mirror of https://github.com/minio/minio.git
73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
|
/*
|
||
|
|
*
|
||
|
|
* Copyright 2017 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.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
//go:generate ./regenerate.sh
|
||
|
|
|
||
|
|
// Package health provides some utility functions to health-check a server. The implementation
|
||
|
|
// is based on protobuf. Users need to write their own implementations if other IDLs are used.
|
||
|
|
package health
|
||
|
|
|
||
|
|
import (
|
||
|
|
"sync"
|
||
|
|
|
||
|
|
"golang.org/x/net/context"
|
||
|
|
"google.golang.org/grpc/codes"
|
||
|
|
healthpb "google.golang.org/grpc/health/grpc_health_v1"
|
||
|
|
"google.golang.org/grpc/status"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Server implements `service Health`.
|
||
|
|
type Server struct {
|
||
|
|
mu sync.Mutex
|
||
|
|
// statusMap stores the serving status of the services this Server monitors.
|
||
|
|
statusMap map[string]healthpb.HealthCheckResponse_ServingStatus
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewServer returns a new Server.
|
||
|
|
func NewServer() *Server {
|
||
|
|
return &Server{
|
||
|
|
statusMap: make(map[string]healthpb.HealthCheckResponse_ServingStatus),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check implements `service Health`.
|
||
|
|
func (s *Server) Check(ctx context.Context, in *healthpb.HealthCheckRequest) (*healthpb.HealthCheckResponse, error) {
|
||
|
|
s.mu.Lock()
|
||
|
|
defer s.mu.Unlock()
|
||
|
|
if in.Service == "" {
|
||
|
|
// check the server overall health status.
|
||
|
|
return &healthpb.HealthCheckResponse{
|
||
|
|
Status: healthpb.HealthCheckResponse_SERVING,
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
if status, ok := s.statusMap[in.Service]; ok {
|
||
|
|
return &healthpb.HealthCheckResponse{
|
||
|
|
Status: status,
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
return nil, status.Error(codes.NotFound, "unknown service")
|
||
|
|
}
|
||
|
|
|
||
|
|
// SetServingStatus is called when need to reset the serving status of a service
|
||
|
|
// or insert a new service entry into the statusMap.
|
||
|
|
func (s *Server) SetServingStatus(service string, status healthpb.HealthCheckResponse_ServingStatus) {
|
||
|
|
s.mu.Lock()
|
||
|
|
s.statusMap[service] = status
|
||
|
|
s.mu.Unlock()
|
||
|
|
}
|