logstash 增量同步mysql的一对多记录到ES的Join

2020-08-05  本文已影响0人  觉释

mysql 数据模型

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CREATE DATABASE IF NOT EXISTS esdatabase DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

CREATE TABLE `brand` (
  `ability_id`  int auto_increment NOT NULL,
  `brand_name` varchar(128) DEFAULT NULL,
  PRIMARY KEY (`ability_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE `product` (
  `product_id`  int auto_increment NOT NULL,
  `brand_name` varchar(128) DEFAULT NULL,
  `product_name` varchar(128) DEFAULT NULL,
  `product_price`   float(5,2)  DEFAULT NULL,
  `product_color` varchar(128) DEFAULT NULL,
  PRIMARY KEY (`product_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

product 表没有创建外键。这里还是看个人观点吧,添加外键有可能影响性能,但是需要应用维护一致性。总之,要维护product和brand的一致性。

insert brand(brand_name) value ('Nike'),('Address'),('360');
insert product(brand_name,product_name,product_price,product_color) value ('1','shoe',31,'red'),('1','cloth',32,'green'),('1','trouser',55,'black');
insert product(brand_name,product_name,product_price,product_color) value ('3','shoe',11,'white'),('3','cloth',32,'green'),('3','trouser',18,'pink');
insert product(brand_name,product_name,product_price,product_color) value ('4','shoe',111,'red'),('4','cloth',132,'purple'),('4','trouser',155,'black');

ES 创建索引

http://x.x.x.x:9200/testjon

{
  "mappings": {
    "doc": {
      "dynamic": "strict",
      "properties": {
        "type": {
          "type": "text"
        },
         "ability_id": {
          "type": "integer"
        },
         "product_id": {
          "type": "integer"
        },
                "brand_name": {
          "type": "integer"
        },
        "brand_name": {
          "type": "text"
        },
        "product_name": {
          "type": "text"
        },
        "product_price": {
          "type": "float"
        },
        "product_color": {
          "type": "text"
        },
        "product_list": {
          "type": "join",
          "relations": {
            "brand": "product"
          }
        }
      }
    }
  }
}

type ability_id product_id brand_name 字段其实没有什么用途,我是被迫添加的。
因为output阶段需要使用这些字段,所以不能再filter阶段删除掉,但是output阶段又没有删除字段的功能
这个问题困惑着我,还请各位大神指点一下。。。。

logstash 配置文件

logstash 用了jdbc和alter两个插件,要是大家不方便安装的话,QQ群里有我安装好的tar包,QQ群号在底部。

input {
    jdbc {
      type => "brand"
      jdbc_connection_string => "jdbc:mysql://1.1.1.1:3306/esdatabase" 
      jdbc_user => "esuser"    
      jdbc_password => "123.com"
      jdbc_driver_library => "/app/logstash/mysql-connector-java-5.1.47.jar"
      jdbc_driver_class => "com.mysql.jdbc.Driver"
      jdbc_paging_enabled => "true"
      jdbc_page_size => "1000"
      last_run_metadata_path => "/app/logstash/logstash_jdbc_last_run"
      use_column_value => true
      tracking_column => "ability_id"
      statement => "select * from brand where ability_id> :sql_last_value"
      schedule => "*/1 * * * *"
    }

    jdbc {
      type => "product"
      jdbc_connection_string => "jdbc:mysql://1.1.1.1::3306/esdatabase" 
      jdbc_user => "esuser"    
      jdbc_password => "123.com"
      jdbc_driver_library =>  "/app/logstash/mysql-connector-java-5.1.47.jar"
      jdbc_driver_class => "com.mysql.jdbc.Driver"
      last_run_metadata_path => "/app/logstash/logstash_jdbc_last_run_02"
      use_column_value => true
      tracking_column => "product_id"
      jdbc_paging_enabled => "true"
      jdbc_page_size => "1000"
      statement => " select * from product where product_id >  :sql_last_value"
      schedule => "*/2 * * * *"
    }
}
filter {
        if[type] == "brand"{
                  alter {
                    add_field  => {
                          "[product_list][name]"=> "brand"
                    }
                  }
        }
        if[type] == "product"{
                  alter {
                    add_field  => {
                         "[product_list][name]" => "product"
                         "[product_list][parent]" =>  "%{brand_name}"
                    }
                  }
        }
         mutate {
            remove_field => [ "@timestamp","@version"]
          }
}
output{ 
        if [type] == "brand" { 
                elasticsearch { 
                        hosts => "1.1.1.1::9200" 
                        index => "testjoin" 
                        document_id => "brand_%{ability_id}"
                } 
        }
        if [type]== "product"  { 
                        elasticsearch { 
                                hosts => "1.1.1.1::9200" 
                                index => "testjoin" 
                                document_id => "product_%{product_id}"
                                routing => "brand_%{brand_name}"
                                  } 
                                } 
     } 

说几点

查看结果

启动logstash

logstash -f  testJoin.yml

观察ES结果
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插入几条数据,看看是不是增量
insert brand(brand_name) value ('lining');
insert product(brand_name,product_name,product_price,product_color) value ('1','shoe',678,'blue');
 insert product(brand_name,product_name,product_price,product_color) value ('4','shoe',278,'black');

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