github.com/Finschia/finschia-sdk@v0.48.1/x/params/keeper/grpc_query.go (about)

     1  package keeper
     2  
     3  import (
     4  	"context"
     5  
     6  	"google.golang.org/grpc/codes"
     7  	"google.golang.org/grpc/status"
     8  
     9  	sdk "github.com/Finschia/finschia-sdk/types"
    10  	sdkerrors "github.com/Finschia/finschia-sdk/types/errors"
    11  	"github.com/Finschia/finschia-sdk/x/params/types/proposal"
    12  )
    13  
    14  var _ proposal.QueryServer = Keeper{}
    15  
    16  // Params returns subspace params
    17  func (k Keeper) Params(c context.Context, req *proposal.QueryParamsRequest) (*proposal.QueryParamsResponse, error) {
    18  	if req == nil {
    19  		return nil, status.Errorf(codes.InvalidArgument, "empty request")
    20  	}
    21  
    22  	if req.Subspace == "" || req.Key == "" {
    23  		return nil, status.Errorf(codes.InvalidArgument, "invalid request")
    24  	}
    25  
    26  	ss, ok := k.GetSubspace(req.Subspace)
    27  	if !ok {
    28  		return nil, sdkerrors.Wrap(proposal.ErrUnknownSubspace, req.Subspace)
    29  	}
    30  
    31  	ctx := sdk.UnwrapSDKContext(c)
    32  	rawValue := ss.GetRaw(ctx, []byte(req.Key))
    33  	param := proposal.NewParamChange(req.Subspace, req.Key, string(rawValue))
    34  
    35  	return &proposal.QueryParamsResponse{Param: param}, nil
    36  }