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msd2/tracking/piwik/plugins/SEO/Metric/Aggregator.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Plugins\SEO\Metric;
+
+use Piwik\Container\StaticContainer;
+use Piwik\Metrics\Formatter;
+use Piwik\Piwik;
+
+/**
+ * Aggregates metrics from several providers.
+ */
+class Aggregator implements MetricsProvider
+{
+    /**
+     * @var MetricsProvider[]
+     */
+    private $providers;
+
+    public function __construct()
+    {
+        $this->providers = $this->getProviders();
+    }
+
+    public function getMetrics($domain)
+    {
+        $metrics = array();
+
+        foreach ($this->providers as $provider) {
+            $metrics = array_merge($metrics, $provider->getMetrics($domain));
+        }
+
+        return $metrics;
+    }
+
+    /**
+     * @return MetricsProvider[]
+     */
+    private function getProviders()
+    {
+        $container = StaticContainer::getContainer();
+
+        $providers = array(
+            $container->get('Piwik\Plugins\SEO\Metric\Google'),
+            $container->get('Piwik\Plugins\SEO\Metric\Bing'),
+            $container->get('Piwik\Plugins\SEO\Metric\Alexa'),
+            $container->get('Piwik\Plugins\SEO\Metric\DomainAge'),
+        );
+
+        /**
+         * Use this event to register new SEO metrics providers.
+         *
+         * @param array $providers Contains an array of Piwik\Plugins\SEO\Metric\MetricsProvider instances.
+         */
+        Piwik::postEvent('SEO.getMetricsProviders', array(&$providers));
+
+        return $providers;
+    }
+}