I had created a message with a topic name and set some information with key/value pair and sent the message to the MessageBus (i.e, produced the message to an endPoint - in my case endpoint is a messageBus).
How can consume the message from that endPoint? I know the uri, endpoint. what configurations needs to be done for my consumer ( any camel XML changes to done ?).
Please help.
see the camel-jms page for details, but you basically need to do some basic Spring XML to configure the ActiveMQ connection and then establish your route...
from("activemq:queue:inboundQueue").bean(MyConsumerBean.class);
<bean id="activemq" class="org.apache.activemq.camel.component.ActiveMQComponent">
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="vm://localhost?broker.persistent=false&broker.useJmx=false"/>
</bean>
</property>
</bean>
see these unit test for more information...
https://svn.apache.org/repos/asf/camel/trunk/components/camel-jms/src/test/java/org/apache/camel/component/jms/JmsRouteTest.java
https://svn.apache.org/repos/asf/camel/trunk/components/camel-jms/src/test/resources/org/apache/camel/component/jms/jmsRouteUsingSpring.xml
Related
I have modified the admin console of ActiveMQ, i.e. the built-in Jetty, to use HTTPS instead of plain HTTP. However, two (albeit minor) issues remain:
I only managed to disable the HTTP port and enable the HTTPS port as suggested in the jetty.xml file:
<list>
<!--
Default: Enable this connector if you wish to use http with web console
->
<bean id="Connector" class="org.eclipse.jetty.server.ServerConnector">
<constructor-arg ref="Server" />
<!- see the jettyPort bean ->
<property name="host" value="#{systemProperties['jetty.host']}" />
<property name="port" value="#{systemProperties['jetty.port']}" />
</bean>
<!- -->
<!--
Enable this connector if you wish to use https with web console
-->
<bean id="SecureConnector" class="org.eclipse.jetty.server.ServerConnector">
<constructor-arg ref="Server" />
<constructor-arg>
<bean id="handlers" class="org.eclipse.jetty.util.ssl.SslContextFactory">
<property name="keyStorePath" value="${activemq.conf}/broker.ks" />
<property name="keyStorePassword" value="password" />
</bean>
</constructor-arg>
<property name="port" value="8162" />
</bean>
I would have preferred to leave the HTTP port active but use it to redirect HTTP calls to HTTPS. Can one do that and if so, how? I found no documentation describing this.
If one looks at the log at startup one gets a line
...
2022-11-23 17:56:04,836 | INFO | ActiveMQ WebConsole available at http://0.0.0.0:8162/ | org.apache.activemq.web.WebConsoleStarter | WrapperSimpleAppMain
2022-11-23 17:56:04,836 | INFO | ActiveMQ Jolokia REST API available at http://0.0.0.0:8162/api/jolokia/ | org.apache.activemq.web.WebConsoleStarter | WrapperSimpleAppMain
...
I.e. the URL displayed obviously picks up the correct port (8162 which I had changed from the default 8161 when switching to HTTPS) but displays the wrong protocol ("http") which is not correct. HTTP is not served any more, only HTTPS.
Can one tweak that as well so that the log also displays the correct protocol, i.e https://0.0.0.0:8162/....
Specify your (http connector) HttpConfiguration properly with regards to securePort and secureScheme.
Then add the SecureRedirectHandler somewhere early in your Jetty Handler tree.
I have a client app that is consuming from a queue in an activemq cluster. The app is running in tomcat 7 and uses camel (v2.10.3) and spring 3.1.2. I use a PooledConnectionFactory to connect.
Everything works for a while (sometimes days), but then all of the connections go away in the pool (the activemq broker web console shows no consumers. I figured it was the idletimeout issue, but adding the suggested config didn't help. I also upgraded to activemq-pool-5.10.0.jar, but also no luck.
SO, I'm trying to find out what is going on and was hoping to use JMX, but I can not find any related mbeans (via jconsole) that the pool registers. Is there a way to monitor/control the pool via JMX (or another/better way)?
My config fyi:
<bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMWSslConnectionFactory">
<property name="brokerURL" value="failover://ssl://...."/>
</bean>
<bean id="pooledConnectionFactory" class="org.apache.activemq.pool.PooledConnectionFactory" init-method="start" destroy-method="stop">
<property name="connectionFactory" ref="jmsConnectionFactory"/>
<property name="idleTimeout" value="0"/>
</bean>
As simple as it sounds, I don't see any other option other than to turn on TRACE level logging for that class. Check out the logs of this question.
In Fabric8, the preferred way to obtain an ActiveMQ connection is via the mq-fabric profile, which provides an ActitveMQConnection object via Declarative Services. An example of this is given on GitHub, which works just fine.
However, I've yet to find a way for Declarative Services and Blueprint Services to collaborate in Fabric8 (or any OSGI-environment, really), thus, my OSGI application must either use DS or blueprint. Mixing both doesn't seem to be an option.
If you want to use blueprint (which I do), you must first create a broker through the web UI, then go back to the console and type cluster-list, finding the port that Fabric8 assigned to the broker and then configure a connection in blueprint like so:
<bean id="activemqConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="tcp://mydomain:33056" />
<property name="userName" value="admin" />
<property name="password" value="admin" />
</bean>
While this does work, it's not exactly deployment-friendly, as it involves a few manual steps that I'd like to avoid if possible. The main issue is that I don't know what that port is going to be. I've combed through the config files and couldn't find it anywhere.
Is there a cleaner, more automated way to obtain an ActiveMQ connection in Fabric8 via blueprint, or must we use Declarative Services?
Stumbled across a solution to this issue in the fabric-camel-demo, which illustrates how to instantiate an ActiveMQConnectionFactory bean in Fabric8 via Blueprint.
<!-- use the fabric protocol in the brokerURL to connect to the ActiveMQ broker registered as default name -->
<!-- notice we could have used amq as the component name in Camel, and avoid any configuration at all,
as the amq component is provided out of the box when running in fabric -->
<bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="discovery:(fabric:default)"/>
<property name="userName" value="admin"/>
<property name="password" value="admin"/>
</bean>
Hope this helps!
I have a an activemq camel route that stops receiving messages at some point and requires a restart. I am not sure how to programmatically detect and fix this situation.
My route looks like so:
from("activemq:queue:Consumer.app.VirtualTopic.msg?messageConverter=#convertMsg")
It's all configured in Spring like so:
<!-- Configure the Message Bus Factory -->
<bean id="jmsFactory" class="com.local.messaging.activemq.SpringSslContextConnectionFactory">
<property name="brokerURL" value="${jms.broker.url}" />
<property name="sslContext" ref="sslContext" />
</bean>
<!-- Connect the Message Bus Factory to Camel. The 'activemq' bean
name is necessary for Camel to pick it up automatically -->
<bean id="activemq" class="org.apache.activemq.camel.component.ActiveMQComponent" depends-on="jmsFactory">
<property name="usePooledConnection" value="true" />
<property name="connectionFactory">
<bean class="org.apache.activemq.pool.PooledConnectionFactory">
<property name="maxConnections" value="20" />
<property name="maximumActive" value="10" />
<property name="connectionFactory" ref="jmsFactory" />
</bean>
</property>
</bean>
Finally, the broker URL is configured like so:
jms.broker.url=failover://(ssl://amq1:61616,ssl://amq1:61616)
This starts up just fine and works like a champ most of the time. Every so often, though, I see this message in the logs:
Received a message on a connection which is not yet started. Have you forgotten to call Connection.start()? Connection: ActiveMQConnection {<details>}
I suspect strongly that this happens after the message bus has restarted, but as I have no direct access to the message bus, I don't know that for certain. I don't know that that matters.
The keys for me are:
How do I programmatically detect this situation? There doesn't appear to be any exception thrown or the like and the only way I've seen this is by parsing through log files.
After detecting it, how do I fix it? Do I need to start() and stop() the route or is there a cleaner way?
Finally, I did see some suggestions that this case should be handled by activemq, using the failover scheme. As shown above, I am using failover and this still happens.
Hello has anyone ever used Camel with IBM's MQ. We are looking at possibly using the two products together but have no example of the two products working together.
I have extensive use of IBM MQ's with camel. There is no issue using both together. I will paste a sample configuration from one of my spring context files leveraging a camel Jms Endpoint, A spring connection factory, and an IBM MQ definition.
Camel Route
from("someplace")
.to("cpaibmmq:queue:myQueueName");
Spring Context
<bean name="cpaibmmq" class="org.apache.camel.component.jms.JmsComponent" destroy-method="doStop">
<property name="transacted" value="${jms.transacted}" />
<property name="concurrentConsumers" value="${cpa.concurrentConsumers}" />
<property name="maxConcurrentConsumers" value="${cpa.concurrentConsumers}" />
<property name="acceptMessagesWhileStopping" value="${jms.acceptMessagesWhileStopping}" />
<property name="acknowledgementModeName" value="${jms.acknowledgementModeName}" />
<property name="cacheLevelName" value="${jms.cacheLevelName}" />
<property name="connectionFactory" ref="ibmFac1" />
<property name="exceptionListener" ref="ibmFac1" />
</bean>
<bean id="ibmFac1" class="org.springframework.jms.connection.SingleConnectionFactory" destroy-method="destroy">
<constructor-arg>
<bean class="com.ibm.mq.jms.MQQueueConnectionFactory">
<property name="transportType" value="1" />
<property name="channel" value="${cpa.wmq.channel}" />
<property name="hostName" value="${cpa.wmq.hostname}" />
<property name="port" value="${cpa.wmq.port}" />
<property name="queueManager" value="${cpa.wmq.mqmanager}" />
</bean>
</constructor-arg>
</bean>
The best I have been able to get is documented below, illustrated as a Spring XML application context that itself hosts the CAMEL context and routes. This sample works with the IBM native MQ JCA-compliant resource adapter v7.5, CAMEL 2.16, Spring core 4.2. I have deployed it in Glassfish, Weblogic, and JBoss EAP7 servers.
The complexity is bound to handling the flow of MQ reports whose philosophy conflicts with that of a plain JMS reply-to message. For a detailed explanation, please refer to Implementing native websphere MQ with CoD over Camel JMS component
This example based on the CAMEL XML DSL is self-contained and easy to test.
We start with Spring & CAMEL declarations:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:camel="http://camel.apache.org/schema/spring"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd">
The CAMEL context follows with 2 routes: MQ to JMS and JMS to MQ, here chained to form a bridge to ease testing.
<camel:camelContext id="mqBridgeCtxt">
<camel:route id="mq2jms" autoStartup="true">
Weird: on Weblogic, the only way to get (e.g.) 3 listeners is to enforce 3 connections (with 3 Camel:from statements in sequence) with max 1 session each, otherwise an MQ error ensues: MQJCA1018: Only one session per connection is allowed. On JBoss, you can simply adjust concurrentConsumers=...
<camel:from uri="wmq:queue:TEST.Q1?concurrentConsumers=1&disableReplyTo=true&
acknowledgementModeName=SESSION_TRANSACTED"/>
The disable disableReplyTo option above ensures that CAMEL will not produce a reply before we can test the MQ message type to be 1=Request(-reply) or 8=datagram (one way!). That test and reply construction is not illustrated here.
Then we enforce the EIP to InOnly on the next posting to plain JMS to be consistent with the Inbound MQ mode.
<camel:setExchangePattern pattern="InOnly"/>
<!-- camel:process ref="reference to your MQ message processing bean fits here" / -->
<camel:to uri="ref:innerQueue" />
</camel:route>
This ends the MQ-to-jms route; next comes the jms-to-MQ route still in the same CAMEL context:
<camel:route id="jms2mq" autoStartup="true">
<camel:from uri="ref:innerQueue" />
<!-- remove inner message headers and properties to test without inbound side effects! -->
<camel:removeHeaders pattern="*"/>
<camel:removeProperties pattern="*" />
<!-- camel:process ref="reference to your MQ message preparation bean fits here" / -->
Now comes the request flag for the MQ CoD report to be returned by remote destination. We also enforce the MQ message to be of Datagram type (value 8).
<camel:setHeader headerName="JMS_IBM_Report_COD"><camel:simple resultType="java.lang.Integer">2048</camel:simple></camel:setHeader>
<camel:setHeader headerName="JMS_IBM_Report_Pass_Correl_ID"><camel:simple resultType="java.lang.Integer">64</camel:simple></camel:setHeader>
<camel:setHeader headerName="JMS_IBM_MsgType"><camel:simple resultType="java.lang.Integer">8</camel:simple></camel:setHeader>
The ReplyTo queue can be specified either via the ReplyTo uri option, else as a header as below.
Next we do use CamelJmsDestinationName header to enforce suppressing of the JMS MQ message header MQRFH2 (using targetClient MQ URL option value 1). In other words, we want to send a plain vanilla MQ binary message (i.e. Only the MQMD message descriptor followed by the payload).
<camel:setHeader headerName="JMSReplyTo"><camel:constant>TEST.REPLYTOQ</camel:constant></camel:setHeader>
<camel:setHeader headerName="CamelJmsDestinationName"> <camel:constant>queue://MYQMGR/TEST.Q2?targetClient=1</camel:constant></camel:setHeader>
More MQMD fields may be controlled through reserved JMS properties as illustrated below. See restrictions in IBM doc.
<camel:setHeader headerName="JMS_IBM_Format"><camel:constant>MQSTR </camel:constant></camel:setHeader>
<camel:setHeader headerName="JMSCorrelationID"><camel:constant>_PLACEHOLDER_24_CHARS_ID_</camel:constant></camel:setHeader>
The destination queue in the URI is overwritten by the CamelJmsDestinationName above, hence the queue name in the URI becomes a placeholder.
The URI option preserveMessageQos is the one that - as observed - allows sending a message with the ReplyTo data being set (to get the MQ CoD Report), yet prevent CAMEL to instantiate a Reply message listener by enforcing the InOnly MEP.
<camel:to uri="wmq:queue:PLACEHOLDER.Q.NAME?concurrentConsumers=1&
exchangePattern=InOnly&preserveMessageQos=true&
includeSentJMSMessageID=true" />
</camel:route>
</camel:camelContext>
We have not finished, we have still to declare our queue factories for both a native JMS provider and Websphere MQ (via the native IBM WMQ JCA Resource Adapter), to be adjusted to your context.
We use here JNDI lookups on administrative objects.
<camel:endpoint id="innerQueue" uri="jmsloc:queue:transitQueue">
</camel:endpoint>
<jee:jndi-lookup id="mqQCFBean" jndi-name="jms/MYQMGR_QCF"/>
<jee:jndi-lookup id="jmsraQCFBean" jndi-name="jms/jmsra_QCF"/>
<bean id="jmsloc" class="org.apache.camel.component.jms.JmsComponent">
<property name="connectionFactory" ref="jmsraQCFBean" />
</bean>
<bean id="wmq" class="org.apache.camel.component.jms.JmsComponent">
<property name="connectionFactory" ref="mqQCFBean" />
</bean>
</beans>
An alternative to fetching the factories (and JCA adapters) from JNDI is to declare the JMS client as Spring beans. In Weblogic and Glassfish, you'll be better inspired by deploying the native IBM JCA resource adapter and creating JNDI resources then referenced in the Spring Context as above, in JBoss a direct MQ client bean declaration suits best as below)
<bean id="mqCFBean" class="com.ibm.mq.jms.MQXAConnectionFactory">
<property name="hostName" value="${mqHost}"/>
<property name="port" value="${mqPort}"/>
<property name="queueManager" value="${mqQueueManager}"/>
<property name="channel" value="${mqChannel}"/>
<property name="transportType" value="1"/> <!-- This parameter is fixed and compulsory to work with pure MQI java libraries -->
<property name="appName" value="${connectionName}"/>
</bean>
<bean id="wmq" class="org.apache.camel.component.jms.JmsComponent">
<property name="connectionFactory" ref="mqCFBean"/>
<property name="transacted" value="true"/>
<property name="acknowledgementModeName" value="AUTO_ACKNOWLEDGE"/>
</bean>
Comments and improvements welcome.
A quick google revealed following,
http://lowry-techie.blogspot.de/2010/11/camel-integration-with-websphere-mq.html
HTH