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Feat: Lotus Daemon CLI: Auto remove existing chain if importing chain file or snapshot #11277

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merged 5 commits into from
Sep 21, 2023
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Feat: Lotus Daemon CLI: Auto remove existing chain if importing chain file or snapshot #11277

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0033544
Auto remove existing chain if importing chain file or snapshot
mb1896 Sep 19, 2023
10a9eb2
Address review comments
mb1896 Sep 20, 2023
bdffac3
Add to changelog
mb1896 Sep 20, 2023
5b99147
Fix lint
mb1896 Sep 21, 2023
49044b4
Address review comments, again
mb1896 Sep 21, 2023
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Lotus changelog

# UNRELEASED
- chore: Auto remove local chain data when importing chain file or snapshot ([filecoin-project/lotus#11277](https://github.com/filecoin-project/lotus/pull/11277))

## New features
- feat: Added new tracing API (**HIGHLY EXPERIMENTAL**) supporting two RPC methods: `trace_block` and `trace_replayBlockTransactions` ([filecoin-project/lotus#11100](https://github.com/filecoin-project/lotus/pull/11100))
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39 changes: 32 additions & 7 deletions cmd/lotus/daemon.go
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Expand Up @@ -269,7 +269,37 @@ var DaemonCmd = &cli.Command{
}
}

if cctx.Bool("remove-existing-chain") {
chainfile := cctx.String("import-chain")
snapshot := cctx.String("import-snapshot")
willImportChain := false
if chainfile != "" || snapshot != "" {
if chainfile != "" && snapshot != "" {
return fmt.Errorf("cannot specify both 'import-snapshot' and 'import-chain'")
}
willImportChain = true
}

willRemoveChain := cctx.Bool("remove-existing-chain")
if willImportChain && !willRemoveChain {
// Confirm with the user about the intention to remove chain data.
reader := bufio.NewReader(os.Stdin)
fmt.Print("Importing chain or snapshot will by default delete existing local chain data. Do you want to proceed and delete? (yes/no): ")
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Suggested change
fmt.Print("Importing chain or snapshot will by default delete existing local chain data. Do you want to proceed and delete? (yes/no): ")
fmt.Print("Do you want to delete existing local chain data as part of the import process? (yes/no): ")

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(just a bit more clear, there isn't really a default since we're forcing users to specify)

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@mb1896 mb1896 Sep 21, 2023 •
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You are right, however we couldn't differentiate between

  • user not specifying a flag's value
  • user specifically specifying a flag to false

That's why we have to ask for the user's input...

userInput, err := reader.ReadString('\n')
if err != nil {
return xerrors.Errorf("reading user input: %w", err)
}
userInput = strings.ToLower(strings.TrimSpace(userInput))

if userInput == "yes" {
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Probably want to handle case-sensitivity here

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The ToLower() function handled it.

willRemoveChain = true
} else if userInput == "no" {
willRemoveChain = false
} else {
return fmt.Errorf("invalid input. please answer with 'yes' or 'no'")
}
}

if willRemoveChain {
lr, err := repo.NewFS(cctx.String("repo"))
if err != nil {
return xerrors.Errorf("error opening fs repo: %w", err)
Expand All @@ -289,12 +319,7 @@ var DaemonCmd = &cli.Command{
}
}

chainfile := cctx.String("import-chain")
snapshot := cctx.String("import-snapshot")
if chainfile != "" || snapshot != "" {
if chainfile != "" && snapshot != "" {
return fmt.Errorf("cannot specify both 'import-snapshot' and 'import-chain'")
}
if willImportChain {
var issnapshot bool
if chainfile == "" {
chainfile = snapshot
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