rpc, evm: debug_traceTransaction endpoint (#506)

* fix typo

* Added tracers package to debug API

* Add GetTransactionByHash function to backend package

* first version

* traceTransaction first version

* clean PR

* revert debug changes

* Update proto/ethermint/evm/v1/query.proto

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* remove unnecesary panic

* remove internal debug api

* trace transaction javascript tracer

* add support for custom logConfig

* added comment

* traceTransactions tests

* fix linter

* remove unused

* add comments to traceConfig

* update dependencies

* updated endpoints md

* Apply suggestions from code review

* Update x/evm/keeper/grpc_query.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update x/evm/keeper/grpc_query.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

proto/ethermint/evm/v1/evm.proto

@@ -196,4 +196,34 @@ message AccessTuple {
   string address = 1;
   // hex formatted hashes of the storage keys
   repeated string storage_keys = 2 [ (gogoproto.jsontag) = "storageKeys" ];
+}
+
+// TraceConfig holds extra parameters to trace functions.
+message TraceConfig {
+  // custom javascript tracer
+  string tracer = 1;
+  // overrides the default timeout of 5 seconds for JavaScript-based tracing calls
+  string timeout = 2;
+  // number of blocks the tracer is willing to go back
+  uint64 reexec  = 3;
+  // configuration options for structured logger the EVM
+  LogConfig log_config = 4 [ (gogoproto.jsontag) = "logConfig" ];
+}
+
+// LogConfig are the configuration options for structured logger the EVM
+message LogConfig {
+  // disable memory capture
+  bool disable_memory = 1 [ (gogoproto.jsontag) = "disableMemory" ];
+    // disable stack capture
+  bool disable_stack = 2 [ (gogoproto.jsontag) = "disableStack" ];
+  // disable storage capture
+  bool disable_storage = 3 [ (gogoproto.jsontag) = "disableStorage" ];
+  // disable return data capture
+  bool disable_return_data = 4 [ (gogoproto.jsontag) = "disableReturnData" ];
+  // print output during capture end
+  bool debug = 5;
+  // maximum length of output, but zero means unlimited
+  int32 limit = 6;
+  // Chain overrides, can be used to execute a trace using future fork rules
+  ChainConfig overrides = 7;
 }

proto/ethermint/evm/v1/query.proto

@@ -77,6 +77,11 @@ service Query {
   rpc EstimateGas(EthCallRequest) returns (EstimateGasResponse) {
     option (google.api.http).get = "/ethermint/evm/v1/estimate_gas";
   }
+
+  // TraceTx implements the `debug_traceTransaction` rpc api
+  rpc TraceTx(QueryTraceTxRequest) returns (QueryTraceTxResponse) {
+    option (google.api.http).get = "/ethermint/evm/v1/trace_tx";
+  }
 }
 
 // QueryAccountRequest is the request type for the Query/Account RPC method.
@@ -278,3 +283,19 @@ message EstimateGasResponse {
   // the estimated gas
   uint64 gas = 1;
 }
+
+// QueryTraceTxRequest defines TraceTx request
+message QueryTraceTxRequest {
+  // msgEthereumTx for the requested transaction
+  MsgEthereumTx msg = 1;
+  // transaction index
+  uint32 tx_index = 2;
+  // TraceConfig holds extra parameters to trace functions.
+  TraceConfig trace_config = 3;
+}
+
+// QueryTraceTxResponse defines TraceTx response
+message QueryTraceTxResponse {
+  // response serialized in bytes
+  bytes data = 1;
+}