Add validator info command

cmd/validatorinfo.go

@@ -0,0 +1,99 @@
+// Copyright © 2020 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"
+	"os"
+	"strings"
+	"time"
+
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/spf13/cobra"
+	"github.com/wealdtech/ethdo/grpc"
+	string2eth "github.com/wealdtech/go-string2eth"
+)
+
+var validatorInfoCmd = &cobra.Command{
+	Use:   "info",
+	Short: "Obtain information about a validator",
+	Long: `Obtain information about validator.  For example:
+
+    ethdo validator info --account=primary/validator
+
+In quiet mode this will return 0 if the validator information can be obtained, otherwise 1.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		// Sanity checking and setup.
+		assert(rootAccount != "", "--account is required")
+		account, err := accountFromPath(rootAccount)
+		errCheck(err, "Failed to access account")
+		err = connect()
+		errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain node")
+
+		validatorInfo, err := grpc.FetchValidatorInfo(eth2GRPCConn, account)
+		errCheck(err, "Failed to obtain validator information")
+		validatorDef, err := grpc.FetchValidator(eth2GRPCConn, account)
+		if validatorInfo.Status != ethpb.ValidatorStatus_DEPOSITED &&
+			validatorInfo.Status != ethpb.ValidatorStatus_UNKNOWN_STATUS {
+			errCheck(err, "Failed to obtain validator definition")
+		}
+
+		assert(validatorInfo.Status != ethpb.ValidatorStatus_UNKNOWN_STATUS, "Not known as a validator")
+
+		if quiet {
+			os.Exit(_exit_success)
+		}
+
+		outputIf(verbose, fmt.Sprintf("Index:\t\t\t%v", validatorInfo.Index))
+		outputIf(verbose, fmt.Sprintf("Public key:\t\t%#x", validatorInfo.PublicKey))
+		fmt.Printf("Status:\t\t\t%s\n", strings.Title(strings.ToLower(validatorInfo.Status.String())))
+		fmt.Printf("Balance:\t\t%s\n", string2eth.GWeiToString(validatorInfo.Balance, true))
+		if validatorInfo.Status == ethpb.ValidatorStatus_ACTIVE ||
+			validatorInfo.Status == ethpb.ValidatorStatus_EXITING ||
+			validatorInfo.Status == ethpb.ValidatorStatus_SLASHING {
+			fmt.Printf("Effective balance:\t%s\n", string2eth.GWeiToString(validatorInfo.EffectiveBalance, true))
+		}
+		outputIf(verbose, fmt.Sprintf("Withdrawal credentials:\t%#x", validatorDef.WithdrawalCredentials))
+		transition := time.Unix(int64(validatorInfo.TransitionTimestamp), 0)
+		transitionPassed := int64(validatorInfo.TransitionTimestamp) <= time.Now().Unix()
+		switch validatorInfo.Status {
+		case ethpb.ValidatorStatus_DEPOSITED:
+			// TODO test
+			if validatorInfo.TransitionTimestamp != 0 {
+				fmt.Printf("Inclusion in chain:\t%s\n", transition)
+			}
+		case ethpb.ValidatorStatus_PENDING:
+			// TODO test
+			fmt.Printf("Activation:\t\t%s\n", transition)
+		case ethpb.ValidatorStatus_EXITING:
+		case ethpb.ValidatorStatus_SLASHING:
+			// TODO test
+			fmt.Printf("Attesting finishes:\t%s\n", transition)
+		case ethpb.ValidatorStatus_EXITED:
+			if transitionPassed {
+				fmt.Printf("Funds withdrawable:\tNow\n")
+			} else {
+				// TODO test
+				fmt.Printf("Funds withdrawable:\t%s\n", transition)
+			}
+		}
+
+		os.Exit(_exit_success)
+	},
+}
+
+func init() {
+	validatorCmd.AddCommand(validatorInfoCmd)
+	validatorFlags(validatorInfoCmd)
+}