Grok RSpec测试失败

时间:2015-04-10 13:18:33

标签: ruby rspec logstash logstash-grok

我试图让grok使用logstash,但却努力摆脱起跑线。我已经尝试将事情简化为简洁的测试,其中包括:

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

没有多少语法调整得到结果,我也无法弄清楚如何检查subject以找出那里有什么。

最终目标是使用grok提取以下HttpRequestId

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

使用类似的东西:

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

注意我已针对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。

1 个答案:

答案 0 :(得分:2)

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,您必须拥有# encoding ...行,否则您将收到Expected "essage", but got nil消息。

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