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rpc: add BlockByHash to Client (#4923)

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Ethermint currently has to maintain a map height-> block hash on the store (see here) as it needs to expose the eth_getBlockByHash JSON-RPC query for Web3 compatibility. This query is currently not supported by the tendermint RPC client.
This commit is contained in:
Federico Kunze
2020-06-01 09:04:45 +04:00
committed by GitHub
parent 0572315f77
commit da924fc62d
10 changed files with 103 additions and 7 deletions
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lite/proxy/proxy.go
+14 -7
View File
@@ -68,13 +68,14 @@ func RPCRoutes(c rpcclient.Client) map[string]*rpcserver.RPCFunc {
"unsubscribe_all": rpcserver.NewWSRPCFunc(c.(Wrapper).UnsubscribeAllWS, ""),
// info API
"status": rpcserver.NewRPCFunc(makeStatusFunc(c), ""),
"blockchain": rpcserver.NewRPCFunc(makeBlockchainInfoFunc(c), "minHeight,maxHeight"),
"genesis": rpcserver.NewRPCFunc(makeGenesisFunc(c), ""),
"block": rpcserver.NewRPCFunc(makeBlockFunc(c), "height"),
"commit": rpcserver.NewRPCFunc(makeCommitFunc(c), "height"),
"tx": rpcserver.NewRPCFunc(makeTxFunc(c), "hash,prove"),
"validators": rpcserver.NewRPCFunc(makeValidatorsFunc(c), "height"),
"status": rpcserver.NewRPCFunc(makeStatusFunc(c), ""),
"blockchain": rpcserver.NewRPCFunc(makeBlockchainInfoFunc(c), "minHeight,maxHeight"),
"genesis": rpcserver.NewRPCFunc(makeGenesisFunc(c), ""),
"block": rpcserver.NewRPCFunc(makeBlockFunc(c), "height"),
"block_by_hash": rpcserver.NewRPCFunc(makeBlockByHashFunc(c), "hash"),
"commit": rpcserver.NewRPCFunc(makeCommitFunc(c), "height"),
"tx": rpcserver.NewRPCFunc(makeTxFunc(c), "hash,prove"),
"validators": rpcserver.NewRPCFunc(makeValidatorsFunc(c), "height"),
// broadcast API
"broadcast_tx_commit": rpcserver.NewRPCFunc(makeBroadcastTxCommitFunc(c), "tx"),
@@ -115,6 +116,12 @@ func makeBlockFunc(c rpcclient.Client) func(ctx *rpctypes.Context, height *int64
}
}
func makeBlockByHashFunc(c rpcclient.Client) func(ctx *rpctypes.Context, hash []byte) (*ctypes.ResultBlock, error) {
return func(ctx *rpctypes.Context, hash []byte) (*ctypes.ResultBlock, error) {
return c.BlockByHash(hash)
}
}
func makeCommitFunc(c rpcclient.Client) func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultCommit, error) {
return func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultCommit, error) {
return c.Commit(height)
lite/proxy/wrapper.go
+20
View File
@@ -112,6 +112,26 @@ func (w Wrapper) Block(height *int64) (*ctypes.ResultBlock, error) {
return resBlock, nil
}
// BlockByHash returns an entire block and verifies all signatures
func (w Wrapper) BlockByHash(hash []byte) (*ctypes.ResultBlock, error) {
resBlock, err := w.Client.BlockByHash(hash)
if err != nil {
return nil, err
}
// get a checkpoint to verify from
resCommit, err := w.Commit(&resBlock.Block.Height)
if err != nil {
return nil, err
}
sh := resCommit.SignedHeader
err = ValidateBlock(resBlock.Block, sh)
if err != nil {
return nil, err
}
return resBlock, nil
}
// Commit downloads the Commit and certifies it with the lite.
//
// This is the foundation for all other verification in this module