d8c378bd28
Fixes https://github.com/spring-projects/spring-integration/issues/2788 * Introduce a `MessageProducerSupport.subscribeToPublisher(Publisher<Message<?>>)` for components which produces `Flux` for data from their source * Such a component is auto-stopped when subscription to that `Publisher` is canceled * Implement a `MongoDbChangeStreamMessageProducer` based on the reactive support for in Spring Data MongoDb * Implement a Java DSL for `MongoDbChangeStreamMessageProducer` * Disable a test for change stream since it requires server of version 4.x started with 'replSet' option * Add `MongoHeaders` for change stream events * Change `MessageProducerSupport` to use a `takeWhile((message) -> isRunning())` instead of storing a `subscription` from a callback * Document new features * Remove trailing whitespaces * Doc 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: https://projects.spring.io/spring-integration