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inspect: add inspect mode for debugging crashed tendermint node (#6785)

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EDIT: Updated, see [comment below]( https://github.com/tendermint/tendermint/pull/6785#issuecomment-897793175)

This change adds a sketch of the `Debug` mode. 

This change adds a `Debug` struct to the node package. This `Debug` struct is intended to be created and started by a command in the `cmd` directory. The `Debug` struct runs the RPC server on the data directories: both the state store and the block store.

This change required a good deal of refactoring. Namely, a new `rpc.go` file was added to the `node` package. This file encapsulates functions for starting RPC servers used by nodes. A potential additional change is to further factor this code into shared code _in_ the `rpc` package. 

Minor API tweaks were also made that seemed appropriate such as the mechanism for fetching routes from the `rpc/core` package.

Additional work is required to register the `Debug` service as a command in the `cmd` directory but I am looking for feedback on if this direction seems appropriate before diving much further.

closes: #5908
This commit is contained in:
William Banfield
2021-08-24 14:12:06 -04:00
committed by GitHub
parent 6d5ff590c3
commit bc2b529b95
21 changed files with 1200 additions and 116 deletions
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27
node/node.go
View File

@@ -441,22 +441,23 @@ func makeNode(config *cfg.Config,
ProxyAppQuery: proxyApp.Query(),
ProxyAppMempool: proxyApp.Mempool(),
StateStore: stateStore,
BlockStore: blockStore,
EvidencePool: evPool,
ConsensusState: csState,
StateStore: stateStore,
BlockStore: blockStore,
EvidencePool: evPool,
ConsensusState: csState,
ConsensusReactor: csReactor,
BlockSyncReactor: bcReactor.(cs.BlockSyncReactor),
P2PPeers: sw,
PeerManager: peerManager,
GenDoc: genDoc,
EventSinks: eventSinks,
ConsensusReactor: csReactor,
EventBus: eventBus,
Mempool: mp,
Logger: logger.With("module", "rpc"),
Config: *config.RPC,
GenDoc: genDoc,
EventSinks: eventSinks,
EventBus: eventBus,
Mempool: mp,
Logger: logger.With("module", "rpc"),
Config: *config.RPC,
},
}
@@ -825,7 +826,7 @@ func (n *nodeImpl) startRPC() ([]net.Listener, error) {
rpcserver.RegisterRPCFuncs(mux, routes, rpcLogger)
listener, err := rpcserver.Listen(
listenAddr,
config,
config.MaxOpenConnections,
)
if err != nil {
return nil, err
@@ -883,7 +884,7 @@ func (n *nodeImpl) startRPC() ([]net.Listener, error) {
if config.WriteTimeout <= n.config.RPC.TimeoutBroadcastTxCommit {
config.WriteTimeout = n.config.RPC.TimeoutBroadcastTxCommit + 1*time.Second
}
listener, err := rpcserver.Listen(grpcListenAddr, config)
listener, err := rpcserver.Listen(grpcListenAddr, config.MaxOpenConnections)
if err != nil {
return nil, err
}