[英]Mule-Flow: Checking Required Properties
I have a mule flow with an amqp inbound and outbound endpoint, here is a simplified example: 我有一个带有amqp入站和出站端点的m子流,这是一个简化的示例:
<flow name="foobar">
<inbound-endpoint ref="amqp_inbound" />
<transformer ref="some_xsl_transformer" />
<outbound-endpoint ref="amqp_outbound"/>
</flow>
The amqp configuration is like so: amqp配置如下所示:
<amqp:endpoint name="amqp_inbound" queueName="${inbound.q.name}" connector-ref="amqpConnector" exchange-pattern="one-way" />
<amqp:connector
name="amqpConnector"
host="${q.host}"
port="${q.port}"
username="${q.username}"
password="${q.password}"
prefetchCount="${q.prefetchcount}"
ackMode="MANUAL" />
What I would like to do is check the existence of the required properties when the application is deployed. 我想做的是在部署应用程序时检查所需属性的存在。 If they are not present I would like to provide an error message with the missing required properties and gracefully shut down.
如果它们不存在,我想提供一条错误消息,其中缺少必需的属性,并正常关闭。 With regular spring beans I have been implementing IntializingBean and checking required properties in the InitializingBean#afterPropertiesSet() method.
使用常规的Spring bean,我一直在实现IntializingBean并在InitializingBean#afterPropertiesSet()方法中检查所需的属性。
I would like to do something similar for properties that are referenced only by the mule flow, how is it possible? 我想对仅由m子流引用的属性执行类似的操作,这怎么可能? ie if ${q.username} is missing, do not deploy the application and throw an error message.
例如,如果缺少$ {q.username},请不要部署应用程序并抛出错误消息。 Does mule allow such a thing?
m子允许这样的事情吗?
In that case, use: 在这种情况下,请使用:
<context:property-placeholder
location="classpath:config.properties"
ignore-unresolvable="false" />
to load your properties, as Spring will throw an exception thus will prevent the application from loading. 加载您的属性,因为Spring会抛出异常,从而阻止应用程序加载。
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