feat: add provider info query

proto/interchain_security/ccv/consumer/v1/query.proto

@@ -19,6 +19,10 @@ service Query {
   rpc QueryParams(QueryParamsRequest) returns (QueryParamsResponse) {
     option (google.api.http).get = "/interchain_security/ccv/consumer/params";
   }
+
+  rpc QueryProviderChainInfo(QueryProviderInfoRequest) returns (QueryProviderInfoResponse) {
+    option (google.api.http).get = "/interchain_security/ccv/consumer/provider-info";
+  }
 }
 
 // NextFeeDistributionEstimate holds information about next fee distribution
@@ -52,3 +56,12 @@ message QueryParamsResponse {
   // params holds all the parameters of this module.
   Params params = 1 [ (gogoproto.nullable) = false ];
 }
+
+message QueryProviderInfoRequest {}
+
+message QueryProviderInfoResponse {
+  string ChainID = 1;
+  string ClientID = 2;
+  string ConnectionID = 3;
+  string ChannelID = 4;
+}

x/ccv/consumer/keeper/grpc_query.go

@@ -7,7 +7,6 @@ import (
 	"google.golang.org/grpc/status"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
-
 	"github.com/cosmos/interchain-security/v3/x/ccv/consumer/types"
 )
 
@@ -40,3 +39,14 @@ func (k Keeper) QueryParams(c context.Context,
 
 	return &types.QueryParamsResponse{Params: p}, nil
 }
+
+func (k Keeper) QueryProviderChainInfo(c context.Context,
+	req *types.QueryProviderInfoRequest,
+) (*types.QueryProviderInfoResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+	if req == nil {
+		return nil, status.Errorf(codes.InvalidArgument, "empty request")
+	}
+
+	return k.GetProviderChainInfo(ctx)
+}

x/ccv/consumer/keeper/provider_info.go

@@ -0,0 +1,37 @@
+package keeper
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	ibctm "github.com/cosmos/ibc-go/v7/modules/light-clients/07-tendermint"
+	"github.com/cosmos/interchain-security/v3/x/ccv/consumer/types"
+	ccvtypes "github.com/cosmos/interchain-security/v3/x/ccv/types"
+)
+
+func (k Keeper) GetProviderChainInfo(ctx sdk.Context) (*types.QueryProviderInfoResponse, error) {
+	consumerChannelID, found := k.GetProviderChannel(ctx)
+	consumerChannel, _ := k.channelKeeper.GetChannel(ctx, ccvtypes.ConsumerPortID, consumerChannelID)
+	providerChannelID := consumerChannel.GetCounterparty().GetChannelID()
+
+	_, consumerConnection, err := k.connectionKeeper.GetChannelConnection(ctx, ccvtypes.ConsumerPortID, consumerChannelID)
+	if err != nil {
+		return nil, err
+	}
+
+	providerConnection := consumerConnection.GetCounterparty()
+
+	providerClientState, found := k.clientKeeper.GetClientState(ctx, providerConnection.GetClientID())
+	if !found {
+		// todo if return err?
+		return nil, nil
+	}
+	providerChainID := providerClientState.(*ibctm.ClientState).ChainId
+
+	resp := types.QueryProviderInfoResponse{
+		ChainID:      providerChainID,
+		ClientID:     providerConnection.GetClientID(),
+		ConnectionID: providerConnection.GetConnectionID(),
+		ChannelID:    providerChannelID,
+	}
+
+	return &resp, nil
+}