Module: OpenDataAPI

Defined in:
lib/opendata-api.rb,
lib/opendata-api/config.rb

Defined Under Namespace

Modules: Constants

Class Method Summary collapse

Class Method Details

.init(api_key) ⇒ Object 



11
12
13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/opendata-api.rb', line 11

def self.init(api_key)
  raise "OpenData API Key required" if api_key.empty?

  uri_base = URI.parse(OpenDataAPI::Constants::BASE_URL)
  http_base = Net::HTTP.new(uri_base.host, uri_base.port)

  # Store API Key as class variable
  OpenDataAPIRequest.set_api_key(api_key)

  # Store URI and HTTP base as class variables
  OpenDataAPIRequest.set_uri_base(uri_base)
  OpenDataAPIRequest.set_http_base(http_base)
end

.run(args) ⇒ Object 



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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
 
# File 'lib/opendata-api.rb', line 25

def self.run(args)
  api_requests = []
  args.each do |arg|
    case arg[:api_name]
    when 'traffic_volume_counts'
      # Request for Traffic Volume Counts API
      uri_traffic_volume_counts_api = URI.parse(
        OpenDataAPI::Constants::TrafficVolumeCountsAPI::BASE_URL + 
        OpenDataAPI::Constants::TrafficVolumeCountsAPI::API_ENDPOINT + 
        OpenDataAPI::Constants::TrafficVolumeCountsAPI.query_string_params(arg[:format], arg[:table], arg[:limit])
      )
      request_for_traffic_volume_counts_api = {
        api_name: arg[:api_name],
        api_instance: OpenDataAPIRequest.new(OpenDataAPIRequest.http_base, uri_traffic_volume_counts_api, OpenDataAPIRequest.api_key)
      }
      api_requests << request_for_traffic_volume_counts_api
    when 'trip_planner'
      # Request for Trip Planner API
      uri_trip_planner_api = URI.parse(
        OpenDataAPI::Constants::TripPlannerAPI::BASE_URL + 
        OpenDataAPI::Constants::TripPlannerAPI::API_ENDPOINT + 
        OpenDataAPI::Constants::TripPlannerAPI.query_string_params(arg[:format], arg[:coord_lat], arg[:coord_long], arg[:coord_radius])
      )
      request_for_trip_planner_api = {
        api_name: arg[:api_name],
        api_instance: OpenDataAPIRequest.new(OpenDataAPIRequest.http_base, uri_trip_planner_api, OpenDataAPIRequest.api_key)
      }
      api_requests << request_for_trip_planner_api
    else
      raise ArgumentError.new("Invalid API Name")
    end
  end

  begin
    # Start HTTP(S) Session to re-use across multiple requests
    Net::HTTP.start(OpenDataAPIRequest.uri_base.hostname, OpenDataAPIRequest.uri_base.port,
      :use_ssl => OpenDataAPIRequest.uri_base.scheme == 'https') do |http_session|
      puts http_session.use_ssl? ? "OpenData API HTTPS Session" : "OpenData API HTTP Session"

      http_session.verify_mode = OpenSSL::SSL::VERIFY_NONE
      http_session.read_timeout = OpenDataAPI::Constants::READ_TIMEOUT

      response = {}
      # Request #1 to each API (i.e. Traffic Volume Counts API, Trip Planner API, etc)
      api_requests.each do |request|
        _res = request[:api_instance].fetch(http_session, request[:api_instance].request, OpenDataAPI::Constants::REQUEST_LIMIT)
        # puts JSON.pretty_generate(JSON.parse(_res.body))
        response[request[:api_name].to_sym] = _res.body
      end
      response
    end
  rescue Exception => e
    raise "Exception opening TCP connection: #{e}"
  end
end