This proposal fixes many build warnings and is a general cleanup of the pom.xml files.
* Remove duplicate `dependency` entries from pom.xml files
* Remove duplicate `repository` entries from pom.xml files
* Replace deprecated use of `receive(long)` in `HttpSourceTests`
* Reduce logging for Twitter integration tests
Fixes#271
Fixes https://github.com/spring-cloud/stream-applications/issues/156
The `MessageSource.receive()` may produce `null`:
The `MessageSourceMutator` impl must honor such an input
* Add `MonoProcessor<Boolean> subscriptionBarrier` to delay
subscription to the source `Flux` until subscription happens
to the supplier's flux.
This way we don't have unexpected interaction with the source when
there are regular endpoints in the flow in between
This is so they can be updated in a minimal amount of places and leverage the maven hierarchy to propagate them where appropriate.
While working with SNAPSHOT releases of Spring Boot, Spring Integration, and Spring Cloud, it required touching every pom.xml file
in order to reflect the use of the SNAPSHOT. After this change, it will only be required to change the property in the top
functions pom.xml and the versions will reflect to all submodules.
Maven introduced the ability use a key property, revision to propagate this information to the <parent> declarations in each pom.
This was enabled in Maven 3.5+
https://maven.apache.org/maven-ci-friendly.html
