[add_field,tags,type=>"" ] doesn't work when connection is time out or Connection refused.

[kingmorning]

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• Version: 5.5.1
• Operating System: centos 7
• Config File :
  input {
  http_poller {
  urls => {
  url => "http://10.213.129.59:8080/apiserver/monitor/healthCheck1"
  }
  request_timeout => 5
  connect_timeout=>5
  socket_timeout => 5
  interval => 5
  codec => "json"
  type => "apiserver"
  add_field => {"projectName" => "szqy-apiserver"}
  add_tag => ["apiserver"]
  }
  http_poller {
  urls => {
  url => "http://10.199.212.83:8080/ignite?cmd=node&ip=10.199.212.83"
  }
  request_timeout => 5
  interval => 5
  codec => "json"
  connect_timeout=>5
  socket_timeout => 5
  type=>"ignite"
  add_field => {"projectName" => "ignite"}
  add_tag => ["ignite"]
  }
  }

output {
if [ projectName ] == "szqy-apiserver"{
kafka {
bootstrap_servers => "10.214.160.222:9092"
topic_id => "szqy"
codec => json
}
}
else if [ projectName ] == "ignite" {
kafka {
bootstrap_servers => "10.214.160.222:9092"
topic_id => "ignite"
codec => json
}
}
stdout { codec => rubydebug }
}

• Sample Data:
  {
  "http_request_failure" => {
  "request" => {
  "method" => "get",
  "url" => "http://10.213.129.59:8080/apiserver/monitor/healthCheck1"
  },
  "backtrace" => nil,
  "runtime_seconds" => 0.002,
  "name" => "url",
  "error" => "Connection refused (Connection refused)"
  },
  "@timestamp" => 2017-08-07T10:00:04.876Z,
  "@Version" => "1",
  "tags" => [
  [0] "_http_request_failure"
  ]
  }
  {
  "http_request_failure" => {
  "request" => {
  "method" => "get",
  "url" => "http://10.199.212.83:8080/ignite?cmd=node&ip=10.199.212.83"
  },
  "backtrace" => nil,
  "runtime_seconds" => 5.007,
  "name" => "url",
  "error" => "connect timed out"
  },
  "@timestamp" => 2017-08-07T10:00:06.136Z,
  "@Version" => "1",
  "tags" => [
  [0] "_http_request_failure"
  ]
  }

• Steps to Reproduce:

[mjpowersjr]

I believe this issue and #77 are likely describing the same issue. I've noticed this problem in Logstash 7.5.x as well. I have a 'type' field configured for the http_poller plugin, which added to events properly upon successful HTTP request, but is not being set upon timeout.