3scale integration plugin for PHP applications. 3scale is an API Infrastructure service which handles API Keys, Rate Limiting, Analytics, Billing Payments and Developer Management. Includes a configurable API dashboard and developer portal CMS. More product stuff at http://www.3scale.net/, support information at http://support.3scale.net/.

• Plugin Setup: https://support.3scale.net/docs/deployment-options/plugin-setup
• Rate Limiting: https://support.3scale.net/docs/access-control/rate-limits
• Analytics Setup: https://support.3scale.net/quickstarts/3scale-api-analytics

Download the source code from github: http://github.com/3scale/3scale_ws_api_for_php and place it somewhere accessible from your project.

Require the ThreeScaleClient.php file (assuming you placed the library somewhere within the include path):

require_once('lib/ThreeScaleClient.php')

Then create an instance of the client

$client = new ThreeScaleClient();

NOTE: unless you specify ThreeScaleClient(); you will be expected to specify a provider_key parameter, which is deprecated in favor of Service Tokens:

$client = new ThreeScaleClient("your provider key");

Because the object is stateless, you can create just one and store it globally.

Then you can perform calls in the client:

$response = $client->authorize("app id", "app key", new ThreeScaleClientCredentials("service id", "service token"));

$response = $client->report(array(array('app_id' => "app's id"],'usage' => array('hits' => 1))), new ThreeScaleClientCredentials("service id", "service token"));

NOTE:service_id is mandatory since November 2016, both when using service tokens and when using provider keys

To authorize a particular application, call the authorize method passing it the application id and service id and optionally the application key:

$response = $client->authorize("app id", "app key", new ThreeScaleClientCredentials("service id", "service token"));

If you had configured a (deprecated) provider key, you would instead use:

$response = $client->authorize("the app id", "the app key", "service id"));

Then call the isSuccess() method on the returned object to see if the authorization was successful:

if ($response->isSuccess()) {
  // All fine, proceeed.
} else {
  // Something's wrong with this app.
}

If both provider and app id are valid, the response object contains additional information about the status of the application:

//Returns the name of the plan the application is signed up to.
$response->getPlan()

If the plan has defined usage limits, the response contains details about the usage broken down by the metrics and usage limit periods.

// The usageReports array contains one element per each usage limit defined on the plan.
$usageReports = $response->getUsageReports();
$usageReport  = $usageReports[0];

// The metric
$usageReport->getMetric() // "hits"

// The period the limit applies to
$usageReport->getPeriod()       // "day"
$usageReport->getPeriodStart()  // 1272405600 (Unix timestamp for April 28, 2010, 00:00:00)
$usageReport->getPeriodEnd()    // 1272492000 (Unix timestamp for April 29, 2010, 00:00:00)

// The current value the application already consumed in the period
$usageReport->getCurrentValue() // 8032

// The maximal value allowed by the limit in the period
$usageReport->getMaxValue()     // 10000

// If the limit is exceeded, this will be true, otherwise false:
$usageReport->isExceeded()      // false

If the authorization failed, the getErrorCode() returns system error code and getErrorMessage() human readable error description:

$response->getErrorCode()       // "usage_limits_exceeded"
$response->getErrorMessage()    // "Usage limits are exceeded"

To authorize a particular application, call the authrep method passing it the application id and service id and optionally the application key:

$response = $client->authrep("app id", "app key", new ThreeScaleClientCredentials("service id", "service token"), array('hits' => 1));

Then call the isSuccess() method on the returned object to see if the authorization was successful:

if ($response->isSuccess()) {
  // All fine, proceeed.
} else {
  // Something's wrong with this app.
}

If both provider and app id are valid, the response object contains additional information about the status of the application:

//Returns the name of the plan the application is signed up to.
$response->getPlan()

You can also use other patterns such as user_key mode during the authrep call

$response = $client->authrep_with_user_key("user_key", new ThreeScaleClientCredentials("service id", "service token"), array('hits' => 1));

To report usage, use the report method. You can report multiple transaction at the same time:

$response = $client->report(array(
      array('app_id' => "first app's id",'usage' => array('hits' => 1)),
      array('app_id' => "second app's id", 'usage' => array('hits' => 1))), new ThreeScaleClientCredentials("service id", "service token"));

The "app_id", "usage" parameters are required alongiwth service id and service token. Additionaly, you can specify a timestamp of the transaction:

$response = $client->report(array(
  array('app_id'    => "app's id",
        'usage'     => array('hits' => 1),
        'timestamp' => mktime(12, 36, 0, 4, 28, 2010, new ThreeScaleClientCredentials("service id", "service token")));

The timestamp can be either an unix timestamp (as integer) or a string. The string has to be in a format parseable by the strtotime function. For example:

"2010-04-28 12:38:33 +0200"

If the timestamp is not in UTC, you have to specify a time offset. That's the "+0200" (two hours ahead of the Universal Coordinate Time) in the example above.

Then call the isSuccess() method on the returned response object to see if the report was successful:

if ($response->isSuccess()) {
  // All OK.
} else {
  // There was an error.
}

In case of error, the getErrorCode() returns system error code and getErrorMessage() human readable error description:

$response->getErrorCode()    // "provider_key_invalid"
$response->getErrorMessage() // "provider key \"foo\" is invalid"

The default URI used for the 3scale Service Management API is http://su1.3scale.net:80. This value can be changed, which is useful when the plugin is used together with the on-premise version of the Red Hat 3scale API Management Platform.

In order to override the URL, pass the custom URI while creating instance an instance of the client

$client = new ThreeScaleClient(null, "http://custom-backend.example.com:8080");

If you are interested in integrating the plugin with:

• Composer check the packagist. This is kindly maintained by daws.ca tech team.

• Symphony2 check tonivdv's 3scaleBundle. This is kindly maintained by Adlogix tech team.

To run tests: php test/all.php

Copyright (c) 2010 3scale networks S.L., released under the MIT license.