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Posted to dev@qpid.apache.org by "Rajith Attapattu (JIRA)" <ji...@apache.org> on 2012/05/29 14:37:23 UTC
[jira] [Created] (QPID-4027) Provide a Java Qpid API implementation
over the C++ client
Rajith Attapattu created QPID-4027:
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Summary: Provide a Java Qpid API implementation over the C++ client
Key: QPID-4027
URL: https://issues.apache.org/jira/browse/QPID-4027
Project: Qpid
Issue Type: New Feature
Components: C++ Client, Java Client
Reporter: Rajith Attapattu
Assignee: Rajith Attapattu
Fix For: 0.17
QPID-4001 defines a java version of the Qpid API.
While a pure java implementation is required and would be the default, under certain circumstances jni over the C++ client maybe be useful.
Ex RDMA support
It is also a good opportunity to leverage the more performant and stable 0-10 client as an alternative to the current JMS client provided we complete QPID-4002
This also provides an opportunity for QPID-4002 to progress without having to wait for a pure java implementation.
A few minor changes to the C++ is required.
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[jira] [Updated] (QPID-4027) Provide a Java Qpid API implementation
over the C++ client
Posted by "Robbie Gemmell (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/QPID-4027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robbie Gemmell updated QPID-4027:
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Fix Version/s: (was: 0.17)
Removing released-version 0.17 fix-for.
> Provide a Java Qpid API implementation over the C++ client
> ----------------------------------------------------------
>
> Key: QPID-4027
> URL: https://issues.apache.org/jira/browse/QPID-4027
> Project: Qpid
> Issue Type: New Feature
> Components: C++ Client, Java Client
> Reporter: Rajith Attapattu
> Assignee: Rajith Attapattu
>
> QPID-4001 defines a java version of the Qpid API.
> While a pure java implementation is required and would be the default, under certain circumstances jni over the C++ client maybe be useful.
> Ex RDMA support
> It is also a good opportunity to leverage the more performant and stable 0-10 client as an alternative to the current JMS client provided we complete QPID-4002
> This also provides an opportunity for QPID-4002 to progress without having to wait for a pure java implementation.
> A few minor changes to the C++ is required.
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[jira] [Commented] (QPID-4027) Provide a Java Qpid API
implementation over the C++ client
Posted by "Rajith Attapattu (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/QPID-4027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13284782#comment-13284782 ]
Rajith Attapattu commented on QPID-4027:
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Rough design/implementation notes.
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1. Swig will be used for generating the wrapper/JNI code.
2. The biggest overhead would be in moving message data across the JNI boundary. To avoid extra copying both message headers and content are shared as raw bytes using direct byte buffers.
2.1 Message data/headers will be allocated direct on the java side which allows the C++ side to access the memory directly without any copying.
2.2 Message data/headers on the c++ side will be wrapped via a java.nio.ByteBuffer directly (using JNI) to avoid any copying.
3. The various implementations (pure java, jython, c++) will be loaded via the "qpid.connection-factory" jvm argument.
Ex -Dqpid.connection-factory=org.apache.qpid.messaging.cpp.CppConnectionFactory
4. In order for the bindings/implementations to work properly, failover/reconnection should be done at the Qpid API implementation layer and not the JMS layer as we now have. This allows us to leverage the implementations failover. Even in the current jms client, the jms failover interferes quite badly with the failover at the amqp layer causing deadlocks and other undesirable behaviour.
> Provide a Java Qpid API implementation over the C++ client
> ----------------------------------------------------------
>
> Key: QPID-4027
> URL: https://issues.apache.org/jira/browse/QPID-4027
> Project: Qpid
> Issue Type: New Feature
> Components: C++ Client, Java Client
> Reporter: Rajith Attapattu
> Assignee: Rajith Attapattu
> Fix For: 0.17
>
>
> QPID-4001 defines a java version of the Qpid API.
> While a pure java implementation is required and would be the default, under certain circumstances jni over the C++ client maybe be useful.
> Ex RDMA support
> It is also a good opportunity to leverage the more performant and stable 0-10 client as an alternative to the current JMS client provided we complete QPID-4002
> This also provides an opportunity for QPID-4002 to progress without having to wait for a pure java implementation.
> A few minor changes to the C++ is required.
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