# limitations under the License.
require 'addressable/uri'
+require 'google/api_client/reference'
require 'uuidtools'
module Google
@call_id, @status, @headers, @body = call_id, status, headers, body
end
end
-
+
##
# Wraps multiple API calls into a single over-the-wire HTTP request.
- class BatchRequest
-
+ class BatchRequest < Request
BATCH_BOUNDARY = "-----------RubyApiBatchRequest".freeze
- attr_accessor :options
attr_reader :calls, :callbacks
##
#
# @return [Google::APIClient::BatchRequest] The constructed object.
def initialize(options = {}, &block)
- # Request options, ignoring method and parameters.
- @options = options
- # Batched calls to be made, indexed by call ID.
- @calls = {}
- # Callbacks per batched call, indexed by call ID.
- @callbacks = {}
- # Order for the call IDs, since Ruby 1.8 hashes are unordered.
- @order = []
- # Global callback to be used for every call. If a specific callback
- # has been defined for a request, this won't be called.
+ @calls = []
@global_callback = block if block_given?
- # The last auto generated ID.
@last_auto_id = 0
- # Base ID for the batch request.
- @base_id = nil
+
+ # TODO(sgomes): Use SecureRandom.uuid, drop UUIDTools when we drop 1.8
+ @base_id = UUIDTools::UUID.random_create.to_s
+
+ options[:uri] ||= 'https://www.googleapis.com/batch'
+ options[:http_method] ||= 'POST'
+
+ super options
end
##
unless call.kind_of?(Google::APIClient::Reference)
call = Google::APIClient::Reference.new(call)
end
- if call_id.nil?
- call_id = new_id
- end
- if @calls.include?(call_id)
+ call_id ||= new_id
+ if @calls.assoc(call_id)
raise BatchError,
'A call with this ID already exists: %s' % call_id
end
- @calls[call_id] = call
- @order << call_id
- if block_given?
- @callbacks[call_id] = block
- elsif @global_callback
- @callbacks[call_id] = @global_callback
- end
+ callback = block_given? ? block : @global_callback
+ @calls << [call_id, call, callback]
return self
end
- ##
- # Convert this batch request into an HTTP request.
- #
- # @return [Array<String, String, Hash, String>]
- # An array consisting of, in order: HTTP method, request path, request
- # headers and request body.
- def to_http_request
- return ['POST', request_uri, request_headers, request_body]
- end
-
##
# Processes the HTTP response to the batch request, issuing callbacks.
#
parts = parts[1...-1]
parts.each do |part|
call_response = deserialize_call_response(part)
- callback = @callbacks[call_response.call_id]
- call = @calls[call_response.call_id]
- result = Google::APIClient::Result.new(call, nil, call_response)
+ _, call, callback = @calls.assoc(call_response.call_id)
+ result = Google::APIClient::Result.new(call, call_response)
callback.call(result) if callback
end
end
- private
+ ##
+ # Return the request body for the BatchRequest's HTTP request.
+ #
+ # @return [String] The request body.
+ def to_http_request
+ if @calls.nil? || @calls.empty?
+ raise BatchError, 'Cannot make an empty batch request'
+ end
+ parts = @calls.map {|(call_id, call, callback)| serialize_call(call_id, call)}
+ build_multipart(parts, 'multipart/mixed', BATCH_BOUNDARY)
+ super
+ end
+
+
+ protected
##
# Helper method to find a header from its name, regardless of case.
# @return [String] the new, unique ID.
def new_id
@last_auto_id += 1
- while @calls.include?(@last_auto_id)
+ while @calls.assoc(@last_auto_id)
@last_auto_id += 1
end
return @last_auto_id.to_s
end
- ##
- # Convert an id to a Content-ID header value.
- #
- # @param [String] call_id: identifier of individual call.
- #
- # @return [String]
- # A Content-ID header with the call_id encoded into it. A UUID is
- # prepended to the value because Content-ID headers are supposed to be
- # universally unique.
- def id_to_header(call_id)
- if @base_id.nil?
- # TODO(sgomes): Use SecureRandom.uuid, drop UUIDTools when we drop 1.8
- @base_id = UUIDTools::UUID.random_create.to_s
- end
-
- return '<%s+%s>' % [@base_id, Addressable::URI.encode(call_id)]
- end
+
##
# Convert a Content-ID header value to an id. Presumes the Content-ID
return Addressable::URI.unencode(call_id)
end
- ##
- # Convert a single batched call into a string.
- #
- # @param [Google::APIClient::Reference] call: the call to serialize.
- #
- # @return [String] The request as a string in application/http format.
- def serialize_call(call)
- http_request = call.to_request
- method = http_request.method.to_s.upcase
- path = http_request.path.to_s
- status_line = method + " " + path + " HTTP/1.1"
- serialized_call = status_line
- if http_request.headers
- http_request.headers.each do |header, value|
- serialized_call << "\r\n%s: %s" % [header, value]
- end
- end
- if http_request.body
- serialized_call << "\r\n\r\n"
- serialized_call << http_request.body
- end
- return serialized_call
- end
-
##
# Auxiliary method to split the headers from the body in an HTTP response.
#
end
##
- # Return the request headers for the BatchRequest's HTTP request.
+ # Convert a single batched call into a string.
#
- # @return [Hash] The HTTP headers.
- def request_headers
- return {
- 'Content-Type' => 'multipart/mixed; boundary=%s' % BATCH_BOUNDARY
- }
- end
-
- ##
- # Return the request path for the BatchRequest's HTTP request.
+ # @param [Google::APIClient::Reference] call: the call to serialize.
#
- # @return [String] The request path.
- def request_uri
- if @calls.nil? || @calls.empty?
- raise BatchError, 'Cannot make an empty batch request'
+ # @return [StringIO] The request as a string in application/http format.
+ def serialize_call(call_id, call)
+ http_request = call.to_http_request
+ body = "#{http_request.method.to_s.upcase} #{http_request.path} HTTP/1.1"
+ http_request.headers.each do |header, value|
+ body << "\r\n%s: %s" % [header, value]
end
- # All APIs have the same batch path, so just get the first one.
- return @calls.first[1].api_method.api.batch_path
+ if http_request.body
+ # TODO - CompositeIO if body is a stream
+ body << "\r\n\r\n"
+ if http_request.body.respond_to?(:read)
+ body << http_request.body.read
+ else
+ body << http_request.body.to_s
+ end
+ end
+ Faraday::UploadIO.new(StringIO.new(body), 'application/http', 'ruby-api-request', 'Content-ID' => id_to_header(call_id))
end
-
+
##
- # Return the request body for the BatchRequest's HTTP request.
+ # Convert an id to a Content-ID header value.
#
- # @return [String] The request body.
- def request_body
- body = ""
- @order.each do |call_id|
- body << "--" + BATCH_BOUNDARY + "\r\n"
- body << "Content-Type: application/http\r\n"
- body << "Content-ID: %s\r\n\r\n" % id_to_header(call_id)
- body << serialize_call(@calls[call_id]) + "\r\n\r\n"
- end
- body << "--" + BATCH_BOUNDARY + "--"
- return body
+ # @param [String] call_id: identifier of individual call.
+ #
+ # @return [String]
+ # A Content-ID header with the call_id encoded into it. A UUID is
+ # prepended to the value because Content-ID headers are supposed to be
+ # universally unique.
+ def id_to_header(call_id)
+ return '<%s+%s>' % [@base_id, Addressable::URI.encode(call_id)]
end
+
end
end
end
\ No newline at end of file
projects / arvados.git / blobdiff