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Posted to users@activemq.apache.org by pratibhaG <pr...@in2m.com> on 2008/11/12 08:25:11 UTC

Problem when using brokerName attribute

Hi,
I am using activemq inside servicemix.

In my activemq.xml I have following configuration.

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns:amq="http://activemq.org/config/1.0">
  
  
  <amq:broker id="broker" depends-on="jmxServer" useShutdownHook="false">

    
    <amq:managementContext>
      <bean class="org.apache.activemq.broker.jmx.ManagementContext">
        <property name="createConnector" value="false" />
      </bean>
    </amq:managementContext>

   
    <amq:persistenceAdapter>
      
      <amq:jdbcPersistenceAdapter dataSource="#activemq-ds"/>	
	
    </amq:persistenceAdapter>
  
    <amq:transportConnectors>
       
       <amq:transportConnector uri="tcp://localhost:61616"
discoveryUri="multicast://default"/>
    </amq:transportConnectors>
    
    <amq:networkConnectors>
      
    </amq:networkConnectors>
    
	<amq:destinations>
      <amq:queue physicalName="resolved.error.queue" />
    </amq:destinations> 
  </amq:broker>
  
   <bean id="activemq-ds" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
    <property name="driverClassName" value="${driverClassName}"/>
    <property name="url" value="${jdbcURL}"/>
    <property name="username" value="${username}"/>
    <property name="password" value="${password}"/>
    <property name="poolPreparedStatements"
value="${poolPreparedStatements}"/>
  </bean>	 

</beans>


when I changed the line
 <amq:broker id="broker" depends-on="jmxServer" useShutdownHook="false">
 to 
 <amq:broker id="broker" brokerName= "myBroker" depends-on="jmxServer"
useShutdownHook="false">

I have just added a new attribute brokerName

I see the strange behavior:

This is what happens when I don't use the brokerName= "myBroker" attribute.:
 Servicemix keeps all the data in its data directory. When I delete data
directory I lose every data that I had. So after deleting data directory my
servicemix would be fresh to create new data on startup.

This is what happens when I use the brokerName= "myBroker" attribute.:
Servicemix keeps all the data in its data directory. When I delete data
directory some data is persisting. So after deleting data directory my
servicemix would not be fresh it still gets some of the data that I had
earlier.

Why is it so?
What the attribute brokerName do? When to use it and when not? Is it
responsible for data persistent?

-----Pratibha


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Re: Problem when using brokerName attribute

Posted by Dejan Bosanac <de...@ttmsolutions.com>.

It shouldn't do anything special to your broker ...

You can also try setting dataDirectory to the <amq:broker> element.

Anyhow, since you are using relational database for the storage, are you
sure you're starting your broker with a clean database (in case you are
not using Derby)?

If you are using Derby, databaseName property is actually a folder name
where the database is created.

Cheers

-- 
Dejan Bosanac

http://www.ttmsolutions.com - get a free ActiveMQ user guide

ActiveMQ in Action - http://www.manning.com/snyder/
Scripting in Java - http://www.scriptinginjava.net

pratibhaG wrote:
> It did not solve the problem.
>
> I am just wondered about the magic brokerName does. 
>
> I want to know what happens when we set this attribute. 
>
> Please provide me some documentation.
>

Re: Problem when using brokerName attribute

Posted by pratibhaG <pr...@in2m.com>.

It did not solve the problem.

I am just wonder about the magic brokerName does. 

I want to know what happens when we set this attribute. 

Please provide me some documentation.
-- 
View this message in context: http://www.nabble.com/Problem-when-using-brokerName-attribute-tp20455380p20456419.html
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Re: Problem when using brokerName attribute

Posted by Dejan Bosanac <de...@ttmsolutions.com>.

Hi,

try controlling your data directory explicitly with the dataDirectory
parameter. For example:

 <journaledJDBC dataDirectory="../activemq-data" dataSource="#activemq-ds"/>

Cheers

-- 
Dejan Bosanac


http://www.ttmsolutions.com - get a free ActiveMQ user guide

ActiveMQ in Action - http://www.manning.com/snyder/
Scripting in Java - http://www.scriptinginjava.net



pratibhaG wrote:
> Hi,
> I am using activemq inside servicemix.
>
> In my activemq.xml I have following configuration.
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <beans xmlns:amq="http://activemq.org/config/1.0">
>   
>   
>   <amq:broker id="broker" depends-on="jmxServer" useShutdownHook="false">
>
>     
>     <amq:managementContext>
>       <bean class="org.apache.activemq.broker.jmx.ManagementContext">
>         <property name="createConnector" value="false" />
>       </bean>
>     </amq:managementContext>
>
>    
>     <amq:persistenceAdapter>
>       
>       <amq:jdbcPersistenceAdapter dataSource="#activemq-ds"/>	
> 	
>     </amq:persistenceAdapter>
>   
>     <amq:transportConnectors>
>        
>        <amq:transportConnector uri="tcp://localhost:61616"
> discoveryUri="multicast://default"/>
>     </amq:transportConnectors>
>     
>     <amq:networkConnectors>
>       
>     </amq:networkConnectors>
>     
> 	<amq:destinations>
>       <amq:queue physicalName="resolved.error.queue" />
>     </amq:destinations> 
>   </amq:broker>
>   
>    <bean id="activemq-ds" class="org.apache.commons.dbcp.BasicDataSource"
> destroy-method="close">
>     <property name="driverClassName" value="${driverClassName}"/>
>     <property name="url" value="${jdbcURL}"/>
>     <property name="username" value="${username}"/>
>     <property name="password" value="${password}"/>
>     <property name="poolPreparedStatements"
> value="${poolPreparedStatements}"/>
>   </bean>	 
>
> </beans>
>
>
> when I changed the line
>  <amq:broker id="broker" depends-on="jmxServer" useShutdownHook="false">
>  to 
>  <amq:broker id="broker" brokerName= "myBroker" depends-on="jmxServer"
> useShutdownHook="false">
>
> I have just added a new attribute brokerName
>
> I see the strange behavior:
>
> This is what happens when I don't use the brokerName= "myBroker" attribute.:
>  Servicemix keeps all the data in its data directory. When I delete data
> directory I lose every data that I had. So after deleting data directory my
> servicemix would be fresh to create new data on startup.
>
> This is what happens when I use the brokerName= "myBroker" attribute.:
> Servicemix keeps all the data in its data directory. When I delete data
> directory some data is persisting. So after deleting data directory my
> servicemix would not be fresh it still gets some of the data that I had
> earlier.
>
> Why is it so?
> What the attribute brokerName do? When to use it and when not? Is it
> responsible for data persistent?
>
> -----Pratibha
>
>
>