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Mr·x
2020-10-09 10:58:37 +08:00
parent 8147a57fa0
commit c4bde06838
37 changed files with 7920 additions and 2 deletions
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Kafka/Protocol/CommitOffset.php
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<?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 commit offset api
+------------------------------------------------------------------------------
*
* @package
* @version $_SWANBR_VERSION_$
* @copyright Copyleft
* @author $_SWANBR_AUTHOR_$
+------------------------------------------------------------------------------
*/
class CommitOffset extends Protocol
{
// {{{ functions
// {{{ public function encode()
/**
* commit offset request encode
*
* @param array $payloads
* @access public
* @return string
*/
public function encode($payloads)
{
if (!isset($payloads['group_id'])) {
throw new \Kafka\Exception\Protocol('given commit offset data invalid. `group_id` is undefined.');
}
if (!isset($payloads['data'])) {
throw new \Kafka\Exception\Protocol('given commit data invalid. `data` is undefined.');
}
if (!isset($payloads['generation_id'])) {
$payloads['generation_id'] = -1;
}
if (!isset($payloads['member_id'])) {
$payloads['member_id'] = '';
}
if (!isset($payloads['retention_time'])) {
$payloads['retention_time'] = -1;
}
$version = $this->getApiVersion(self::OFFSET_COMMIT_REQUEST);
$header = $this->requestHeader('kafka-php', self::OFFSET_COMMIT_REQUEST, self::OFFSET_COMMIT_REQUEST);
$data = self::encodeString($payloads['group_id'], self::PACK_INT16);
if ($version == self::API_VERSION1) {
$data .= self::pack(self::BIT_B32, $payloads['generation_id']);
$data .= self::encodeString($payloads['member_id'], self::PACK_INT16);
}
if ($version == self::API_VERSION2) {
$data .= self::pack(self::BIT_B32, $payloads['generation_id']);
$data .= self::encodeString($payloads['member_id'], self::PACK_INT16);
$data .= self::pack(self::BIT_B64, $payloads['retention_time']);
}
$data .= self::encodeArray($payloads['data'], array($this, 'encodeTopic'));
$data = self::encodeString($header . $data, self::PACK_INT32);
return $data;
}
// }}}
// {{{ public function decode()
/**
* decode group response
*
* @access public
* @return array
*/
public function decode($data)
{
$offset = 0;
$version = $this->getApiVersion(self::OFFSET_REQUEST);
$topics = $this->decodeArray(substr($data, $offset), array($this, 'decodeTopic'), $version);
$offset += $topics['length'];
return $topics['data'];
}
// }}}
// {{{ protected function encodeTopic()
/**
* encode commit offset topic array
*
* @param array $values
* @access public
* @return array
*/
protected function encodeTopic($values)
{
if (!isset($values['topic_name'])) {
throw new \Kafka\Exception\Protocol('given commit offset data invalid. `topic_name` is undefined.');
}
if (!isset($values['partitions'])) {
throw new \Kafka\Exception\Protocol('given commit offset data invalid. `partitions` is undefined.');
}
$data = self::encodeString($values['topic_name'], self::PACK_INT16);
$data .= self::encodeArray($values['partitions'], array($this, 'encodePartition'));
return $data;
}
// }}}
// {{{ protected function encodePartition()
/**
* encode commit offset partition array
*
* @param array $values
* @access public
* @return array
*/
protected function encodePartition($values)
{
if (!isset($values['partition'])) {
throw new \Kafka\Exception\Protocol('given commit offset data invalid. `partition` is undefined.');
}
if (!isset($values['offset'])) {
throw new \Kafka\Exception\Protocol('given commit offset data invalid. `offset` is undefined.');
}
if (!isset($values['metadata'])) {
$values['metadata'] = '';
}
if (!isset($values['timestamp'])) {
$values['timestamp'] = time() * 1000;
}
$version = $this->getApiVersion(self::OFFSET_COMMIT_REQUEST);
$data = self::pack(self::BIT_B32, $values['partition']);
$data .= self::pack(self::BIT_B64, $values['offset']);
if ($version == self::API_VERSION1) {
$data .= self::pack(self::BIT_B64, $values['timestamp']);
}
$data .= self::encodeString($values['metadata'], self::PACK_INT16);
return $data;
}
// }}}
// {{{ protected function decodeTopic()
/**
* decode commit offset topic response
*
* @param byte[] $data
* @param string $version
* @access protected
* @return array
*/
protected function decodeTopic($data, $version)
{
$offset = 0;
$topicInfo = $this->decodeString(substr($data, $offset), self::BIT_B16);
$offset += $topicInfo['length'];
$partitions = $this->decodeArray(substr($data, $offset), array($this, 'decodePartition'), $version);
$offset += $partitions['length'];
return array(
'length' => $offset,
'data' => array(
'topicName' => $topicInfo['data'],
'partitions' => $partitions['data'],
)
);
}
// }}}
// {{{ protected function decodePartition()
/**
* decode commit offset partition response
*
* @param byte[] $data
* @param string $version
* @access protected
* @return array
*/
protected function decodePartition($data, $version)
{
$offset = 0;
$partitionId = self::unpack(self::BIT_B32, substr($data, $offset, 4));
$offset += 4;
$errorCode = self::unpack(self::BIT_B16_SIGNED, substr($data, $offset, 2));
$offset += 2;
return array(
'length' => $offset,
'data' => array(
'partition' => $partitionId,
'errorCode' => $errorCode,
)
);
}
// }}}
// }}}
}