adding a mail handler through scriptrunner

[Lance Wong]

im trying to define a new mail handler class through scriptrunner. 

i have a test script under a script root that extends AbstractMessageHandler and implements MessageHandler 

now im trying to  add a message handler module to the plugin descriptor (reference https://developer.atlassian.com/jiradev/jira-platform/guides/email/tutorial-custom-message-mail-handler-for-jira). I did this via a script fragment

<message-handler i18n-name-key="demohandler.name" key="demoHandler" 
 class="com.company.GroovyMessageHandler" 
 add-edit-url="/secure/admin/EditHandlerDetailsUsingParams!default.jspa" weight="0"/>

But then i get an error when JIRA starts up, about this fragment. Excerpt of the log:

at java.lang.Thread.run(Thread.java:724)
Caused by: Assertion failed:assert descriptorClass
 |
 null
 at com.onresolve.scriptrunner.fragments.FragmentsManager.register(FragmentsManager.groovy)
 at com.onresolve.scriptrunner.fragments.IFragmentsManager$register.call(Unknown Source)

and i dont know what to do with this error

[Davin Studer]

FYI, as of 5.5.7 there is now a ScriptRunner mail handler.

[Stephen Cheesley _Adaptavist_]

Hi Lance,

Unfortunately, adding modules to the deployment descriptor is unsupported in ScriptRunner. It may be possible to do what you need but it might be easier to create custom mail handlers using something like JEMH.