Logstash 5.2.2 - 修改值的问题 - 将字符串的添加字段转换为整数

Question

我遇到了logstash 5.2.2过滤器的问题。我需要将字符串转换为整数并且失败。我正在采取的做法可能并不理想。以下是问题陈述： JMX MBean值将“metric_value_string”报告为“XX.X秒”。我希望能够使用此值作为可视化中Kibana聚合的数字。

我已经试了一下：

定义： 源字段是 “metric_value_string”。一个字符串。值看起来像“26.0秒”。 期望的目标字段是“time_in_seconds”。一个整数。

我试着创建一个脚本字段。简单地（无痛）将“metric_value_string”转换为看起来像Kibana发现结果中的数字的数字，可用于在可视化中作为数字进行聚合。当可视化运行时，会发生错误。这是一个强制性异常，它显示“metric_value_string”中的值，而不是我转换后的“time_in_seconds”。这是Kibana 5.2.2。 IDK如果这是一个错误，所以我尝试了另一种方法。

我试着在logstash过滤器中创建并转换一个字段。

我已经试过这两种方法：

filter { 
    if "TimeSince" in [metric_path] or "Delay" in [metric_path] { 
     mutate { add_field => { "time_in_seconds" => "%{metric_value_string}"} } 
     mutate { gsub => ["time_in_seconds", ".0 secs", ""] } 
     mutate { convert => { "time_in_seconds", "integer" } }   
    } 
} 

和

filter { 
    if "TimeSince" in [metric_path] or "Delay" in [metric_path] { 
     ruby { 
      code => 
       "event.set('time_in_seconds', event.get('metric_value_string'))" 
     } 
     mutate { gsub => ["time_in_seconds", ".0 secs", ""] } 
     mutate { convert => { "time_in_seconds", "integer" } }   
    } 
} 

有条件的东西就可以了。当我注释掉

mutate { convert => { "time_in_seconds", "integer" } } 

代码时，它在输出中看起来和预期的一样，并且不会失败。

我不确定是什么原因导致失败。错误说这是一个语法错误，但如果我只是注释掉转换行，那么一切都可以。作为完整性检查，我在gsub行后添加了更多代码，以确保该代码没有问题。

这里的STDOUT从logstash：

C:\Elastic\logstash-5.2.2\bin>cls 

C:\Elastic\logstash-5.2.2\bin>logstash -f config/logstash.conf --config.reload.automatic 
JAVA_OPTS was set to [ -Dlog4j.configurationFile=C:\Elastic\logstash-5.2.2\config\log4j2.properties  -Xmx1g -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=1 -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath="C:\Elastic\logstash-5.2.2/heapdump.hprof"]. Logstash will trust these options, and not set any defaults that it might usually set 
[2017-09-14T14:14:14,056][ERROR][logstash.agent   ] Cannot load an invalid configuration {:reason=>"Expected one of #, => at line 14, column 42 (byte 355) after filter {\n\tif \"TimeSince\" in [metric_path] or \"Delay\" in [metric_path] {\n\t\tmutate { add_field => { \"time_in_seconds\" => \"%{metric_value_string}\"} }\n\t\tmutate { gsub => [\"time_in_seconds\", \".0 secs\", \"\"] }\n\t\tmutate { convert => { \"time_in_seconds\""} 

这里的配置文件的内容从错误上面：

input { 
    jmx { 
     path => "plugins/jmx" 
     polling_frequency => 60 
     type => "jmx" 
     nb_thread => 4 
    } 
} 

filter { 
    if "TimeSince" in [metric_path] or "Delay" in [metric_path] { 
     mutate { add_field => { "time_in_seconds" => "%{metric_value_string}"} } 
     mutate { gsub => ["time_in_seconds", ".0 secs", ""] } 
     mutate { convert => { "time_in_seconds", "integer" } } 
    } 
} 

output { 
    stdout { codec => rubydebug } 
} 

没有问题，如果我注释掉转换线..

上午我以错误的方式去解决这个问题？我更新这个堆栈。如果这是C＃/ SQL，我只是做一个替换+转换/转换。我是否在错误的地方做这件事？

编辑：

这里的时候我注释掉转换线，所以你可以看到实际数据的标准输出：上CONVERT

C:\Elastic\logstash-5.2.2\bin>cls 

C:\Elastic\logstash-5.2.2\bin>logstash -f config/logstash.conf --config.reload.automatic 
JAVA_OPTS was set to [ -Dlog4j.configurationFile=C:\Elastic\logstash-5.2.2\config\log4j2.properties  -Xmx1g -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=1 -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath="C:\Elastic\logstash-5.2.2/heapdump.hprof"]. Logstash will trust these options, and not set any defaults that it might usually set 
[2017-09-14T14:23:13,456][INFO ][logstash.pipeline  ] Starting pipeline {"id"=>"main", "pipeline.workers"=>4, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>5, "pipeline.max_inflight"=>500} 
[2017-09-14T14:23:13,568][INFO ][logstash.inputs.jmx  ] Create queue dispatching JMX requests to threads 
[2017-09-14T14:23:13,573][INFO ][logstash.inputs.jmx  ] Compile regexp for group alias object replacement 
[2017-09-14T14:23:13,574][INFO ][logstash.pipeline  ] Pipeline main started 
[2017-09-14T14:23:13,576][INFO ][logstash.inputs.jmx  ] Initialize 4 threads for JMX metrics collection 
[2017-09-14T14:23:13,648][INFO ][logstash.inputs.jmx  ] Loading configuration files in path {:path=>"plugins/jmx"} 
[2017-09-14T14:23:13,743][INFO ][logstash.agent   ] Successfully started Logstash API endpoint {:port=>9600} 
{ 
        "path" => "plugins/jmx", 
      "environment" => "TEST", 
      "@timestamp" => 2017-09-14T18:23:14.154Z, 
       "@version" => "1", 
        "host" => "MY HOST", 
      "metric_path" => "xxStatus", 
        "type" => "jmx", 
    "metric_value_string" => "idle" 
} 
{ 
        "path" => "plugins/jmx", 
     "time_in_seconds" => "191", 
      "environment" => "TEST", 
      "@timestamp" => 2017-09-14T18:23:14.200Z, 
       "@version" => "1", 
        "host" => "MY HOST", 
      "metric_path" => "xxTimeSincexx", 
        "type" => "jmx", 
    "metric_value_string" => "191.0 secs" 
} 

Answer 1

这是错误的语法。

filter { 
    if "TimeSince" in [metric_path] or "Delay" in [metric_path] { 
     mutate { add_field => { "time_in_seconds" => "%{metric_value_string}"} } 
     mutate { gsub => ["time_in_seconds", ".0 secs", ""] } 
     mutate { convert => ["time_in_seconds", "integer"] } 
    } 
} 

应该是

filter { 
    if "TimeSince" in [metric_path] or "Delay" in [metric_path] { 
     mutate { add_field => { "time_in_seconds" => "%{metric_value_string}"} } 
     mutate { gsub => ["time_in_seconds", ".0 secs", ""] } 
     mutate { convert => ["time_in_seconds", "integer"] } 
    } 
} 

语法在一个正确的例子示@https://discuss.elastic.co/t/solved-the-filter-plugin-mutate-convert-doesnt-work-in-5-0/65496/3