Some Errors

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¶

Some Errors

The bluebird Promise can catch error by the error type. So we define some special error here.

api.variant sku: '0'
.then (v) ->
  console.log v.price
.catch (NotFoundError, err) ->
  console.error 'are you sure you provide a right sku?'
.catch (AuthError, err) ->
  console.error 'oh! we need key!'
.catch (Http500Error, err) ->
  console.error 'wish tired.'

module.exports = errors = require 'errors'

¶

ParamInvalidError

Raise when you provide some invalid param. eg. get order id ‘0’.

Wish is only check a little param. product id ‘0’ will return not found error.
```
errors.create
  name: 'ParamInvalidError'
  code: 1000
```

ParamMissingError

Raise when you missing some must provide param. eg. missing api key.

errors.create
  name: 'ParamMissingError'
  defaultMessage: 'Required Param Missing'
  code: 1001

¶

NotFoundError

Raise when you query some model but there is not that model. eg. wrong product id.
```
errors.create
  name: 'NotFoundError'
  code: 1004
```

AuthError

Raise when you provide a wrong api key.

errors.create
  name: 'AuthError'
  defaultMessage: 'Unauthorized Request'
  code: 4000

ServerError

Raise when wish down or return a mistake format data for us. eg. html page.

errors.create
  name: 'ServerError'
  defaultMessage: 'Server Return Unknown Contest.'
  defaultExplanation: 'Maybe server is maintaining.'
  code: 911

Find and return special wish error by code.

errors.wish = (body) ->
  { code } = body
  FoundError = errors.find code
  
  delete body.code
  
  new FoundError body

Find and return special http error by status code.

errors.http = (code) ->
  HttpError = errors.find code
  
  new HttpError