Filter emails by subject on a per-project basis

Scenario

You may want to drop mail with specific subjects on a per project basis, the global approach won’t work.

Approach

A single script that tests for an ‘issue’ in scope (i.e. its a reply) and that the key of the related project is the one wanted, then check a sub-string of the supplied project.

Example Mail

MIME-Version: 1.0
Received: by 10.223.112.12 with HTTP; Sat, 18 Jun 2011 22:42:26 -0700 (PDT)
Date: Sun, 19 Jun 2011 17:42:26 +1200
Message-ID: <BANLkTinB1mfSh+GwOXGNWoL4SyDvOpdBoQ@mail.gmail.com>
Subject: This is a starting email template, update as required DCSP-2 drop me 
From: admin@localhost
To: helpdesk@nn.net
Content-Type: text/plain; charset=UTF-8

some text

Example Script

if ( relatedIssue!=null && subject!=null) {
    var projectKey = relatedIssue.getProjectObject().getKey();
    print('project is: '+projectKey);
    switch (projectKey) {
        case 'DCSP':
            if (subject.indexOf('drop me') != -1) {
                jemhUtils.dropMessage('dropped because of DCSP:[drop me]...');
                print('mail was dropped by subject script '+projectKey);
            } else {
                print('add more tests');
            }
            break;

        case 'SW':
          print('add SW tests');
          break;
        default:
            print('unfiltered project: '+projectKey);
    }
}

Validate the script

Using the Test Case associated with the Profile, we can evaluate the script at edit time:

Outcome

Executing the script should result in a clear outcome: