/
server.go
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/
server.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 jobservices
import (
"fmt"
"math"
"net"
"sync"
fnpb "github.com/apache/beam/sdks/v2/go/pkg/beam/model/fnexecution_v1"
jobpb "github.com/apache/beam/sdks/v2/go/pkg/beam/model/jobmanagement_v1"
"golang.org/x/exp/slog"
"google.golang.org/grpc"
)
type Server struct {
jobpb.UnimplementedJobServiceServer
jobpb.UnimplementedArtifactStagingServiceServer
jobpb.UnimplementedArtifactRetrievalServiceServer
fnpb.UnimplementedProvisionServiceServer
// Server management
lis net.Listener
server *grpc.Server
// Job Management
mu sync.Mutex
index uint32
jobs map[string]*Job
// execute defines how a job is executed.
execute func(*Job)
// Artifact hack
artifacts map[string][]byte
}
// NewServer acquires the indicated port.
func NewServer(port int, execute func(*Job)) *Server {
lis, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
if err != nil {
panic(fmt.Sprintf("failed to listen: %v", err))
}
s := &Server{
lis: lis,
jobs: make(map[string]*Job),
execute: execute,
}
slog.Info("Serving JobManagement", slog.String("endpoint", s.Endpoint()))
opts := []grpc.ServerOption{
grpc.MaxRecvMsgSize(math.MaxInt32),
}
s.server = grpc.NewServer(opts...)
jobpb.RegisterJobServiceServer(s.server, s)
jobpb.RegisterArtifactStagingServiceServer(s.server, s)
jobpb.RegisterArtifactRetrievalServiceServer(s.server, s)
return s
}
func (s *Server) getJob(id string) *Job {
s.mu.Lock()
defer s.mu.Unlock()
return s.jobs[id]
}
func (s *Server) Endpoint() string {
_, port, _ := net.SplitHostPort(s.lis.Addr().String())
return fmt.Sprintf("localhost:%v", port)
}
// Serve serves on the started listener. Blocks.
func (s *Server) Serve() {
s.server.Serve(s.lis)
}
// Stop the GRPC server.
func (s *Server) Stop() {
s.server.GracefulStop()
}