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https://issues.apache.org/jira/browse/CAMEL-23666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18085496#comment-18085496
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Raymond commented on CAMEL-23666:
---------------------------------
I tried a few things, but get errors on route loading like
_Failed to resolve endpoint: \{{out}} due to: Property with key [out] not found
in properties from text: \{{out}}"_
Some things I tried:
{code:java}
"{{?uri}} == null"
{code}
_No endpoint could be found for: null, please check your classpath contains the
needed Camel component jar._
-----------
{code:java}
disabled: {{?out}} == null
{code}
_Could not load Kamelet: log-sink.kamelet.yaml. Reason: Non scalar key is
detected but it is not configured to be allowed._
-----------
{code:java}
- to:
disabled: "'{{?out}}' == null"
uri: "{{?out}}"{code}
_No endpoint could be found for: \{{?out}}, please check your classpath
contains the needed Camel component jar._
*Using default*
I also try to set a dummy default value on the parameter:
{code:java}
out:
title: "Sink Endpoint"
type: "string"
default: "log:dummy" {code}
But this also gave some error on loading the route
{code:java}
${`{{out}}` == 'log:dummy'}{code}
_Error parsing [mock:dummy == mock:dummy] from property \{{out}} == mock:dummy
as a java.lang.Boolean._
---------------------
{code:java}
${`{{out}}` == 'log:dummy'}{code}
_because: Error parsing ['log:dummy' == 'log:dummy'] from property '\{{out}}'
== 'log:dummy' as a java.lang.Boolean._
---------------------
disabled: "${'\{{out}}' == 'log:dummy'}"
_Error parsing [${'log:dummy' == 'log:dummy'}] from property ${'\{{out}}' ==
'log:dummy'} as a java.lang.Boolean._
I think the issue with this is also that:
*1. Documentation*
The disabled node is practical, but not well documented (I could't find a
page), so it's not clear what the syntax is. Is evaluated as a Java code, or as
simple language?
*2. Pattern*
Though the _disabled_ is of course pre evaluated before the route loads, it
could behave like an EIP such as filter:
{color:#000000} -
{color}{color:#008080}filter{color}{color:#000000}:{color}
{color:#000000}
{color}{color:#008080}expression{color}{color:#000000}:{color}
{color:#000000}
{color}{color:#008080}simple{color}{color:#000000}: "{color}{color:#0451a5}${x}
== 'dummy'"{color}
Would be nice if disabled can do the same:
{color:#000000} -
{color}{color:#008080}disabled{color}{color:#000000}:{color}
{color:#000000}
{color}{color:#008080}expression{color}{color:#000000}:{color}
{color:#000000}
{color}{color:#008080}simple{color}{color:#000000}: "{color}{color:#0451a5}${x}
== 'dummy'"{color}
> [Kamelet/Route Templates] Support optionals for endpoints uris
> --------------------------------------------------------------
>
> Key: CAMEL-23666
> URL: https://issues.apache.org/jira/browse/CAMEL-23666
> Project: Camel
> Issue Type: Improvement
> Components: camel-core, camel-kamelet
> Reporter: Raymond
> Priority: Minor
>
> Currently Kamelets and Route Templates support optional endpoint options on
> URI. For example:
> {code:java}
> - to:
> uri: "aws2-s3:{{bucketNameOrArn}}"
> parameters:
> secretKey: "{{?secretKey}}"
> accessKey: "{{?accessKey}}"
> region: "{{region}}"
> autoCreateBucket: "{{autoCreateBucket}}"
> useDefaultCredentialsProvider: "{{useDefaultCredentialsProvider}}"
> useProfileCredentialsProvider: "{{useProfileCredentialsProvider}}"
> useSessionCredentials: "{{useSessionCredentials}}"
> uriEndpointOverride: "{{?uriEndpointOverride}}"
> profileCredentialsName: "{{?profileCredentialsName}}"
> sessionToken: "{{?sessionToken}}"
> overrideEndpoint: "{{overrideEndpoint}}"
> forcePathStyle: "{{forcePathStyle}}"
> keyName: "{{?keyName}}" {code}
> All parameters that has a ? like \{{?secretKey}} are ingored when they are
> not provided when creating a new template/kamelet.
> Sometimes I provide a complete uri:
> {code:java}
> - to:
> uri: "{{uri}}"{code}
> , but this endpoint is not always needed. In this case I would like to set
> this:
> {code:java}
> - to:
> uri: "{{?uri}}"{code}
> Where the complete node/endpoint is ignored/disabled when no uri is provided
> or is null.
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