class NSWTopo::ArcGISServer::Connection
Public Class Methods
new(http, service_path)
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 4 def initialize(http, service_path) @http, @service_path, @headers = http, service_path, { "User-Agent" => "Ruby/#{RUBY_VERSION}", "Referer" => "%s://%s" % [http.use_ssl? ? "https" : "http", http.address] } http.max_retries = 0 end
Public Instance Methods
get(relative_path, **query, &block)
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 20 def get(relative_path, **query, &block) path = Pathname(@service_path).join(relative_path).to_s path << ?? << URI.encode_www_form(query) unless query.empty? request = Net::HTTP::Get.new(path, @headers) repeatedly_request(request, &block) end
get_json(relative_path = "", **query)
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 43 def get_json(relative_path = "", **query) get relative_path, query.merge(f: "json"), &method(:process_json) end
post(relative_path, **query, &block)
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 27 def post(relative_path, **query, &block) path = Pathname(@service_path).join(relative_path).to_s request = Net::HTTP::Post.new(path, @headers) request.body = URI.encode_www_form(query) repeatedly_request(request, &block) end
post_json(relative_path = "", **query)
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 47 def post_json(relative_path = "", **query) post relative_path, query.merge(f: "json"), &method(:process_json) end
process_json(response)
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 34 def process_json(response) JSON.parse(response.body).tap do |result| # raise Error, result["error"].values_at("message", "details").compact.join(?\n) if result["error"] raise Error, result["error"]["message"] if result["error"] end rescue JSON::ParserError raise Error, "unexpected ArcGIS response format" end
repeatedly_request(request) { |response| ... }
click to toggle source
# File lib/nswtopo/gis/arcgis_server/connection.rb, line 9 def repeatedly_request(request) intervals ||= 5.times.map(&1.4142.method(:**)) response = @http.request(request) response.error! unless Net::HTTPSuccess === response yield response rescue *ERRORS, Error => error interval = intervals.shift interval ? sleep(interval) : raise(error) retry end