c31a96d4cb
JIRA: https://jira.spring.io/browse/INT-4132 The race condition is present when polling task may be ran before `MessageSource<?>` has been started. * Swap the order of `start()` in the `SourcePollingChannelAdapter`. Since proxying is now applied only for the `MessageSource.receive()` it doesn't hurt to start it before actual proxying. Just because it is really should be started before performing its `receive()` * Prove the proper order with the mock test and protect ourselves for the future similar changes * Also swap the `stop()` order in the `SourcePollingChannelAdapter. We have to stop/cancel the polling task before discarding internal `MessageSource` lifecycle. For example with the current state we may close an underlying resource already, but still have the last polling tick. That may cause any unexpected behaviour **Cherry-pick to 4.3.x** 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