forked from hazelcast/hazelcast-go-client
/
lifecycle.go
93 lines (84 loc) · 2.86 KB
/
lifecycle.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
// Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
//
// 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.
package internal
import (
"sync"
"sync/atomic"
"github.com/hazelcast/hazelcast-go-client/core"
"github.com/hazelcast/hazelcast-go-client/core/logger"
"github.com/hazelcast/hazelcast-go-client/internal/util/iputil"
)
type lifecycleService struct {
client *HazelcastClient
isLive atomic.Value
listeners atomic.Value
mu sync.Mutex
logger logger.Logger
}
func newLifecycleService(client *HazelcastClient) *lifecycleService {
newLifecycle := &lifecycleService{client: client}
newLifecycle.logger = client.logger
newLifecycle.isLive.Store(true)
newLifecycle.listeners.Store(make(map[string]interface{})) //Initialize
for _, listener := range client.Config.LifecycleListeners() {
if _, ok := listener.(core.LifecycleListener); ok {
newLifecycle.AddLifecycleListener(listener)
}
}
newLifecycle.fireLifecycleEvent(core.LifecycleStateStarting)
return newLifecycle
}
func (ls *lifecycleService) AddLifecycleListener(listener interface{}) string {
registrationID, _ := iputil.NewUUID()
ls.mu.Lock()
defer ls.mu.Unlock()
listeners := ls.listeners.Load().(map[string]interface{})
copyListeners := make(map[string]interface{}, len(listeners)+1)
for k, v := range listeners {
copyListeners[k] = v
}
copyListeners[registrationID] = listener
ls.listeners.Store(copyListeners)
return registrationID
}
func (ls *lifecycleService) RemoveLifecycleListener(registrationID string) bool {
ls.mu.Lock()
defer ls.mu.Unlock()
listeners := ls.listeners.Load().(map[string]interface{})
copyListeners := make(map[string]interface{}, len(listeners)-1)
for k, v := range listeners {
copyListeners[k] = v
}
_, found := copyListeners[registrationID]
if found {
delete(copyListeners, registrationID)
}
ls.listeners.Store(copyListeners)
return found
}
func (ls *lifecycleService) fireLifecycleEvent(newState string) {
if newState == core.LifecycleStateShuttingDown {
ls.isLive.Store(false)
}
listeners := ls.listeners.Load().(map[string]interface{})
for _, listener := range listeners {
if _, ok := listener.(core.LifecycleListener); ok {
listener.(core.LifecycleListener).LifecycleStateChanged(newState)
}
}
ls.logger.Info("HazelcastClient", ClientVersion, "is", newState)
}
func (ls *lifecycleService) IsRunning() bool {
return ls.isLive.Load().(bool)
}