php通過thrift操作hbase

        項目要求實現php讀寫hbase，調查發現中間件爲thrift，參考了文章http://www.cnblogs.com/scotoma/archive/2013/05/16/3081236.html，老實講幫助很大，總算按時完成了這些任務。

       本地安裝了php和hbase，網上很多教程安裝thrift，安裝後將thrift目錄下./lib/php目錄複製到web目錄下，我的web目錄是/usr/local/apache2/htdocs，接着生成thrift和hbase的接口文件，這裏產生了很大的誤區，開始參考以爲Hbase.thrift是通過命令生成的文件，走了很多彎路。後面其實是--gen命令利用Hbase.thrift生成目錄文件，具體可以參考到官方網站上https://thrift.apache.org/tutorial/php，這也給我提了很大的醒，還是要多關注官方網站的寫法。這次虛擬機是直接拷貝的別人，裏面沒有Hbase.thrift文件，思考之後因爲hbase安裝使用的是二進制安裝，最後在hbase源碼裏找到了Hbase.thrift文件。

    thrift -r --gen php Hbase.thrift

        生成的Hbase目錄文件裏會有Hbase.php和Types.php文件，後面會用到。

         

        查看都hbase啓動成功，便開始了代碼測試，路徑都要每一個對準，檢查每一個class文件是否對應成功。

<?php  
  
use Thrift\Transport\TSocket;
use Thrift\Transport\TSocketPool;
use Thrift\Transport\TFramedTransport;
use Thrift\Transport\TBufferedTransport;
use Thrift\Protocol\TBinaryProtocol;
use HBase\HBaseClient;

ini_set('display_errors', E_ALL);  
$GLOBALS['THRIFT_ROOT'] = './php/src/Thrift';  
  
require_once( $GLOBALS['THRIFT_ROOT'] . '/Thrift.php' );  
require_once( $GLOBALS['THRIFT_ROOT'] . '/transport/TSocket.php' ); 
require_once( $GLOBALS['THRIFT_ROOT'] . '/transport/TTransport.php' );
require_once( $GLOBALS['THRIFT_ROOT'] . '/transport/TBufferedTransport.php' );  
require_once( $GLOBALS['THRIFT_ROOT'] . '/protocol/TProtocol.php' );  
require_once( $GLOBALS['THRIFT_ROOT'] . '/protocol/TBinaryProtocol.php' );
//require_once( $GLOBALS['THRIFT_ROOT'] . '/packages/Hbase/Hbase.php' );  
require_once( $GLOBALS['THRIFT_ROOT'] . '/Type/TMessageType.php' );
require_once( $GLOBALS['THRIFT_ROOT'] . '/Factory/TStringFuncFactory.php' ); 
require_once( $GLOBALS['THRIFT_ROOT'] . '/StringFunc/TStringFunc.php' ); 
require_once( $GLOBALS['THRIFT_ROOT'] . '/StringFunc/Core.php' ); 
require_once( $GLOBALS['THRIFT_ROOT'] . '/Type/TType.php' ); 
require_once( $GLOBALS['THRIFT_ROOT'] . '/Exception/TException.php' );
require_once( $GLOBALS['THRIFT_ROOT'] . '/Exception/TTransportException.php' );
require_once( $GLOBALS['THRIFT_ROOT'] . '/Exception/TProtocolException.php' );
  
require_once $GLOBALS['THRIFT_ROOT'].'/Types.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Hbase.php';

$socket = new TSocket('localhost', '9090');  
  
$socket->setSendTimeout(10000); // Ten seconds (too long for production, but this is just a demo ;)  
$socket->setRecvTimeout(20000); // Twenty seconds  
$transport = new TBufferedTransport($socket);  
$protocol = new TBinaryProtocol($transport);  
$client = new HbaseClient($protocol);  

$transport->open(); 
echo nl2br( "listing tables...\n" );
$tables = $client->getTableNames();
sort($tables);  
foreach ($tables as $name) {  
  
    echo( "  found: {$name}\n" );  
}

$columns = array(  
    new \Hbase\ColumnDescriptor(array(  
        'name' => 'id:',  
        'maxVersions' => 10  
    )),  
    new \Hbase\ColumnDescriptor(array(  
        'name' => 'name:'  
    )),  
    new \Hbase\ColumnDescriptor(array(  
        'name' => 'score:'  
    )),  
);  
  
$tableName = "student";  
/*
try {  
    $client->createTable($tableName, $columns);  
} catch (AlreadyExists $ae) {  
    echo( "WARN: {$ae->message}\n" );  
}
*/

  
$descriptors = $client->getColumnDescriptors($tableName);  
asort($descriptors);  
foreach ($descriptors as $col) {  
    echo( "  column: {$col->name}, maxVer: {$col->maxVersions}\n" );  
}

$time = time();
 
var_dump($time);
 
$row = '2';
$valid = "foobar-".$time;
 
 
 
$mutations = array(
    new \Hbase\Mutation(array(
            'column' => 'score',
            'value' => $valid
        )),
);
 
 
$mutations1 = array(
    new \Hbase\Mutation(array(
            'column' => 'score:a',
            'value' => $time,
        )),
);
 
 
$attributes = array (
 
);
$row1 = $time;
$client->mutateRow($tableName, $row1, $mutations1, $attributes);
 
echo "-------write row $row1 ---\r\n";
$client->mutateRow($tableName, $row, $mutations, $attributes);

$row_name = $time;
$fam_col_name = 'score:a';
$arr = $client->get($tableName, $row_name, $fam_col_name, $attributes);

foreach ($arr as $k => $v) {
    // $k = TCell
    echo " ------ get one : value = {$v->value} , <br>  ";
    echo " ------ get one : timestamp = {$v->timestamp}  <br>";
}
 
echo "----------\r\n";
 
$arr = $client->getRow($tableName, $row_name, $attributes);
// $client->getRow return a array
foreach ($arr as $k => $TRowResult) {
    // $k = 0 ; non-use
    // $TRowResult = TRowResult
    var_dump($TRowResult);
}
 
 
echo "----------\r\n";

echo "----scanner get ------\r\n";
$startRow = '1';
$columns = array ('column' => 'score', );
 
 
//
 
$scan = $client->scannerOpen($tableName, $startRow, $columns, $attributes);

$nbRows = 1000;
 
$arr = $client->scannerGetList($scan, $nbRows);
 
var_dump('count of result :'.count($arr));
 
foreach ($arr as $k => $TRowResult) {
    // code...
    //var_dump($TRowResult);
}
 
$client->scannerClose($scan);

$transport->close(); 
?>  

        效果如下圖所示

       此時php讀寫hbase成功，個人覺得其中的問題主要出在命名空間上，需要很注意namespace和use的使用，不能漏掉任何一個可用的。