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JIRA: https://jira.spring.io/browse/INT-3752 JIRA: https://jira.spring.io/browse/INT-3754 The statistics are based on this count so, for example the `meanSendDuration` reflects the mean of total duration from the first send to the last in each batch. Also change the linked lists to `Deque`s. Also remove `isTraceEnabled()` calls - too expensive in high volume environments. Polishing Assign the count to a local variable so the mod (%) operation is short circuited rather than short circuiting the call to isFullStatsEnabled(). INT-3752: Fix Aggregating Metrics Previously, the duration was for the first message in each sample. We need to capture the total elapsed time for the sample and use it for the duration calculation. Add 'newCount' to the context so the after... method can calculate the duration at the end of the sample. The start field does not need to be volatile because its updates are synchronized. INT-3752: Fix Javadocs
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
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