| // Copyright 2019 Google LLC |
| // |
| // 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 main wraps the client library in a gRPC interface that a benchmarker can communicate through. |
| package main |
| |
| import ( |
| "context" |
| "io" |
| "io/ioutil" |
| "log" |
| "net" |
| "path/filepath" |
| |
| "cloud.google.com/go/storage" |
| pb "cloud.google.com/go/storage/internal/benchwrapper/proto" |
| "google.golang.org/grpc" |
| "google.golang.org/grpc/credentials" |
| ) |
| |
| const ( |
| // Ephemeral port to run grpc service. |
| port = ":50051" |
| // minRead respresents the number of bytes to read at a time. |
| minRead = 4 |
| ) |
| |
| func main() { |
| ctx := context.Background() |
| c, err := storage.NewClient(ctx) |
| if err != nil { |
| log.Fatal(err) |
| } |
| lis, err := net.Listen("tcp", port) |
| if err != nil { |
| log.Fatal(err) |
| } |
| certificate, err := filepath.Abs("benchwrapper/certificate/server.pem") |
| if err != nil { |
| log.Fatal(err) |
| } |
| key, err := filepath.Abs("benchwrapper/certificate/server.key") |
| if err != nil { |
| log.Fatal(err) |
| } |
| creds, err := credentials.NewServerTLSFromFile(certificate, key) |
| if err != nil { |
| log.Fatal(err) |
| } |
| s := grpc.NewServer(grpc.Creds(creds)) |
| pb.RegisterStorageBenchWrapperServer(s, &server{ |
| c: c, |
| }) |
| log.Printf("Running on %s\n", port) |
| log.Fatal(s.Serve(lis)) |
| } |
| |
| type server struct { |
| c *storage.Client |
| } |
| |
| func (s *server) Read(ctx context.Context, in *pb.ObjectRead) (*pb.EmptyResponse, error) { |
| b := s.c.Bucket(in.GetBucketName()) |
| o := b.Object(in.GetObjectName()) |
| r, err := o.NewReader(ctx) |
| if err != nil { |
| return nil, err |
| } |
| defer r.Close() |
| for int(r.Remain()) > 0 { |
| ba := make([]byte, minRead) |
| _, err := r.Read(ba) |
| if err == io.EOF { |
| return &pb.EmptyResponse{}, nil |
| } |
| if err != nil { |
| return nil, err |
| } |
| } |
| return &pb.EmptyResponse{}, nil |
| } |
| |
| func (s *server) Write(ctx context.Context, in *pb.ObjectWrite) (*pb.EmptyResponse, error) { |
| b := s.c.Bucket(in.GetBucketName()) |
| o := b.Object(in.GetObjectName()) |
| w := o.NewWriter(ctx) |
| content, err := ioutil.ReadFile(in.GetDestination()) |
| if err != nil { |
| return nil, err |
| } |
| w.ContentType = "text/plain" |
| if _, err := w.Write([]byte(content)); err != nil { |
| return nil, err |
| } |
| if err := w.Close(); err != nil { |
| if err == io.EOF { |
| return &pb.EmptyResponse{}, nil |
| } |
| return nil, err |
| } |
| return &pb.EmptyResponse{}, nil |
| } |