k8s.io/apiserver@v0.31.1/pkg/storage/etcd3/healthcheck.go (about)

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package etcd3
    18  
    19  import (
    20  	"encoding/json"
    21  	"fmt"
    22  )
    23  
    24  // etcdHealth encodes data returned from etcd /healthz handler.
    25  type etcdHealth struct {
    26  	// Note this has to be public so the json library can modify it.
    27  	Health string `json:"health"`
    28  }
    29  
    30  // EtcdHealthCheck decodes data returned from etcd /healthz handler.
    31  // Deprecated: Validate health by passing storagebackend.Config directly to storagefactory.CreateProber.
    32  func EtcdHealthCheck(data []byte) error {
    33  	obj := etcdHealth{}
    34  	if err := json.Unmarshal(data, &obj); err != nil {
    35  		return err
    36  	}
    37  	if obj.Health != "true" {
    38  		return fmt.Errorf("Unhealthy status: %s", obj.Health)
    39  	}
    40  	return nil
    41  }