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80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
// +build !dockerless
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package remote
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import (
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"fmt"
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"google.golang.org/grpc"
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runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/pkg/kubelet/dockershim"
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"k8s.io/kubernetes/pkg/kubelet/util"
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)
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// maxMsgSize use 16MB as the default message size limit.
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// grpc library default is 4MB
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const maxMsgSize = 1024 * 1024 * 16
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// DockerServer is the grpc server of dockershim.
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type DockerServer struct {
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// endpoint is the endpoint to serve on.
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endpoint string
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// service is the docker service which implements runtime and image services.
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service dockershim.CRIService
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// server is the grpc server.
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server *grpc.Server
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}
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// NewDockerServer creates the dockershim grpc server.
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func NewDockerServer(endpoint string, s dockershim.CRIService) *DockerServer {
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return &DockerServer{
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endpoint: endpoint,
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service: s,
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}
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}
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// Start starts the dockershim grpc server.
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func (s *DockerServer) Start() error {
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// Start the internal service.
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if err := s.service.Start(); err != nil {
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klog.Errorf("Unable to start docker service")
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return err
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}
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klog.V(2).Infof("Start dockershim grpc server")
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l, err := util.CreateListener(s.endpoint)
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if err != nil {
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return fmt.Errorf("failed to listen on %q: %v", s.endpoint, err)
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}
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// Create the grpc server and register runtime and image services.
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s.server = grpc.NewServer(
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grpc.MaxRecvMsgSize(maxMsgSize),
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grpc.MaxSendMsgSize(maxMsgSize),
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)
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runtimeapi.RegisterRuntimeServiceServer(s.server, s.service)
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runtimeapi.RegisterImageServiceServer(s.server, s.service)
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go func() {
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if err := s.server.Serve(l); err != nil {
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klog.Fatalf("Failed to serve connections: %v", err)
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}
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}()
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return nil
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}
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