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main: force the user to drop tx and addr indexes for pruning

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This change is part of the effort to add pruning support to btcd.

The addr and tx indexes are not useful when the node is pruned as the
actual block data that the indexes point to are gone.  If the user had
previously enabled them, then explicitly require an action from the user
to remove the indexes before letting the user enable pruning.
This commit is contained in:
Calvin Kim 2023-08-22 16:05:54 +09:00
parent e27fcac9cd
commit f161a31a93
1 changed files with 22 additions and 0 deletions
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22
btcd.go
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@ -176,6 +176,28 @@ func btcdMain(serverChan chan<- *server) error {
return err
}
// Enforce removal of txindex and addrindex if user requested pruning.
// This is to require explicit action from the user before removing
// indexes that won't be useful when block files are pruned.
//
// NOTE: The order is important here because dropping the tx index also
// drops the address index since it relies on it. We explicitly make the
// user drop both indexes if --addrindex was enabled previously.
if cfg.Prune != 0 && indexers.AddrIndexInitialized(db) {
err = fmt.Errorf("--prune flag may not be given when the address index " +
"has been initialized. Please drop the address index with the " +
"--dropaddrindex flag before enabling pruning")
btcdLog.Errorf("%v", err)
return err
}
if cfg.Prune != 0 && indexers.TxIndexInitialized(db) {
err = fmt.Errorf("--prune flag may not be given when the transaction index " +
"has been initialized. Please drop the transaction index with the " +
"--droptxindex flag before enabling pruning")
btcdLog.Errorf("%v", err)
return err
}
// The config file is already created if it did not exist and the log
// file has already been opened by now so we only need to allow
// creating rpc cert and key files if they don't exist.