JIRA: https://jira.spring.io/browse/INT-4371 Add an abstract message source that populates the message with a header containing an abstraction that allows the application to acknowledge/reject/requeue the message. (In amqp, for example, this would map to channel.basicAck(tag), channel.basicReject(tag, false), and channel.basicReject(tag, true). With some brokers (such as kafka), acknowledge and reject might be equivalent since there is no automatic DLQ processing in kafka both would simply commit the offset. Also include a strategy interface for a factory to provide the acknowledgment header. Add MessageSourcePollableChannel Fix typo Polishing - PR Comments - remove marker interface; just use presence of the header for auto-ack - remove the MessageSourcePollableChannel - users can use a MethodInterceptor to enhance the message - other PR comments Save entire response to allow customization of the ack/nack actions. Docs, Copyrights; add MessageSourcePollingTemplate Polishing - PR Comments - support disabling auto-ack, when possible. More Utilities * Simple code style polishing
Spring Integration

Checking out and Building
To check out the project and build from source, do the following:
git clone git://github.com/spring-projects/spring-integration.git
cd spring-integration
./gradlew build
NOTE: While Spring Integration runs with Java SE 6 or higher, a Java 8 compiler is required to build the project.
If you encounter out of memory errors during the build, increase available heap and permgen for Gradle:
GRADLE_OPTS='-XX:MaxPermSize=1024m -Xmx1024m'
To build and install jars into your local Maven cache:
./gradlew install
To build api Javadoc (results will be in build/api):
./gradlew api
To build reference documentation (results will be in build/reference):
./gradlew reference
To build complete distribution including -dist, -docs, and -schema zip files (results will be in build/distributions)
./gradlew dist
Using Eclipse
To generate Eclipse metadata (.classpath and .project files), do the following:
./gradlew eclipse
Once complete, you may then import the projects into Eclipse as usual:
File -> Import -> Existing projects into workspace
Browse to the 'spring-integration' root directory. All projects should import free of errors.
Using IntelliJ IDEA
To generate IDEA metadata (.iml and .ipr files), do the following:
./gradlew idea
Resources
For more information, please visit the Spring Integration website at: http://projects.spring.io/spring-integration