ruby 为fluentd创建正则表达式模式

ohfgkhjo 于 2022-11-04 发布在 Ruby

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我使用Fluentd配置和regexp解析器来解析日志。
这是我在fluentd的原始日志：

2022-09-22 18:15:09,633 [springHikariCP housekeeper    ] DEBUG HikariPool                     - springHikariCP - Fill pool skipped, pool is at sufficient level.
2022-09-22 18:15:14,968 [ringHikariCP connection closer] DEBUG PoolBase                       - springHikariCP - Closing connection com.mysql.cj.jdbc.ConnectionImpl@7f535ea4: (connection has passed maxLifetime)

我想使用regexp为上述日志创建json格式，如下所示：

{
    "logtime": "2022-09-22 18:15:09,633",
    "Logger Name": "[springHikariCP housekeeper    ]",
    "Log level": "DEBUG",
    "message": "HikariPool                     - springHikariCP - Fill pool skipped, pool is at sufficient level"
}

{
    "logtime": "2022-09-22 18:15:09,633",
    "Logger Name": "[ringHikariCP connection closer]",
    "Log level": "DEBUG",
    "message": "PoolBase                       - springHikariCP - Closing connectioncom.mysql.cj.jdbc.ConnectionImpl@7f535ea4: (connection has passed maxLifetime)"
}

有Ruby经验的人可以帮助我为上面的日志创建Ruby正则表达式吗

ruby

来源：https://stackoverflow.com/questions/73820128/create-regex-pattern-for-fluentd

1条答案

按热度按时间

ryevplcw1#

正则表达式应该简单明了，例如：

(?'logtime'\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2},\d{3})\s(?'logname'\[[^\]]*\])\s(?'loglevel'\w+)\s(?'message'.*)

Online Test
然后，使用替换（gsub，请参见下面的示例）或将这些部分组合成一个新字符串（match）来重新组合这些部分：

re = /(?'logtime'\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2},\d{3})\s(?'logname'\[[^\]]*\])\s(?'loglevel'\w+)\s(?'message'.*?$)/m
str = '2022-09-22 18:15:09,633 [springHikariCP housekeeper    ] DEBUG HikariPool                     - springHikariCP - Fill pool skipped, pool is at sufficient level.
2022-09-22 18:15:14,968 [ringHikariCP connection closer] DEBUG PoolBase                       - springHikariCP - Closing connection com.mysql.cj.jdbc.ConnectionImpl@7f535ea4: (connection has passed maxLifetime)'

str.gsub(re) do |match|
  puts "{
    \"logtime\": \"#{$~[:logtime]}\",
    \"Logger Name\": \"#{$~[:logname]}\",
    \"Log level\": \"#{$~[:loglevel]}\",
    \"message\": \"#{$~[:message]}\"
}"
end

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ruby 为fluentd创建正则表达式模式

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