Error Handling Module

Common module to create error response object at server side

List of all constant error codes

• Sequelize error code series starts from 1001
• Cassandra error code series starts from 2001
• Unknown error code series starts from 3001
• Business logic error code series starts from 5001
• Internal error code series starts from 7001

1) constants.SUCCESS

2) constants.CREATED

3) constants.SEQUELIZE_DATABASE_ERROR

4) constants.SEQUELIZE_VALIDATION_ERROR

5) constants.CASSANDRA_DATABASE_ERROR

6) constants.CASSANDRA_VALIDATION_ERROR

7) constants.UNDEFINED_DATABASE_ERROR

8) constants.UNDEFINED_ERROR

9) constants.USER_DUPLICATION_ERROR

10) constants.INVALID_JSON_OBJECT

11) constants.USER_NOT_FOUND

12) constants.COMPARE_PASSWORD_ERROR

13) constants.PASSWORD_NOT_MATCH

14) constants.VALID_CREDENTIALS

15) constants.EMAIL_ALREADY_EXIST

16) constants.INVALID_QUERY_PARAMETERS

17) constants.ERROR_OCCURED_IN_GETTING_USER_LIST

18) constants.UPDATE_DATA_ERROR

19) constants.DELETE_DATA_ERROR

20) constants.KEY_ALREADY_USED

21) constants.ERROR_OCCURED_IN_GETTING_MASTER_LIST

22) constants.SEQUELIZE_FOREIGN_KEY_CONSTRAINT_ERROR

23) constants.ERROR_OCCURED_IN_GETTING_ECG_DATA

Sample response

1) Success Response

{
  "code": "SS-200",
  "message": "Success",
  "data": [
    {
      "id": "204adf30-f444-11e6-bf17-574185f61676",
      "account": 1,      
      "ticket_id": null,
      "timestamp": "1486665020",
      "sensor_uuid": "1234",
      "ecgdata_status": null,
      "ticket_number": null,
      "patient_id": null
    }
  ]
}

2) Error Response

{
  "code": "US-1002",
  "message": "Sequelize validation failed",
  "error": {
    "name": "SequelizeValidationError",
    "message": "notNull Violation: first_name cannot be null",
    "errors": [
      {
        "message": "first_name cannot be null",
        "type": "notNull Violation",
        "path": "first_name",
        "value": null
      }
    ]
  }
}

Commands to pubish npm module

1) Login-

    npm login    

3) Publish npm module-

    npm publish

4) Update existing npm module with new version-

    npm version [patch/minor/major]   
    npm publish      

5) Update readme file for npm module-

    npm publish --update-readme

5) Update package.json of app with new version-

    npm update --save