I did some work on this to make it work with Pipeline: https://github.com/Dohbedoh/p4-plugin/commit/8602fddd4e1ebb45e45e8ed886b4fa9eccc2deed

I am gonna enrich this with tests and submit a PR as soon as possible.

Hi Paul, Alan, does the build filter 'polling per change' works with this new p4 hook?

Is variable P4_CHANGELIST exposed to pipeline jobs? I tried ${env.P4_CHANGELIST} in jenkinsfile but its not working.

The 'polling per change' should work with the new P4 Trigger feature; if you find an issue please open a New JIRA Issue.

The Workflow --> Pipeline changes are under way and are intended to support the environment.

p4paul: It would be nice if there was a way to get the changelist that was sync'd by the p4sync operation. It could populate the P4_CHANGELIST variable like it used to, but users would have to be aware that the variable only represents the most recent sync operation. Another possibility would be for p4sync to just return the changelist it used for the sync.

Code changed in jenkins
User: Allan Burdajewicz
Path:
src/main/java/org/jenkinsci/plugins/p4/trigger/P4Trigger.java
src/test/java/org/jenkinsci/plugins/p4/client/ConnectionTest.java
http://jenkins-ci.org/commit/p4-plugin/2c179882189200b39d92fddf6f335e1694c2781d
Log:
JENKINS-25249: Fixed trigger probe method for pipeline compatibility.

Code changed in jenkins
User: Allan Burdajewicz
Path:
src/test/java/org/jenkinsci/plugins/p4/client/ConnectionTest.java
http://jenkins-ci.org/commit/p4-plugin/459dcebc4f83bc2b114b2f6e8bcb18382eea02f2
Log:
JENKINS-25249: Added tests for P4 Trigger and Workflow

Compare: https://github.com/jenkinsci/p4-plugin/compare/2c1798821892^...459dcebc4f83

Code changed in jenkins
User: Paul Allen
Path:
src/main/java/org/jenkinsci/plugins/p4/trigger/P4Trigger.java
src/test/java/org/jenkinsci/plugins/p4/client/ConnectionTest.java
http://jenkins-ci.org/commit/p4-plugin/e9a370b5ec856951e944086392962592696e67ee
Log:
Merge pull request #24 from Dohbedoh/JENKINS-25249

Jenkins 25249

Compare: https://github.com/jenkinsci/p4-plugin/compare/8a358595926e...e9a370b5ec85

Code changed in jenkins
User: Allan Burdajewicz
Path:
src/main/java/org/jenkinsci/plugins/p4/trigger/P4Hook.java
src/main/java/org/jenkinsci/plugins/p4/trigger/P4Trigger.java
http://jenkins-ci.org/commit/p4-plugin/d6a42f514e3e7c2b66a2eda04e4f706702c9faeb
Log:
JENKINS-25249: Fixed Null Pointer dereference

Code changed in jenkins
User: Paul Allen
Path:
src/main/java/org/jenkinsci/plugins/p4/trigger/P4Hook.java
src/main/java/org/jenkinsci/plugins/p4/trigger/P4Trigger.java
http://jenkins-ci.org/commit/p4-plugin/c9f91403eb60f93ea5d9da3dc22716e84c6bad23
Log:
Merge pull request #26 from Dohbedoh/hotfix/JENKINS-25249

JENKINS-25249: Fixed Null Pointer dereference

Compare: https://github.com/jenkinsci/p4-plugin/compare/df32b4ec5814...c9f91403eb60