208.4. 例
クラスター化された Camel アプリケーションを保護することで、1 つのアクティブなノードからのみファイルを消費できます。
// the file endpoint we want to consume from
String url = "file:target/inbox?delete=true";
// use the camel master component in the clustered group named myGroup
// to run a master/slave mode in the following Camel url
from("master:myGroup:" + url)
.log(name + " - Received file: ${file:name}")
.delay(delay)
.log(name + " - Done file: ${file:name}")
.to("file:target/outbox");マスターコンポーネントは、以下を使用して設定できる CamelClusterService を活用します。
Java
ZooKeeperClusterService service = new ZooKeeperClusterService(); service.setId("camel-node-1"); service.setNodes("myzk:2181"); service.setBasePath("/camel/cluster"); context.addService(service)XML(Spring/Blueprint)
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd"> <bean id="cluster" class="org.apache.camel.component.zookeeper.cluster.ZooKeeperClusterService"> <property name="id" value="camel-node-1"/> <property name="basePath" value="/camel/cluster"/> <property name="nodes" value="myzk:2181"/> </bean> <camelContext xmlns="http://camel.apache.org/schema/spring" autoStartup="false"> ... </camelContext> </beans>Spring Boot
camel.component.zookeeper.cluster.service.enabled = true camel.component.zookeeper.cluster.service.id = camel-node-1 camel.component.zookeeper.cluster.service.base-path = /camel/cluster camel.component.zookeeper.cluster.service.nodes = myzk:2181
