6177d32774
In LargeMessageImpl.copy(long) it need to open the underlying file in order to read and copy bytes into the new copied message. However there is a chance that another thread can come in and close the file in the middle, making the copy failed with "channel is null" error. This is happening in cases where a large message is sent to a jms topic (multicast address). During delivery it to multiple subscribers, some consumer is doing delivery and closed the underlying file after. Some other consumer is rolling back the messages and eventually move it to DLQ (which will call the above copy method). So there is a chance this bug being hit on. |
||
|---|---|---|
| .mvn/wrapper | ||
| .settings | ||
| artemis-boot | ||
| artemis-cdi-client | ||
| artemis-cli | ||
| artemis-commons | ||
| artemis-core-client | ||
| artemis-core-client-all | ||
| artemis-core-client-osgi | ||
| artemis-distribution | ||
| artemis-docker | ||
| artemis-dto | ||
| artemis-features | ||
| artemis-hawtio | ||
| artemis-jdbc-store | ||
| artemis-jms-client | ||
| artemis-jms-client-all | ||
| artemis-jms-client-osgi | ||
| artemis-jms-server | ||
| artemis-journal | ||
| artemis-junit | ||
| artemis-maven-plugin | ||
| artemis-protocols | ||
| artemis-ra | ||
| artemis-rest | ||
| artemis-selector | ||
| artemis-server | ||
| artemis-server-osgi | ||
| artemis-service-extensions | ||
| artemis-tools | ||
| artemis-web | ||
| artemis-website | ||
| docs | ||
| etc | ||
| examples | ||
| integration/activemq-spring-integration | ||
| scripts | ||
| tests | ||
| .gitignore | ||
| .project | ||
| .travis.yml | ||
| LICENSE | ||
| NOTICE | ||
| README.md | ||
| RELEASING.md | ||
| artemis_doap.rdf | ||
| mvnw | ||
| mvnw.cmd | ||
| pom.xml | ||
README.md
ActiveMQ Artemis
This file describes some minimum 'stuff one needs to know' to get started coding in this project.
Source
For details about the modifying the code, building the project, running tests, IDE integration, etc. see our Hacking Guide.
Build Status
Build Status: 
Building the ASYNC IO library
ActiveMQ Artemis provides two journal persistence types, NIO (which uses the Java NIO libraries), and ASYNCIO which interacts with the linux kernel libaio library. The ASYNCIO journal type should be used where possible as it is far superior in terms of performance.
ActiveMQ Artemis does not ship with the Artemis Native ASYNCIO library in the source distribution. These need to be built prior to running "mvn install", to ensure that the ASYNCIO journal type is available in the resulting build. Don't worry if you don't want to use ASYNCIO or your system does not support libaio, ActiveMQ Artemis will check at runtime to see if the required libraries and system dependencies are available, if not it will default to using NIO.
To build the ActiveMQ Artemis ASYNCIO native libraries, please follow the instructions in the artemis-native/README.
Documentation
Our documentation is always in sync with our releases at the Apache ActiveMQ Artemis website.
Or you can also look at the current master version on github.
Examples
To run an example firstly make sure you have run
$ mvn -Prelease install
If the project version has already been released then this is unnecessary.
Each individual example can be run using this command from its corresponding directory:
$ mvn verify
If you wish to run groups of examples then use this command from a parent directory (e.g. examples/features/standard):
$ mvn -Pexamples verify
Recreating the examples
If you are trying to copy the examples somewhere else and modifying them. Consider asking Maven to explicitly list all the dependencies:
# if trying to modify the 'topic' example:
cd examples/jms/topic && mvn dependency:list
Open Web Application Security Project (OWASP) Report
If you wish to generate the report for CCV dependencies, you may run it with the -Powasp profile
$ mvn -Powasp verify
The output will be under ./target/dependency-check-report.html for each sub-module.