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reliabletopic_example.go
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reliabletopic_example.go
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// Copyright (c) 2008-2018, 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 main
import (
"fmt"
"strconv"
"sync"
"github.com/ahmetmircik/hazelcast-go-client"
"github.com/ahmetmircik/hazelcast-go-client/core"
)
func main() {
config := hazelcast.NewConfig()
config.NetworkConfig().AddAddress("127.0.0.1:5701")
client, err := hazelcast.NewClientWithConfig(config)
if err != nil {
fmt.Println(err)
return
}
reliableTopic, _ := client.GetReliableTopic("myReliableTopic")
var wg sync.WaitGroup
wg.Add(10)
reliableTopic.AddMessageListener(&reliableTopicMessageListener{wg: &wg})
go func() {
for i := 0; i < 10; i++ {
reliableTopic.Publish("Message " + strconv.Itoa(i))
}
}()
wg.Wait()
reliableTopic.Destroy()
client.Shutdown()
}
type reliableTopicMessageListener struct {
wg *sync.WaitGroup
}
func (r *reliableTopicMessageListener) OnMessage(message core.Message) error {
fmt.Println("Got message: ", message.MessageObject())
fmt.Println("Publishing Time: ", message.PublishTime())
r.wg.Done()
return nil
}
func (r *reliableTopicMessageListener) RetrieveInitialSequence() int64 {
return -1
}
func (r *reliableTopicMessageListener) StoreSequence(sequence int64) {
}
func (r *reliableTopicMessageListener) IsLossTolerant() bool {
return true
}
func (r *reliableTopicMessageListener) IsTerminal(err error) (bool, error) {
return true, nil
}