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Add 'export preimages' command #406

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Add 'export preimages' command #406

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14 changes: 14 additions & 0 deletions cmd/opera/launcher/chaincmd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,20 @@ Requires a first argument of the file to write to.
Optional second and third arguments control the first and
last epoch to write. If the file ends with .gz, the output will
be gzipped
`,
},
{
Name: "preimages",
Usage: "Export blockchain account preimages",
ArgsUsage: "<filename>",
Action: utils.MigrateFlags(exportPreimages),
Flags: []cli.Flag{
DataDirFlag,
},
Description: `
opera export preimages

Requires a first argument of the file to write to.
`,
},
{
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16 changes: 16 additions & 0 deletions cmd/opera/launcher/export.go
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,22 @@ var (
// always print out progress. This avoids the user wondering what's going on.
const statsReportLimit = 8 * time.Second

func exportPreimages(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
}

cfg := makeAllConfigs(ctx)

rawDbs := makeDirectDBsProducer(cfg)
gdb := makeGossipStore(rawDbs, cfg)
defer gdb.Close()

fn := ctx.Args().First()

return utils.ExportPreimages(gdb.EvmStore().EvmDb, fn)
}

func exportEvents(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
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