Grok RSpec 测试失败

Grok RSpec test failing

我正在尝试让 grok 与 logstash 一起工作,但努力下车。我试图将事情简化为这里的简洁测试:

require "test_utils"

describe "basic grokking" do
  extend LogStash::RSpec

  config <<-CONFIG
    filter {
      grok {
        match => [ "message", "%{IP:client} %{WORD:method} %{URIPATHPARAM:request} %{NUMBER:bytes} %{NUMBER:duration}" ]
      }
    }
  CONFIG

  sample ({'@message' => '55.3.244.1 GET /index.html 15824 0.043'}) do

    puts subject.inspect # view http://www.codeshare.io/OhDC0

    insist { subject["client"] } == "55.3.244.1"
  end
end

我收到以下错误:

  1) basic grokking "{"@message":"55.3.244.1 GET /index.html 15824 0.043..." when processed
 Failure/Error: Unable to find matching line from backtrace
 Insist::Failure:
   Expected "55.3.244.1", but got nil

再多的语法调整都没有结果,而且我也不知道如何检查 subject 以找出其中的内容。

最终目的是用grok提取如下HttpRequestId:

[HttpRequestId = e29041b2-a4a0-4bf3-ba05-2de5e7bcf444] 2015/04/10 08:12:51:632 [DEBUG] ... log message ...

使用这样的东西:

grok {
    match => [ "Message", "\[HttpRequestId = %{UUID:HttpRequestId}" ]
}

注意 我已经根据 https://grokdebug.herokuapp.com/ 检查了我的模式并且它们有效。这与我测试的方式有关。

经过广泛调查,这里是 logstash 1.4.2 的 grok 表达式的最小 rspec 测试:

# encoding: utf-8

require "test_utils"

describe "simple test" do
  extend LogStash::RSpec

   config <<-CONFIG
    filter {
      grok {
         match        => { "message" => "am%{GREEDYDATA:foo}" }
      }
    }
  CONFIG

  sample 'amessage' do
    insist { subject["foo"] } == "essage"
    insist { subject["message"] } == "amessage"
  end
end

请注意,您必须有 # encoding ... 行,否则您会收到 Expected "essage", but got nil 消息。

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