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https://issues.apache.org/jira/browse/NIFI-1893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15668200#comment-15668200
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Joseph Witt commented on NIFI-1893:
-----------------------------------

[~bartoszjkwozniak] [~pvillard] [~mattyb149] Unfortunately we need to revert 
this commit/processor for now.  I've reopened the JIRA.  It depends on a 
library which is now considered category X and also we need to reflect these 
new libs in our license/notice.  Everit for example needs a copyright ref in 
our notice and it is what pulls in the now catx json dependency.

> Add processor for validating JSON
> ---------------------------------
>
>                 Key: NIFI-1893
>                 URL: https://issues.apache.org/jira/browse/NIFI-1893
>             Project: Apache NiFi
>          Issue Type: New Feature
>            Reporter: Matt Burgess
>
> NiFi has a ValidateXml processor to validate incoming XML files against a 
> schema. It would be good to have one to validate JSON files as well.
> For example, an input JSON of:
> {
>   name: "Test",
>   timestamp: 1463499695,
>   tags: {
>        "host": "Test_1",
>        "ip" : "1.1.1.1"
>   },
>   fields: {
>     "cpu": 10.2,
>     "load": 15.6
>   }
> }
> Could be validated successfully against the following "schema":
> {
>   "type": "object",
>   "required": ["name", "tags", "timestamp", "fields"],
>   "properties": {
>     "name": {"type": "string"},
>     "timestamp": {"type": "integer"},
>     "tags": {"type": "object", "items": {"type": "string"}},
>     "fields": { "type": "object"}
>   }
> }
> There is at least one ASF-friendly library that could be used for 
> implementation: https://github.com/everit-org/json-schema



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