[GitHub] [camel-k-runtime] lburgazzoli edited a comment on issue #631: Optional parameters in Kamelet route templates

[GitBox <gi...@apache.org>]

lburgazzoli edited a comment on issue #631:
URL: https://github.com/apache/camel-k-runtime/issues/631#issuecomment-779704369


   This is not a route template issue in reality but a generic camel one, as in fact the from is translated to: 
   
       from: "paho:the-topic?clientId={{clientId}}&brokerUrl=the-url"
   
   So when the endpoint get resolved, then the property must be there. An option is to use default values, as example:
   
   ```yaml
   from:
     uri: paho:the-topic
     parameters:
       clientId: "{{clientId:defaultId}}"
       brokerUrl: "the-url"
   ```
   
   but maybe we also need to introduce an way to explicit mark some properties as optional, maybe with a a new property function like `{{optional:nameOfTheProperty}}` and or have a way to use simple language to set defaults, like `{{optional:nameOfTheProperty:${uuid}}}`
   
   /cc @davsclaus @valdar 
       
   


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