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query_server.go
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/
query_server.go
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package keeper
import (
"context"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/query"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
hubtypes "github.com/sentinel-official/hub/types"
"github.com/sentinel-official/hub/x/provider/types"
)
var (
_ types.QueryServiceServer = (*queryServer)(nil)
)
type queryServer struct {
Keeper
}
func NewQueryServiceServer(k Keeper) types.QueryServiceServer {
return &queryServer{k}
}
func (q *queryServer) QueryProvider(c context.Context, req *types.QueryProviderRequest) (*types.QueryProviderResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "empty request")
}
addr, err := hubtypes.ProvAddressFromBech32(req.Address)
if err != nil {
return nil, status.Errorf(codes.InvalidArgument, "invalid address %s", req.Address)
}
ctx := sdk.UnwrapSDKContext(c)
item, found := q.GetProvider(ctx, addr)
if !found {
return nil, status.Errorf(codes.NotFound, "provider does not exist for address %s", req.Address)
}
return &types.QueryProviderResponse{Provider: item}, nil
}
func (q *queryServer) QueryProviders(c context.Context, req *types.QueryProvidersRequest) (*types.QueryProvidersResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "empty request")
}
var (
items types.Providers
keyPrefix []byte
ctx = sdk.UnwrapSDKContext(c)
)
switch req.Status {
case hubtypes.StatusActive:
keyPrefix = types.ActiveProviderKeyPrefix
case hubtypes.StatusInactive:
keyPrefix = types.InactiveProviderKeyPrefix
default:
keyPrefix = types.ProviderKeyPrefix
}
store := prefix.NewStore(q.Store(ctx), keyPrefix)
pagination, err := query.Paginate(store, req.Pagination, func(_, value []byte) error {
var item types.Provider
if err := q.cdc.Unmarshal(value, &item); err != nil {
return err
}
items = append(items, item)
return nil
})
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return &types.QueryProvidersResponse{Providers: items, Pagination: pagination}, nil
}
func (q *queryServer) QueryParams(c context.Context, _ *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
var (
ctx = sdk.UnwrapSDKContext(c)
params = q.GetParams(ctx)
)
return &types.QueryParamsResponse{Params: params}, nil
}