Support binding `retries` on `zeebe:taskDefinition` through element template

[B-hamza]

This is a child of https://github.com/camunda/product-hub/issues/1382.

Is your feature request related to a problem? Please describe.

When trying to create services tasks templates we only can bind the type via zeebe:taskDefinition:type but we can't bind retries elements.

Describe the solution you'd like

Add new binding: zeebe:taskDefinition which accepts property as the name of the templated property. This can be type or retries but ready for new properties.

• Implement in JSON schema
• Implement in bpmn-js-element-templates
• Remove obsolete zeebe:taskDefinition:retries from JSON schema as never implemented
• Document new property

Describe alternatives you've considered

We unlink after selecting templates to be able to set retries.

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Also mentioned via slack.

[nikku]

Thanks for reporting. Missing feature, moving to backlog for the time being.

[tkuy]

Hi @nikku do you have any news on this issue?

[nikku]

No news, unfortunately.

[ajeans]

Hello @nikku

That is a blocker for us to adopt element templates, can you provide a code pointer to implement that? I see that you marked it as "good first issue", so I might give it a try. :-)

[nikku]

@ajeans Could you elaborate how this is a blocker for you?

For additional context the engine uses default retries of 3.

[ajeans]

@nikku oh right, if it is not configurable but falls back to the default value of 3, then this is not a blocker.

You are absolutely right.

I would still be interested in providing support for it, as we might want to add more retries for some tasks.

[nikku]

@ajeans Given that you started implementing this via camunda/element-templates-json-schema#90, do you plan to follow up with the behavior part in our properties panel?

Again implementation is likely a 1:1 copy of zeebe:taskDefinition:type.