Notifications: The recipient parameter does not have a character limit

[OvidioMiranda]

Description

---

When we send a notification with a container with more than 256 characters it returns a response of status code 500

Environment

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• An Notifier Server installed with version 1.0
• Operating System and version: Windows Server 2012 R2

Requirements

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• Rest Client: E.g. Postman.
• Channel already created and retrieve id: E.g. 353

API

• Method: POST
• Endpoint: /api/notifications

Steps to Reproduce

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1. Open Postman.
2. In Postman select 'POST' method for URL.
3. In Postman Enter the endpoint to send a notification.. E.g. http://128.0.0.1/api/notifications/
4. In Postman select Body tab. A Key - Value appears.
5. In Postman under Body tab select the radio button with the 'raw' option.
6. In Postman under Body tab press the drop down list button that says 'Text' and select the 'JSON(application/json)' option.
7. In Postman in text area field write the body for send a notification. E.g.

{ "channelId" : 353,
  "priority" : "NORMAL",
  "recipients" : ["aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"],
  "subject" : "Test",
  "content" : "A testing message from notifier"
}

8. Click on Send button. Receive a json response similar to this e.g.

{
    "timestamp": 1507677416263,
    "status": 500,
    "error": "Internal Server Error",
    "exception": "org.springframework.dao.DataIntegrityViolationException",
    "message": "Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; nested exception is org.hibernate.exception.DataException: could not execute statement",
    "path": "/notifications/"
}

9. Verify that a status code 500 is returned

Actual Result

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We receive a response with status code 500 "Internal Server Error"

Expected Result

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You should return the following response.

     {
    "status": 400,
    "error": "Bad Request",
    "exception": "org.springframework.web.bind.MethodArgumentNotValidException",
    "errors": [
        {
            "field": "recipients",
            "code": "Size",
            "defaultMessage": "size must be between 1 and 22"
        }
    ],
    "message": "Bad Request",
    "path": "/notifications"
     }

Note: This case is for recipients in slack handles ranges from 1 to 22 characters.