改名

2020-10-09 10:58:37 +08:00
parent 8147a57fa0
commit c4bde06838
37 changed files with 7920 additions and 2 deletions
@@ -0,0 +1,179 @@
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */
+// +---------------------------------------------------------------------------
+// | SWAN [ $_SWANBR_SLOGAN_$ ]
+// +---------------------------------------------------------------------------
+// | Copyright $_SWANBR_COPYRIGHT_$
+// +---------------------------------------------------------------------------
+// | Version  $_SWANBR_VERSION_$
+// +---------------------------------------------------------------------------
+// | Licensed ( $_SWANBR_LICENSED_URL_$ )
+// +---------------------------------------------------------------------------
+// | $_SWANBR_WEB_DOMAIN_$
+// +---------------------------------------------------------------------------
+
+namespace Kafka\Protocol;
+
+/**
+------------------------------------------------------------------------------
+* Kafka protocol for meta data api
+------------------------------------------------------------------------------
+*
+* @package
+* @version $_SWANBR_VERSION_$
+* @copyright Copyleft
+* @author $_SWANBR_AUTHOR_$
+------------------------------------------------------------------------------
+*/
+
+class Metadata extends Protocol
+{
+    // {{{ functions
+    // {{{ public function encode()
+
+    /**
+     * meta data request encode
+     *
+     * @param array $payloads
+     * @access public
+     * @return string
+     */
+    public function encode($topics)
+    {
+        if (!is_array($topics)) {
+            $topics = array($topics);
+        }
+
+        foreach ($topics as $topic) {
+            if (!is_string($topic)) {
+                throw new \Kafka\Exception\Protocol('request metadata topic array have invalid value. ');
+            }
+        }
+
+        $header = $this->requestHeader('kafka-php', self::METADATA_REQUEST, self::METADATA_REQUEST);
+        $data   = self::encodeArray($topics, array($this, 'encodeString'), self::PACK_INT16);
+        $data   = self::encodeString($header . $data, self::PACK_INT32);
+
+        return $data;
+    }
+
+    // }}}
+    // {{{ public function decode()
+
+    /**
+     * decode metadata response
+     *
+     * @access public
+     * @return array
+     */
+    public function decode($data)
+    {
+        $offset = 0;
+        $version = $this->getApiVersion(self::METADATA_REQUEST);
+        $brokerRet = $this->decodeArray(substr($data, $offset), array($this, 'metaBroker'), $version);
+        $offset += $brokerRet['length'];
+        $topicMetaRet = $this->decodeArray(substr($data, $offset), array($this, 'metaTopicMetaData'), $version);
+        $offset += $topicMetaRet['length'];
+
+        $result = array(
+            'brokers' => $brokerRet['data'],
+            'topics'  => $topicMetaRet['data'],
+        );
+        return $result;
+    }
+
+    // }}}
+    // {{{ protected function metaBroker()
+
+    /**
+     * decode meta broker response
+     *
+     * @access protected
+     * @return array
+     */
+    protected function metaBroker($data, $version)
+    {
+        $offset = 0;
+        $nodeId = self::unpack(self::BIT_B32, substr($data, $offset, 4));
+        $offset += 4;
+        $hostNameInfo = $this->decodeString(substr($data, $offset), self::BIT_B16);
+        $offset += $hostNameInfo['length'];
+        $port = self::unpack(self::BIT_B32, substr($data, $offset, 4));
+        $offset += 4;
+        return array(
+            'length' => $offset,
+            'data' => array(
+                'host' => $hostNameInfo['data'],
+                'port' => $port,
+                'nodeId' => $nodeId
+            )
+        );
+    }
+
+    // }}}
+    // {{{ protected function metaTopicMetaData()
+
+    /**
+     * decode meta topic meta data response
+     *
+     * @access protected
+     * @return array
+     */
+    protected function metaTopicMetaData($data, $version)
+    {
+        $offset = 0;
+        $topicErrCode = self::unpack(self::BIT_B16_SIGNED, substr($data, $offset, 2));
+        $offset += 2;
+        $topicInfo = $this->decodeString(substr($data, $offset), self::BIT_B16);
+        $offset += $topicInfo['length'];
+        $partionsMetaRet = $this->decodeArray(substr($data, $offset), array($this, 'metaPartitionMetaData'), $version);
+        $offset += $partionsMetaRet['length'];
+
+        return array(
+            'length' => $offset,
+            'data' => array(
+                'topicName' => $topicInfo['data'],
+                'errorCode' => $topicErrCode,
+                'partitions' => $partionsMetaRet['data'],
+            )
+        );
+    }
+
+    // }}}
+    // {{{ protected function metaPartitionMetaData()
+
+    /**
+     * decode meta partition meta data response
+     *
+     * @access protected
+     * @return array
+     */
+    protected function metaPartitionMetaData($data, $version)
+    {
+        $offset = 0;
+        $errcode = self::unpack(self::BIT_B16_SIGNED, substr($data, $offset, 2));
+        $offset += 2;
+        $partId = self::unpack(self::BIT_B32, substr($data, $offset, 4));
+        $offset += 4;
+        $leader = self::unpack(self::BIT_B32, substr($data, $offset, 4));
+        $offset += 4;
+        $replicas = $this->decodePrimitiveArray(substr($data, $offset), self::BIT_B32);
+        $offset += $replicas['length'];
+        $isr = $this->decodePrimitiveArray(substr($data, $offset), self::BIT_B32);
+        $offset += $isr['length'];
+
+        return array(
+            'length' => $offset,
+            'data' => array(
+                'partitionId' => $partId,
+                'errorCode' => $errcode,
+                'replicas' => $replicas['data'],
+                'leader' => $leader,
+                'isr' => $isr['data'],
+            )
+        );
+    }
+
+    // }}}
+    // }}}
+}