chore: vendor

vendor/google.golang.org/grpc/internal/channelz/server.go

@@ -0,0 +1,119 @@
+/*
+ *
+ * Copyright 2024 gRPC authors.
+ *
+ * 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 channelz
+
+import (
+	"fmt"
+	"sync/atomic"
+)
+
+// Server is the channelz representation of a server.
+type Server struct {
+	Entity
+	ID      int64
+	RefName string
+
+	ServerMetrics ServerMetrics
+
+	closeCalled   bool
+	sockets       map[int64]string
+	listenSockets map[int64]string
+	cm            *channelMap
+}
+
+// ServerMetrics defines a struct containing metrics for servers.
+type ServerMetrics struct {
+	// The number of incoming calls started on the server.
+	CallsStarted atomic.Int64
+	// The number of incoming calls that have completed with an OK status.
+	CallsSucceeded atomic.Int64
+	// The number of incoming calls that have a completed with a non-OK status.
+	CallsFailed atomic.Int64
+	// The last time a call was started on the server.
+	LastCallStartedTimestamp atomic.Int64
+}
+
+// NewServerMetricsForTesting returns an initialized ServerMetrics.
+func NewServerMetricsForTesting(started, succeeded, failed, timestamp int64) *ServerMetrics {
+	sm := &ServerMetrics{}
+	sm.CallsStarted.Store(started)
+	sm.CallsSucceeded.Store(succeeded)
+	sm.CallsFailed.Store(failed)
+	sm.LastCallStartedTimestamp.Store(timestamp)
+	return sm
+}
+
+func (sm *ServerMetrics) CopyFrom(o *ServerMetrics) {
+	sm.CallsStarted.Store(o.CallsStarted.Load())
+	sm.CallsSucceeded.Store(o.CallsSucceeded.Load())
+	sm.CallsFailed.Store(o.CallsFailed.Load())
+	sm.LastCallStartedTimestamp.Store(o.LastCallStartedTimestamp.Load())
+}
+
+// ListenSockets returns the listening sockets for s.
+func (s *Server) ListenSockets() map[int64]string {
+	db.mu.RLock()
+	defer db.mu.RUnlock()
+	return copyMap(s.listenSockets)
+}
+
+// String returns a printable description of s.
+func (s *Server) String() string {
+	return fmt.Sprintf("Server #%d", s.ID)
+}
+
+func (s *Server) id() int64 {
+	return s.ID
+}
+
+func (s *Server) addChild(id int64, e entry) {
+	switch v := e.(type) {
+	case *Socket:
+		switch v.SocketType {
+		case SocketTypeNormal:
+			s.sockets[id] = v.RefName
+		case SocketTypeListen:
+			s.listenSockets[id] = v.RefName
+		}
+	default:
+		logger.Errorf("cannot add a child (id = %d) of type %T to a server", id, e)
+	}
+}
+
+func (s *Server) deleteChild(id int64) {
+	delete(s.sockets, id)
+	delete(s.listenSockets, id)
+	s.deleteSelfIfReady()
+}
+
+func (s *Server) triggerDelete() {
+	s.closeCalled = true
+	s.deleteSelfIfReady()
+}
+
+func (s *Server) deleteSelfIfReady() {
+	if !s.closeCalled || len(s.sockets)+len(s.listenSockets) != 0 {
+		return
+	}
+	s.cm.deleteEntry(s.ID)
+}
+
+func (s *Server) getParentID() int64 {
+	return 0
+}