Module: LVS::JsonService::Request::ClassMethods

Defined in:
lib/lvs/json_service/request.rb

Instance Method Summary collapse

Instance Method Details

#http_request_with_timeout(service, args, options) ⇒ Object 



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# File 'lib/lvs/json_service/request.rb', line 14

def http_request_with_timeout(service, args, options)

  uri = URI.parse(service)

  http = Net::HTTP.new(uri.host, uri.port)

  http = Net::HTTP.new(uri.host, uri.port)
  if options[:encrypted] || require_ssl?
    http.use_ssl = true
    # Self-signed certs give streams of "warning: peer certificate won't be verified in this SSL session"
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE 
    LVS::JsonService::Logger.debug "Using SSL"
    if options[:auth_cert]
      LVS::JsonService::Logger.debug "Using Auth"
      http.cert = OpenSSL::X509::Certificate.new(File.read(options[:auth_cert]))
      http.key = OpenSSL::PKey::RSA.new(File.read(options[:auth_key]), options[:auth_key_password])
    end
  end

  http.open_timeout = options[:timeout] || 1
  http.read_timeout = options[:timeout] || 1

  req = Net::HTTP::Post.new(uri.path)
  req.form_data = { "object_request" => args.to_json }

  retries = options[:retries] || 0

  begin
    retries -= 1          
    response = http.start { |connection| connection.request(req) }
  
  rescue Timeout::Error => e
    if retries >= 0
      LVS::JsonService::Logger.debug(
        "Retrying #{service} due to TimeoutError"
      )
      retry
    end
    raise LVS::JsonService::TimeoutError.new("Backend failed to respond in time", 500, service, args)
            
  rescue Errno::ECONNREFUSED => e
    if retries >= 0
      LVS::JsonService::Logger.debug(
        "Retrying #{service} due to Errno::ECONNREFUSED"
      )
      sleep(1)  
      retry
    end
    raise LVS::JsonService::BackendUnavailableError.new("Backend unavailable", 500, service, args)
    
  rescue OpenSSL::SSL::SSLError => e
    raise LVS::JsonService::BackendUnavailableError.new("Backend unavailable #{e}", 500, service, args)
    
  end

  if response.is_a?(Net::HTTPNotFound)
    raise LVS::JsonService::NotFoundError.new("404 Found for the service", 404, service, args)
  end

  response
end

#run_remote_request(service, args, options = {}) ⇒ Object 



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# File 'lib/lvs/json_service/request.rb', line 76

def run_remote_request(service, args, options = {})
  LVS::JsonService::Logger.debug "Requesting '#{service}' with #{args.to_json}"
  
  if options[:cached_for]
    timing = "CACHED"
    response = Rails.cache.fetch([service, args].cache_key, :expires_in => options[:cached_for]) do
      start = Time.now
      response = http_request_with_timeout(service, args, options)
      timing = ("%.1f" % ((Time.now - start) * 1000)) + "ms"
      response
    end
  else
    start = Time.now
    response = http_request_with_timeout(service, args, options)
    timing = ("%.1f" % ((Time.now - start) * 1000)) + "ms"
  end
  
  if response.body.size < 1024
    LVS::JsonService::Logger.debug "Response (#{timing}): #{response.body.gsub(/\n/, '')}"
  else
    LVS::JsonService::Logger.debug "Response Snippet (#{timing}): #{response.body.gsub(/\n/, '')[0..1024]}"
  end
  result = JSON.parse(response.body)
  if result.is_a?(Hash) && result.has_key?("PCode")
    raise LVS::JsonService::Error.new(result["message"], result["PCode"], service, args, result)
  end
  result
end