google-api-ruby-client/lib/google/api_client/reference.rb

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# Copyright 2010 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
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gem 'faraday', '~> 0.8.1'
require 'faraday'
require 'faraday/utils'
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require 'multi_json'
require 'addressable/uri'
require 'stringio'
require 'google/api_client/discovery'
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# TODO - needs some serious cleanup
module Google
class APIClient
class Reference
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MULTIPART_BOUNDARY = "-----------RubyApiMultipartPost".freeze
def initialize(options={})
# We only need this to do lookups on method ID String values
# It's optional, but method ID lookups will fail if the client is
# omitted.
@client = options[:client]
@version = options[:version] || 'v1'
self.connection = options[:connection] || Faraday.default_connection
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self.authorization = options[:authorization]
self.api_method = options[:api_method]
self.parameters = options[:parameters] || {}
# These parameters are handled differently because they're not
# parameters to the API method, but rather to the API system.
self.parameters['key'] ||= options[:key] if options[:key]
self.parameters['userIp'] ||= options[:user_ip] if options[:user_ip]
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self.headers = options[:headers] || {}
if options[:media]
self.media = options[:media]
upload_type = parameters['uploadType'] || parameters['upload_type']
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case upload_type
when "media"
if options[:body] || options[:body_object]
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raise ArgumentError, "Can not specify body & body object for simple uploads"
end
self.headers['Content-Type'] ||= self.media.content_type
self.body = self.media
when "multipart"
unless options[:body_object]
raise ArgumentError, "Multipart requested but no body object"
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end
# This is all a bit of a hack due to signet requiring body to be a string
# Ideally, update signet to delay serialization so we can just pass
# streams all the way down through to the HTTP lib
metadata = StringIO.new(serialize_body(options[:body_object]))
env = {
:request_headers => {'Content-Type' => "multipart/related;boundary=#{MULTIPART_BOUNDARY}"},
:request => { :boundary => MULTIPART_BOUNDARY }
}
multipart = Faraday::Request::Multipart.new
self.body = multipart.create_multipart(env, [
[nil,Faraday::UploadIO.new(metadata, 'application/json', 'file.json')],
[nil, self.media]])
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self.headers.update(env[:request_headers])
when "resumable"
file_length = self.media.length
self.headers['X-Upload-Content-Type'] = self.media.content_type
self.headers['X-Upload-Content-Length'] = file_length.to_s
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if options[:body_object]
self.headers['Content-Type'] ||= 'application/json'
self.body = serialize_body(options[:body_object])
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else
self.body = ''
end
else
raise ArgumentError, "Invalid uploadType for media"
end
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elsif options[:body]
self.body = options[:body]
elsif options[:body_object]
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self.headers['Content-Type'] ||= 'application/json'
self.body = serialize_body(options[:body_object])
else
self.body = ''
end
unless self.api_method
self.http_method = options[:http_method] || 'GET'
self.uri = options[:uri]
unless self.parameters.empty?
self.uri.query_values =
(self.uri.query_values || {}).merge(self.parameters)
end
end
end
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def serialize_body(body)
return body.to_json if body.respond_to?(:to_json)
return MultiJson.dump(options[:body_object].to_hash) if body.respond_to?(:to_hash)
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raise TypeError, 'Could not convert body object to JSON.' +
'Must respond to :to_json or :to_hash.'
end
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def media
return @media
end
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def media=(media)
@media = (media)
end
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def authorization
return @authorization
end
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def authorization=(new_authorization)
@authorization = new_authorization
end
def connection
return @connection
end
def connection=(new_connection)
if new_connection.kind_of?(Faraday::Connection)
@connection = new_connection
else
raise TypeError,
"Expected Faraday::Connection, got #{new_connection.class}."
end
end
def api_method
return @api_method
end
def api_method=(new_api_method)
if new_api_method.kind_of?(Google::APIClient::Method) ||
new_api_method == nil
@api_method = new_api_method
elsif new_api_method.respond_to?(:to_str) ||
new_api_method.kind_of?(Symbol)
unless @client
raise ArgumentError,
"API method lookup impossible without client instance."
end
new_api_method = new_api_method.to_s
# This method of guessing the API is unreliable. This will fail for
# APIs where the first segment of the RPC name does not match the
# service name. However, this is a fallback mechanism anyway.
# Developers should be passing in a reference to the method, rather
# than passing in a string or symbol. This should raise an error
# in the case of a mismatch.
api = new_api_method[/^([^.]+)\./, 1]
@api_method = @client.discovered_method(
new_api_method, api, @version
)
if @api_method
# Ditch the client reference, we won't need it again.
@client = nil
else
raise ArgumentError, "API method could not be found."
end
else
raise TypeError,
"Expected Google::APIClient::Method, got #{new_api_method.class}."
end
end
def parameters
return @parameters
end
def parameters=(new_parameters)
# No type-checking needed, the Method class handles this.
@parameters = new_parameters
end
def body
return @body
end
def body=(new_body)
if new_body.respond_to?(:to_str)
@body = new_body.to_str
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elsif new_body.respond_to?(:read)
@body = new_body.read()
elsif new_body.respond_to?(:inject)
@body = (new_body.inject(StringIO.new) do |accu, chunk|
accu.write(chunk)
accu
end).string
else
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raise TypeError, "Expected body to be String, IO, or Enumerable chunks."
end
end
def headers
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return @headers ||= {}
end
def headers=(new_headers)
if new_headers.kind_of?(Array) || new_headers.kind_of?(Hash)
@headers = new_headers
else
raise TypeError, "Expected Hash or Array, got #{new_headers.class}."
end
end
def http_method
return @http_method ||= self.api_method.http_method
end
def http_method=(new_http_method)
if new_http_method.kind_of?(Symbol)
@http_method = new_http_method.to_s.upcase
elsif new_http_method.respond_to?(:to_str)
@http_method = new_http_method.to_str.upcase
else
raise TypeError,
"Expected String or Symbol, got #{new_http_method.class}."
end
end
def uri
return @uri ||= self.api_method.generate_uri(self.parameters)
end
def uri=(new_uri)
@uri = Addressable::URI.parse(new_uri)
end
def to_request
if self.api_method
return self.api_method.generate_request(
self.parameters, self.body, self.headers,
:connection => self.connection
)
else
return self.connection.build_request(
self.http_method.to_s.downcase.to_sym
) do |req|
req.url(Addressable::URI.parse(self.uri).normalize.to_s)
req.headers = Faraday::Utils::Headers.new(self.headers)
req.body = self.body
end
end
end
def to_hash
options = {}
if self.api_method
options[:api_method] = self.api_method
options[:parameters] = self.parameters
else
options[:http_method] = self.http_method
options[:uri] = self.uri
end
options[:headers] = self.headers
options[:body] = self.body
options[:connection] = self.connection
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options[:authorization] = self.authorization unless self.authorization.nil?
return options
end
end
end
end