Sha256: fcfb8b5212d16964f1184afeb98942b90a68ef8591ae93bb1460c843b07524a4
Contents?: true
Size: 1.41 KB
Versions: 5
Compression:
Stored size: 1.41 KB
Contents
module EventMachine
# EventMachine based Multi request client, based on a streaming HTTPRequest class,
# which allows you to open multiple parallel connections and return only when all
# of them finish. (i.e. ideal for parallelizing workloads)
#
# == Example
#
# EventMachine.run {
#
# multi = EventMachine::MultiRequest.new
#
# # add multiple requests to the multi-handler
# multi.add(EventMachine::HttpRequest.new('http://www.google.com/').get)
# multi.add(EventMachine::HttpRequest.new('http://www.yahoo.com/').get)
#
# multi.callback {
# p multi.responses[:succeeded]
# p multi.responses[:failed]
#
# EventMachine.stop
# }
# }
#
class MultiRequest
include EventMachine::Deferrable
attr_reader :requests, :responses
def initialize(conns=[], &block)
@requests = []
@responses = {:succeeded => [], :failed => []}
conns.each {|conn| add(conn)}
callback(&block) if block_given?
end
def add(conn)
@requests.push(conn)
conn.callback { @responses[:succeeded].push(conn); check_progress }
conn.errback { @responses[:failed].push(conn); check_progress }
end
protected
# invoke callback if all requests have completed
def check_progress
succeed(self) if (@responses[:succeeded].size +
@responses[:failed].size) == @requests.size
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems