Laravel JSON Exception Formatter

A custom interface for the Laravel JSON Exception Formatter package.

This package is designed to work with exceptions that extend the antarctica/laravel-base-exceptions package, but does not require this.

Installing

Require this package in your composer.json file:

{
	"require": {
		"antarctica/laravel-json-exception-formatter": "dev-develop"
	}
}

Run composer update.

Register the service provider in app/config/app.php:

'providers' => array(

	'Antarctica\JsonExceptionFormatter\JsonExceptionFormatterServiceProvider',
	
),

Note: this package automatically requires and registers the JSON Exception Formatter package behind the scenes.

Usage

Registering the service provider is enough to automatically call this package. The underlying JSON Exception Formatter is triggered whenever a request that requests a JSON response (i.e. accept: application/json) and an exception is thrown.

This package is a Custom Formatter of this underlying package.

It provides an alternative representation for exceptions as errors for both debug and non-debug environments.

The main difference in our custom implementation is the inclusion of the custom properties available to exceptions that extend the HttpException exception from the antarctica/laravel-base-exceptions package.

Exceptions extending other exceptions will be rendered without this extra information, but do not remove any information (i.e. this package becomes transparent).

In addition to extra error information, debug environments will include the PHP stack trace in responses to aid to diagnostics.

Example usage

Exception on which responses are based upon:

<?php

use Antarctica\LaravelBaseExceptions\Exception\HttpException;

class AuthenticationException extends HttpException {

    protected $statusCode = 401;

    protected $kind = 'authentication_failure';

    protected $details = [
        "authentication_error" => [
            "Ensure your credentials are correct and that your user account is still active, or contact the maintainer of this API for assistance."
        ]
    ];
}

Exception in a non-debug environment:

{
    "errors": [
        {
            "details": {
                "authentication_error": [
                    "Ensure your credentials are correct and that your user account is still active, or contact the maintainer of this API for assistance."
                ]
            },
            "type": "authentication_failure"
        }
    ]
}

Exception in a debug environment:

{
    "errors": [
        {
            "details": {
                "authentication_error": [
                    "Ensure your credentials are correct and that your user account is still active, or contact the maintainer of this API for assistance."
                ]
            },
            "exception": "Antarctica\\LaravelTokenAuth\\Exception\\Auth\\AuthenticationException",
            "file": "/app/vendor/antarctica/laravel-token-auth/src/Antarctica/LaravelTokenAuth/Service/Token/TokenServiceJwtAuth.php",
            "kind": "authentication_failure",
            "line": 88,
            "stack_trace": [
                {
                    "file": "/app/vendor/antarctica/laravel-token-auth/src/Antarctica/LaravelTokenAuth/Service/TokenUser/TokenUserService.php",
                    "line": 91,
                    "function": "authOnce",
                    "class": "Antarctica\\LaravelTokenAuth\\Service\\Token\\TokenServiceJwtAuth",
                    "type": "->",
                    "args": [
                        {
                            "username": "xxx",
                            "password": "xxx"
                        }
                    ]
                },
                ...
                {
                    "file": "/app/public/index.php",
                    "line": 49,
                    "function": "run",
                    "class": "Illuminate\\Foundation\\Application",
                    "type": "->",
                    "args": []
                }
            ]
        }
    ]
}

Contributing

This project welcomes contributions, see CONTRIBUTING for our general policy.

Developing

To aid development and keep your local computer clean, a VM (managed by Vagrant) is used to create an isolated environment with all necessary tools/libraries available.

Requirements

• Mac OS X
• Ansible brew install ansible
• VMware Fusion
• Vagrant brew cask install vmware-fusion vagrant
• Host manager and Vagrant VMware plugins vagrant plugin install vagrant-hostmanager && vagrant plugin install vagrant-vmware-fusion
• You have a private key id_rsa and public key id_rsa.pub in ~/.ssh/
• You have an entry like [1] in your ~/.ssh/config

[1] SSH config entry

Host bslweb-*
    ForwardAgent yes
    User app
    IdentityFile ~/.ssh/id_rsa
    Port 22

Provisioning development VM

VMs are managed using Vagrant and configured by Ansible.

$ git clone ssh://git@stash.ceh.ac.uk:7999/basweb/laravel-json-exception-formatter.git
$ cp ~/.ssh/id_rsa.pub laravel-json-exception-formatter/provisioning/public_keys/
$ cd laravel-json-exception-formatter
$ ./armadillo_standin.sh

$ vagrant up

$ ssh bslweb-laravel-json-exception-formatter-dev-node1
$ cd /app

$ composer install

$ logout

Committing changes

The Git flow workflow is used to manage development of this package.

Discrete changes should be made within feature branches, created from and merged back into develop (where small one-line changes may be made directly).

When ready to release a set of features/changes create a release branch from develop, update documentation as required and merge into master with a tagged, semantic version (e.g. v1.2.3).

After releases the master branch should be merged with develop to restart the process. High impact bugs can be addressed in hotfix branches, created from and merged into master directly (and then into develop).

Issue tracking

Issues, bugs, improvements, questions, suggestions and other tasks related to this package are managed through the BAS Web & Applications Team Jira project (BASWEB).

Clean up

To remove the development VM:

vagrant halt
vagrant destroy

The laravel-json-exception-formatter directory can then be safely deleted as normal.

License

Copyright 2014 NERC BAS. Licensed under the MIT license, see LICENSE for details.