52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
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// This script reads a geth genesis config and outputs the corresponding genesis block as
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// RPC-compatible JSON.
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//
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// E.g.: eth-dump-genblock genesis.json > genesis_block.json
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package main
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import (
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"encoding/json"
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"fmt"
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"os"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/trie"
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)
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func main() {
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if len(os.Args) != 2 {
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fatal(fmt.Sprintf("Usage: %s genesis.json", os.Args[0]))
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}
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configPath := os.Args[1]
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file, err := os.Open(configPath)
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if err != nil {
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fatal("Failed to read genesis config file:", err)
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}
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genesis := new(core.Genesis)
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if err := json.NewDecoder(file).Decode(genesis); err != nil {
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fatal("Failed to parse genesis config:", err)
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}
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db := rawdb.NewMemoryDatabase()
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block, err := genesis.Commit(db, trie.NewDatabase(db))
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if err != nil {
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fatal("Failed to create genesis block:", err)
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}
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rpcBlock := RPCMarshalBlock(block)
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blockJSON, err := json.MarshalIndent(rpcBlock, "", " ")
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if err != nil {
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fatal("Failed to convert block to JSON:", err)
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}
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fmt.Println(string(blockJSON))
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}
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func fatal(args ...any) {
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fmt.Fprintln(os.Stderr, args...)
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os.Exit(1)
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}
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