php使用Elasticsearch之批量操作（bulk）

左手的ㄟ右手 2022-07-03 16:59 358阅读 0赞

**Elasticsearch的批量操作就像 mget 允许我们一次性检索多个文档一样， bulk API允许我们使用单一请求来实现多个文档****的 create 、 index 、 update 或 delete 。这对索引类似于日志活动这样的数据流非常有用，它们可以以成百上千的数据为一** **个批次按序进行索引。**

<table>  批量操作的行为(action)必须是以下几种：  
 <tbody> 
  <tr> 
   <th><span style="font-size:14px; white-space:nowrap">行为</span></th> 
   <th><span style="font-size:14px; white-space:nowrap">解释</span></th> 
  </tr> 
 </tbody> 
 <tbody> 
  <tr> 
   <td><span style="font-size:14px; white-space:nowrap">create</span></td> 
   <td><span style="font-size:14px; white-space:nowrap">当文档不存在时创建之。</span></td> 
  </tr> 
  <tr> 
   <td><span style="font-size:14px; white-space:nowrap">index</span></td> 
   <td><span style="font-size:14px; white-space:nowrap">创建新文档或替换已有文档。</span></td> 
  </tr> 
  <tr> 
   <td><span style="font-size:14px; white-space:nowrap">update</span></td> 
   <td><span style="font-size:14px; white-space:nowrap">局部更新文档。</span></td> 
  </tr> 
  <tr> 
   <td><span style="font-size:14px; white-space:nowrap">delete</span></td> 
   <td><span style="font-size:14px; white-space:nowrap">删除一个文档。</span></td> 
  </tr> 
 </tbody> 
</table>

注意： **在索引、创建、更新或删除时必须指定文档的 \_index 、 \_type 、 \_id 、（如果设置了routing，也必须指定）这些元数据**

**创建一个例子索引的mapping如下：**

$mapping = [
        'index' => 'my_index',
        'body' => [
            'mappings' => [
                'my_type' => [
                    '_all' => [
                        'enabled' => 'false'
                    ],
                    '_routing' => [   #设置routing（分片路由）
                        'required' => 'true'
                    ],
                    'properties' => [
                        'name' => [
                            'type' => 'string',
                        ],
                        'age' => [
                            'type' => 'integer'
                        ]
                    ]
                ]
            ]
        ]
    ];
    $client = Elasticsearch\ClientBuilder::create()->setHosts(['127.0.0.1:9200'])->build();
    $res = $client->indices()->create($mapping);

**批量执行创建文档例子**

$params['body'] = [];
    $nameArr = ['赵','钱','孙','李','周','吴','郑','王'];
    for ($i = 1; $i <= 100; $i++) {
        $params['body'][] = [
            'create' => [   #创建
                '_index' => 'my_index',
                '_type' => 'my_type',
                '_id' => $i,
                '_routing' => mt_rand(1,100),
            ]
        ];
        $params['body'][] = [
            'name' => $nameArr[mt_rand(0,7)],
            'age' => mt_rand(18,60)
        ];
    }
    $client = Elasticsearch\ClientBuilder::create()->setHosts(['127.0.0.1:9200'])->build();
    $res = $client->bulk($params);

**批量执行更新文档操作例子**

//查找指定文档
    $client = Elasticsearch\ClientBuilder::create()->setHosts(['127.0.0.1:9200'])->build();
    $params = [
    	'index' => 'my_index',
    	'type' => 'my_type',
    	'body' => [
    	    'query' => [
    	        'bool' => [
    	            'must' => [
    	                'range' => [
    	                    'age' => [
    	                        'gt' => '25',
    	                        'lt' => '40'
    	                    ]
    	                ]
    	            ]
    	        ]
    	    ],
    	    'from' => 0,
    	    'size' => 100,
    	    'sort' => [
    	    	'age' => 'desc'
    	    ]
    	]
    ];
    $info = $client->search($params);
    $data = $info['hits']['hits'];
    
    // 批量执行更新文档
    $params['body'] = [];
    $nameArr = ['赵','钱','孙','李','周','吴','郑','王'];
    foreach ($data as $key => $value) {
    	$params['body'][] = [
            'update' => [   #更新文档
                '_index' => $value['_index'],
                '_type' => $value['_type'],
                '_id' => $value['_id'],
                '_routing' => $value['_routing'],
            ]
        ];
        $params['body'][] = [
        	'doc' => [  #更新指定的字段值
            	'name' => $nameArr[mt_rand(0,7)].$nameArr[mt_rand(0,7)]
            ]
        ];
    }
    $res = $client->bulk($params);

**增删改批量执行操作例子**

$params['body'] = [];
    
    //创建或替换文档操作
    $params['body'][] = [
        'index' => [   #创建或替换
            '_index' => 'my_index',
            '_type' => 'my_type',
            '_id' => 1,
            '_routing' => 1,
        ]
    ];
    $params['body'][] = [
        'name' => '杨',
        'age' => 23
    ];
    
    //创建文档操作
    $params['body'][] = [
        'create' => [   #创建
            '_index' => 'my_index',
            '_type' => 'my_type',
            '_id' => 2,
            '_routing' => 2,
        ]
    ];
    $params['body'][] = [
        'name' => '郭',
        'age' => 19
    ];
    
    //局部更新文档操作
    $params['body'][] = [
        'update' => [   #局部更新
            '_index' => 'my_index',
            '_type' => 'my_type',
            '_id' => 3,
            '_routing' => 3,
        ]
    ];
    $params['body'][] = [
    	'doc' => [
        	'age' => 19
        ]
    ];
    
    //删除文档操作
    $params['body'][] = [
        'delete' => [   #删除
            '_index' => 'my_index',
            '_type' => 'my_type',
            '_id' => 4,
            '_routing' => 4,
        ]
    ];
    $client = Elasticsearch\ClientBuilder::create()->setHosts(['127.0.0.1:9200'])->build();
    $res = $client->bulk($params);