1. 首先建立兩個 Verticle
- MainClusterVerticle.java
public class MainClusterVerticle extends AbstractVerticle {
@Override
public void start(Future<Void> startFuture) throws Exception {
vertx.eventBus().consumer("com.xiaoniu.bus", msg -> {
System.out.println("收到訊息");
System.out.println(msg != null ? ((JsonObject)msg.body()).encodePrettily() : "沒有訊息");
JsonObject j = new JsonObject();
j.put("info", "我是MainClusterVerticle");
msg.reply(j);
});
startFuture.complete();
}
}
複製程式碼- MainClusterVerticle2
public class MainClusterVerticle2 extends AbstractVerticle {
@Override
public void start(Future<Void> startFuture) throws Exception {
vertx.setPeriodic(3000, time -> {
System.out.println("時間到了，傳送訊息");
JsonObject json = new JsonObject().put("info", "我是另一個主機");
vertx.eventBus().send("com.xiaoniu.bus", json, msg -> {
if (msg.succeeded()) {
System.out.println(msg.result() != null
? ((JsonObject)msg.result().body()).encodePrettily()
: "沒有資訊");
} else {
System.err.println(msg.cause().getMessage());
msg.cause().printStackTrace();
}
});
});
startFuture.complete();
}
}
複製程式碼2. 建立 叢集配置檔案
- cluster.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--
~ Copyright (c) 2008-2016, 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.
-->
<!--
The default Hazelcast configuration. This is used when no hazelcast.xml is present.
Please see the schema for how to configure Hazelcast at https://hazelcast.com/schema/config/hazelcast-config-3.6.xsd
or the documentation at https://hazelcast.org/documentation/
-->
<hazelcast xsi:schemaLocation="http://www.hazelcast.com/schema/config hazelcast-config-3.6.xsd"
xmlns="http://www.hazelcast.com/schema/config"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<group>
<name>dev</name>
<password>dev-pass</password>
</group>
<management-center enabled="false">http://localhost:8080/mancenter</management-center>
<network>
<port auto-increment="true" port-count="100">5701</port> <!--監聽埠-->
<outbound-ports>
<!--
Allowed port range when connecting to other nodes.
0 or * means use system provided port.
-->
<ports>0</ports>
</outbound-ports>
<join>
<multicast enabled="false">
<multicast-group>224.2.2.3</multicast-group>
<multicast-port>54327</multicast-port>
</multicast>
<tcp-ip enabled="true">
<!--本機 IP地址， 另一臺機器需要重新編寫這份配置檔案，並修改這裡的IP地址-->
<interface>192.168.1.122</interface>
<member-list>
<!--叢集中所有的 IP地址， 包含本機-->
<member>192.168.1.122</member>
<member>192.168.1.130</member>
</member-list>
</tcp-ip>
<aws enabled="false">
<access-key>my-access-key</access-key>
<secret-key>my-secret-key</secret-key>
<!--optional, default is us-east-1 -->
<region>us-west-1</region>
<!--optional, default is ec2.amazonaws.com. If set, region shouldn't be set as it will override this property -->
<host-header>ec2.amazonaws.com</host-header>
<!-- optional, only instances belonging to this group will be discovered, default will try all running instances -->
<security-group-name>hazelcast-sg</security-group-name>
<tag-key>type</tag-key>
<tag-value>hz-nodes</tag-value>
</aws>
<discovery-strategies>
</discovery-strategies>
</join>
<interfaces enabled="false">
<interface>10.10.1.*</interface>
</interfaces>
<ssl enabled="false"/>
<socket-interceptor enabled="false"/>
<symmetric-encryption enabled="false">
<!--
encryption algorithm such as
DES/ECB/PKCS5Padding,
PBEWithMD5AndDES,
AES/CBC/PKCS5Padding,
Blowfish,
DESede
-->
<algorithm>PBEWithMD5AndDES</algorithm>
<!-- salt value to use when generating the secret key -->
<salt>thesalt</salt>
<!-- pass phrase to use when generating the secret key -->
<password>thepass</password>
<!-- iteration count to use when generating the secret key -->
<iteration-count>19</iteration-count>
</symmetric-encryption>
</network>
<partition-group enabled="false"/>
<executor-service name="default">
<pool-size>16</pool-size>
<!--Queue capacity. 0 means Integer.MAX_VALUE.-->
<queue-capacity>0</queue-capacity>
</executor-service>
<queue name="default">
<!--
Maximum size of the queue. When a JVM's local queue size reaches the maximum,
all put/offer operations will get blocked until the queue size
of the JVM goes down below the maximum.
Any integer between 0 and Integer.MAX_VALUE. 0 means
Integer.MAX_VALUE. Default is 0.
-->
<max-size>0</max-size>
<!--
Number of backups. If 1 is set as the backup-count for example,
then all entries of the map will be copied to another JVM for
fail-safety. 0 means no backup.
-->
<backup-count>1</backup-count>
<!--
Number of async backups. 0 means no backup.
-->
<async-backup-count>0</async-backup-count>
<empty-queue-ttl>-1</empty-queue-ttl>
</queue>
<map name="default">
<!--
Data type that will be used for storing recordMap.
Possible values:
BINARY (default): keys and values will be stored as binary data
OBJECT : values will be stored in their object forms
NATIVE : values will be stored in non-heap region of JVM
-->
<in-memory-format>BINARY</in-memory-format>
<!--
Number of backups. If 1 is set as the backup-count for example,
then all entries of the map will be copied to another JVM for
fail-safety. 0 means no backup.
-->
<backup-count>1</backup-count>
<!--
Number of async backups. 0 means no backup.
-->
<async-backup-count>0</async-backup-count>
<!--
Maximum number of seconds for each entry to stay in the map. Entries that are
older than <time-to-live-seconds> and not updated for <time-to-live-seconds>
will get automatically evicted from the map.
Any integer between 0 and Integer.MAX_VALUE. 0 means infinite. Default is 0.
-->
<time-to-live-seconds>0</time-to-live-seconds>
<!--
Maximum number of seconds for each entry to stay idle in the map. Entries that are
idle(not touched) for more than <max-idle-seconds> will get
automatically evicted from the map. Entry is touched if get, put or containsKey is called.
Any integer between 0 and Integer.MAX_VALUE. 0 means infinite. Default is 0.
-->
<max-idle-seconds>0</max-idle-seconds>
<!--
Valid values are:
NONE (no eviction),
LRU (Least Recently Used),
LFU (Least Frequently Used).
NONE is the default.
-->
<eviction-policy>NONE</eviction-policy>
<!--
Maximum size of the map. When max size is reached,
map is evicted based on the policy defined.
Any integer between 0 and Integer.MAX_VALUE. 0 means
Integer.MAX_VALUE. Default is 0.
-->
<max-size policy="PER_NODE">0</max-size>
<!--
When max. size is reached, specified percentage of
the map will be evicted. Any integer between 0 and 100.
If 25 is set for example, 25% of the entries will
get evicted.
-->
<eviction-percentage>25</eviction-percentage>
<!--
Minimum time in milliseconds which should pass before checking
if a partition of this map is evictable or not.
Default value is 100 millis.
-->
<min-eviction-check-millis>100</min-eviction-check-millis>
<!--
While recovering from split-brain (network partitioning),
map entries in the small cluster will merge into the bigger cluster
based on the policy set here. When an entry merge into the
cluster, there might an existing entry with the same key already.
Values of these entries might be different for that same key.
Which value should be set for the key? Conflict is resolved by
the policy set here. Default policy is PutIfAbsentMapMergePolicy
There are built-in merge policies such as
com.hazelcast.map.merge.PassThroughMergePolicy; entry will be overwritten if merging entry exists for the key.
com.hazelcast.map.merge.PutIfAbsentMapMergePolicy ; entry will be added if the merging entry doesn't exist in the cluster.
com.hazelcast.map.merge.HigherHitsMapMergePolicy ; entry with the higher hits wins.
com.hazelcast.map.merge.LatestUpdateMapMergePolicy ; entry with the latest update wins.
-->
<merge-policy>com.hazelcast.map.merge.PutIfAbsentMapMergePolicy</merge-policy>
<!--
Control caching of de-serialized values. Caching makes query evaluation faster, but it cost memory.
Possible Values:
NEVER: Never cache deserialized object
INDEX-ONLY: Caches values only when they are inserted into an index.
ALWAYS: Always cache deserialized values.
-->
<cache-deserialized-values>INDEX-ONLY</cache-deserialized-values>
</map>
<multimap name="default">
<backup-count>1</backup-count>
<value-collection-type>SET</value-collection-type>
</multimap>
<list name="default">
<backup-count>1</backup-count>
</list>
<set name="default">
<backup-count>1</backup-count>
</set>
<jobtracker name="default">
<max-thread-size>0</max-thread-size>
<!-- Queue size 0 means number of partitions * 2 -->
<queue-size>0</queue-size>
<retry-count>0</retry-count>
<chunk-size>1000</chunk-size>
<communicate-stats>true</communicate-stats>
<topology-changed-strategy>CANCEL_RUNNING_OPERATION</topology-changed-strategy>
</jobtracker>
<semaphore name="default">
<initial-permits>0</initial-permits>
<backup-count>1</backup-count>
<async-backup-count>0</async-backup-count>
</semaphore>
<reliable-topic name="default">
<read-batch-size>10</read-batch-size>
<topic-overload-policy>BLOCK</topic-overload-policy>
<statistics-enabled>true</statistics-enabled>
</reliable-topic>
<ringbuffer name="default">
<capacity>10000</capacity>
<backup-count>1</backup-count>
<async-backup-count>0</async-backup-count>
<time-to-live-seconds>30</time-to-live-seconds>
<in-memory-format>BINARY</in-memory-format>
</ringbuffer>
<serialization>
<portable-version>0</portable-version>
</serialization>
<services enable-defaults="true"/>
<lite-member enabled="false"/>
</hazelcast>
複製程式碼只有中文註釋的地方需要修改
3. pom.xml
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-core</artifactId>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-hazelcast</artifactId>
</dependency>
...
複製程式碼4. 啟動類
- 注意這裡，打兩個包，分別啟動 MainClusterVerticle 和 MainClusterVerticle2
- MainVerticle.java
public class MainVerticle extends AbstractVerticle{
public static void main(String[] args) throws FileNotFoundException {
System.out.println("main 方法");
final VertxOptions vertxOptions = new VertxOptions();
EventBusOptions eventBusOptions = new EventBusOptions();
eventBusOptions.setClustered(true);
// 本機Ip
vertxOptions.setEventBusOptions(eventBusOptions).setClusterHost("192.168.1.122");
// 配置檔案所在位置
Config config = new FileSystemXmlConfig("C:\\xiaoniu_doc\\micro-services-vertx\\vertxbus\\z\\cluster3.xml");
HazelcastClusterManager clusterManager = new HazelcastClusterManager();
clusterManager.setConfig(config);
vertxOptions.setClusterManager(clusterManager);
Vertx.clusteredVertx(vertxOptions, res -> {
res.result().deployVerticle(new MainClusterVerticle(), r -> {
if (r.succeeded()) {
System.out.println(MainClusterVerticle.class.getName() + " --> 部署成功");
} else {
r.cause().printStackTrace();
System.err.println(MainClusterVerticle.class.getName() + " --> 部署失敗, " + r.cause().getMessage());
}
});
});
}
}
複製程式碼5. 啟動命令
java -jar xxxxx.jar
複製程式碼6. 真實伺服器演示效果
我使用的是兩臺騰訊雲主機，使用的內網ip地址，如果只是自己演示，可以購買時長計費的配置，也就10塊錢。
感謝 Vert.x中國使用者組(515203212) 的 北京-Jack