mirror of https://github.com/docker/cli.git
120 lines
3.0 KiB
Go
120 lines
3.0 KiB
Go
/*
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*
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* Copyright 2024 gRPC authors.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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*/
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package channelz
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import (
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"fmt"
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"sync/atomic"
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)
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// Server is the channelz representation of a server.
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type Server struct {
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Entity
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ID int64
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RefName string
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ServerMetrics ServerMetrics
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closeCalled bool
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sockets map[int64]string
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listenSockets map[int64]string
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cm *channelMap
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}
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// ServerMetrics defines a struct containing metrics for servers.
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type ServerMetrics struct {
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// The number of incoming calls started on the server.
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CallsStarted atomic.Int64
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// The number of incoming calls that have completed with an OK status.
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CallsSucceeded atomic.Int64
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// The number of incoming calls that have a completed with a non-OK status.
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CallsFailed atomic.Int64
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// The last time a call was started on the server.
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LastCallStartedTimestamp atomic.Int64
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}
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// NewServerMetricsForTesting returns an initialized ServerMetrics.
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func NewServerMetricsForTesting(started, succeeded, failed, timestamp int64) *ServerMetrics {
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sm := &ServerMetrics{}
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sm.CallsStarted.Store(started)
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sm.CallsSucceeded.Store(succeeded)
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sm.CallsFailed.Store(failed)
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sm.LastCallStartedTimestamp.Store(timestamp)
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return sm
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}
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func (sm *ServerMetrics) CopyFrom(o *ServerMetrics) {
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sm.CallsStarted.Store(o.CallsStarted.Load())
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sm.CallsSucceeded.Store(o.CallsSucceeded.Load())
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sm.CallsFailed.Store(o.CallsFailed.Load())
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sm.LastCallStartedTimestamp.Store(o.LastCallStartedTimestamp.Load())
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}
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// ListenSockets returns the listening sockets for s.
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func (s *Server) ListenSockets() map[int64]string {
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db.mu.RLock()
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defer db.mu.RUnlock()
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return copyMap(s.listenSockets)
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}
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// String returns a printable description of s.
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func (s *Server) String() string {
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return fmt.Sprintf("Server #%d", s.ID)
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}
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func (s *Server) id() int64 {
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return s.ID
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}
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func (s *Server) addChild(id int64, e entry) {
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switch v := e.(type) {
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case *Socket:
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switch v.SocketType {
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case SocketTypeNormal:
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s.sockets[id] = v.RefName
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case SocketTypeListen:
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s.listenSockets[id] = v.RefName
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}
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default:
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logger.Errorf("cannot add a child (id = %d) of type %T to a server", id, e)
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}
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}
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func (s *Server) deleteChild(id int64) {
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delete(s.sockets, id)
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delete(s.listenSockets, id)
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s.deleteSelfIfReady()
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}
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func (s *Server) triggerDelete() {
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s.closeCalled = true
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s.deleteSelfIfReady()
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}
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func (s *Server) deleteSelfIfReady() {
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if !s.closeCalled || len(s.sockets)+len(s.listenSockets) != 0 {
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return
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}
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s.cm.deleteEntry(s.ID)
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}
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func (s *Server) getParentID() int64 {
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return 0
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}
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