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grpc_query.go
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grpc_query.go
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package keeper
import (
"context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/params/types/proposal"
)
var _ proposal.QueryServer = Keeper{}
// Params returns subspace params
func (k Keeper) Params(c context.Context, req *proposal.QueryParamsRequest) (*proposal.QueryParamsResponse, error) {
if req == nil {
return nil, status.Errorf(codes.InvalidArgument, "empty request")
}
if req.Subspace == "" || req.Key == "" {
return nil, status.Errorf(codes.InvalidArgument, "invalid request")
}
ss, ok := k.GetSubspace(req.Subspace)
if !ok {
return nil, sdkerrors.Wrap(proposal.ErrUnknownSubspace, req.Subspace)
}
ctx := sdk.UnwrapSDKContext(c)
rawValue := ss.GetRaw(ctx, []byte(req.Key))
param := proposal.NewParamChange(req.Subspace, req.Key, string(rawValue))
return &proposal.QueryParamsResponse{Param: param}, nil
}
// Subspaces implements the gRPC query handler for fetching all registered
// subspaces and all the keys for each subspace.
func (k Keeper) Subspaces(
goCtx context.Context,
req *proposal.QuerySubspacesRequest,
) (*proposal.QuerySubspacesResponse, error) {
if req == nil {
return nil, status.Errorf(codes.InvalidArgument, "empty request")
}
spaces := k.GetSubspaces()
resp := &proposal.QuerySubspacesResponse{
Subspaces: make([]*proposal.Subspace, len(spaces)),
}
ctx := sdk.UnwrapSDKContext(goCtx)
for i, ss := range spaces {
var keys []string
ss.IterateKeys(ctx, func(key []byte) bool {
keys = append(keys, string(key))
return false
})
resp.Subspaces[i] = &proposal.Subspace{
Subspace: ss.Name(),
Keys: keys,
}
}
return resp, nil
}