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From "Arthur Naseef (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3166) client calls to createProducer() and send() successful even though BrokerFilter methods throw exceptions
Date Mon, 03 Mar 2014 19:18:21 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13918453#comment-13918453
] 

Arthur Naseef commented on AMQ-3166:
------------------------------------

If transacted-sends were always sent Synchronously from the client to the broker, this problem
would go away as the clients would immediately receive the exception on the send.  In that
case, I wouldn't bother with marking the transaction as failed since (a) there's really no
need, and (b) the client could easily decide to go forward and commit in spite of the single
send failure (i.e. more complex transacted use-cases would be supported).

My only concern with making that change is the potential impact to performance.  I'll give
it a try and see how much impact it has.

> client calls to createProducer() and send() successful even though BrokerFilter methods
throw exceptions
> --------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-3166
>                 URL: https://issues.apache.org/jira/browse/AMQ-3166
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, JMS client
>    Affects Versions: 5.4.2, 5.5.0
>            Reporter: Arthur Naseef
>            Assignee: Arthur Naseef
>         Attachments: AMQ3166Test.java, AMQ3166Test.java, FailedTransactionTracking.java,
FailedTransactionTrackingPlugin.java
>
>
> Client calls to createProducer() always return without an error even though a BrokerFilter's
addProducer() method throws an exception on the request. In contrast, createConsumer() throws
an exception, as expected, when BrokerFilter's addConsumer() throws an exception.
> Clients using transacted sessions always return successfully from send() when a BrokerFilter's
send() method throws an exception.
> Below is a broker configuration file using <authorizationPlugin> to illustrate
the problem.
> To reproduce the problem With this configuration, a test client only needs to connect
with user = "user" and password = "password", and then attempt to produce messages with a
transacted session to any queue other than ABC (e.g. DEF).
> Tracing the cause of the issue has lead to finding that the client code for creating
a producer uses an Async send for the producer information.  The analogous code for consumers
uses a Sync send.
> I will work on a patch.  It would be very helpful to have feedback on the operation of
the bus and the best way to resolve this problem.  Based on my research, it seems that createProducer()
should be using a Sync send in place of the Async one.  Not yet sure about send().  Another
possibility is to move the security operations to earlier in the internal broker flow.
> === SAMPLE BROKER XML ===
> <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-2.0.xsd
>   http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd">
>     <broker xmlns="http://activemq.apache.org/schema/core"
>             brokerName="localhost"
>             dataDirectory="${activemq.base}/data"
>             destroyApplicationContextOnStop="true" >
>         <persistenceAdapter>
>             <kahaDB directory="${activemq.base}/data/kahadb"/>
>         </persistenceAdapter>
>         
>         <plugins>
>           <simpleAuthenticationPlugin anonymousAccessAllowed="true">
>               <users>
>                   <authenticationUser username="user" password="password"
>                       groups="users"/>
>               </users>
>           </simpleAuthenticationPlugin>
>           <authorizationPlugin>
>               <map>
>                   <authorizationMap>
>                     <authorizationEntries>
>                       <authorizationEntry queue="ABC" read="users" write="users" admin="users"
/>
>                       <authorizationEntry topic="ActiveMQ.Advisory.>" read="users"
write="users" admin="users" />
>                     </authorizationEntries>
>                   </authorizationMap>
>               </map>
>           </authorizationPlugin>
>         </plugins>
>         <transportConnectors>
>             <transportConnector name="openwire" uri="tcp://0.0.0.0:61616"/>
>         </transportConnectors>
>     </broker>
> </beans>



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