[jira] [Created] (CAMEL-17484) RouteTemplates: A flexible builder

["Raymond (Jira)" <ji...@apache.org>]

Raymond created CAMEL-17484:
-------------------------------

             Summary: RouteTemplates: A flexible builder
                 Key: CAMEL-17484
                 URL: https://issues.apache.org/jira/browse/CAMEL-17484
             Project: Camel
          Issue Type: Wish
          Components: came-core
            Reporter: Raymond


I sometimes use a RouteTemplate:

https://camel.apache.org/manual/route-template.html

Then I create a route as follows:

TemplatedRouteBuilder.builder(context, "myTemplate")
    .parameter("name", "one")
    .parameter("greeting", "Hello")
    .add();
    
I am wondering if generating a route could be more flexible? 
For example to use routeTemplates as "blocks" to create one route from multiple routeTemplates. 


TemplatedRouteBuilder.builder(context, "myTemplate,myTemplate2")
    .parameter("name", "one")
    .parameter("greeting", "Hello")
    .add();


Say in myTemplate is like this:

.from("timer:\{{name}}?period=\{{myPeriod}}")
    .setBody(simple("\{{greeting}} ${body}"))

And I have second template myTemplate2:

    .log("${body}");

Then the resulted  route would be:

.from("timer:\{{name}}?period=\{{myPeriod}}")
    .setBody(simple("\{{greeting}} ${body}"))
    .log("${body}");

This would make it more flexible to use a template or not, combine templates and so on. Thus, with 10 templates there would be all kind of configurations possible. 

There could also be the option to combine the templates into one route or with into multiple routes with endpoint between them . 
For example, direct / direct-vm / seda / vm as connecting endpoint. 

If for example, the user would choose "direct" 

TemplatedRouteBuilder.builder(context, "myTemplate,myTemplate2")
    .connectingEndpoint("direct")
    .parameter("name", "one")
    .parameter("greeting", "Hello")
    .add();

 

then the result would be:

.from("timer:\{{name}}?period=\{{myPeriod}}")
    .setBody(simple("\{{greeting}} ${body}"))
    .to("direct:myTemplate2")
    
.from("direct:myTemplate2")
    .log("${body}");

Probably some id would also be need to make the endpoints unique.


The last idea is to use one file or an object to put all the parameters at once. For example by

- file (a xml or json file with properties)
- object (like a map, treemap or properties) --> https://camel.apache.org/components/3.14.x/properties-component.html


TemplatedRouteBuilder.builder(context, "myTemplate,myTemplate2")
    .parameterFile(myJson)
    .add();

TemplatedRouteBuilder.builder(context, "myTemplate,myTemplate2")
    .parameterMap(myMap)
    .add();

This would be convenient with lots of parameters.

 



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