go.etcd.io/etcd@v3.3.27+incompatible/etcdserver/stats/stats.go (about)

     1  // Copyright 2015 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // Package stats defines a standard interface for etcd cluster statistics.
    16  package stats
    17  
    18  import "github.com/coreos/pkg/capnslog"
    19  
    20  var (
    21  	plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "etcdserver/stats")
    22  )
    23  
    24  type Stats interface {
    25  	// SelfStats returns the struct representing statistics of this server
    26  	SelfStats() []byte
    27  	// LeaderStats returns the statistics of all followers in the cluster
    28  	// if this server is leader. Otherwise, nil is returned.
    29  	LeaderStats() []byte
    30  	// StoreStats returns statistics of the store backing this EtcdServer
    31  	StoreStats() []byte
    32  }