Phase2

internal/server/grpc.go

@@ -2,7 +2,6 @@ package server
 
 import (
 	"context"
-
 	"github.com/arcana261/ubroker/pkg/ubroker"
 	"github.com/golang/protobuf/ptypes/empty"
 	"google.golang.org/grpc/codes"
@@ -20,17 +19,57 @@ func NewGRPC(broker ubroker.Broker) ubroker.BrokerServer {
 }
 
 func (s *grpcServicer) Fetch(stream ubroker.Broker_FetchServer) error {
-	return status.Error(codes.Unimplemented, "not implemented")
+	ctx := stream.Context()
+	delivery, err := s.broker.Delivery(ctx)
+	if err != nil {
+		return whyError(err)
+	}
+
+	for {
+		_, err := stream.Recv()
+		if err != nil {
+			return whyError(err)
+		}
+
+		if msg, ok := <-delivery; ok {
+			err := stream.Send(msg)
+			if err != nil {
+				return whyError(err)
+			}
+		} else {
+			return whyError(ubroker.ErrClosed)
+		}
+	}
+
+
 }
 
 func (s *grpcServicer) Acknowledge(ctx context.Context, request *ubroker.AcknowledgeRequest) (*empty.Empty, error) {
-	return &empty.Empty{}, status.Error(codes.Unimplemented, "not implemented")
+	err := s.broker.Acknowledge(ctx, request.GetId())
+	return &empty.Empty{}, whyError(err)
+
 }
 
 func (s *grpcServicer) ReQueue(ctx context.Context, request *ubroker.ReQueueRequest) (*empty.Empty, error) {
-	return &empty.Empty{}, status.Error(codes.Unimplemented, "not implemented")
+	err := s.broker.ReQueue(ctx, request.GetId())
+	return &empty.Empty{}, whyError(err)
 }
 
 func (s *grpcServicer) Publish(ctx context.Context, request *ubroker.Message) (*empty.Empty, error) {
-	return &empty.Empty{}, status.Error(codes.Unimplemented, "not implemented")
+	err := s.broker.Publish(ctx, request)
+	return &empty.Empty{}, whyError(err)
 }
+
+
+func whyError(err error) error {
+	switch err {
+	case nil:
+		return nil
+	case ubroker.ErrClosed:
+		return status.Error(codes.Unavailable, "Unavailable")
+	case ubroker.ErrInvalidID:
+		return status.Error(codes.InvalidArgument, "InvalidArgument")
+	default:
+		return status.Error(codes.Unknown, "Unknown!")
+	}
+}