mirror of
https://github.com/wealdtech/ethdo.git
synced 2026-01-08 21:48:05 -05:00
79 lines
2.4 KiB
Go
79 lines
2.4 KiB
Go
// Copyright © 2020 Weald Technology Trading
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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"fmt"
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"os"
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"time"
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"github.com/spf13/cobra"
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"github.com/wealdtech/ethdo/grpc"
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)
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var chainInfoCmd = &cobra.Command{
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Use: "info",
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Short: "Obtain information about a chain",
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Long: `Obtain information about a chain. For example:
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ethdo chain info
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In quiet mode this will return 0 if the chain information can be obtained, otherwise 1.`,
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Run: func(cmd *cobra.Command, args []string) {
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err := connect()
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errCheck(err, "Failed to obtain connection to Ethereum 2 beacon chain node")
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config, err := grpc.FetchChainConfig(eth2GRPCConn)
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errCheck(err, "Failed to obtain beacon chain configuration")
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genesisTime, err := grpc.FetchGenesisTime(eth2GRPCConn)
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errCheck(err, "Failed to obtain genesis time")
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if quiet {
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os.Exit(_exitSuccess)
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}
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if genesisTime.Unix() == 0 {
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fmt.Println("Genesis time: undefined")
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} else {
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fmt.Printf("Genesis time: %s\n", genesisTime.Format(time.UnixDate))
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outputIf(verbose, fmt.Sprintf("Genesis timestamp: %v", genesisTime.Unix()))
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}
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outputIf(verbose, fmt.Sprintf("Genesis fork version: %0x", config["GenesisForkVersion"].([]byte)))
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outputIf(verbose, fmt.Sprintf("Seconds per slot: %v", config["SecondsPerSlot"].(uint64)))
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outputIf(verbose, fmt.Sprintf("Slots per epoch: %v", config["SlotsPerEpoch"].(uint64)))
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os.Exit(_exitSuccess)
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},
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}
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func init() {
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chainCmd.AddCommand(chainInfoCmd)
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chainFlags(chainInfoCmd)
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}
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func timestampToSlot(genesis int64, timestamp int64, secondsPerSlot uint64) uint64 {
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if timestamp < genesis {
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return 0
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}
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return uint64(timestamp-genesis) / secondsPerSlot
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}
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func slotToTimestamp(genesis int64, slot uint64, secondsPerSlot uint64) int64 {
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return genesis + int64(slot*secondsPerSlot)
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}
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func epochToTimestamp(genesis int64, slot uint64, secondsPerSlot uint64, slotsPerEpoch uint64) int64 {
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return genesis + int64(slot*secondsPerSlot*slotsPerEpoch)
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}
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