mysql - Logstash - 从关系数据库组创建术语

Question

我在 MySQL 中有一个表，我想将其导入 Elasticsearch

作为示例，数据如下所示

team   buyer
====   ======
one    Q76876
one    Q66567
one    T99898
two    Q45456
two    S77676

我想使用logstash将其导入elasticsearch并创建一个如下所示的索引

{
  "id": "one",
  "team": one,
  "buyers": ["Q76876", "Q66567", "T99898"]
},
{
  "id": "two",
  "team": "two",
  "buyers": ["Q45456", "S77676"]
}

我将如何编写 .conf 脚本来实现此目的？

Answer 1

Logstash 将事件放入索引中，除非您应用一些过滤器。你的情况看起来很简单。如果您将 sql 查询格式化为以您需要的格式返回数据，那么您不需要应用任何过滤器，只需连接数据库和 sql 查询即可在logstash 配置中运行，并将输出作为 Elasticsearch 索引。

例如:

MySql 查询看起来像这样:(我不擅长 mysql，下面只是给出一个想法 - 请验证它是否有效)

SELECT team as id, 
       team, 
       GROUP_CONCAT(DISTINCT buyer SEPARATOR ', ') as buyers
FROM tablename GROUP BY team

这将返回类似以下内容:

+-----+------+------------------------+
| id  | team |         buyers         |
+-----+------+------------------------+
| one | one  | Q76876, Q66567, T99898 |
| two | two  | Q45456, S77676         |
+-----+------+------------------------+

logstash 配置看起来就像:

input {
  jdbc {
     jdbc_driver_library => "${DATABASE_DRIVER_PATH}"
     jdbc_driver_class => "${DATABASE_DRIVER_PATH}"
     jdbc_connection_string => "{CONNECTIONSTRING}"
     jdbc_user => "${DATABASE_USERNAME}"
     jdbc_password => "${DATABASE_PASSWORD}"
     statement_filepath => "${LOGSTASH_SQL_FILEPATH}" #this will be the sql written above
  }
}

filter {
}

output {
    elasticsearch {
        action => "index"       
        hosts => ["${ELASTICSEARCH_HOST}"]
        user => "${ELASTICSEARCH_USER}"
        password => "${ELASTICSEARCH_PASSWORD}"
        index => "${INDEX_NAME}"       
        document_type => "doc"                      
        document_id => "%{id}"       
    }
    stdout { codec => rubydebug }
    stdout { codec => dots }
}