b7ba238860
JIRA: https://jira.spring.io/browse/INT-3656 The optimization (when no interceptors) inadvertently removed the `preSend` DEBUG log. Reinstate the DEBUG log. Also change `ChannelInterceptorList` to a `static` class. This avoids the access method invocation each time the channel's `logger` is used. The only `AMC` field used was the `logger`; pass it into the `CIL` via a constructor. Old bytecode: 104: aload_0 105: getfield #14 // Field this$0:Lorg/springframework/integration/channel/AbstractMessageChannel; 108: invokestatic #60 // Method org/springframework/integration/channel/AbstractMessageChannel.access$1:(Lorg/springframework/integration/channel/AbstractMessageChannel;)Lorg/apache/commons/logging/Log; 111: invokeinterface #66, 1 // InterfaceMethod org/apache/commons/logging/Log.isDebugEnabled:()Z 116: ifeq 157 New bytecode: 98: aload_0 99: getfield #22 // Field logger:Lorg/apache/commons/logging/Log; 102: invokeinterface #60, 1 // InterfaceMethod org/apache/commons/logging/Log.isDebugEnabled:()Z
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