See perforce hooks scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslite/perforce/ 

For Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslitecloud/perforce/

See perforce hooks scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslite/subversion 

For Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslitecloud/subversion/

See perforce hooks scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslite/git 

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslitecloud/git/

See this script example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslite/joblinks 

See Gerrit hook scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslite/gerrit 

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslitecloud/gerrit/

See Collaborator hook scripts example here https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslite/coco

Jira Cloud: https://bitbucket.org/scmenthusiast/jira-scm-activity-scripts/src/master/triggerslitecloud/coco/