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From "Joe Warner (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (NIFI-4397) PutElasticsearchHttp Processor: Elasticsearch URL property isn't expanding nifi language expressions
Date Thu, 21 Sep 2017 11:54:00 GMT

    [ https://issues.apache.org/jira/browse/NIFI-4397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16174618#comment-16174618
] 

Joe Warner edited comment on NIFI-4397 at 9/21/17 11:53 AM:
------------------------------------------------------------

The behaviour I'm seeing now isn't what I remember, so my original description may not be
accurate, but I think the following should illustrate the problem.

I want to be able to set the 'Elasticsearch URL' property dynamically from an atttribute.
Assume I have an attribute set as follows, es_host = http://<my_es_server>. Then if
I set 
'Elasticsearch URL' = \${es_host} 
then what I get is 

!screenshot-1.png!

I also tried it with es_host = <my_es_server> and 'Elasticsearch URL' = http://${es_host}
and what I get is 

!screenshot-2.png!


was (Author: joewarner):
The behaviour I'm seeing now isn't what I remember, so my original description may not be
accurate, but I think the following should illustrate the problem.

I want to be able to set the 'Elasticsearch URL' property dynamically from an atttribute.
Assume I have an attribute set as follows, es_host = http://<my_es_server>. Then if
I set 
{quote}
'Elasticsearch URL' = \${es_host} 
{quote}
then what I get is 

!screenshot-1.png!

I also tried it with es_host = <my_es_server> and 'Elasticsearch URL' = http://${es_host}
and what I get is 

!screenshot-2.png!

> PutElasticsearchHttp Processor: Elasticsearch URL property isn't expanding nifi language
expressions
> ----------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-4397
>                 URL: https://issues.apache.org/jira/browse/NIFI-4397
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.3.0
>            Reporter: Joe Warner
>            Priority: Minor
>         Attachments: screenshot-1.png, screenshot-2.png
>
>
> Despite the documentation saying that the PutElasticsearchHttp processor should support
expression language this isn't happening. The Index property works correctly however. The
property validates whether the value looks like a URL. But it seems like this validation is
taking place before the expression is evaluated. Also, expressions like 'http://${url}' still
are not evaluated.
> Technically I guess this isn't a 'major' issue, but it is quite painful to use it without
the replacement happening. See also NIFI-4396 which is very similar behaviour.



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