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https://github.com/ceph/ceph-csi.git
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c1ee11261e
Bumps the k8s-dependencies group with 1 update in the / directory: [sigs.k8s.io/controller-runtime](https://github.com/kubernetes-sigs/controller-runtime). Updates `sigs.k8s.io/controller-runtime` from 0.17.3 to 0.18.2 - [Release notes](https://github.com/kubernetes-sigs/controller-runtime/releases) - [Changelog](https://github.com/kubernetes-sigs/controller-runtime/blob/main/RELEASE.md) - [Commits](https://github.com/kubernetes-sigs/controller-runtime/compare/v0.17.3...v0.18.2) --- updated-dependencies: - dependency-name: sigs.k8s.io/controller-runtime dependency-type: direct:production update-type: version-update:semver-minor dependency-group: k8s-dependencies ... Signed-off-by: dependabot[bot] <support@github.com>
110 lines
3.1 KiB
Go
110 lines
3.1 KiB
Go
/*
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Copyright 2022 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 manager
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import (
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"context"
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"errors"
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"net"
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"net/http"
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"time"
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crlog "sigs.k8s.io/controller-runtime/pkg/log"
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)
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var (
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_ Runnable = (*Server)(nil)
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_ LeaderElectionRunnable = (*Server)(nil)
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)
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// Server is a general purpose HTTP server Runnable for a manager.
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// It is used to serve some internal handlers for health probes and profiling,
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// but it can also be used to run custom servers.
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type Server struct {
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// Name is an optional string that describes the purpose of the server. It is used in logs to distinguish
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// among multiple servers.
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Name string
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// Server is the HTTP server to run. It is required.
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Server *http.Server
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// Listener is an optional listener to use. If not set, the server start a listener using the server.Addr.
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// Using a listener is useful when the port reservation needs to happen in advance of this runnable starting.
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Listener net.Listener
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// OnlyServeWhenLeader is an optional bool that indicates that the server should only be started when the manager is the leader.
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OnlyServeWhenLeader bool
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// ShutdownTimeout is an optional duration that indicates how long to wait for the server to shutdown gracefully. If not set,
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// the server will wait indefinitely for all connections to close.
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ShutdownTimeout *time.Duration
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}
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// Start starts the server. It will block until the server is stopped or an error occurs.
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func (s *Server) Start(ctx context.Context) error {
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log := crlog.FromContext(ctx)
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if s.Name != "" {
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log = log.WithValues("name", s.Name)
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}
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log = log.WithValues("addr", s.addr())
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serverShutdown := make(chan struct{})
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go func() {
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<-ctx.Done()
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log.Info("shutting down server")
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shutdownCtx := context.Background()
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if s.ShutdownTimeout != nil {
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var shutdownCancel context.CancelFunc
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shutdownCtx, shutdownCancel = context.WithTimeout(context.Background(), *s.ShutdownTimeout)
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defer shutdownCancel()
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}
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if err := s.Server.Shutdown(shutdownCtx); err != nil {
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log.Error(err, "error shutting down server")
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}
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close(serverShutdown)
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}()
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log.Info("starting server")
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if err := s.serve(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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return err
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}
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<-serverShutdown
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return nil
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}
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// NeedLeaderElection returns true if the server should only be started when the manager is the leader.
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func (s *Server) NeedLeaderElection() bool {
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return s.OnlyServeWhenLeader
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}
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func (s *Server) addr() string {
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if s.Listener != nil {
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return s.Listener.Addr().String()
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}
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return s.Server.Addr
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}
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func (s *Server) serve() error {
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if s.Listener != nil {
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return s.Server.Serve(s.Listener)
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}
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return s.Server.ListenAndServe()
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}
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