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blockchain/v2: integrate with state sync

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Integrates the blockchain v2 reactor with state sync, fixes #4765. This mostly involves deferring fast syncing until after state sync completes. I tried a few different approaches, this was the least effort:

* `Reactor.events` is `nil` if no fast sync is in progress, in which case events are not dispatched - most importantly `AddPeer`.

* Accept status messages from unknown peers in the scheduler and register them as ready. On fast sync startup, broadcast status requests to all existing peers.

* When switching from state sync, first send a `bcResetState` message to the processor and scheduler to update their states - most importantly the initial block height.

* When fast sync completes, shut down event loop, scheduler and processor, and set `events` channel to `nil`.
This commit is contained in:
Erik Grinaker
2020-05-07 12:34:01 +02:00
committed by GitHub
parent 826a7150b7
commit eb443f4b77
8 changed files with 203 additions and 83 deletions
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4
node/node.go
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@@ -683,10 +683,6 @@ func NewNode(config *cfg.Config,
logger.Info("Found local state with non-zero height, skipping state sync")
stateSync = false
}
// Don't check fastSync == true, since the v2 reactor has a bug where it fast syncs regardless.
if stateSync && config.FastSync.Version == "v2" {
return nil, errors.New("state sync is not supported with blockchain v2 reactor")
}
// Create the handshaker, which calls RequestInfo, sets the AppVersion on the state,
// and replays any blocks as necessary to sync tendermint with the app.