x/Slashing: gRPC query service (#6597)

* Add grpc methods - slashing

* Add slashing grpc queries

* Add tests

* Remove duplicate declarations

* Add signing infos

* Update query test

* Use suite for grpc tests

* Update godoc

Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

proto/cosmos/slashing/query.proto

@@ -0,0 +1,52 @@
+syntax = "proto3";
+package cosmos.slashing;
+
+import "cosmos/query/pagination.proto";
+import "gogoproto/gogo.proto";
+import "cosmos/slashing/slashing.proto";
+
+option go_package = "github.com/cosmos/cosmos-sdk/x/slashing/types";
+
+// Query provides defines the gRPC querier service
+service Query {
+	// Params queries the parameters of slashing module
+	rpc Params (QueryParamsRequest) returns (QueryParamsResponse){}
+
+	// SigningInfo queries the signing info of given cons address
+	rpc SigningInfo (QuerySigningInfoRequest) returns (QuerySigningInfoResponse) {}
+
+	// SigningInfos queries signing info of all validators
+	rpc SigningInfos (QuerySigningInfosRequest) returns (QuerySigningInfosResponse) {}
+}
+
+// QueryParamsRequest is the request type for the Query/Parameters RPC method
+message QueryParamsRequest{}
+
+// QueryParamsResponse is the response type for the Query/Parameters RPC method
+message QueryParamsResponse{
+	cosmos.slashing.Params params = 1[(gogoproto.nullable) = false];
+}
+
+// QuerySigningInfoRequest is the request type for the Query/SigningInfo RPC method
+message QuerySigningInfoRequest{
+	// cons_address is the address to query signing info of
+	bytes cons_address = 1 [(gogoproto.casttype) = "github.com/cosmos/cosmos-sdk/types.ConsAddress"];
+}
+
+// QuerySigningInfoResponse is the response type for the Query/SigningInfo RPC method
+message QuerySigningInfoResponse{
+	// val_signing_info is the signing info of requested val cons address
+	cosmos.slashing.ValidatorSigningInfo val_signing_info = 1[(gogoproto.nullable)= false];
+}
+
+// QuerySigningInfosRequest is the request type for the Query/SigningInfos RPC method
+message QuerySigningInfosRequest{
+	cosmos.query.PageRequest req = 1;
+}
+
+// QuerySigningInfosResponse is the response type for the Query/SigningInfos RPC method
+message QuerySigningInfosResponse{
+	// info is the signing info of all validators
+	repeated cosmos.slashing.ValidatorSigningInfo info = 1[(gogoproto.nullable)= false];
+	cosmos.query.PageResponse res =2;
+}

proto/cosmos/slashing/slashing.proto

@@ -5,6 +5,7 @@ option go_package            = "github.com/cosmos/cosmos-sdk/x/slashing/types";
 option (gogoproto.equal_all) = true;
 
 import "gogoproto/gogo.proto";
+import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 
 // MsgUnjail - struct for unjailing jailed validator
@@ -40,3 +41,25 @@ message ValidatorSigningInfo {
   // missed blocks counter (to avoid scanning the array every time)
   int64 missed_blocks_counter = 6 [(gogoproto.moretags) = "yaml:\"missed_blocks_counter\""];
 }
+
+// Params - used for initializing default parameter for slashing at genesis
+message Params{
+  int64 signed_blocks_window = 1 [(gogoproto.jsontag) = "json:\"signed_blocks_window\"",
+                                 (gogoproto.moretags) = "yaml:\"signed_blocks_window\""];
+  bytes min_signed_per_window = 2 [(gogoproto.jsontag) = "json:\"min_signed_per_window\"",
+                                  (gogoproto.moretags) = "yaml:\"min_signed_per_window\"",
+                                  (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
+                                  (gogoproto.nullable)   = false];
+  google.protobuf.Duration downtime_jail_duration = 3 [(gogoproto.nullable)    = false,
+                                                       (gogoproto.stdduration) = true,
+                                                      (gogoproto.jsontag) = "json:\"downtime_jail_duration\"",
+                                                       (gogoproto.moretags)    = "yaml:\"downtime_jail_duration\""];
+  bytes slash_fraction_double_sign = 4 [(gogoproto.jsontag) = "json:\"slash_fraction_double_sign\"",
+                                       (gogoproto.moretags) = "yaml:\"slash_fraction_double_sign\"",
+                                       (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
+                                       (gogoproto.nullable)   = false];
+  bytes slash_fraction_downtime = 5 [(gogoproto.jsontag) = "json:\"slash_fraction_downtime\"",
+                                    (gogoproto.moretags) = "yaml:\"slash_fraction_downtime\"",
+                                    (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
+                                    (gogoproto.nullable) = false];
+}