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https://github.com/minio/minio.git
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2aa18cafc6
With CoreDNS now supporting etcdv3 as the DNS backend, we can update our federation target to etcdv3. Users will now be able to use etcdv3 server as the federation backbone. Minio will update bucket data to etcdv3 and CoreDNS can pick that data up and serve it as bucket style DNS path.
73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
/*
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*
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* Copyright 2017 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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//go:generate ./regenerate.sh
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// Package health provides some utility functions to health-check a server. The implementation
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// is based on protobuf. Users need to write their own implementations if other IDLs are used.
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package health
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import (
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"sync"
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"golang.org/x/net/context"
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"google.golang.org/grpc/codes"
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healthpb "google.golang.org/grpc/health/grpc_health_v1"
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"google.golang.org/grpc/status"
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)
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// Server implements `service Health`.
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type Server struct {
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mu sync.Mutex
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// statusMap stores the serving status of the services this Server monitors.
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statusMap map[string]healthpb.HealthCheckResponse_ServingStatus
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}
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// NewServer returns a new Server.
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func NewServer() *Server {
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return &Server{
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statusMap: make(map[string]healthpb.HealthCheckResponse_ServingStatus),
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}
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}
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// Check implements `service Health`.
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func (s *Server) Check(ctx context.Context, in *healthpb.HealthCheckRequest) (*healthpb.HealthCheckResponse, error) {
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s.mu.Lock()
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defer s.mu.Unlock()
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if in.Service == "" {
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// check the server overall health status.
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return &healthpb.HealthCheckResponse{
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Status: healthpb.HealthCheckResponse_SERVING,
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}, nil
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}
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if status, ok := s.statusMap[in.Service]; ok {
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return &healthpb.HealthCheckResponse{
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Status: status,
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}, nil
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}
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return nil, status.Error(codes.NotFound, "unknown service")
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}
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// SetServingStatus is called when need to reset the serving status of a service
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// or insert a new service entry into the statusMap.
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func (s *Server) SetServingStatus(service string, status healthpb.HealthCheckResponse_ServingStatus) {
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s.mu.Lock()
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s.statusMap[service] = status
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s.mu.Unlock()
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}
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