John Wise created NIFI-8514:
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Summary: Add EL support to DistributeLoad
Key: NIFI-8514
URL: https://issues.apache.org/jira/browse/NIFI-8514
Project: Apache NiFi
Issue Type: Improvement
Components: Core UI
Reporter: John Wise
We'd like to be able to feed a list of values to DistributeLoad and use EL to
establish the "Number of Relationships" value from the count of list values.
That would allow us to define a list of URL, hostnames, etc. in a preceding
attribute, which DistributeLoad could then enumerate on its own, to dynamically
establish the number of relationships.
For instance, when provided a list of URLs in an attribute named {{urlList}},
DistributeLoad could then determine the relationship count with
{{${allDelineatedValues:(${urlList}, ","):count()}}}. A subsequent
UpdateAttribute processor could then extract the appropriate URL from the
${urlList} with getDelimitedField, based on the number provided by
DistributeLoad.
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