[JIRA] (JENKINS-55315) Obtain target changelist from PerforceScm object in pipeline

[alisdair.robert...@seeingmachines.com (JIRA)]

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Alisdair Robertson created an issue   Jenkins / JENKINS-55315 Obtain target changelist from PerforceScm object in pipeline Issue Type: New Feature Assignee: Unassigned Components: p4-plugin Created: 2018-12-23 03:26 Priority: Major Reporter: Alisdair Robertson We have a multibranch pipeline which after being triggered immediately splits into 6 stages for various linux and windows platforms. The sequence of each of the pipelines goes like this: Obtain branch source (checkout scm) Obtain platform specific thirdparties (p4sync) Obtain common thirdparties (p4sync) Build/Test/Archive/Etc The problem I am having is pinning the thirdparty syncs to the same changelist as the branch, because each instance of a sync can set the P4_CHANGELIST environment variable (which seems to be updated globally) to a different value, so unless I perform a single sync ahead of all the others just to get the changelist and store it, I have a race condition. What I would like to do is be able to put this at the start of my script, before I enter the pipeline block: env.GLOBAL_P4_CHANGELIST = scm.getChangelist() Which would ensure I have a global reference to the changelist that triggered the build to use for pinning the subsequent thirdparty syncs,  that isn't overridden by any subsequent uses of p4sync. I see that PerforceScm has a property P4Ref revision. Can this be exposed in the manner I'd like?   My current workaround consists of either wrapping an initial checkout in a lock step so that I can set the global variable after a first sync has completed (this delays all other parallel stages by the time it takes to sync, which can be up to 10 minutes currently) lock("$env.JOB_NAME-GLOBAL_P4_CHANGELIST"){ if ( !env.GLOBAL_P4_CHANGELIST ){ checkout source_control_management env.GLOBAL_P4_CHANGELIST = "$env.P4_CHANGELIST" env.GLOBAL_P4_CHANGELIST_STAGE = "$env.STAGE_NAME" } echo "GLOBAL_P4_CHANGELIST = $env.GLOBAL_P4_CHANGELIST" echo "GLOBAL_P4_CHANGELIST_STAGE = $env.GLOBAL_P4_CHANGELIST_STAGE" } if ( ! (env.STAGE_NAME == $env.GLOBAL_P4_CHANGELIST_STAGE) ){ checkout source_control_management } or by trying to use a lock on updating the variable immediately after a checkout scm, which still has a race condition. Add Comment   This message was sent by Atlassian Jira (v7.11.2#711002-sha1:fdc329d) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.