Resolves https://github.com/spring-projects/spring-integration-kafka/issues/184 Polishing - changes in core Pause/Resume; Add integration tests Synchronize all consumer operations on the consumer, to support noAutoAck() Polishing - PR Comments More polishing Major rework - see commit comment - only fetch one record at a time (warn log and seek if max.poll.records incorrect) - when an application has multiple outstanding records, - track records; apply commits in the right order, deferring if necessary - when requeued, mark later offsets as rolled back to prevent commits - Support transactions - start/end transactions - provide access to the producer Fix transaction synchronization - if there is an existing Kafka transaction, participate in it - if not, bind a new transactional resource to the thread - allows a KafkaTemplate to participate by utilizing the producer factory message header - if there is an existing non-kafka transaction, sync the kafka transaction with it Check for KafkaMessageHeaders when building the message. Polishing - PR Comments Simplify AckInfo Remove internal transaction support - the user can start a transacion before calling receive and send offsets to the transaction using a KafkaTemplate. Polishing * Simple polishing according IDEA warnings * Upgrade to Gradle 4.4.1 * Some upgrades and dependencies polishing
Spring Integration

Code of Conduct
Please see our Code of conduct.
Reporting Security Vulnerabilities
Please see our Security policy.
Checking out and Building
To check out the project and build from the 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 an 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