69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
// Copyright 2023 The etcd 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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package v3rpc
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import (
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"go.uber.org/zap"
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"google.golang.org/grpc/health"
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healthpb "google.golang.org/grpc/health/grpc_health_v1"
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)
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const (
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allGRPCServices = ""
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)
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type HealthNotifier interface {
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StartServe()
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StopServe(reason string)
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}
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func NewHealthNotifier(hs *health.Server, lg *zap.Logger) HealthNotifier {
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if hs == nil {
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panic("unexpected nil gRPC health server")
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}
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if lg == nil {
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lg = zap.NewNop()
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}
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hc := &healthChecker{hs: hs, lg: lg}
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// set grpc health server as serving status blindly since
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// the grpc server will serve iff s.ReadyNotify() is closed.
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hc.StartServe()
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return hc
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}
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type healthChecker struct {
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hs *health.Server
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lg *zap.Logger
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}
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func (hc *healthChecker) StartServe() {
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hc.lg.Info(
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"grpc service status changed",
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zap.String("service", allGRPCServices),
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zap.String("status", healthpb.HealthCheckResponse_SERVING.String()),
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)
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hc.hs.SetServingStatus(allGRPCServices, healthpb.HealthCheckResponse_SERVING)
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}
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func (hc *healthChecker) StopServe(reason string) {
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hc.lg.Warn(
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"grpc service status changed",
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zap.String("service", allGRPCServices),
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zap.String("status", healthpb.HealthCheckResponse_NOT_SERVING.String()),
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zap.String("reason", reason),
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)
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hc.hs.SetServingStatus(allGRPCServices, healthpb.HealthCheckResponse_NOT_SERVING)
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}
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