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cluster_info.go
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cluster_info.go
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// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package model
import (
"encoding/json"
"io"
"strings"
"sync"
"sync/atomic"
)
type ClusterInfo struct {
Id string `json:"id"`
Version string `json:"version"`
ConfigHash string `json:"config_hash"`
InterNodeUrl string `json:"internode_url"`
Hostname string `json:"hostname"`
LastSuccessfulPing int64 `json:"last_ping"`
Alive int32 `json:"is_alive"`
Mutex sync.RWMutex `json:"-"`
}
func (me *ClusterInfo) ToJson() string {
me.Mutex.RLock()
defer me.Mutex.RUnlock()
b, err := json.Marshal(me)
if err != nil {
return ""
} else {
return string(b)
}
}
func (me *ClusterInfo) Copy() *ClusterInfo {
json := me.ToJson()
return ClusterInfoFromJson(strings.NewReader(json))
}
func ClusterInfoFromJson(data io.Reader) *ClusterInfo {
decoder := json.NewDecoder(data)
var me ClusterInfo
me.Mutex = sync.RWMutex{}
err := decoder.Decode(&me)
if err == nil {
return &me
} else {
return nil
}
}
func (me *ClusterInfo) SetAlive(alive bool) {
if alive {
atomic.StoreInt32(&me.Alive, 1)
} else {
atomic.StoreInt32(&me.Alive, 0)
}
}
func (me *ClusterInfo) IsAlive() bool {
return atomic.LoadInt32(&me.Alive) == 1
}
func (me *ClusterInfo) HaveEstablishedInitialContact() bool {
me.Mutex.RLock()
defer me.Mutex.RUnlock()
if me.Id != "" {
return true
}
return false
}
func (me *ClusterInfo) IdEqualTo(in string) bool {
me.Mutex.RLock()
defer me.Mutex.RUnlock()
if me.Id == in {
return true
}
return false
}
func ClusterInfosToJson(objmap []*ClusterInfo) string {
if b, err := json.Marshal(objmap); err != nil {
return ""
} else {
return string(b)
}
}
func ClusterInfosFromJson(data io.Reader) []*ClusterInfo {
decoder := json.NewDecoder(data)
var objmap []*ClusterInfo
if err := decoder.Decode(&objmap); err != nil {
return make([]*ClusterInfo, 0)
} else {
return objmap
}
}