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multi: add new dropgraphzombies command
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| package main | ||
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| import ( | ||
| "fmt" | ||
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| "github.com/lightninglabs/chantools/lnd" | ||
| "github.com/lightningnetwork/lnd/channeldb" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
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| var ( | ||
| zombieBucket = []byte("zombie-index") | ||
| ) | ||
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| type dropGraphZombiesCommand struct { | ||
| ChannelDB string | ||
| NodeIdentityKey string | ||
| FixOnly bool | ||
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| SingleChannel uint64 | ||
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| cmd *cobra.Command | ||
| } | ||
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| func newDropGraphZombiesCommand() *cobra.Command { | ||
| cc := &dropGraphZombiesCommand{} | ||
| cc.cmd = &cobra.Command{ | ||
| Use: "dropgraphzombies", | ||
| Short: "Remove all channels identified as zombies from the " + | ||
| "graph to force a re-sync of the graph", | ||
| Long: `This command removes all channels that were identified as | ||
| zombies from the local graph. | ||
| This will cause lnd to re-download all those channels from the network and can | ||
| be helpful to fix a graph that is out of sync with the network. | ||
| CAUTION: Running this command will make it impossible to use the channel DB | ||
| with an older version of lnd. Downgrading is not possible and you'll need to | ||
| run lnd ` + lndVersion + ` or later after using this command!'`, | ||
| Example: `chantools dropgraphzombies \ | ||
| --channeldb ~/.lnd/data/graph/mainnet/channel.db`, | ||
| RunE: cc.Execute, | ||
| } | ||
| cc.cmd.Flags().StringVar( | ||
| &cc.ChannelDB, "channeldb", "", "lnd channel.db file to drop "+ | ||
| "zombies from", | ||
| ) | ||
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| return cc.cmd | ||
| } | ||
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| func (c *dropGraphZombiesCommand) Execute(_ *cobra.Command, _ []string) error { | ||
| // Check that we have a channel DB. | ||
| if c.ChannelDB == "" { | ||
| return fmt.Errorf("channel DB is required") | ||
| } | ||
| db, err := lnd.OpenDB(c.ChannelDB, false) | ||
| if err != nil { | ||
| return fmt.Errorf("error opening rescue DB: %w", err) | ||
| } | ||
| defer func() { _ = db.Close() }() | ||
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| log.Infof("Dropping zombie channel bucket") | ||
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| rwTx, err := db.BeginReadWriteTx() | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| success := false | ||
| defer func() { | ||
| if !success { | ||
| _ = rwTx.Rollback() | ||
| } | ||
| }() | ||
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| edges := rwTx.ReadWriteBucket(edgeBucket) | ||
| if edges == nil { | ||
| return channeldb.ErrGraphNoEdgesFound | ||
| } | ||
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| if err := edges.DeleteNestedBucket(zombieBucket); err != nil { | ||
| return err | ||
| } | ||
|
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| success = true | ||
| return rwTx.Commit() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| ## chantools dropgraphzombies | ||
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| Remove all channels identified as zombies from the graph to force a re-sync of the graph | ||
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| ### Synopsis | ||
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| This command removes all channels that were identified as | ||
| zombies from the local graph. | ||
|
|
||
| This will cause lnd to re-download all those channels from the network and can | ||
| be helpful to fix a graph that is out of sync with the network. | ||
|
|
||
| CAUTION: Running this command will make it impossible to use the channel DB | ||
| with an older version of lnd. Downgrading is not possible and you'll need to | ||
| run lnd v0.16.0-beta or later after using this command!' | ||
|
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| ``` | ||
| chantools dropgraphzombies [flags] | ||
| ``` | ||
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| ### Examples | ||
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| ``` | ||
| chantools dropgraphzombies \ | ||
| --channeldb ~/.lnd/data/graph/mainnet/channel.db | ||
| ``` | ||
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| ### Options | ||
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| ``` | ||
| --channeldb string lnd channel.db file to drop zombies from | ||
| -h, --help help for dropgraphzombies | ||
| ``` | ||
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| ### Options inherited from parent commands | ||
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| ``` | ||
| -r, --regtest Indicates if regtest parameters should be used | ||
| -s, --signet Indicates if the public signet parameters should be used | ||
| -t, --testnet Indicates if testnet parameters should be used | ||
| ``` | ||
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| ### SEE ALSO | ||
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| * [chantools](chantools.md) - Chantools helps recover funds from lightning channels | ||
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