Class: Cielo24::WebUtils

Inherits:
Object
  • Object
show all
Includes:
JSON, TZInfo
Defined in:
lib/cielo24/web_utils.rb

Constant Summary collapse

BASIC_TIMEOUT =

seconds (1 minute)

60
DOWNLOAD_TIMEOUT =

seconds (5 minutes)

300
UPLOAD_TIMEOUT =

seconds (1 week)

60*60*24*7
SERVER_TZ = 
'America/Los_Angeles'
LOGGER = 
Logger.new(STDOUT)

Class Method Summary collapse

Class Method Details

.get_json(uri, method, timeout, query = nil, headers = nil, body = nil) ⇒ Object 



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# File 'lib/cielo24/web_utils.rb', line 18

def self.get_json(uri, method, timeout, query=nil, headers=nil, body=nil)
  response = http_request(uri, method, timeout, query, headers, body)
  return json_parse(response)
end

.http_request(uri, method, timeout, query = nil, headers = nil, body = nil) ⇒ Object 



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# File 'lib/cielo24/web_utils.rb', line 23

def self.http_request(uri, method, timeout, query=nil, headers=nil, body=nil)
  http_client = HTTPClient.new
  http_client.cookie_manager = nil
  http_client.send_timeout = UPLOAD_TIMEOUT
  LOGGER.info(uri + (query.nil? ? '' : '?' + URI.encode_www_form(query)))

  # Timeout block:
  begin
    # Error is raised if the following block fails to execute in 'timeout' sec:
    Timeout.timeout(timeout) { # nil timeout = infinite

      response = http_client.request(method, uri, query, body, headers, nil)
      # Handle web errors
      if response.status_code == 200 or response.status_code == 204
        return response.body
      else
        json = json_parse(response.body)
        raise WebError.new(response.status_code, json['ErrorType'], json['ErrorComment'])
      end

    }
  rescue Timeout::Error
    raise TimeoutError.new('The HTTP session has timed out.')
  end
end

.json_parse(s) ⇒ Object 



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# File 'lib/cielo24/web_utils.rb', line 58

def self.json_parse(s)
  begin
    return JSON.parse(s)
  rescue JSON::ParserError
    raise ParsingError.new("Bad JSON String: \"#{s}\"")
  end
end

.to_utc(s) ⇒ Object 



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# File 'lib/cielo24/web_utils.rb', line 49

def self.to_utc(s)
  return s if s.empty?
  tz = Timezone.get(SERVER_TZ)
  local = DateTime.iso8601(s)
  utc = tz.local_to_utc local
  format = '%Y-%m-%dT%H:%M:%S.%L%z' # iso8601 with milliseconds
  utc.strftime(format)
end