elasticsearch / kiabana - 分析和可视化交易的总时间？

Question

使用logstash解析日志文件，这里是发送到elasticsearch的json，如下所示：

对于包含事务开始时间的日志行，我添加db_transaction_commit_begin_time字段及其记录时间。

{
                           "message" => "2015-05-27 10:26:47,048  INFO [T:3 ID:26] (ClassName.java:396) - End committing transaction",
                          "@version" => "1",
                        "@timestamp" => "2015-05-27T15:24:11.594Z",
                              "host" => "test.com",
                              "path" => "/abc/xyz/log.logstash.test",
                "logTimestampString" => "2015-05-27 10:26:47,048",
                          "logLevel" => "INFO",
                        "threadInfo" => "T:3 ID:26",
                             "class" => "ClassName.java",
                              "line" => "396",
                        "logMessage" => "End committing transaction",
    "db_transaction_commit_begin_time" => "2015-05-27 10:26:47,048"
}

对于包含事务结束时间的日志行，我添加db_transaction_commit_end_time字段及其记录时间。

{
                           "message" => "2015-05-27 10:26:47,048  INFO [T:3 ID:26] (ClassName.java:396) - End committing transaction",
                          "@version" => "1",
                        "@timestamp" => "2015-05-27T15:24:11.594Z",
                              "host" => "test.com",
                              "path" => "/abc/xyz/log.logstash.test",
                "logTimestampString" => "2015-05-27 10:26:47,048",
                          "logLevel" => "INFO",
                        "threadInfo" => "T:3 ID:26",
                             "class" => "ClassName.java",
                              "line" => "396",
                        "logMessage" => "End committing transaction",
    "db_transaction_commit_end_time" => "2015-05-27 10:26:47,048"
}

是否可以计算db transaction相同的db事务的时间（db_transaction_commit_end_time - db_transaction_commit_begin_time）？我知道聚合可能有所帮助，但我是新手，无法弄明白。

如果我以某种方式计算出db_transaction_time并将其存储在变量中。我如何可视化kibana图表中的时间？

Answer 1

在logstash中使用elapsed{}过滤器。