Module: TingYun::TingYunService::Request

Included in:
Http
Defined in:
lib/ting_yun/ting_yun_service/request.rb

Instance Method Summary collapse

Instance Method Details

#check_post_size(post) ⇒ Object

Raises:



66
67
68
69
70
 
# File 'lib/ting_yun/ting_yun_service/request.rb', line 66

def check_post_size(post)
  return if post.size < TingYun::Agent.config[:post_size_limit]
  TingYun::Agent.logger.debug "Tried to send too much data: #{post.size} bytes"
  raise TingYun::Support::Exception::UnrecoverableServerException.new('413 Request Entity Too Large')
end

#compress_request_if_needed(data) ⇒ Object 



56
57
58
59
60
61
62
63
64
 
# File 'lib/ting_yun/ting_yun_service/request.rb', line 56

def compress_request_if_needed(data)
  encoding = 'identity'
  if data.size > 64*1024
    data = TingYun::Support::Serialize::Encoders::Compressed.encode(data)
    encoding = 'deflate'
  end
  check_post_size(data)
  [data, encoding]
end

#send_request(opts) ⇒ Object

Posts to the specified server, retry every minute if ServerConnectionException



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/ting_yun/ting_yun_service/request.rb', line 10

def send_request(opts)
  request = Net::HTTP::Post.new(opts[:uri], 'CONTENT-ENCODING' => opts[:encoding], 'HOST' => opts[:collector].name)
  request['user-agent'] = user_agent
  request.content_type = "application/octet-stream"
  request.body = opts[:data]
  response = nil
  max_attempts = 2
  attempts = 0
  begin
    attempts += 1
    conn = http_connection
    TingYun::Agent.logger.debug "Sending request to #{opts[:collector]}#{opts[:uri]}"
    TingYun::Support::TimerLib.timeout(@request_timeout) do
      response = conn.request(request)
    end
  rescue *CONNECTION_ERRORS => e
    close_shared_connection
    if attempts < max_attempts
      TingYun::Agent.logger.debug("Retrying request to #{opts[:collector]}#{opts[:uri]} after #{e}")
      retry
    else
      raise TingYun::Support::Exception::ServerConnectionException, "Recoverable error talking to #{@collector} after #{attempts} attempts: #{e}"
    end
  end
  TingYun::Agent.logger.debug "Received response, status: #{response.code}, encoding: '#{response['content-encoding']}'"


  case response
    when Net::HTTPSuccess
      true # do nothing
    when Net::HTTPServiceUnavailable
      raise TingYun::Support::Exception::ServerConnectionException, "Service unavailable (#{response.code}): #{response.message}"
    when Net::HTTPGatewayTimeOut
      raise TingYun::Support::Exception::ServerConnectionException, "Gateway timeout (#{response.code}): #{response.message}"
    when Net::HTTPRequestEntityTooLarge
      raise TingYun::Support::Exception::UnrecoverableServerException, '413 Request Entity Too Large'
    when Net::HTTPUnsupportedMediaType
      raise TingYun::Support::Exception::UnsupportedMediaType, '415 Unsupported Media Type'
    else
      raise TingYun::Support::Exception::ServerConnectionException, "Unexpected response from server (#{response.code}): #{response.message}"
  end
  response
end

#user_agent ⇒ Object 



72
73
74
75
76
77
78
79
 
# File 'lib/ting_yun/ting_yun_service/request.rb', line 72

def user_agent
  ruby_description = ''
  # note the trailing space!
  ruby_description << "(ruby #{::RUBY_VERSION} #{::RUBY_PLATFORM}) " if defined?(::RUBY_VERSION) && defined?(::RUBY_PLATFORM)
  zlib_version = ''
  zlib_version << "zlib/#{Zlib.zlib_version}" if defined?(::Zlib) && Zlib.respond_to?(:zlib_version)
  "NBS Newlens Agent/#{TingYun::VERSION::STRING} #{ruby_description}#{zlib_version}"
end

#valid_to_marshal?(data) ⇒ Boolean

Returns:

  • (Boolean) 


81
82
83
84
85
86
87
 
# File 'lib/ting_yun/ting_yun_service/request.rb', line 81

def valid_to_marshal?(data)
  @marshaller.dump(data)
  true
rescue StandardError, SystemStackError => e
  TingYun::Agent.logger.warn("Unable to marshal environment report on connect.", e)
  false
end