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https://issues.apache.org/jira/browse/QPID-7824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16050675#comment-16050675
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Rob Godfrey commented on QPID-7824:
-----------------------------------
The Broker in the 6.x release is not really designed to be embedded. Even if
you fixed those lines there are likely other parts of the code where you will
eventually run up against the fact the Broker simply assumes it is using
logback as the logging provider.
On master (and thus in the forthcoming 7.0 release) the behaviour has already
changed so that you can embed the broker class (though you'll want to change
the default configuration so it doesn't try to instantiate the logback specific
support for viewing / configuring the logging).
> ClassCastException on Broker class line 147
> -------------------------------------------
>
> Key: QPID-7824
> URL: https://issues.apache.org/jira/browse/QPID-7824
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: qpid-java-6.1.1, qpid-java-6.1.2, qpid-java-6.1.3
> Environment: - Java 8
> - Scala 2.11.8
> Reporter: Gabriel Volpe
> Fix For: qpid-java-6.1.1, qpid-java-6.1.2, qpid-java-6.1.3
>
>
> Explicit class casting makes integration with other libraries impossible.
> I've been trying to get a workaround but it seems I cannot do anything. The
> problem is in the Qpid library. Specifically Broker class line #147. Here's
> the full stack trace:
> {code:java}
> [info] Exception encountered when attempting to run a suite with class name:
> com.github.gvolpe.fs2rabbit.Fs2RabbitSpec *** ABORTED ***
> [info] java.lang.ClassCastException: org.slf4j.helpers.SubstituteLogger
> cannot be cast to ch.qos.logback.classic.Logger
> [info] at org.apache.qpid.server.Broker$1.run(Broker.java:147)
> [info] at java.security.AccessController.doPrivileged(Native Method)
> [info] at javax.security.auth.Subject.doAs(Subject.java:422)
> [info] at org.apache.qpid.server.Broker.startup(Broker.java:142)
> [info] at
> com.github.gvolpe.fs2rabbit.embedded.EmbeddedAmqpBroker$.start(EmbeddedAmqpBroker.scala:16)
> [info] at
> com.github.gvolpe.fs2rabbit.Fs2RabbitSpec.beforeAll(Fs2RabbitSpec.scala:19)
> [info] at
> org.scalatest.BeforeAndAfterAll$class.beforeAll(BeforeAndAfterAll.scala:187)
> [info] at
> com.github.gvolpe.fs2rabbit.Fs2RabbitSpec.beforeAll(Fs2RabbitSpec.scala:14)
> [info] at
> org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:253)
> [info] at
> com.github.gvolpe.fs2rabbit.Fs2RabbitSpec.run(Fs2RabbitSpec.scala:14)
> {code}
> The simple solution would be to avoid the unnecessary casting. Now this is
> happening on line 147:
> {code:java}
> ch.qos.logback.classic.Logger logger =
> (ch.qos.logback.classic.Logger)
> LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
> {code}
> Simple fix:
> {code:java}
> org.slf4j.Logger logger = LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
> {code}
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