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cmd/geth: implement data import and export (#22931)

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This PR offers two more database sub commands for exporting and importing data.
Two exporters are implemented: preimage and snapshot data respectively. 
The import command is generic, it can take any data export and import into leveldb. 
The data format has a 'magic' for disambiguation, and a version field for future compatibility.
This commit is contained in:
rjl493456442
2021-11-02 18:31:45 +08:00
committed by GitHub
parent 551bd6e721
commit 2e8b58f076
7 changed files with 590 additions and 15 deletions
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9
cmd/geth/chaincmd.go
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@ -140,7 +140,9 @@ be gzipped.`,
},
Category: "BLOCKCHAIN COMMANDS",
Description: `
The import-preimages command imports hash preimages from an RLP encoded stream.`,
The import-preimages command imports hash preimages from an RLP encoded stream.
It's deprecated, please use "geth db import" instead.
`,
}
exportPreimagesCommand = cli.Command{
Action: utils.MigrateFlags(exportPreimages),
@ -154,7 +156,9 @@ be gzipped.`,
},
Category: "BLOCKCHAIN COMMANDS",
Description: `
The export-preimages command export hash preimages to an RLP encoded stream`,
The export-preimages command exports hash preimages to an RLP encoded stream.
It's deprecated, please use "geth db export" instead.
`,
}
dumpCommand = cli.Command{
Action: utils.MigrateFlags(dump),
@ -368,7 +372,6 @@ func exportPreimages(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
}
stack, _ := makeConfigNode(ctx)
defer stack.Close()