Trying to script adding watchers in JIRA 7.1.7, WatcherManager.startWatching() is complaining about types DelegatingApplicationUser and IssueImpl

[DH]

I'm trying to add watchers after a Story is added in a project. I've been bouncing all over existing questions and sample scripts, but changes in JIRA versions have rendered all the examples I could find as deficient in one way or another.

Not sure where this is breaking since from what I can tell DelegatingApplicationUser is an implementation of ApplicationUser and IssueImpl is an implementation of Issue.

groovy.lang.MissingMethodException: No signature of method: static com.atlassian.jira.issue.watchers.WatcherManager.startWatching() is applicable for argument types: (com.atlassian.jira.user.DelegatingApplicationUser, com.atlassian.jira.issue.IssueImpl) values: [johndoe(johndoe), ISS-01]

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.user.util.UserManager
import com.atlassian.jira.issue.watchers.WatcherManager


def userManager = ComponentAccessor.getUserManager()
def watchUsers = {usernames ->
  usernames.each {
    def user = userManager.getUserByName("${it}")
      WatcherManager.startWatching(user, issue)
  }
}

def users = ["johndoe","janedoe"]


if(issue.getIssueType().name=="Story"){
  watchUsers(users)
}

[Petar Petrov (Appfire) · Accepted solution]

What the error says is that it cannot find such static method in WatcherManager - the key here being the word "static". The script is invoking startWatching() as a static method, it should be called on the instance instead:

def watcherManager = ComponentAccessor.getWatcherManager()
watcherManager.startWatching(user, issue)

[DH]

Thank you! Went through so many iterations that I missed that.

Here is the final working code for anyone trying to get through this versioning hell as well, working as of v 7.1.7

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.user.util.UserManager
import com.atlassian.jira.issue.watchers.WatcherManager


def userManager = ComponentAccessor.getUserManager()
def watcherManager = ComponentAccessor.getWatcherManager()


def watchUsers = {usernames ->
   usernames.each {
         def user = userManager.getUserByName("${it}")
         watcherManager.startWatching(user, issue)
      }
}


def users = ["johndoe","janedoe"]
if(issue.getIssueType().name=="Story"){
	watchUsers(users)
}

[Rose Cruz]

I wanted to use this script on the Create transition, but can't get it to work in JIRA 7.2.6. Any ideas? Error below.

2017-01-06 12:25:32,467 ERROR [workflow.ScriptWorkflowFunction]: *************************************************************************************
2017-01-06 12:25:32,467 ERROR [workflow.ScriptWorkflowFunction]: Script function failed on issue: null, actionId: 1, file: <inline script>
java.lang.NullPointerException
	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:210)
	at com.google.common.cache.LocalCache$LocalManualCache.invalidate(LocalCache.java:4764)
	at com.atlassian.jira.issue.watchers.DefaultWatcherManager.updateWatch(DefaultWatcherManager.java:168)
	at com.atlassian.jira.issue.watchers.DefaultWatcherManager.startWatching(DefaultWatcherManager.java:85)
	at com.atlassian.jira.issue.watchers.DefaultWatcherManager.startWatching(DefaultWatcherManager.java:76)
	at com.atlassian.jira.issue.watchers.WatcherManager$startWatching.call(Unknown Source)
	at Script33$_run_closure1$_closure2.doCall(Script33.groovy:13)
	at Script33$_run_closure1.doCall(Script33.groovy:11)
	at Script33.run(Script33.groovy:20)

[Pritesh Jagani]

Here's the solution worked for me:  You can remove the Components condition.

[SORIOT Mickaël]

It work's for me. Thanks