAnalysisJSON struct {
+	Head          string           `json:"head"`
+	Target        string           `json:"target"`
+	Distance      int              `json:"distance"`
+	Duplicate     *attestationData `json:"duplicate,omitempty"`
+	NewVotes      int              `json:"new_votes"`
+	Votes         int              `json:"votes"`
+	PossibleVotes int              `json:"possible_votes"`
+	HeadCorrect   bool             `json:"head_correct"`
+	HeadTimely    bool             `json:"head_timely"`
+	SourceTimely  bool             `json:"source_timely"`
+	TargetCorrect bool             `json:"target_correct"`
+	TargetTimely  bool             `json:"target_timely"`
+	Score         float64          `json:"score"`
+	Value         float64          `json:"value"`
+}
+
+func (a *attestationAnalysis) MarshalJSON() ([]byte, error) {
+	return json.Marshal(attestationAnalysisJSON{
+		Head:          fmt.Sprintf("%#x", a.Head),
+		Target:        fmt.Sprintf("%#x", a.Target),
+		Distance:      a.Distance,
+		Duplicate:     a.Duplicate,
+		NewVotes:      a.NewVotes,
+		Votes:         a.Votes,
+		PossibleVotes: a.PossibleVotes,
+		HeadCorrect:   a.HeadCorrect,
+		HeadTimely:    a.HeadTimely,
+		SourceTimely:  a.SourceTimely,
+		TargetCorrect: a.TargetCorrect,
+		TargetTimely:  a.TargetTimely,
+		Score:         a.Score,
+		Value:         a.Value,
+	})
+}
+
+func (c *command) outputJSON(_ context.Context) (string, error) {
+	data, err := json.Marshal(c.analysis)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func (c *command) outputTxt(_ context.Context) (string, error) {
+	builder := strings.Builder{}
+
+	for i, attestation := range c.analysis.Attestations {
+		if c.verbose {
+			builder.WriteString("Attestation ")
+			builder.WriteString(fmt.Sprintf("%d", i))
+			builder.WriteString(": ")
+			builder.WriteString("distance ")
+			builder.WriteString(fmt.Sprintf("%d", attestation.Distance))
+			builder.WriteString(", ")
+
+			if attestation.Duplicate != nil {
+				builder.WriteString("duplicate of attestation ")
+				builder.WriteString(fmt.Sprintf("%d", attestation.Duplicate.Index))
+				builder.WriteString(" in block ")
+				builder.WriteString(fmt.Sprintf("%d", attestation.Duplicate.Block))
+				builder.WriteString("\n")
+				continue
+			}
+
+			builder.WriteString(fmt.Sprintf("%d", attestation.NewVotes))
+			builder.WriteString("/")
+			builder.WriteString(fmt.Sprintf("%d", attestation.Votes))
+			builder.WriteString("/")
+			builder.WriteString(fmt.Sprintf("%d", attestation.PossibleVotes))
+			builder.WriteString(" new/total/possible votes")
+			if attestation.NewVotes == 0 {
+				builder.WriteString("\n")
+				continue
+			} else {
+				builder.WriteString(", ")
+			}
+			switch {
+			case !attestation.HeadCorrect:
+				builder.WriteString("head vote incorrect, ")
+			case !attestation.HeadTimely:
+				builder.WriteString("head vote correct but late, ")
+			}
+
+			if !attestation.SourceTimely {
+				builder.WriteString("source vote late, ")
+			}
+
+			switch {
+			case !attestation.TargetCorrect:
+				builder.WriteString("target vote incorrect, ")
+			case !attestation.TargetTimely:
+				builder.WriteString("target vote correct but late, ")
+			}
+
+			builder.WriteString("score ")
+			builder.WriteString(fmt.Sprintf("%0.3f", attestation.Score))
+			builder.WriteString(", value ")
+			builder.WriteString(fmt.Sprintf("%0.3f", attestation.Value))
+			builder.WriteString("\n")
+		}
+	}
+
+	if c.analysis.SyncCommitee.Contributions > 0 {
+		if c.verbose {
+			builder.WriteString("Sync committee contributions: ")
+			builder.WriteString(fmt.Sprintf("%d", c.analysis.SyncCommitee.Contributions))
+			builder.WriteString(" contributions, score ")
+			builder.WriteString(fmt.Sprintf("%0.3f", c.analysis.SyncCommitee.Score))
+			builder.WriteString(", value ")
+			builder.WriteString(fmt.Sprintf("%0.3f", c.analysis.SyncCommitee.Value))
+			builder.WriteString("\n")
+		}
+	}
+
+	builder.WriteString("Value for block ")
+	builder.WriteString(fmt.Sprintf("%d", c.analysis.Slot))
+	builder.WriteString(": ")
+	builder.WriteString(fmt.Sprintf("%0.3f", c.analysis.Value))
+	builder.WriteString("\n")
+
+	return builder.String(), nil
+}

cmd/block/analyze/process.go

@@ -0,0 +1,431 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/go-bitfield"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
+	"github.com/wealdtech/ethdo/util"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Obtain information we need to process.
+	if err := c.setup(ctx); err != nil {
+		return err
+	}
+
+	block, err := c.blocksProvider.SignedBeaconBlock(ctx, c.blockID)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain beacon block")
+	}
+	if block == nil {
+		return errors.New("empty beacon block")
+	}
+
+	slot, err := block.Slot()
+	if err != nil {
+		return err
+	}
+	attestations, err := block.Attestations()
+	if err != nil {
+		return err
+	}
+
+	c.analysis = &blockAnalysis{
+		Slot: slot,
+	}
+
+	// Calculate how many parents we need to fetch.
+	minSlot := slot
+	for _, attestation := range attestations {
+		if attestation.Data.Slot < minSlot {
+			minSlot = attestation.Data.Slot
+		}
+	}
+	if c.debug {
+		fmt.Printf("Need to fetch blocks to slot %d\n", minSlot)
+	}
+
+	if err := c.fetchParents(ctx, block, minSlot); err != nil {
+		return err
+	}
+
+	return c.analyze(ctx, block)
+}
+
+func (c *command) analyze(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	if err := c.analyzeAttestations(ctx, block); err != nil {
+		return err
+	}
+
+	if err := c.analyzeSyncCommittees(ctx, block); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *command) analyzeAttestations(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	attestations, err := block.Attestations()
+	if err != nil {
+		return err
+	}
+	slot, err := block.Slot()
+	if err != nil {
+		return err
+	}
+
+	c.analysis.Attestations = make([]*attestationAnalysis, len(attestations))
+
+	blockVotes := make(map[phase0.Slot]map[phase0.CommitteeIndex]bitfield.Bitlist)
+	for i, attestation := range attestations {
+		if c.debug {
+			fmt.Printf("Processing attestation %d\n", i)
+		}
+		analysis := &attestationAnalysis{
+			Head:     attestation.Data.BeaconBlockRoot,
+			Target:   attestation.Data.Target.Root,
+			Distance: int(slot - attestation.Data.Slot),
+		}
+
+		root, err := attestation.HashTreeRoot()
+		if err != nil {
+			return err
+		}
+		if info, exists := c.priorAttestations[fmt.Sprintf("%#x", root)]; exists {
+			analysis.Duplicate = info
+		} else {
+			data := attestation.Data
+			_, exists := blockVotes[data.Slot]
+			if !exists {
+				blockVotes[data.Slot] = make(map[phase0.CommitteeIndex]bitfield.Bitlist)
+			}
+			_, exists = blockVotes[data.Slot][data.Index]
+			if !exists {
+				blockVotes[data.Slot][data.Index] = bitfield.NewBitlist(attestation.AggregationBits.Len())
+			}
+
+			// Count new votes.
+			analysis.PossibleVotes = int(attestation.AggregationBits.Len())
+			for j := uint64(0); j < attestation.AggregationBits.Len(); j++ {
+				if attestation.AggregationBits.BitAt(j) {
+					analysis.Votes++
+					if blockVotes[data.Slot][data.Index].BitAt(j) {
+						// Already attested to in this block; skip.
+						continue
+					}
+					if c.votes[data.Slot][data.Index].BitAt(j) {
+						// Already attested to in a previous block; skip.
+						continue
+					}
+					analysis.NewVotes++
+					blockVotes[data.Slot][data.Index].SetBitAt(j, true)
+				}
+			}
+			// Calculate head correct.
+			var err error
+			analysis.HeadCorrect, err = c.calcHeadCorrect(ctx, attestation)
+			if err != nil {
+				return err
+			}
+
+			// Calculate head timely.
+			analysis.HeadTimely = attestation.Data.Slot == slot-1
+
+			// Calculate source timely.
+			analysis.SourceTimely = attestation.Data.Slot >= slot-5
+
+			// Calculate target correct.
+			analysis.TargetCorrect, err = c.calcTargetCorrect(ctx, attestation)
+			if err != nil {
+				return err
+			}
+
+			// Calculate target timely.
+			analysis.TargetTimely = attestation.Data.Slot >= slot-32
+		}
+
+		// Calculate score and value.
+		if analysis.TargetCorrect && analysis.TargetTimely {
+			analysis.Score += float64(c.timelyTargetWeight) / float64(c.weightDenominator)
+		}
+		if analysis.SourceTimely {
+			analysis.Score += float64(c.timelySourceWeight) / float64(c.weightDenominator)
+		}
+		if analysis.HeadCorrect && analysis.HeadTimely {
+			analysis.Score += float64(c.timelyHeadWeight) / float64(c.weightDenominator)
+		}
+		analysis.Value = analysis.Score * float64(analysis.NewVotes)
+		c.analysis.Value += analysis.Value
+
+		c.analysis.Attestations[i] = analysis
+	}
+
+	return nil
+}
+
+func (c *command) fetchParents(ctx context.Context, block *spec.VersionedSignedBeaconBlock, minSlot phase0.Slot) error {
+	parentRoot, err := block.ParentRoot()
+	if err != nil {
+		return err
+	}
+
+	// Obtain the parent block.
+	parentBlock, err := c.blocksProvider.SignedBeaconBlock(ctx, fmt.Sprintf("%#x", parentRoot))
+	if err != nil {
+		return err
+	}
+	if parentBlock == nil {
+		return fmt.Errorf("unable to obtain parent block %s", parentBlock)
+	}
+
+	parentSlot, err := parentBlock.Slot()
+	if err != nil {
+		return err
+	}
+	if parentSlot < minSlot {
+		return nil
+	}
+
+	if err := c.processParentBlock(ctx, parentBlock); err != nil {
+		return err
+	}
+
+	return c.fetchParents(ctx, parentBlock, minSlot)
+}
+
+func (c *command) processParentBlock(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	attestations, err := block.Attestations()
+	if err != nil {
+		return err
+	}
+	slot, err := block.Slot()
+	if err != nil {
+		return err
+	}
+	if c.debug {
+		fmt.Printf("Processing block %d\n", slot)
+	}
+
+	for i, attestation := range attestations {
+		root, err := attestation.HashTreeRoot()
+		if err != nil {
+			return err
+		}
+		c.priorAttestations[fmt.Sprintf("%#x", root)] = &attestationData{
+			Block: slot,
+			Index: i,
+		}
+
+		data := attestation.Data
+		_, exists := c.votes[data.Slot]
+		if !exists {
+			c.votes[data.Slot] = make(map[phase0.CommitteeIndex]bitfield.Bitlist)
+		}
+		_, exists = c.votes[data.Slot][data.Index]
+		if !exists {
+			c.votes[data.Slot][data.Index] = bitfield.NewBitlist(attestation.AggregationBits.Len())
+		}
+		for j := uint64(0); j < attestation.AggregationBits.Len(); j++ {
+			if attestation.AggregationBits.BitAt(j) {
+				c.votes[data.Slot][data.Index].SetBitAt(j, true)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return errors.Wrap(err, "failed to connect to beacon node")
+	}
+
+	c.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(c.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(c.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(c.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to set up chaintime service")
+	}
+
+	// Obtain the number of active validators.
+	var isProvider bool
+	c.blocksProvider, isProvider = c.eth2Client.(eth2client.SignedBeaconBlockProvider)
+	if !isProvider {
+		return errors.New("connection does not provide signed beacon block information")
+	}
+	c.blockHeadersProvider, isProvider = c.eth2Client.(eth2client.BeaconBlockHeadersProvider)
+	if !isProvider {
+		return errors.New("connection does not provide beacon block header information")
+	}
+
+	specProvider, isProvider := c.eth2Client.(eth2client.SpecProvider)
+	if !isProvider {
+		return errors.New("connection does not provide spec information")
+	}
+
+	spec, err := specProvider.Spec(ctx)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain spec")
+	}
+
+	tmp, exists := spec["TIMELY_SOURCE_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(14)
+	}
+	var ok bool
+	c.timelySourceWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("TIMELY_SOURCE_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["TIMELY_TARGET_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(26)
+	}
+	c.timelyTargetWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("TIMELY_TARGET_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["TIMELY_HEAD_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(14)
+	}
+	c.timelyHeadWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("TIMELY_HEAD_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["SYNC_REWARD_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(2)
+	}
+	c.syncRewardWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("SYNC_REWARD_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["PROPOSER_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(8)
+	}
+	c.proposerWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("PROPOSER_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["WEIGHT_DENOMINATOR"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(64)
+	}
+	c.weightDenominator, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("WEIGHT_DENOMINATOR of unexpected type")
+	}
+	return nil
+}
+
+func (c *command) calcHeadCorrect(ctx context.Context, attestation *phase0.Attestation) (bool, error) {
+	slot := attestation.Data.Slot
+	root, exists := c.headRoots[slot]
+	if !exists {
+		for {
+			header, err := c.blockHeadersProvider.BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+			if err != nil {
+				return false, nil
+			}
+			if header == nil {
+				// No block.
+				slot--
+				continue
+			}
+			if !header.Canonical {
+				// Not canonical.
+				slot--
+				continue
+			}
+			c.headRoots[attestation.Data.Slot] = header.Root
+			root = header.Root
+			break
+		}
+	}
+
+	return bytes.Equal(root[:], attestation.Data.BeaconBlockRoot[:]), nil
+}
+
+func (c *command) calcTargetCorrect(ctx context.Context, attestation *phase0.Attestation) (bool, error) {
+	root, exists := c.targetRoots[attestation.Data.Slot]
+	if !exists {
+		// Start with first slot of the target epoch.
+		slot := c.chainTime.FirstSlotOfEpoch(attestation.Data.Target.Epoch)
+		for {
+			header, err := c.blockHeadersProvider.BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+			if err != nil {
+				return false, nil
+			}
+			if header == nil {
+				// No block.
+				slot--
+				continue
+			}
+			if !header.Canonical {
+				// Not canonical.
+				slot--
+				continue
+			}
+			c.targetRoots[attestation.Data.Slot] = header.Root
+			root = header.Root
+			break
+		}
+	}
+	return bytes.Equal(root[:], attestation.Data.Target.Root[:]), nil
+}
+
+func (c *command) analyzeSyncCommittees(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	c.analysis.SyncCommitee = &syncCommitteeAnalysis{}
+	switch block.Version {
+	case spec.DataVersionPhase0:
+		return nil
+	case spec.DataVersionAltair:
+		c.analysis.SyncCommitee.Contributions = int(block.Altair.Message.Body.SyncAggregate.SyncCommitteeBits.Count())
+		c.analysis.SyncCommitee.PossibleContributions = int(block.Altair.Message.Body.SyncAggregate.SyncCommitteeBits.Len())
+		c.analysis.SyncCommitee.Score = float64(c.syncRewardWeight) / float64(c.weightDenominator)
+		c.analysis.SyncCommitee.Value = c.analysis.SyncCommitee.Score * float64(c.analysis.SyncCommitee.Contributions)
+		c.analysis.Value += c.analysis.SyncCommitee.Value
+		return nil
+	default:
+		return fmt.Errorf("unsupported block version %d", block.Version)
+	}
+}

cmd/block/analyze/process_internal_test.go

@@ -0,0 +1,63 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidData",
+			vars: map[string]interface{}{
+				"timeout":    "60s",
+				"validators": "1",
+				"data":       "[[",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/block/analyze/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/block/info/input.go

@@ -32,6 +32,7 @@ type dataIn struct {
 	// Operation.
 	eth2Client eth2client.Service
 	jsonOutput bool
+	sszOutput  bool
 	// Chain information.
 	blockID string
 	stream  bool
@@ -48,13 +49,14 @@ func input(ctx context.Context) (*dataIn, error) {
 	data.verbose = viper.GetBool("verbose")
 	data.debug = viper.GetBool("debug")
 	data.jsonOutput = viper.GetBool("json")
+	data.sszOutput = viper.GetBool("ssz")
 
 	data.stream = viper.GetBool("stream")
 
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	if viper.GetString("blockid") == "" {

cmd/block/info/input_internal_test.go

@@ -66,7 +66,7 @@ func TestInput(t *testing.T) {
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "ConnectionBad",
@@ -79,7 +79,7 @@ func TestInput(t *testing.T) {
 				timeout: 5 * time.Second,
 				blockID: "justified",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "BlockIDNil",

cmd/block/info/output.go

@@ -18,6 +18,7 @@ import (
 	"context"
 	"encoding/hex"
 	"fmt"
+	"math/big"
 	"sort"
 	"strings"
 	"time"
@@ -25,6 +26,7 @@ import (
 
 	eth2client "github.com/attestantio/go-eth2-client"
 	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/bellatrix"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/go-bitfield"
@@ -75,6 +77,7 @@ func outputBlockGeneral(ctx context.Context,
 		res.WriteString(fmt.Sprintf("State root: %#x\n", stateRoot))
 	}
 	if len(graffiti) > 0 && hex.EncodeToString(graffiti) != "0000000000000000000000000000000000000000000000000000000000000000" {
+		graffiti = bytes.TrimRight(graffiti, "\u0000")
 		if utf8.Valid(graffiti) {
 			res.WriteString(fmt.Sprintf("Graffiti: %s\n", string(graffiti)))
 		} else {
@@ -111,13 +114,15 @@ func outputBlockAttestations(ctx context.Context, eth2Client eth2client.Service,
 				if !exists {
 					beaconCommittees, err := beaconCommitteesProvider.BeaconCommittees(ctx, fmt.Sprintf("%d", att.Data.Slot))
 					if err != nil {
-						return "", errors.Wrap(err, "failed to obtain beacon committees")
-					}
-					for _, beaconCommittee := range beaconCommittees {
-						if _, exists := validatorCommittees[beaconCommittee.Slot]; !exists {
-							validatorCommittees[beaconCommittee.Slot] = make(map[phase0.CommitteeIndex][]phase0.ValidatorIndex)
+						// Failed to get it; create an empty committee to stop us continually attempting to re-fetch.
+						validatorCommittees[att.Data.Slot] = make(map[phase0.CommitteeIndex][]phase0.ValidatorIndex)
+					} else {
+						for _, beaconCommittee := range beaconCommittees {
+							if _, exists := validatorCommittees[beaconCommittee.Slot]; !exists {
+								validatorCommittees[beaconCommittee.Slot] = make(map[phase0.CommitteeIndex][]phase0.ValidatorIndex)
+							}
+							validatorCommittees[beaconCommittee.Slot][beaconCommittee.Index] = beaconCommittee.Validators
 						}
-						validatorCommittees[beaconCommittee.Slot][beaconCommittee.Index] = beaconCommittee.Validators
 					}
 					committees = validatorCommittees[att.Data.Slot]
 				}
@@ -125,7 +130,9 @@ func outputBlockAttestations(ctx context.Context, eth2Client eth2client.Service,
 				res.WriteString(fmt.Sprintf("    Committee index: %d\n", att.Data.Index))
 				res.WriteString(fmt.Sprintf("    Attesters: %d/%d\n", att.AggregationBits.Count(), att.AggregationBits.Len()))
 				res.WriteString(fmt.Sprintf("    Aggregation bits: %s\n", bitlistToString(att.AggregationBits)))
-				res.WriteString(fmt.Sprintf("    Attesting indices: %s\n", attestingIndices(att.AggregationBits, committees[att.Data.Index])))
+				if _, exists := committees[att.Data.Index]; exists {
+					res.WriteString(fmt.Sprintf("    Attesting indices: %s\n", attestingIndices(att.AggregationBits, committees[att.Data.Index])))
+				}
 				res.WriteString(fmt.Sprintf("    Slot: %d\n", att.Data.Slot))
 				res.WriteString(fmt.Sprintf("    Beacon block root: %#x\n", att.Data.BeaconBlockRoot))
 				res.WriteString(fmt.Sprintf("    Source epoch: %d\n", att.Data.Source.Epoch))
@@ -263,6 +270,96 @@ func outputBlockSyncAggregate(ctx context.Context, eth2Client eth2client.Service
 	return res.String(), nil
 }
 
+func outputBellatrixBlockText(ctx context.Context, data *dataOut, signedBlock *bellatrix.SignedBeaconBlock) (string, error) {
+	if signedBlock == nil {
+		return "", errors.New("no block supplied")
+	}
+
+	body := signedBlock.Message.Body
+
+	res := strings.Builder{}
+
+	// General info.
+	blockRoot, err := signedBlock.Message.HashTreeRoot()
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain block root")
+	}
+	bodyRoot, err := signedBlock.Message.Body.HashTreeRoot()
+	if err != nil {
+		return "", errors.Wrap(err, "failed to generate body root")
+	}
+
+	tmp, err := outputBlockGeneral(ctx,
+		data.verbose,
+		signedBlock.Message.Slot,
+		blockRoot,
+		bodyRoot,
+		signedBlock.Message.ParentRoot,
+		signedBlock.Message.StateRoot,
+		signedBlock.Message.Body.Graffiti,
+		data.genesisTime,
+		data.slotDuration,
+		data.slotsPerEpoch)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Eth1 data.
+	if data.verbose {
+		tmp, err := outputBlockETH1Data(ctx, body.ETH1Data)
+		if err != nil {
+			return "", err
+		}
+		res.WriteString(tmp)
+	}
+
+	// Sync aggregate.
+	tmp, err = outputBlockSyncAggregate(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.SyncAggregate, phase0.Epoch(uint64(signedBlock.Message.Slot)/data.slotsPerEpoch))
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Attestations.
+	tmp, err = outputBlockAttestations(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.Attestations)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Attester slashings.
+	tmp, err = outputBlockAttesterSlashings(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.AttesterSlashings)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	res.WriteString(fmt.Sprintf("Proposer slashings: %d\n", len(body.ProposerSlashings)))
+	// Add verbose proposer slashings.
+
+	tmp, err = outputBlockDeposits(ctx, data.verbose, signedBlock.Message.Body.Deposits)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Voluntary exits.
+	tmp, err = outputBlockVoluntaryExits(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.VoluntaryExits)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	tmp, err = outputBlockExecutionPayload(ctx, data.verbose, signedBlock.Message.Body.ExecutionPayload)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	return res.String(), nil
+}
+
 func outputAltairBlockText(ctx context.Context, data *dataOut, signedBlock *altair.SignedBeaconBlock) (string, error) {
 	if signedBlock == nil {
 		return "", errors.New("no block supplied")
@@ -423,6 +520,64 @@ func outputPhase0BlockText(ctx context.Context, data *dataOut, signedBlock *phas
 	return res.String(), nil
 }
 
+func outputBlockExecutionPayload(ctx context.Context,
+	verbose bool,
+	payload *bellatrix.ExecutionPayload,
+) (
+	string,
+	error,
+) {
+	if payload == nil {
+		return "", nil
+	}
+
+	// If the block number is 0 then we're before the merge.
+	if payload.BlockNumber == 0 {
+		return "", nil
+	}
+
+	res := strings.Builder{}
+	if !verbose {
+		res.WriteString("Execution block number: ")
+		res.WriteString(fmt.Sprintf("%d\n", payload.BlockNumber))
+	} else {
+		res.WriteString("Execution payload:\n")
+		res.WriteString("  Execution block number: ")
+		res.WriteString(fmt.Sprintf("%d\n", payload.BlockNumber))
+		baseFeePerGasBEBytes := make([]byte, len(payload.BaseFeePerGas))
+		for i := 0; i < 32; i++ {
+			baseFeePerGasBEBytes[i] = payload.BaseFeePerGas[32-1-i]
+		}
+		baseFeePerGas := new(big.Int).SetBytes(baseFeePerGasBEBytes)
+		res.WriteString("  Base fee per gas: ")
+		res.WriteString(string2eth.WeiToString(baseFeePerGas, true))
+		res.WriteString("\n  Block hash: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.BlockHash))
+		res.WriteString("  Parent hash: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.ParentHash))
+		res.WriteString("  Fee recipient: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.FeeRecipient))
+		res.WriteString("  Gas limit: ")
+		res.WriteString(fmt.Sprintf("%d\n", payload.GasLimit))
+		res.WriteString("  Gas used: ")
+		res.WriteString(fmt.Sprintf("%d\n", payload.GasUsed))
+		res.WriteString("  Timestamp: ")
+		res.WriteString(fmt.Sprintf("%s (%d)\n", time.Unix(int64(payload.Timestamp), 0).String(), payload.Timestamp))
+		res.WriteString("  Prev RANDAO: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.PrevRandao))
+		res.WriteString("  Receipts root: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.ReceiptsRoot))
+		res.WriteString("  State root: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.StateRoot))
+		res.WriteString("  Extra data: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.ExtraData))
+		res.WriteString("  Logs bloom: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.LogsBloom))
+	}
+
+	return res.String(), nil
+}
+
 // intersection returns a list of items common between the two sets.
 func intersection(set1 []uint64, set2 []uint64) []phase0.ValidatorIndex {
 	sort.Slice(set1, func(i, j int) bool { return set1[i] < set1[j] })

cmd/block/info/process.go

@@ -23,11 +23,13 @@ import (
 	api "github.com/attestantio/go-eth2-client/api/v1"
 	"github.com/attestantio/go-eth2-client/spec"
 	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/bellatrix"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 )
 
 var jsonOutput bool
+var sszOutput bool
 var results *dataOut
 
 func process(ctx context.Context, data *dataIn) (*dataOut, error) {
@@ -66,7 +68,11 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 			return nil, errors.Wrap(err, "failed to output block")
 		}
 	case spec.DataVersionAltair:
-		if err := outputAltairBlock(ctx, data.jsonOutput, signedBlock.Altair); err != nil {
+		if err := outputAltairBlock(ctx, data.jsonOutput, data.sszOutput, signedBlock.Altair); err != nil {
+			return nil, errors.Wrap(err, "failed to output block")
+		}
+	case spec.DataVersionBellatrix:
+		if err := outputBellatrixBlock(ctx, data.jsonOutput, data.sszOutput, signedBlock.Bellatrix); err != nil {
 			return nil, errors.Wrap(err, "failed to output block")
 		}
 	default:
@@ -75,6 +81,7 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 
 	if data.stream {
 		jsonOutput = data.jsonOutput
+		sszOutput = data.sszOutput
 		err := data.eth2Client.(eth2client.EventsProvider).Events(ctx, []string{"head"}, headEventHandler)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to start block stream")
@@ -94,26 +101,43 @@ func headEventHandler(event *api.Event) {
 	blockID := fmt.Sprintf("%#x", event.Data.(*api.HeadEvent).Block[:])
 	signedBlock, err := results.eth2Client.(eth2client.SignedBeaconBlockProvider).SignedBeaconBlock(context.Background(), blockID)
 	if err != nil {
-		fmt.Printf("Failed to obtain block: %v\n", err)
+		if !jsonOutput {
+			fmt.Printf("Failed to obtain block: %v\n", err)
+		}
 		return
 	}
 	if signedBlock == nil {
-		fmt.Println("Empty beacon block")
+		if !jsonOutput {
+			fmt.Println("Empty beacon block")
+		}
 		return
 	}
 	switch signedBlock.Version {
 	case spec.DataVersionPhase0:
 		if err := outputPhase0Block(context.Background(), jsonOutput, signedBlock.Phase0); err != nil {
-			fmt.Printf("Failed to output block: %v\n", err)
+			if !jsonOutput {
+				fmt.Printf("Failed to output block: %v\n", err)
+			}
 			return
 		}
 	case spec.DataVersionAltair:
-		if err := outputAltairBlock(context.Background(), jsonOutput, signedBlock.Altair); err != nil {
-			fmt.Printf("Failed to output block: %v\n", err)
+		if err := outputAltairBlock(context.Background(), jsonOutput, sszOutput, signedBlock.Altair); err != nil {
+			if !jsonOutput {
+				fmt.Printf("Failed to output block: %v\n", err)
+			}
+			return
+		}
+	case spec.DataVersionBellatrix:
+		if err := outputBellatrixBlock(context.Background(), jsonOutput, sszOutput, signedBlock.Bellatrix); err != nil {
+			if !jsonOutput {
+				fmt.Printf("Failed to output block: %v\n", err)
+			}
 			return
 		}
 	default:
-		fmt.Printf("Unknown block version: %v\n", signedBlock.Version)
+		if !jsonOutput {
+			fmt.Printf("Unknown block version: %v\n", signedBlock.Version)
+		}
 		return
 	}
 }
@@ -136,7 +160,7 @@ func outputPhase0Block(ctx context.Context, jsonOutput bool, signedBlock *phase0
 	return nil
 }
 
-func outputAltairBlock(ctx context.Context, jsonOutput bool, signedBlock *altair.SignedBeaconBlock) error {
+func outputAltairBlock(ctx context.Context, jsonOutput bool, sszOutput bool, signedBlock *altair.SignedBeaconBlock) error {
 	switch {
 	case jsonOutput:
 		data, err := json.Marshal(signedBlock)
@@ -144,6 +168,12 @@ func outputAltairBlock(ctx context.Context, jsonOutput bool, signedBlock *altair
 			return errors.Wrap(err, "failed to generate JSON")
 		}
 		fmt.Printf("%s\n", string(data))
+	case sszOutput:
+		data, err := signedBlock.MarshalSSZ()
+		if err != nil {
+			return errors.Wrap(err, "failed to generate SSZ")
+		}
+		fmt.Printf("%x\n", data)
 	default:
 		data, err := outputAltairBlockText(ctx, results, signedBlock)
 		if err != nil {
@@ -153,3 +183,27 @@ func outputAltairBlock(ctx context.Context, jsonOutput bool, signedBlock *altair
 	}
 	return nil
 }
+
+func outputBellatrixBlock(ctx context.Context, jsonOutput bool, sszOutput bool, signedBlock *bellatrix.SignedBeaconBlock) error {
+	switch {
+	case jsonOutput:
+		data, err := json.Marshal(signedBlock)
+		if err != nil {
+			return errors.Wrap(err, "failed to generate JSON")
+		}
+		fmt.Printf("%s\n", string(data))
+	case sszOutput:
+		data, err := signedBlock.MarshalSSZ()
+		if err != nil {
+			return errors.Wrap(err, "failed to generate SSZ")
+		}
+		fmt.Printf("%x\n", data)
+	default:
+		data, err := outputBellatrixBlockText(ctx, results, signedBlock)
+		if err != nil {
+			return errors.Wrap(err, "failed to generate text")
+		}
+		fmt.Printf("%s\n", data)
+	}
+	return nil
+}

cmd/block/info/process_internal_test.go

@@ -47,7 +47,7 @@ func TestProcess(t *testing.T) {
 			dataIn: &dataIn{
 				eth2Client: eth2Client,
 			},
-			err: "failed to output block: failed to generate text: no block supplied",
+			err: "empty beacon block",
 		},
 	}
 

cmd/blockanalyze.go

@@ -0,0 +1,65 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	blockanalyze "github.com/wealdtech/ethdo/cmd/block/analyze"
+)
+
+var blockAnalyzeCmd = &cobra.Command{
+	Use:   "analyze",
+	Short: "Analyze a block",
+	Long: `Analyze the contents of a block.  For example:
+
+    ethdo block analyze --blockid=12345
+
+In quiet mode this will return 0 if the block information is present and not skipped, otherwise 1.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := blockanalyze.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if viper.GetBool("quiet") {
+			return nil
+		}
+		if res != "" {
+			fmt.Print(res)
+		}
+		return nil
+	},
+}
+
+func init() {
+	blockCmd.AddCommand(blockAnalyzeCmd)
+	blockFlags(blockAnalyzeCmd)
+	blockAnalyzeCmd.Flags().String("blockid", "head", "the ID of the block to fetch")
+	blockAnalyzeCmd.Flags().Bool("stream", false, "continually stream blocks as they arrive")
+	blockAnalyzeCmd.Flags().Bool("json", false, "output data in JSON format")
+}
+
+func blockAnalyzeBindings() {
+	if err := viper.BindPFlag("blockid", blockAnalyzeCmd.Flags().Lookup("blockid")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("stream", blockAnalyzeCmd.Flags().Lookup("stream")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("json", blockAnalyzeCmd.Flags().Lookup("json")); err != nil {
+		panic(err)
+	}
+}

cmd/blockinfo.go

@@ -26,7 +26,7 @@ var blockInfoCmd = &cobra.Command{
 	Short: "Obtain information about a block",
 	Long: `Obtain information about a block.  For example:
 
-    ethdo block info --slot=12345
+    ethdo block info --blockid=12345
 
 In quiet mode this will return 0 if the block information is present and not skipped, otherwise 1.`,
 	RunE: func(cmd *cobra.Command, args []string) error {
@@ -50,6 +50,7 @@ func init() {
 	blockInfoCmd.Flags().String("blockid", "head", "the ID of the block to fetch")
 	blockInfoCmd.Flags().Bool("stream", false, "continually stream blocks as they arrive")
 	blockInfoCmd.Flags().Bool("json", false, "output data in JSON format")
+	blockInfoCmd.Flags().Bool("ssz", false, "output data in SSZ format")
 }
 
 func blockInfoBindings() {
@@ -62,4 +63,7 @@ func blockInfoBindings() {
 	if err := viper.BindPFlag("json", blockInfoCmd.Flags().Lookup("json")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("ssz", blockInfoCmd.Flags().Lookup("ssz")); err != nil {
+		panic(err)
+	}
 }

cmd/chain/time/output.go

@@ -28,12 +28,17 @@ type dataOut struct {
 	quiet   bool
 	verbose bool
 
-	epoch      spec.Epoch
-	epochStart time.Time
-	epochEnd   time.Time
-	slot       spec.Slot
-	slotStart  time.Time
-	slotEnd    time.Time
+	epoch                         spec.Epoch
+	epochStart                    time.Time
+	epochEnd                      time.Time
+	slot                          spec.Slot
+	slotStart                     time.Time
+	slotEnd                       time.Time
+	syncCommitteePeriod           uint64
+	syncCommitteePeriodStart      time.Time
+	syncCommitteePeriodEpochStart spec.Epoch
+	syncCommitteePeriodEnd        time.Time
+	syncCommitteePeriodEpochEnd   spec.Epoch
 }
 
 func output(ctx context.Context, data *dataOut) (string, error) {
@@ -60,7 +65,18 @@ func output(ctx context.Context, data *dataOut) (string, error) {
 	builder.WriteString(data.slotStart.Format("2006-01-02 15:04:05"))
 	builder.WriteString("\n  Slot end ")
 	builder.WriteString(data.slotEnd.Format("2006-01-02 15:04:05"))
-	builder.WriteString("\n")
+
+	builder.WriteString("\nSync committee period ")
+	builder.WriteString(fmt.Sprintf("%d", data.syncCommitteePeriod))
+	builder.WriteString("\n  Sync committee period start ")
+	builder.WriteString(data.syncCommitteePeriodStart.Format("2006-01-02 15:04:05"))
+	builder.WriteString(" (epoch ")
+	builder.WriteString(fmt.Sprintf("%d", data.syncCommitteePeriodEpochStart))
+	builder.WriteString(")\n  Sync committee period end ")
+	builder.WriteString(data.syncCommitteePeriodEnd.Format("2006-01-02 15:04:05"))
+	builder.WriteString(" (epoch ")
+	builder.WriteString(fmt.Sprintf("%d", data.syncCommitteePeriodEpochEnd))
+	builder.WriteString(")\n")
 
 	return builder.String(), nil
 }

cmd/chain/time/process.go

@@ -19,7 +19,7 @@ import (
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
-	spec "github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/wealdtech/ethdo/util"
 )
@@ -41,6 +41,7 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 
 	slotsPerEpoch := config["SLOTS_PER_EPOCH"].(uint64)
 	slotDuration := config["SECONDS_PER_SLOT"].(time.Duration)
+	epochsPerSyncCommitteePeriod := config["EPOCHS_PER_SYNC_COMMITTEE_PERIOD"].(uint64)
 	genesis, err := eth2Client.(eth2client.GenesisProvider).Genesis(ctx)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain genesis data")
@@ -59,13 +60,13 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to parse slot")
 		}
-		results.slot = spec.Slot(slot)
+		results.slot = phase0.Slot(slot)
 	case data.epoch != "":
 		epoch, err := strconv.ParseUint(data.epoch, 10, 64)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to parse epoch")
 		}
-		results.slot = spec.Slot(epoch * slotsPerEpoch)
+		results.slot = phase0.Slot(epoch * slotsPerEpoch)
 	case data.timestamp != "":
 		timestamp, err := time.Parse("2006-01-02T15:04:05-0700", data.timestamp)
 		if err != nil {
@@ -75,15 +76,20 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		if secs < 0 {
 			return nil, errors.New("timestamp prior to genesis")
 		}
-		results.slot = spec.Slot(secs / slotDuration)
+		results.slot = phase0.Slot(secs / slotDuration)
 	}
 
 	// Fill in the info given the slot.
 	results.slotStart = genesis.GenesisTime.Add(time.Duration(results.slot) * slotDuration)
 	results.slotEnd = genesis.GenesisTime.Add(time.Duration(results.slot+1) * slotDuration)
-	results.epoch = spec.Epoch(uint64(results.slot) / slotsPerEpoch)
+	results.epoch = phase0.Epoch(uint64(results.slot) / slotsPerEpoch)
 	results.epochStart = genesis.GenesisTime.Add(time.Duration(uint64(results.epoch)*slotsPerEpoch) * slotDuration)
 	results.epochEnd = genesis.GenesisTime.Add(time.Duration(uint64(results.epoch+1)*slotsPerEpoch) * slotDuration)
+	results.syncCommitteePeriod = uint64(results.epoch) / epochsPerSyncCommitteePeriod
+	results.syncCommitteePeriodEpochStart = phase0.Epoch(results.syncCommitteePeriod * epochsPerSyncCommitteePeriod)
+	results.syncCommitteePeriodEpochEnd = phase0.Epoch((results.syncCommitteePeriod+1)*epochsPerSyncCommitteePeriod) - 1
+	results.syncCommitteePeriodStart = genesis.GenesisTime.Add(time.Duration(uint64(results.syncCommitteePeriodEpochStart)*slotsPerEpoch) * slotDuration)
+	results.syncCommitteePeriodEnd = genesis.GenesisTime.Add(time.Duration(uint64(results.syncCommitteePeriodEpochEnd)*slotsPerEpoch) * slotDuration)
 
 	return results, nil
 }

cmd/chain/time/process_internal_test.go

@@ -15,6 +15,7 @@ package chaintime
 
 import (
 	"context"
+	"fmt"
 	"os"
 	"testing"
 	"time"
@@ -46,11 +47,16 @@ func TestProcess(t *testing.T) {
 				slot:                     "1",
 			},
 			expected: &dataOut{
-				epochStart: time.Unix(1606824023, 0),
-				epochEnd:   time.Unix(1606824407, 0),
-				slot:       1,
-				slotStart:  time.Unix(1606824035, 0),
-				slotEnd:    time.Unix(1606824047, 0),
+				epochStart:                    time.Unix(1606824023, 0),
+				epochEnd:                      time.Unix(1606824407, 0),
+				slot:                          1,
+				slotStart:                     time.Unix(1606824035, 0),
+				slotEnd:                       time.Unix(1606824047, 0),
+				syncCommitteePeriod:           0,
+				syncCommitteePeriodStart:      time.Unix(1606824023, 0),
+				syncCommitteePeriodEnd:        time.Unix(1606921943, 0),
+				syncCommitteePeriodEpochStart: 0,
+				syncCommitteePeriodEpochEnd:   255,
 			},
 		},
 		{
@@ -62,12 +68,17 @@ func TestProcess(t *testing.T) {
 				epoch:                    "2",
 			},
 			expected: &dataOut{
-				epoch:      2,
-				epochStart: time.Unix(1606824791, 0),
-				epochEnd:   time.Unix(1606825175, 0),
-				slot:       64,
-				slotStart:  time.Unix(1606824791, 0),
-				slotEnd:    time.Unix(1606824803, 0),
+				epoch:                         2,
+				epochStart:                    time.Unix(1606824791, 0),
+				epochEnd:                      time.Unix(1606825175, 0),
+				slot:                          64,
+				slotStart:                     time.Unix(1606824791, 0),
+				slotEnd:                       time.Unix(1606824803, 0),
+				syncCommitteePeriod:           0,
+				syncCommitteePeriodStart:      time.Unix(1606824023, 0),
+				syncCommitteePeriodEnd:        time.Unix(1606921943, 0),
+				syncCommitteePeriodEpochStart: 0,
+				syncCommitteePeriodEpochEnd:   255,
 			},
 		},
 		{
@@ -76,15 +87,20 @@ func TestProcess(t *testing.T) {
 				connection:               os.Getenv("ETHDO_TEST_CONNECTION"),
 				timeout:                  10 * time.Second,
 				allowInsecureConnections: true,
-				timestamp:                "2021-01-01T00:00:00",
+				timestamp:                "2021-01-01T00:00:00+0000",
 			},
 			expected: &dataOut{
-				epoch:      6862,
-				epochStart: time.Unix(1609459031, 0),
-				epochEnd:   time.Unix(1609459415, 0),
-				slot:       219598,
-				slotStart:  time.Unix(1609459199, 0),
-				slotEnd:    time.Unix(1609459211, 0),
+				epoch:                         6862,
+				epochStart:                    time.Unix(1609459031, 0),
+				epochEnd:                      time.Unix(1609459415, 0),
+				slot:                          219598,
+				slotStart:                     time.Unix(1609459199, 0),
+				slotEnd:                       time.Unix(1609459211, 0),
+				syncCommitteePeriod:           26,
+				syncCommitteePeriodStart:      time.Unix(1609379927, 0),
+				syncCommitteePeriodEnd:        time.Unix(1609477847, 0),
+				syncCommitteePeriodEpochStart: 6656,
+				syncCommitteePeriodEpochEnd:   6911,
 			},
 		},
 	}
@@ -96,6 +112,7 @@ func TestProcess(t *testing.T) {
 				require.EqualError(t, err, test.err)
 			} else {
 				require.NoError(t, err)
+				fmt.Printf("****** %d %d\n", res.syncCommitteePeriodStart.Unix(), res.syncCommitteePeriodEnd.Unix())
 				require.Equal(t, test.expected, res)
 			}
 		})

cmd/epoch.go

@@ -0,0 +1,40 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// epochCmd represents the epoch command
+var epochCmd = &cobra.Command{
+	Use:   "epoch",
+	Short: "Obtain information about Ethereum 2 epochs",
+	Long:  "Obtain information about Ethereum 2 epochs",
+}
+
+func init() {
+	RootCmd.AddCommand(epochCmd)
+}
+
+func epochFlags(cmd *cobra.Command) {
+	epochSummaryCmd.Flags().String("epoch", "", "the epoch for which to obtain information (default current, can be 'current', 'last' or a number)")
+}
+
+func epochBindings() {
+	if err := viper.BindPFlag("epoch", epochSummaryCmd.Flags().Lookup("epoch")); err != nil {
+		panic(err)
+	}
+}

cmd/epoch/summary/command.go

@@ -0,0 +1,97 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package epochsummary
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Operation.
+	epoch      string
+	stream     bool
+	jsonOutput bool
+
+	// Data access.
+	eth2Client             eth2client.Service
+	chainTime              chaintime.Service
+	proposerDutiesProvider eth2client.ProposerDutiesProvider
+	blocksProvider         eth2client.SignedBeaconBlockProvider
+	syncCommitteesProvider eth2client.SyncCommitteesProvider
+
+	// Results.
+	summary *epochSummary
+}
+
+type epochSummary struct {
+	Epoch         phase0.Epoch          `json:"epoch"`
+	FirstSlot     phase0.Slot           `json:"first_slot"`
+	LastSlot      phase0.Slot           `json:"last_slot"`
+	Proposals     []*epochProposal      `json:"proposals"`
+	SyncCommittee []*epochSyncCommittee `json:"sync_committees"`
+}
+
+type epochProposal struct {
+	Slot     phase0.Slot           `json:"slot"`
+	Proposer phase0.ValidatorIndex `json:"proposer"`
+	Block    bool                  `json:"block"`
+}
+
+type epochSyncCommittee struct {
+	Index  phase0.ValidatorIndex `json:"index"`
+	Missed int                   `json:"missed"`
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:   viper.GetBool("quiet"),
+		verbose: viper.GetBool("verbose"),
+		debug:   viper.GetBool("debug"),
+		summary: &epochSummary{},
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	c.epoch = viper.GetString("epoch")
+	c.stream = viper.GetBool("stream")
+	c.jsonOutput = viper.GetBool("json")
+
+	return c, nil
+}

cmd/epoch/summary/command_internal_test.go

@@ -0,0 +1,71 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package epochsummary
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"timeout": "5s",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/epoch/summary/output.go

@@ -0,0 +1,107 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package epochsummary
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	if c.jsonOutput {
+		return c.outputJSON(ctx)
+	}
+
+	return c.outputTxt(ctx)
+}
+
+func (c *command) outputJSON(_ context.Context) (string, error) {
+	data, err := json.Marshal(c.summary)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func (c *command) outputTxt(_ context.Context) (string, error) {
+	builder := strings.Builder{}
+
+	builder.WriteString("Epoch ")
+	builder.WriteString(fmt.Sprintf("%d:\n", c.summary.Epoch))
+
+	proposedBlocks := 0
+	if c.verbose {
+		for _, proposal := range c.summary.Proposals {
+			builder.WriteString("  Slot ")
+			builder.WriteString(fmt.Sprintf("%d (%d/%d):\n", proposal.Slot, uint64(proposal.Slot)%uint64(len(c.summary.Proposals)), len(c.summary.Proposals)))
+			builder.WriteString("    Proposer: ")
+			builder.WriteString(fmt.Sprintf("%d\n", proposal.Proposer))
+			builder.WriteString("    Proposed: ")
+			if proposal.Block {
+				proposedBlocks++
+				builder.WriteString("✓\n")
+			} else {
+				builder.WriteString("✕\n")
+			}
+		}
+	} else {
+		missedProposals := make([]string, 0, len(c.summary.Proposals))
+		for _, proposal := range c.summary.Proposals {
+			if !proposal.Block {
+				missedProposals = append(missedProposals, fmt.Sprintf("    Slot %d (validator %d)\n", proposal.Slot, proposal.Proposer))
+			} else {
+				proposedBlocks++
+			}
+		}
+		if len(missedProposals) > 0 {
+			builder.WriteString("  Missed proposals:\n")
+			for _, missedProposal := range missedProposals {
+				builder.WriteString(missedProposal)
+			}
+		}
+	}
+
+	if c.verbose {
+		for _, syncCommittee := range c.summary.SyncCommittee {
+			builder.WriteString("  Sync committee validator ")
+			builder.WriteString(fmt.Sprintf("%d:\n", syncCommittee.Index))
+			builder.WriteString("    Chances: ")
+			builder.WriteString(fmt.Sprintf("%d\n", proposedBlocks))
+			builder.WriteString("    Included: ")
+			builder.WriteString(fmt.Sprintf("%d\n", proposedBlocks-syncCommittee.Missed))
+			builder.WriteString("    Inclusion %: ")
+			builder.WriteString(fmt.Sprintf("%0.2f\n", 100.0*float64(proposedBlocks-syncCommittee.Missed)/float64(proposedBlocks)))
+		}
+	} else {
+		missedSyncCommittees := make([]string, 0, len(c.summary.SyncCommittee))
+		for _, syncCommittee := range c.summary.SyncCommittee {
+			missedPct := 100.0 * float64(syncCommittee.Missed) / float64(proposedBlocks)
+			missedSyncCommittees = append(missedSyncCommittees, fmt.Sprintf("    %d (%0.2f%%) by validator %d\n", syncCommittee.Missed, missedPct, syncCommittee.Index))
+		}
+		if len(missedSyncCommittees) > 0 {
+			builder.WriteString("  Missed sync committees (excluding missed blocks):\n")
+			for _, missedSyncCommittee := range missedSyncCommittees {
+				builder.WriteString(missedSyncCommittee)
+			}
+		}
+	}
+
+	return builder.String(), nil
+}

cmd/epoch/summary/process.go

@@ -0,0 +1,174 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package epochsummary
+
+import (
+	"context"
+	"fmt"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec"
+	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
+	"github.com/wealdtech/ethdo/util"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Obtain information we need to process.
+	err := c.setup(ctx)
+	if err != nil {
+		return err
+	}
+
+	c.summary.Epoch, err = util.ParseEpoch(ctx, c.chainTime, c.epoch)
+	if err != nil {
+		return errors.Wrap(err, "failed to parse epoch")
+	}
+	c.summary.FirstSlot = c.chainTime.FirstSlotOfEpoch(c.summary.Epoch)
+	c.summary.LastSlot = c.chainTime.FirstSlotOfEpoch(c.summary.Epoch+1) - 1
+
+	if err := c.processProposerDuties(ctx); err != nil {
+		return err
+	}
+	if err := c.processAttesterDuties(ctx); err != nil {
+		return err
+	}
+	if err := c.processSyncCommitteeDuties(ctx); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *command) processProposerDuties(ctx context.Context) error {
+	duties, err := c.proposerDutiesProvider.ProposerDuties(ctx, c.summary.Epoch, nil)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain proposer duties")
+	}
+	if duties == nil {
+		return errors.New("empty proposer duties")
+	}
+	for _, duty := range duties {
+		block, err := c.blocksProvider.SignedBeaconBlock(ctx, fmt.Sprintf("%d", duty.Slot))
+		if err != nil {
+			return errors.Wrap(err, fmt.Sprintf("failed to obtain block for slot %d", duty.Slot))
+		}
+		present := block != nil
+		c.summary.Proposals = append(c.summary.Proposals, &epochProposal{
+			Slot:     duty.Slot,
+			Proposer: duty.ValidatorIndex,
+			Block:    present,
+		})
+	}
+
+	return nil
+}
+
+func (c *command) processAttesterDuties(ctx context.Context) error {
+	// Obtain all active validators for the given epoch.
+	// Do in future.
+	return nil
+}
+
+func (c *command) processSyncCommitteeDuties(ctx context.Context) error {
+	committee, err := c.syncCommitteesProvider.SyncCommittee(ctx, fmt.Sprintf("%d", c.summary.FirstSlot))
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain sync committee")
+	}
+	if len(committee.Validators) == 0 {
+		return errors.New("empty sync committee")
+	}
+
+	missed := make(map[phase0.ValidatorIndex]int)
+	for _, index := range committee.Validators {
+		missed[index] = 0
+	}
+
+	for slot := c.summary.FirstSlot; slot <= c.summary.LastSlot; slot++ {
+		block, err := c.blocksProvider.SignedBeaconBlock(ctx, fmt.Sprintf("%d", slot))
+		if err != nil {
+			return errors.Wrap(err, fmt.Sprintf("failed to obtain block for slot %d", slot))
+		}
+		if block == nil {
+			// If the block is missed we don't count the sync aggregate miss.
+			continue
+		}
+		var aggregate *altair.SyncAggregate
+		switch block.Version {
+		case spec.DataVersionPhase0:
+			// No sync committees in this fork.
+			return nil
+		case spec.DataVersionAltair:
+			aggregate = block.Altair.Message.Body.SyncAggregate
+		case spec.DataVersionBellatrix:
+			aggregate = block.Bellatrix.Message.Body.SyncAggregate
+		default:
+			return fmt.Errorf("unhandled block version %v", block.Version)
+		}
+		for i := uint64(0); i < aggregate.SyncCommitteeBits.Len(); i++ {
+			if !aggregate.SyncCommitteeBits.BitAt(i) {
+				missed[committee.Validators[int(i)]]++
+			}
+		}
+	}
+
+	c.summary.SyncCommittee = make([]*epochSyncCommittee, 0, len(missed))
+	for index, count := range missed {
+		if count > 0 {
+			c.summary.SyncCommittee = append(c.summary.SyncCommittee, &epochSyncCommittee{
+				Index:  index,
+				Missed: count,
+			})
+		}
+	}
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return errors.Wrap(err, "failed to connect to beacon node")
+	}
+
+	c.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(c.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(c.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(c.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to set up chaintime service")
+	}
+
+	var isProvider bool
+	c.proposerDutiesProvider, isProvider = c.eth2Client.(eth2client.ProposerDutiesProvider)
+	if !isProvider {
+		return errors.New("connection does not provide proposer duties")
+	}
+	c.blocksProvider, isProvider = c.eth2Client.(eth2client.SignedBeaconBlockProvider)
+	if !isProvider {
+		return errors.New("connection does not provide signed beacon blocks")
+	}
+	c.syncCommitteesProvider, isProvider = c.eth2Client.(eth2client.SyncCommitteesProvider)
+	if !isProvider {
+		return errors.New("connection does not provide sync committee duties")
+	}
+
+	return nil
+}

cmd/epoch/summary/process_internal_test.go

@@ -0,0 +1,62 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package epochsummary
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidData",
+			vars: map[string]interface{}{
+				"timeout":    "60s",
+				"data":       "[[",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/epoch/summary/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package epochsummary
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/epochsummary.go

@@ -0,0 +1,58 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	epochsummary "github.com/wealdtech/ethdo/cmd/epoch/summary"
+)
+
+var epochSummaryCmd = &cobra.Command{
+	Use:   "summary",
+	Short: "Obtain summary information about an epoch",
+	Long: `Obtain summary information about an epoch.  For example:
+
+    ethdo epoch summary --epoch=12345
+
+In quiet mode this will return 0 if information for the epoch is found, otherwise 1.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := epochsummary.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if viper.GetBool("quiet") {
+			return nil
+		}
+		if res != "" {
+			fmt.Println(res)
+		}
+		return nil
+	},
+}
+
+func init() {
+	epochCmd.AddCommand(epochSummaryCmd)
+	epochFlags(epochSummaryCmd)
+	epochSummaryCmd.Flags().Bool("json", false, "output data in JSON format")
+}
+
+func epochSummaryBindings() {
+	epochBindings()
+	if err := viper.BindPFlag("json", epochSummaryCmd.Flags().Lookup("json")); err != nil {
+		panic(err)
+	}
+}

cmd/node/events/input.go

@@ -52,7 +52,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	return data, nil

cmd/node/events/input_internal_test.go

@@ -66,7 +66,7 @@ func TestInput(t *testing.T) {
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "ConnectionBad",
@@ -75,7 +75,7 @@ func TestInput(t *testing.T) {
 				"connection": "localhost:1",
 				"topics":     []string{"one", "two"},
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "TopicsNil",

cmd/root.go

@@ -64,7 +64,20 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 	quiet = viper.GetBool("quiet")
 	verbose = viper.GetBool("verbose")
 	debug = viper.GetBool("debug")
-	// Command-specific bindings.
+
+	includeCommandBindings(cmd)
+
+	if quiet && verbose {
+		fmt.Println("Cannot supply both quiet and verbose flags")
+	}
+	if quiet && debug {
+		fmt.Println("Cannot supply both quiet and debug flags")
+	}
+
+	return util.SetupStore()
+}
+
+func includeCommandBindings(cmd *cobra.Command) {
 	switch commandPath(cmd) {
 	case "account/create":
 		accountCreateBindings()
@@ -76,18 +89,24 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 		attesterDutiesBindings()
 	case "attester/inclusion":
 		attesterInclusionBindings()
+	case "block/analyze":
+		blockAnalyzeBindings()
 	case "block/info":
 		blockInfoBindings()
 	case "chain/time":
 		chainTimeBindings()
 	case "chain/verify/signedcontributionandproof":
 		chainVerifySignedContributionAndProofBindings(cmd)
+	case "epoch/summary":
+		epochSummaryBindings()
 	case "exit/verify":
 		exitVerifyBindings()
 	case "node/events":
 		nodeEventsBindings()
 	case "slot/time":
 		slotTimeBindings()
+	case "synccommittee/inclusion":
+		synccommitteeInclusionBindings()
 	case "synccommittee/members":
 		synccommitteeMembersBindings()
 	case "validator/depositdata":
@@ -111,15 +130,6 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 	case "wallet/sharedimport":
 		walletSharedImportBindings()
 	}
-
-	if quiet && verbose {
-		fmt.Println("Cannot supply both quiet and verbose flags")
-	}
-	if quiet && debug {
-		fmt.Println("Cannot supply both quiet and debug flags")
-	}
-
-	return util.SetupStore()
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.

cmd/slot/time/input.go

@@ -54,7 +54,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	return data, nil

cmd/slot/time/input_internal_test.go

@@ -73,7 +73,7 @@ func TestInput(t *testing.T) {
 				"timeout": "5s",
 				"slot":    "1",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/synccommittee/inclusion/command.go

@@ -0,0 +1,83 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Input.
+	account string
+	pubKey  string
+	index   string
+	epoch   int64
+
+	// Data access.
+	eth2Client eth2client.Service
+	chainTime  chaintime.Service
+
+	// Output.
+	inCommittee    bool
+	committeeIndex uint64
+	inclusions     []int
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:   viper.GetBool("quiet"),
+		verbose: viper.GetBool("verbose"),
+		debug:   viper.GetBool("debug"),
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	// Validator.
+	c.account = viper.GetString("account")
+	c.pubKey = viper.GetString("pubkey")
+	c.index = viper.GetString("index")
+	if c.account == "" && c.pubKey == "" && c.index == "" {
+		return nil, errors.New("account, pubkey or index required")
+	}
+
+	// Epoch.
+	c.epoch = viper.GetInt64("epoch")
+
+	return c, nil
+}

cmd/synccommittee/inclusion/command_internal_test.go

@@ -0,0 +1,82 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "NoValidator",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+			err: "account, pubkey or index required",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+				"index":      "1",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/synccommittee/inclusion/output.go

@@ -0,0 +1,81 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"fmt"
+	"strings"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	builder := strings.Builder{}
+
+	if c.verbose {
+		builder.WriteString("Epoch: ")
+		builder.WriteString(fmt.Sprintf("%d\n", c.epoch))
+	}
+
+	if !c.inCommittee {
+		builder.WriteString("Validator not in sync committee")
+	} else {
+		if c.verbose {
+			builder.WriteString("Validator sync committee index ")
+			builder.WriteString(fmt.Sprintf("%d\n", c.committeeIndex))
+		}
+
+		noBlock := 0
+		included := 0
+		missed := 0
+		for _, inclusion := range c.inclusions {
+			switch inclusion {
+			case 0:
+				noBlock++
+			case 1:
+				included++
+			case 2:
+				missed++
+			}
+		}
+		builder.WriteString("Expected: ")
+		builder.WriteString(fmt.Sprintf("%d", len(c.inclusions)))
+		builder.WriteString("\nIncluded: ")
+		builder.WriteString(fmt.Sprintf("%d", included))
+		builder.WriteString("\nMissed: ")
+		builder.WriteString(fmt.Sprintf("%d", missed))
+		builder.WriteString("\nNo block: ")
+		builder.WriteString(fmt.Sprintf("%d", noBlock))
+
+		builder.WriteString("\nPer-slot result: ")
+		for i, inclusion := range c.inclusions {
+			switch inclusion {
+			case 0:
+				builder.WriteString("-")
+			case 1:
+				builder.WriteString("✓")
+			case 2:
+				builder.WriteString("✕")
+			}
+			if i%8 == 7 && i != len(c.inclusions)-1 {
+				builder.WriteString(" ")
+			}
+		}
+	}
+
+	return builder.String(), nil
+}

cmd/synccommittee/inclusion/process.go

@@ -0,0 +1,130 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"fmt"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec"
+	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
+	"github.com/wealdtech/ethdo/util"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Obtain information we need to process.
+	if err := c.setup(ctx); err != nil {
+		return err
+	}
+
+	firstSlot, lastSlot := c.calculateSlots(ctx)
+
+	validatorIndex, err := util.ValidatorIndex(ctx, c.eth2Client, c.account, c.pubKey, c.index)
+	if err != nil {
+		return err
+	}
+
+	syncCommittee, err := c.eth2Client.(eth2client.SyncCommitteesProvider).SyncCommitteeAtEpoch(ctx, "head", phase0.Epoch(c.epoch))
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain sync committee information")
+	}
+
+	if syncCommittee == nil {
+		return errors.New("no sync committee returned")
+	}
+
+	for i := range syncCommittee.Validators {
+		if syncCommittee.Validators[i] == validatorIndex {
+			c.inCommittee = true
+			c.committeeIndex = uint64(i)
+			break
+		}
+	}
+
+	if c.inCommittee {
+		// This validator is in the sync committee.  Check blocks to see where it has been included.
+		c.inclusions = make([]int, 0)
+		if lastSlot > c.chainTime.CurrentSlot() {
+			lastSlot = c.chainTime.CurrentSlot()
+		}
+		for slot := firstSlot; slot < lastSlot; slot++ {
+			block, err := c.eth2Client.(eth2client.SignedBeaconBlockProvider).SignedBeaconBlock(ctx, fmt.Sprintf("%d", slot))
+			if err != nil {
+				return err
+			}
+			if block == nil {
+				c.inclusions = append(c.inclusions, 0)
+				continue
+			}
+			var aggregate *altair.SyncAggregate
+			switch block.Version {
+			case spec.DataVersionAltair:
+				aggregate = block.Altair.Message.Body.SyncAggregate
+				if aggregate.SyncCommitteeBits.BitAt(c.committeeIndex) {
+					c.inclusions = append(c.inclusions, 1)
+				} else {
+					c.inclusions = append(c.inclusions, 2)
+				}
+			case spec.DataVersionBellatrix:
+				aggregate = block.Bellatrix.Message.Body.SyncAggregate
+				if aggregate.SyncCommitteeBits.BitAt(c.committeeIndex) {
+					c.inclusions = append(c.inclusions, 1)
+				} else {
+					c.inclusions = append(c.inclusions, 2)
+				}
+			default:
+				return fmt.Errorf("unhandled block version %v", block.Version)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return err
+	}
+
+	c.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(c.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(c.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(c.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to set up chaintime service")
+	}
+
+	return nil
+}
+
+func (c *command) calculateSlots(ctx context.Context) (phase0.Slot, phase0.Slot) {
+	var firstSlot phase0.Slot
+	var lastSlot phase0.Slot
+	if c.epoch == -1 {
+		c.epoch = int64(c.chainTime.CurrentEpoch()) - 1
+	}
+	firstSlot = c.chainTime.FirstSlotOfEpoch(phase0.Epoch(c.epoch))
+	lastSlot = c.chainTime.FirstSlotOfEpoch(phase0.Epoch(c.epoch) + 1)
+
+	return firstSlot, lastSlot
+}

cmd/synccommittee/inclusion/process_internal_test.go

@@ -0,0 +1,72 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidConnection",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"index":      "1",
+				"connection": "invalid",
+			},
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"index":      "1",
+				"epoch":      "-1",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/synccommittee/inclusion/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/synccommittee/members/input.go

@@ -53,7 +53,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	// Chain time.

cmd/synccommittee/members/input_internal_test.go

@@ -65,7 +65,7 @@ func TestInput(t *testing.T) {
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/synccommittee/members/process_internal_test.go

@@ -56,7 +56,7 @@ func TestProcess(t *testing.T) {
 			dataIn: &dataIn{
 				eth2Client: eth2Client,
 				chainTime:  chainTime,
-				epoch:      61650,
+				epoch:      -1,
 			},
 		},
 	}

cmd/synccommitteeinclusion.go

@@ -0,0 +1,67 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	synccommitteeinclusion "github.com/wealdtech/ethdo/cmd/synccommittee/inclusion"
+)
+
+var synccommitteeInclusionCmd = &cobra.Command{
+	Use:   "inclusion",
+	Short: "Obtain sync committee inclusion data for a validator",
+	Long: `Obtain sync committee inclusion data for a validator.  For example:
+
+    ethdo synccommittee inclusion --epoch=12345 --index=11111
+
+In quiet mode this will return 0 if the validator was in the sync committee, otherwise 1.
+
+epoch can be a specific epoch; If not supplied all slots for the current sync committee period will be provided`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := synccommitteeinclusion.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if viper.GetBool("quiet") {
+			return nil
+		}
+		if res != "" {
+			fmt.Println(res)
+		}
+		return nil
+	},
+}
+
+func init() {
+	synccommitteeCmd.AddCommand(synccommitteeInclusionCmd)
+	synccommitteeFlags(synccommitteeInclusionCmd)
+	synccommitteeInclusionCmd.Flags().Int64("epoch", -1, "the epoch for which to fetch sync committee inclusion")
+	synccommitteeInclusionCmd.Flags().String("pubkey", "", "validator public key for sync committee")
+	synccommitteeInclusionCmd.Flags().String("index", "", "validator index for sync committee")
+}
+
+func synccommitteeInclusionBindings() {
+	if err := viper.BindPFlag("epoch", synccommitteeInclusionCmd.Flags().Lookup("epoch")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("pubkey", synccommitteeInclusionCmd.Flags().Lookup("pubkey")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("index", synccommitteeInclusionCmd.Flags().Lookup("index")); err != nil {
+		panic(err)
+	}
+}

cmd/validator/duties/process.go

@@ -1,4 +1,4 @@
-// Copyright © 2019, 2020 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -15,10 +15,6 @@ package validatorduties
 
 import (
 	"context"
-	"encoding/hex"
-	"fmt"
-	"strconv"
-	"strings"
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
@@ -26,7 +22,6 @@ import (
 	spec "github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/wealdtech/ethdo/util"
-	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 func process(ctx context.Context, data *dataIn) (*dataOut, error) {
@@ -46,7 +41,7 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		verbose: data.verbose,
 	}
 
-	validatorIndex, err := validatorIndex(ctx, eth2Client, data)
+	validatorIndex, err := util.ValidatorIndex(ctx, eth2Client, data.account, data.pubKey, data.index)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain validator index")
 	}
@@ -132,54 +127,3 @@ func currentEpoch(ctx context.Context, eth2Client eth2client.Service) (spec.Epoc
 	}
 	return spec.Epoch(uint64(time.Since(genesis.GenesisTime).Seconds()) / (uint64(slotDuration.Seconds()) * slotsPerEpoch)), nil
 }
-
-// validatorIndex obtains the index of a validator
-func validatorIndex(ctx context.Context, eth2Client eth2client.Service, data *dataIn) (spec.ValidatorIndex, error) {
-	switch {
-	case data.account != "":
-		ctx, cancel := context.WithTimeout(context.Background(), data.timeout)
-		defer cancel()
-		_, account, err := util.WalletAndAccountFromPath(ctx, data.account)
-		if err != nil {
-			return 0, errors.Wrap(err, "failed to obtain account")
-		}
-		return accountToIndex(ctx, account, eth2Client)
-	case data.pubKey != "":
-		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(data.pubKey, "0x"))
-		if err != nil {
-			return 0, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", data.pubKey))
-		}
-		account, err := util.NewScratchAccount(nil, pubKeyBytes)
-		if err != nil {
-			return 0, errors.Wrap(err, fmt.Sprintf("invalid public key %s", data.pubKey))
-		}
-		return accountToIndex(ctx, account, eth2Client)
-	case data.index != "":
-		val, err := strconv.ParseUint(data.index, 10, 64)
-		if err != nil {
-			return 0, err
-		}
-		return spec.ValidatorIndex(val), nil
-	default:
-		return 0, errors.New("no validator")
-	}
-}
-
-func accountToIndex(ctx context.Context, account e2wtypes.Account, eth2Client eth2client.Service) (spec.ValidatorIndex, error) {
-	pubKey, err := util.BestPublicKey(account)
-	if err != nil {
-		return 0, err
-	}
-
-	pubKeys := make([]spec.BLSPubKey, 1)
-	copy(pubKeys[0][:], pubKey.Marshal())
-	validators, err := eth2Client.(eth2client.ValidatorsProvider).ValidatorsByPubKey(ctx, "head", pubKeys)
-	if err != nil {
-		return 0, err
-	}
-
-	for index := range validators {
-		return index, nil
-	}
-	return 0, errors.New("validator not found")
-}

cmd/validator/expectation/process_internal_test.go

@@ -35,7 +35,7 @@ func TestProcess(t *testing.T) {
 		{
 			name: "InvalidData",
 			vars: map[string]interface{}{
-				"timeout":    "5s",
+				"timeout":    "60s",
 				"validators": "1",
 				"data":       "[[",
 				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),

cmd/validatorinfo.go

@@ -143,8 +143,9 @@ func validatorInfoAccount(ctx context.Context, eth2Client eth2client.Service) (e
 		if !isValidatorsProvider {
 			return nil, errors.New("client does not provide validator information")
 		}
+		index := spec.ValidatorIndex(viper.GetInt64("index"))
 		validators, err := validatorsProvider.Validators(ctx, "head", []spec.ValidatorIndex{
-			spec.ValidatorIndex(viper.GetInt64("index")),
+			index,
 		})
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to obtain validator information.")
@@ -153,7 +154,7 @@ func validatorInfoAccount(ctx context.Context, eth2Client eth2client.Service) (e
 			return nil, errors.New("unknown validator index")
 		}
 		pubKeyBytes := make([]byte, 48)
-		copy(pubKeyBytes, validators[0].Validator.PublicKey[:])
+		copy(pubKeyBytes, validators[index].Validator.PublicKey[:])
 		account, err = util.NewScratchAccount(nil, pubKeyBytes)
 		if err != nil {
 			return nil, errors.Wrap(err, fmt.Sprintf("invalid public key %s", viper.GetString("pubkey")))
@@ -227,4 +228,7 @@ func validatorInfoBindings() {
 	if err := viper.BindPFlag("pubkey", validatorInfoCmd.Flags().Lookup("pubkey")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("index", validatorInfoCmd.Flags().Lookup("index")); err != nil {
+		panic(err)
+	}
 }

cmd/version.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 - 2021 Weald Technology Trading.
+// Copyright © 2019 - 2022 Weald Technology Trading.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -24,7 +24,7 @@ import (
 
 // ReleaseVersion is the release version of the codebase.
 // Usually overridden by tag names when building binaries.
-var ReleaseVersion = "local build (latest release 1.15.1)"
+var ReleaseVersion = "local build (latest release 1.19.0)"
 
 // versionCmd represents the version command
 var versionCmd = &cobra.Command{

docs/usage.md

@@ -266,13 +266,35 @@ $ ethdo version
 ### `block` commands
 
 Block commands focus on providing information about Ethereum 2 blocks.
+#### `analyze`
+`ethdo block info` obtains information about a block in Ethereum 2.  Options include:
+  - `blockid`: the ID (slot, root, 'head') of the block to obtain
+
+```sh
+$ ethdo block analyze --blockid=80
+Value for block 80: 488.531
+```
+
+Additional information is supplied when using `--verbose`
+
+```
+$ ethdo block analyze --blockid=80 --verbose
+Attestation 0: distance 1, 119/119/132 new/total/possible votes, score 0.844, value 100.406
+Attestation 1: distance 1, 116/116/131 new/total/possible votes, score 0.844, value 97.875
+Attestation 2: distance 1, 115/115/131 new/total/possible votes, score 0.844, value 97.031
+Attestation 3: distance 1, 114/114/132 new/total/possible votes, score 0.844, value 96.188
+Attestation 4: distance 1, 113/113/132 new/total/possible votes, score 0.844, value 95.344
+Attestation 5: distance 1, 2/22/132 new/total/possible votes, score 0.844, value 1.688
+Value for block 80: 488.531
+```
+
 #### `info`
 
 `ethdo block info` obtains information about a block in Ethereum 2.  Options include:
-  - `slot`: the slot at which to attempt to fetch the block
+  - `blockid`: the ID (slot, root, 'head') of the block to obtain
 
 ```sh
-$ ethdo block info --slot=80 
+$ ethdo block info --blockid=80
 Attestations: 1
 Attester slashings: 0
 Deposits: 0
@@ -385,6 +407,37 @@ Deposit commands focus on information about deposit data information in a JSON f
 $ ethdo deposit verify --data=${HOME}/depositdata.json --withdrawalpubkey=0xad1868210a0cff7aff22633c003c503d4c199c8dcca13bba5b3232fc784d39d3855936e94ce184c3ce27bf15d4347695 --validatorpubkey=0xa951530887ae2494a8cc4f11cf186963b0051ac4f7942375585b9cf98324db1e532a67e521d0fcaab510edad1352394c --depositvalue=32Ether
 ```
 
+### `epoch` comands
+
+Epoch commands focus on information about a beacon chain epoch.
+
+#### `summary`
+
+`ethdo epoch summary` provides a summary of the given epoch.  Options include:
+  - `epoch`: the epoch for which to provide a summary; defaults to last complete epoch
+  - `json`: provide JSON output
+
+```sh
+$ ethdo epoch summary
+Epoch 1406:
+  Slot 44992 (0/32):
+    Proposer: 31501
+    Proposed: ✓
+  Slot 44993 (1/32):
+    Proposer: 9302
+    Proposed: ✓
+  ...
+  Sync committee validator 71248:
+    Chances: 29
+    Included: 7
+    Inclusion %: 24.14
+  Sync committee validator 87371:
+    Chances: 29
+    Included: 0
+    Inclusion %: 0.00
+  ...
+```
+
 ### `exit` comands
 
 Exit commands focus on information about validator exits generated by the `ethdo validator exit` command.
@@ -451,6 +504,40 @@ $ ethdo slot time --slot=5
 2020-12-01 12:01:23 +0000 GMT
 ```
 
+### `synccommittee` commands
+
+Sync committee commands focus on information about sync committees.
+
+#### `inclusion`
+
+`ethdo synccommittee inclusion` provides information about the inclusion, or not, of a validator's sync committee messages.  Options include:
+  - `account` the account of the validator for which to print sync committee contributions
+  - `index` the index of the validator for which to print sync committee contributions
+  - `pubkey` the public key of the validator for which to print sync committee contributions
+  - `epoch` the specific epoch for which to print sync committee contributions.  Defaults to the last complete epoch
+
+
+```sh
+$ ethdo synccommittee inclusion --index=274946 --epoch=91592
+Epoch: 91593
+Expected: 32
+Included: 30
+Missed: 1
+No block: 1
+Per-slot result: ✓✓✓✓✓✓✓✓ ✓✓✕✓✓✓✓✓ ✓✓✓✓-✓✓✓ ✓✓✓✓✓✓✓✓
+```
+
+#### `members`
+
+`ethdo synccommittee members` provides information about the members of a sync committee.  Options include:
+  - `epoch` the specific epoch for which to provide sync committee members.
+  - `period` the period for which to provide sync committee members.  Can be 'current' or 'next'; dfeaults to 'current'
+
+```sh
+$ ethdo synccommittee members
+138334,116317,231736,65706,60046,148162,274946,34724,18051,122841,269578,121110,89733,154887,202118,243459,267543,82793,59504,238929,55360,272874,93917,83116,264342,244312,264907,79193,15443,27997,127175,140965,64416,66399,173906,268885,67779,48139,215005,191435,107954,225228,148630,169357,61091,223319,40668,184307,95903,81179,237461,41723,119710,243333,248243,42757,228686,252749,17546,231625,132030,15934,108465,104302,93026,191946,63738,80996,90679,227542,75463,64581,242030,5429,61623,157314,145363,224733,232492,45357,80674,198583,221422,48665,154803,128608,172512,261074,102835,129935,255726,40846,218932,139874,194575,17346,171565,76413,237859,103170,95661,83018,73902,246680,35795,257792,23836,136624,45745,190990,124229,37281,23818,233435,253903,37502,8669,31151,267179,27954,181019,145719,112270,1899,184844,175014,121769,41717,218760,44813,255860,64865,31985,231664,134296,88114,185542,27557,1698,62470,79182,184325,80380,8865,218456,178979,243886,9466,221389,131476,160857,62916,195389,160182,99293,100263,242371,144594,227527,275978,65714,74350,60121,46642,219334,157142,99379,203508,84367,251808,276456,92563,199831,215312,193875,129690,104234,44290,227725,194780,163061,162328,176517,278620,137355,212826,131615,125734,151873,18977,147927,272759,160537,210675,180411,24203,37266,247527,128678,270287,90352,23043,169645,5304,183412,237387,79751,37635,275139,95857,185990,235565,49425,255836,254314,77582,104172,168556,143653,64173,64504,130363,216602,218107,181130,191845,56454,2040,270365,161952,222409,45097,51611,219190,154903,162311,257460,106337,110775,42928,275709,202352,54724,272295,274470,35220,19694,10347,169585,104938,35121,212982,190582,77999,110201,141519,239881,81263,84314,148883,254649,256309,270013,254179,134009,149660,177127,201926,30533,164789,154343,57437,28958,135169,186415,218514,171355,165247,213526,100044,184264,93278,269329,159634,4092,224671,217236,123946,80703,85444,247742,17959,146473,128231,167559,133899,181532,33378,79060,119785,249443,180469,43692,169679,154421,114047,87877,28337,59072,19807,204598,220293,99461,55272,227923,4503,12580,27044,68955,157373,61321,265034,106833,31534,69137,264783,129588,70433,88338,113528,226211,123003,118982,131549,60350,78896,165715,119736,52639,93274,164295,278837,186453,69910,36768,249533,106205,184057,253232,88155,121377,242589,148236,250065,191526,277249,157463,226527,93000,64784,176880,176380,144301,52061,169803,134291,96648,211716,223000,157911,256737,100938,50434,41075,114894,259888,116872,218201,83617,76348,256832,17113,50270,96468,128448,36987,127511,42397,10154,49234,193346,126352,57719,17029,213127,157942,187829,2353,62462,73637,29053,120324,108515,254684,35982,188131,217092,256206,85802,105907,21204,147562,188961,154541,131147,16000,225112,58362,170375,42239,188309,60280,125472,220119,268946,65736,274053,223569,60454,239552,4401,139357,279634,162711,112016,90295,170641,239770,212067,213770,78311,49057,256295,28666,167207,166783,213148,30689,72118,55912,197733,205116,106169,40570,225057,122079,126423,217781,212897,147499,201774,10616,157826,155954,258431,212151,255318,97138,151907,181491,40236,272993,104430,178068,56089,10067,185066,93669,124108,12785,230215,67995,196282,248285,215370,167715,186183,238147,164161,15068,127990,166146,244578,195912,199812,248435,135597,143024,225304,27045,238140,87008,272550,165234,218128,160038,17697,25332,23446,265921,201045,241106
+```
+
 ### `validator` commands
 
 Validator commands focus on interaction with Ethereum 2 validators.

go.mod

@@ -4,43 +4,48 @@ go 1.16
 
 require (
 	github.com/OneOfOne/xxhash v1.2.5 // indirect
-	github.com/attestantio/dirk v1.0.4
-	github.com/attestantio/go-eth2-client v0.8.1
-	github.com/ferranbt/fastssz v0.0.0-20210905181407-59cf6761a7d5
-	github.com/gofrs/uuid v4.0.0+incompatible
+	github.com/attestantio/dirk v1.1.0
+	github.com/attestantio/go-eth2-client v0.11.0
+	github.com/aws/aws-sdk-go v1.42.44 // indirect
+	github.com/ferranbt/fastssz v0.0.0-20220103083642-bc5fefefa28b
+	github.com/gofrs/uuid v4.2.0+incompatible
 	github.com/google/uuid v1.3.0
 	github.com/hako/durafmt v0.0.0-20210608085754-5c1018a4e16b
 	github.com/hashicorp/hcl v1.0.1-vault-3 // indirect
-	github.com/herumi/bls-eth-go-binary v0.0.0-20210902234237-7763804ee078
+	github.com/herumi/bls-eth-go-binary v0.0.0-20220103074059-01b0ca9e9ef7
+	github.com/jackc/puddle v1.2.1 // indirect
 	github.com/minio/highwayhash v1.0.2 // indirect
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/mitchellh/mapstructure v1.4.2 // indirect
 	github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354
 	github.com/pkg/errors v0.9.1
 	github.com/protolambda/zssz v0.1.5 // indirect
 	github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7
 	github.com/prysmaticlabs/go-ssz v0.0.0-20210121151755-f6208871c388
-	github.com/rs/zerolog v1.23.0
-	github.com/spf13/cobra v1.2.1
+	github.com/rs/zerolog v1.26.1
+	github.com/spf13/afero v1.8.0 // indirect
+	github.com/spf13/cobra v1.3.0
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.8.1
+	github.com/spf13/viper v1.10.1
 	github.com/stretchr/testify v1.7.0
 	github.com/tyler-smith/go-bip39 v1.1.0
 	github.com/wealdtech/go-bytesutil v1.1.1
 	github.com/wealdtech/go-ecodec v1.1.2
-	github.com/wealdtech/go-eth2-types/v2 v2.5.6
-	github.com/wealdtech/go-eth2-util v1.6.5
-	github.com/wealdtech/go-eth2-wallet v1.14.6
-	github.com/wealdtech/go-eth2-wallet-dirk v1.1.8
+	github.com/wealdtech/go-eth2-types/v2 v2.6.0
+	github.com/wealdtech/go-eth2-util v1.7.0
+	github.com/wealdtech/go-eth2-wallet v1.15.0
+	github.com/wealdtech/go-eth2-wallet-dirk v1.2.0
 	github.com/wealdtech/go-eth2-wallet-distributed v1.1.4
-	github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4 v1.1.6
-	github.com/wealdtech/go-eth2-wallet-hd/v2 v2.5.5
-	github.com/wealdtech/go-eth2-wallet-nd/v2 v2.3.4
-	github.com/wealdtech/go-eth2-wallet-store-filesystem v1.16.15
-	github.com/wealdtech/go-eth2-wallet-store-s3 v1.9.5
-	github.com/wealdtech/go-eth2-wallet-store-scratch v1.6.3
-	github.com/wealdtech/go-eth2-wallet-types/v2 v2.8.5
+	github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4 v1.2.0
+	github.com/wealdtech/go-eth2-wallet-hd/v2 v2.6.0
+	github.com/wealdtech/go-eth2-wallet-nd/v2 v2.4.0
+	github.com/wealdtech/go-eth2-wallet-store-filesystem v1.17.0
+	github.com/wealdtech/go-eth2-wallet-store-s3 v1.10.0
+	github.com/wealdtech/go-eth2-wallet-store-scratch v1.7.0
+	github.com/wealdtech/go-eth2-wallet-types/v2 v2.9.0
 	github.com/wealdtech/go-string2eth v1.1.0
+	golang.org/x/crypto v0.0.0-20220128200615-198e4374d7ed // indirect
 	golang.org/x/text v0.3.7
-	google.golang.org/grpc v1.40.0
+	google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350 // indirect
+	google.golang.org/grpc v1.44.0
+	gopkg.in/ini.v1 v1.66.3 // indirect
 )

go.sum

@@ -3,6 +3,7 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
 cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
 cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
 cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
@@ -15,6 +16,7 @@ cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOY
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
 cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
@@ -22,8 +24,11 @@ cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAV
 cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
 cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
 cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
-cloud.google.com/go v0.92.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
 cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
+cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
+cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
+cloud.google.com/go v0.98.0/go.mod h1:ua6Ush4NALrHk5QXDWnjvZHN93OuF0HfuEPq9I1X0cM=
+cloud.google.com/go v0.99.0/go.mod h1:w0Xx2nLzqWJPuozYQX+hFfCSI8WioryfRDzkoI/Y2ZA=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -32,20 +37,23 @@ cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4g
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/firestore v1.6.0/go.mod h1:afJwI0vaXwAG54kI7A//lP/lSPDkQORQuMkv56TxEPU=
+cloud.google.com/go/firestore v1.6.1/go.mod h1:asNXNOzBdyVQmEU+ggO8UPodTkEVFW5Qx+rwHnAz+EY=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
 cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
-cloud.google.com/go/secretmanager v0.1.0/go.mod h1:3nGKHvnzDUVit7U0S9KAKJ4aOsO1xtwRG+7ey5LK1bM=
+cloud.google.com/go/secretmanager v1.0.0/go.mod h1:+Qkm5qxIJ5mk74xxIXA+87fseaY1JLYBcFPQoc/GQxg=
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
+cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/HdrHistogram/hdrhistogram-go v1.1.1/go.mod h1:yDgFjdqOqDEKOvasDdhWNXYg9BVp4O+o5f6V/ehm6Oo=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/OneOfOne/xxhash v1.2.5 h1:zl/OfRA6nftbBK9qTohYBJ5xvw6C/oNKizR7cZGl3cI=
@@ -61,22 +69,28 @@ github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kd
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
-github.com/attestantio/dirk v1.0.4 h1:e5WFS3RxTvtk3BgLjUACItCcjwer07QiYWXP0pjnbZM=
-github.com/attestantio/dirk v1.0.4/go.mod h1:w9QSIVDKMqD7tjK4e5wrTUCyCNlXaDT8U3SfJ+JOsx4=
-github.com/attestantio/go-eth2-client v0.7.2/go.mod h1:kEK9iAAOBoADO5wEkd84FEOzjT1zXgVWveQsqn+uBGg=
-github.com/attestantio/go-eth2-client v0.8.1 h1:KR9FVsEr7t/Gr7bmfONI8itYGDrOgnDuyIYFsfwGGdA=
+github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/attestantio/dirk v1.1.0 h1:hwMTYZkwj/Y0um3OD0LQxg2xSl4/5xqVWV2MRePE4ec=
+github.com/attestantio/dirk v1.1.0/go.mod h1:2jkOw/XHjvIDdhDcmj+Z3kuVPpxMcQ6zxzzjSSv71PY=
 github.com/attestantio/go-eth2-client v0.8.1/go.mod h1:kEK9iAAOBoADO5wEkd84FEOzjT1zXgVWveQsqn+uBGg=
+github.com/attestantio/go-eth2-client v0.10.0 h1:nmOmzErfz4I2gEkucHKOaFwkbwD4i6JbIX38Z8Dm4Tc=
+github.com/attestantio/go-eth2-client v0.10.0/go.mod h1:ijuXoXJCBFMexUYaBOl8PXfZKwYUFJy7cV03TMdw8Bo=
+github.com/attestantio/go-eth2-client v0.11.0 h1:8/Jn5AAfd+4tOggLi+FvOv9/ORaObECv42ab7vK2FJc=
+github.com/attestantio/go-eth2-client v0.11.0/go.mod h1:zXL/BxC0cBBhxj+tP7QG7t9Ufoa8GwQLdlbvZRd9+dM=
 github.com/aws/aws-sdk-go v1.33.17/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
-github.com/aws/aws-sdk-go v1.40.41 h1:v/Y4bB8+wHCONtKV+fuHTzLiqC08lk8e9HqYhRB9PBQ=
 github.com/aws/aws-sdk-go v1.40.41/go.mod h1:585smgzpB/KqRA+K3y/NL/oYRqQvpNJYvLm+LY1U59Q=
+github.com/aws/aws-sdk-go v1.41.19/go.mod h1:585smgzpB/KqRA+K3y/NL/oYRqQvpNJYvLm+LY1U59Q=
+github.com/aws/aws-sdk-go v1.42.44 h1:vPlF4cUsdN5ETfvb7ewZFbFZyB6Rsfndt3kS2XqLXKo=
+github.com/aws/aws-sdk-go v1.42.44/go.mod h1:OGr6lGMAKGlG9CVrYnWYDKIyb829c6EVBRjxqjmPepc=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
-github.com/bketelsen/crypt v0.0.4/go.mod h1:aI6NrJ0pMGgvZKL1iVgXLnfIFJtfV+bKCoqOes/6LfM=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -85,11 +99,19 @@ github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XL
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible/go.mod h1:nmEj6Dob7S7YxXgwXpfOuvO54S+tGdZdw9fuRZt25Ag=
+github.com/circonus-labs/circonusllhist v0.1.3/go.mod h1:kMXHVDlOchFAehlya5ePtbp5jckzBHf4XRpQvBOLI+I=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI=
 github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211001041855-01bcc9b48dfe/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211130200136-a8f946100490/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
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@@ -519,9 +595,13 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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 go.etcd.io/etcd/api/v3 v3.5.0/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=
+go.etcd.io/etcd/api/v3 v3.5.1/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=
 go.etcd.io/etcd/client/pkg/v3 v3.5.0/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
+go.etcd.io/etcd/client/pkg/v3 v3.5.1/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
 go.etcd.io/etcd/client/v2 v2.305.0/go.mod h1:h9puh54ZTgAKtEbut2oe9P4L/oqKCVB6xsXlzd7alYQ=
+go.etcd.io/etcd/client/v2 v2.305.1/go.mod h1:pMEacxZW7o8pg4CrFE7pquyCJJzZvkvdD2RibOCCCGs=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
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@@ -544,11 +624,17 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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@@ -588,11 +674,11 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -604,6 +690,7 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -617,7 +704,6 @@ golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/
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@@ -625,6 +711,7 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
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@@ -634,8 +721,15 @@ golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qx
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@@ -647,11 +741,12 @@ golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210402161424-2e8d93401602/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -662,6 +757,7 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -671,6 +767,7 @@ golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190130150945-aca44879d564/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -680,14 +777,18 @@ golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -709,12 +810,15 @@ golang.org/x/sys v0.0.0-20210104204734-6f8348627aad/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210220050731-9a76102bfb43/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210315160823-c6e025ad8005/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210514084401-e8d321eab015/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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@@ -723,9 +827,28 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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@@ -748,7 +871,6 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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 golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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@@ -757,9 +879,9 @@ golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgw
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-golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -792,12 +914,14 @@ golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4f
 golang.org/x/tools v0.0.0-20201208233053-a543418bbed2/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.3/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.1.7/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -828,12 +952,19 @@ google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34q
 google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
 google.golang.org/api v0.41.0/go.mod h1:RkxM5lITDfTzmyKFPt+wGrCJbVfniCr2ool8kTBzRTU=
 google.golang.org/api v0.43.0/go.mod h1:nQsDGjRXMo4lvh5hP0TKqF244gqhGcr/YSIykhUk/94=
-google.golang.org/api v0.44.0/go.mod h1:EBOGZqzyhtvMDoxwS97ctnh0zUmYY6CxqXsc1AvkYD8=
 google.golang.org/api v0.47.0/go.mod h1:Wbvgpq1HddcWVtzsVLyfLp8lDg6AA241LmgIL59tHXo=
 google.golang.org/api v0.48.0/go.mod h1:71Pr1vy+TAZRPkPs/xlCf5SsU8WjuAWv1Pfjbtukyy4=
 google.golang.org/api v0.50.0/go.mod h1:4bNT5pAuq5ji4SRZm+5QIkjny9JAyVD/3gaSihNefaw=
 google.golang.org/api v0.51.0/go.mod h1:t4HdrdoNgyN5cbEfm7Lum0lcLDLiise1F8qDKX00sOU=
 google.golang.org/api v0.54.0/go.mod h1:7C4bFFOvVDGXjfDTAsgGwDgAxRDeQ4X8NvUedIt6z3k=
+google.golang.org/api v0.55.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE=
+google.golang.org/api v0.56.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE=
+google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdrMgI=
+google.golang.org/api v0.59.0/go.mod h1:sT2boj7M9YJxZzgeZqXogmhfmRWDtPzT31xkieUbuZU=
+google.golang.org/api v0.60.0/go.mod h1:d7rl65NZAkEQ90JFzqBjcRq1TVeG5ZoGV3sSpEnnVb4=
+google.golang.org/api v0.61.0/go.mod h1:xQRti5UdCmoCEqFxcz93fTl338AVqDgyaDRuOZ3hg9I=
+google.golang.org/api v0.62.0/go.mod h1:dKmwPCydfsad4qCH08MSdgWjfHOyfpd4VtDGgRFdavw=
+google.golang.org/api v0.63.0/go.mod h1:gs4ij2ffTRXwuzzgJl/56BdwJaA194ijkfn++9tDuPo=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -880,7 +1011,9 @@ google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210222152913-aa3ee6e6a81c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210226172003-ab064af71705/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210319143718-93e7006c17a6/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
@@ -896,8 +1029,26 @@ google.golang.org/genproto v0.0.0-20210716133855-ce7ef5c701ea/go.mod h1:AxrInvYm
 google.golang.org/genproto v0.0.0-20210728212813-7823e685a01f/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48=
 google.golang.org/genproto v0.0.0-20210805201207-89edb61ffb67/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48=
 google.golang.org/genproto v0.0.0-20210813162853-db860fec028c/go.mod h1:cFeNkxwySK631ADgubI+/XFU/xp8FD5KIVV4rj8UC5w=
-google.golang.org/genproto v0.0.0-20210909211513-a8c4777a87af h1:aLMMXFYqw01RA6XJim5uaN+afqNNjc9P8HPAbnpnc5s=
+google.golang.org/genproto v0.0.0-20210821163610-241b8fcbd6c8/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210828152312-66f60bf46e71/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210831024726-fe130286e0e2/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
 google.golang.org/genproto v0.0.0-20210909211513-a8c4777a87af/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210921142501-181ce0d877f6/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20210924002016-3dee208752a0/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211008145708-270636b82663/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211021150943-2b146023228c/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211027162914-98a5263abeca/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211028162531-8db9c33dc351/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211104193956-4c6863e31247/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211116182654-e63d96a377c4/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211118181313-81c1377c94b1/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211129164237-f09f9a12af12/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211203200212-54befc351ae9/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211206160659-862468c7d6e0/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350 h1:YxHp5zqIcAShDEvRr5/0rVESVS+njYF68PSdazrNLJo=
+google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -923,8 +1074,13 @@ google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQ
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
-google.golang.org/grpc v1.40.0 h1:AGJ0Ih4mHjSeibYkFGh1dD9KJ/eOtZ93I6hoHhukQ5Q=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.40.1/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
+google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.44.0 h1:weqSxi/TMs1SqFRMHCtBgXRs8k3X39QIDEZ0pRcttUg=
+google.golang.org/grpc v1.44.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -949,8 +1105,10 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
-gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU=
-gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.63.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.66.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.66.3 h1:jRskFVxYaMGAMUbN0UZ7niA9gzL9B49DOqE78vg0k3w=
+gopkg.in/ini.v1 v1.66.3/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

services/chaintime/standard/service.go

@@ -32,6 +32,7 @@ type Service struct {
 	slotsPerEpoch                uint64
 	epochsPerSyncCommitteePeriod uint64
 	altairForkEpoch              phase0.Epoch
+	bellatrixForkEpoch           phase0.Epoch
 }
 
 // module-wide log.
@@ -92,12 +93,20 @@ func New(ctx context.Context, params ...Parameter) (*Service, error) {
 	}
 	log.Trace().Uint64("epoch", uint64(altairForkEpoch)).Msg("Obtained Altair fork epoch")
 
+	bellatrixForkEpoch, err := fetchBellatrixForkEpoch(ctx, parameters.forkScheduleProvider)
+	if err != nil {
+		// Set to far future epoch.
+		bellatrixForkEpoch = 0xffffffffffffffff
+	}
+	log.Trace().Uint64("epoch", uint64(bellatrixForkEpoch)).Msg("Obtained Bellatrix fork epoch")
+
 	s := &Service{
 		genesisTime:                  genesisTime,
 		slotDuration:                 slotDuration,
 		slotsPerEpoch:                slotsPerEpoch,
 		epochsPerSyncCommitteePeriod: epochsPerSyncCommitteePeriod,
 		altairForkEpoch:              altairForkEpoch,
+		bellatrixForkEpoch:           bellatrixForkEpoch,
 	}
 
 	return s, nil
@@ -213,3 +222,28 @@ func fetchAltairForkEpoch(ctx context.Context, provider eth2client.ForkScheduleP
 	}
 	return 0, errors.New("no altair fork obtained")
 }
+
+// BellatrixInitialEpoch provides the epoch at which the Bellatrix hard fork takes place.
+func (s *Service) BellatrixInitialEpoch() phase0.Epoch {
+	return s.bellatrixForkEpoch
+}
+
+func fetchBellatrixForkEpoch(ctx context.Context, provider eth2client.ForkScheduleProvider) (phase0.Epoch, error) {
+	forkSchedule, err := provider.ForkSchedule(ctx)
+	if err != nil {
+		return 0, err
+	}
+	count := 0
+	for i := range forkSchedule {
+		count++
+		if bytes.Equal(forkSchedule[i].CurrentVersion[:], forkSchedule[i].PreviousVersion[:]) {
+			// This is the genesis fork; ignore it.
+			continue
+		}
+		if count == 1 {
+			return forkSchedule[i].Epoch, nil
+		}
+		count++
+	}
+	return 0, errors.New("no bellatrix fork obtained")
+}

util/epoch.go

@@ -0,0 +1,42 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"context"
+	"strconv"
+
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/wealdtech/ethdo/services/chaintime"
+)
+
+// ParseEpoch parses input to calculate the desired epoch.
+func ParseEpoch(ctx context.Context, chainTime chaintime.Service, epochStr string) (phase0.Epoch, error) {
+	switch epochStr {
+	case "", "current":
+		return chainTime.CurrentEpoch(), nil
+	case "last":
+		return chainTime.CurrentEpoch() - 1, nil
+	default:
+		val, err := strconv.ParseInt(epochStr, 10, 64)
+		if err != nil {
+			return 0, errors.Wrap(err, "failed to parse epoch")
+		}
+		if val >= 0 {
+			return phase0.Epoch(val), nil
+		}
+		return chainTime.CurrentEpoch() + phase0.Epoch(val), nil
+	}
+}

util/validator.go

@@ -0,0 +1,79 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	consensusclient "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+// ValidatorIndex obtains the index of a validator.
+func ValidatorIndex(ctx context.Context, client consensusclient.Service, account string, pubKey string, index string) (phase0.ValidatorIndex, error) {
+	switch {
+	case account != "":
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		_, account, err := WalletAndAccountFromPath(ctx, account)
+		if err != nil {
+			return 0, errors.Wrap(err, "failed to obtain account")
+		}
+		return accountToIndex(ctx, account, client)
+	case pubKey != "":
+		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(pubKey, "0x"))
+		if err != nil {
+			return 0, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", pubKey))
+		}
+		account, err := NewScratchAccount(nil, pubKeyBytes)
+		if err != nil {
+			return 0, errors.Wrap(err, fmt.Sprintf("invalid public key %s", pubKey))
+		}
+		return accountToIndex(ctx, account, client)
+	case index != "":
+		val, err := strconv.ParseUint(index, 10, 64)
+		if err != nil {
+			return 0, err
+		}
+		return phase0.ValidatorIndex(val), nil
+	default:
+		return 0, errors.New("no validator")
+	}
+}
+
+func accountToIndex(ctx context.Context, account e2wtypes.Account, client consensusclient.Service) (phase0.ValidatorIndex, error) {
+	pubKey, err := BestPublicKey(account)
+	if err != nil {
+		return 0, err
+	}
+
+	pubKeys := make([]phase0.BLSPubKey, 1)
+	copy(pubKeys[0][:], pubKey.Marshal())
+	validators, err := client.(consensusclient.ValidatorsProvider).ValidatorsByPubKey(ctx, "head", pubKeys)
+	if err != nil {
+		return 0, err
+	}
+
+	for index := range validators {
+		return index, nil
+	}
+	return 0, errors.New("validator not found")
+}