Added IPv4 aggregation

Aggregation/Ipv4RangeAggregation.php

+<?php
+
+/*
+ * This file is part of the ONGR package.
+ *
+ * (c) NFQ Technologies UAB <info@nfq.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace ONGR\ElasticsearchBundle\DSL\Aggregation;
+
+use ONGR\ElasticsearchBundle\DSL\Aggregation\Type\BucketingTrait;
+
+/**
+ * Class representing ip range aggregation.
+ */
+class Ipv4RangeAggregation extends AbstractAggregation
+{
+    use BucketingTrait;
+
+    /**
+     * @var array
+     */
+    private $ranges = [];
+
+    /**
+     * Add range to aggregation.
+     *
+     * @param string|null $from
+     * @param string|null $to
+     *
+     * @return Ipv4RangeAggregation
+     */
+    public function addRange($from = null, $to = null)
+    {
+        $range = array_filter(
+            [
+                'from' => $from,
+                'to' => $to,
+            ]
+        );
+
+        $this->ranges[] = $range;
+
+        return $this;
+    }
+
+    /**
+     * Add ip mask to aggregation.
+     *
+     * @param string $mask
+     *
+     * @return Ipv4RangeAggregation
+     */
+    public function addMask($mask)
+    {
+        $this->ranges[] = ['mask' => $mask];
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'ip_range';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getArray()
+    {
+        if ($this->getField() && $this->ranges) {
+            return [
+                'field' => $this->getField(),
+                'ranges' => array_values($this->ranges),
+            ];
+        }
+        throw new \LogicException('Ip range aggregation must have field set and range added.');
+    }
+}