134 lines
4.0 KiB
Ruby
134 lines
4.0 KiB
Ruby
# Copyright 2010 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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module Google
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class APIClient
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##
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# This class wraps a result returned by an API call.
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class Result
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def initialize(reference, request, response)
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@reference = reference
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@request = request
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@response = response
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end
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attr_reader :reference
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attr_reader :request
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attr_reader :response
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def status
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return @response[0]
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end
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def headers
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return @response[1]
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end
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def body
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return @body ||= (begin
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response_body = @response[2]
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merged_body = (response_body.inject(StringIO.new) do |accu, chunk|
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accu.write(chunk)
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accu
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end).string
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end)
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end
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def data
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return @data ||= (begin
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_, content_type = self.headers.detect do |h, v|
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h.downcase == 'Content-Type'.downcase
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end
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media_type = content_type[/^([^;]*);?.*$/, 1].strip.downcase
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data = self.body
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case media_type
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when 'application/json'
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data = MultiJson.decode(data)
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# Strip data wrapper, if present
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data = data['data'] if data.has_key?('data')
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else
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raise ArgumentError,
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"Content-Type not supported for parsing: #{media_type}"
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end
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if @reference.api_method && @reference.api_method.response_schema
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# Automatically parse using the schema designated for the
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# response of this API method.
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data = @reference.api_method.response_schema.new(data)
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data
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else
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# Otherwise, return the raw unparsed value.
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# This value must be indexable like a Hash.
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data
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end
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end)
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end
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def pagination_type
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return :token
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end
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def page_token_param
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return "pageToken"
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end
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def next_page_token
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if self.data.respond_to?(:next_page_token)
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return self.data.next_page_token
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elsif self.data.respond_to?(:[])
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return self.data["nextPageToken"]
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else
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raise TypeError, "Data object did not respond to #next_page_token."
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end
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end
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def next_page
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merged_parameters = Hash[self.reference.parameters].merge({
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self.page_token_param => self.next_page_token
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})
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# Because References can be coerced to Hashes, we can merge them,
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# preserving all context except the API method parameters that we're
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# using for pagination.
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return Google::APIClient::Reference.new(
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Hash[self.reference].merge(:parameters => merged_parameters)
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)
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end
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def prev_page_token
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if self.data.respond_to?(:prev_page_token)
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return self.data.prev_page_token
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elsif self.data.respond_to?(:[])
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return self.data["prevPageToken"]
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else
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raise TypeError, "Data object did not respond to #next_page_token."
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end
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end
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def prev_page
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merged_parameters = Hash[self.reference.parameters].merge({
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self.page_token_param => self.prev_page_token
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})
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# Because References can be coerced to Hashes, we can merge them,
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# preserving all context except the API method parameters that we're
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# using for pagination.
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return Google::APIClient::Reference.new(
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Hash[self.reference].merge(:parameters => merged_parameters)
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)
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end
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end
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end
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end
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