# Google Cloud Tasks App Engine Queue Samples

## Description

Al code in the snippets directory demonstrate how to invoke Cloud Tasks from PHP.

`src/create_task.php` is a simple function to create tasks with App Engine routing.

## Setup:

1.  **Enable APIs** - [Enable the Cloud Tasks API](https://console.cloud.google.com/flows/enableapi?apiid=cloudtasks)
    and create a new project or select an existing project.
2.  **Download The Credentials** - Click "Go to credentials" after enabling the APIs. Click "New Credentials"
    and select "Service Account Key". Create a new service account, use the JSON key type, and
    select "Create". Once downloaded, set the environment variable `GOOGLE_APPLICATION_CREDENTIALS`
    to the path of the JSON key that was downloaded.
3.  **Clone the repo** and cd into this directory

    ```sh
    $ git clone https://github.com/GoogleCloudPlatform/php-docs-samples
    $ cd php-docs-samples/appengine/standard/tasks
    ```
4.  **Install dependencies** via [Composer](http://getcomposer.org/doc/00-intro.md).
    Run `php composer.phar install` (if composer is installed locally) or `composer install`
    (if composer is installed globally).
5.  Create a Queue
    To create a queue using the Cloud SDK, use the following gcloud command:
    ```sh
    gcloud tasks queues create my-appengine-queue
    ```
6. Set environment variables:

    First, your project ID:

        export PROJECT_ID=my-project-id

    Then the queue ID, as specified at queue creation time. Queue IDs already
    created can be listed with `gcloud tasks queues list`.

        export QUEUE_ID=my-appengine-queue

    Then, identify the queue location

        Determine the location ID, which can be discovered with
        `gcloud tasks queues describe $QUEUE_ID`, with the location embedded in
        the "name" value (for instance, if the name is
        "projects/my-project/locations/us-central1/queues/my-pull-queue", then the
        location is "us-central1").

        export LOCATION_ID=us-central1

## Using App Engine Routing
1. Run `php src/create_task.php`. The usage will print for each if no arguments are provided:

    ```
    $> php src/create_task.php
    Usage: php src/create_task.php PROJECT_ID LOCATION_ID QUEUE_ID [PAYLOAD]
    ```

## Contributing changes

* See [CONTRIBUTING.md](../../CONTRIBUTING.md)

## Licensing

* See [LICENSE](../../LICENSE)