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// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package rpcreplay
import (
"io"
"log"
"net"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
pb "cloud.google.com/go/rpcreplay/proto/intstore"
)
// intStoreServer is an in-memory implementation of IntStore.
type intStoreServer struct {
pb.IntStoreServer
Addr string
l net.Listener
gsrv *grpc.Server
items map[string]int32
}
func newIntStoreServer() *intStoreServer {
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
log.Fatal(err)
}
s := &intStoreServer{
Addr: l.Addr().String(),
l: l,
gsrv: grpc.NewServer(),
}
pb.RegisterIntStoreServer(s.gsrv, s)
go s.gsrv.Serve(s.l)
return s
}
func (s *intStoreServer) stop() {
s.gsrv.Stop()
s.l.Close()
}
func (s *intStoreServer) Set(_ context.Context, item *pb.Item) (*pb.SetResponse, error) {
old := s.setItem(item)
return &pb.SetResponse{PrevValue: old}, nil
}
func (s *intStoreServer) setItem(item *pb.Item) int32 {
if s.items == nil {
s.items = map[string]int32{}
}
old := s.items[item.Name]
s.items[item.Name] = item.Value
return old
}
func (s *intStoreServer) Get(_ context.Context, req *pb.GetRequest) (*pb.Item, error) {
val, ok := s.items[req.Name]
if !ok {
return nil, status.Errorf(codes.NotFound, "%q", req.Name)
}
return &pb.Item{Name: req.Name, Value: val}, nil
}
func (s *intStoreServer) ListItems(_ *pb.ListItemsRequest, ss pb.IntStore_ListItemsServer) error {
for name, val := range s.items {
if err := ss.Send(&pb.Item{Name: name, Value: val}); err != nil {
return err
}
}
return nil
}
func (s *intStoreServer) SetStream(ss pb.IntStore_SetStreamServer) error {
n := 0
for {
item, err := ss.Recv()
if err == io.EOF {
break
}
if err != nil {
return err
}
s.setItem(item)
n++
}
return ss.SendAndClose(&pb.Summary{Count: int32(n)})
}
func (s *intStoreServer) StreamChat(ss pb.IntStore_StreamChatServer) error {
for {
item, err := ss.Recv()
if err == io.EOF {
break
}
if err != nil {
return err
}
if err := ss.Send(item); err != nil {
return err
}
}
return nil
}
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