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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
require 'avro'
require 'webrick'
require 'uri'
require 'logger'
class GenericResponder < Avro::IPC::Responder
def initialize(proto, msg, datum)
proto_json = open(proto).read
super(Avro::Protocol.parse(proto_json))
@msg = msg
@datum = datum
end
def call(message, request)
if message.name == @msg
STDERR.puts "Message: #{message.name} Datum: #{@datum.inspect}"
@datum
end
end
end
class GenericHandler < WEBrick::HTTPServlet::AbstractServlet
def do_POST(req, resp)
call_request = Avro::IPC::FramedReader.new(StringIO.new(req.body)).read_framed_message
unframed_resp = $responder.respond(call_request)
writer = Avro::IPC::FramedWriter.new(StringIO.new)
writer.write_framed_message(unframed_resp)
resp.body = writer.to_s
@server.stop
end
end
def run_server(uri, proto, msg, datum)
uri = URI.parse(uri)
$responder = GenericResponder.new(proto, msg, datum)
server = WEBrick::HTTPServer.new(:BindAddress => uri.host,
:Port => uri.port,
:Logger => Logger.new(StringIO.new))
server.mount '/', GenericHandler
puts "Port: #{server.config[:Port]}"
STDOUT.flush
trap("INT") { server.stop }
trap("TERM") { server.stop }
server.start
end
def send_message(uri, proto, msg, datum)
uri = URI.parse(uri)
trans = Avro::IPC::HTTPTransceiver.new(uri.host, uri.port)
proto_json = open(proto).read
requestor = Avro::IPC::Requestor.new(Avro::Protocol.parse(proto_json),
trans)
p requestor.request(msg, datum)
end
def file_or_stdin(f)
f == "-" ? STDIN : open(f)
end
def main
if ARGV.size == 0
puts "Usage: #{$0} [dump|rpcreceive|rpcsend]"
return 1
end
case ARGV[0]
when "dump"
if ARGV.size != 3
puts "Usage: #{$0} dump input_file"
return 1
end
d = Avro::DataFile.new(file_or_stdin(ARGV[1]), Avro::IO::DatumReader.new)
d.each{|o| puts o.inspect }
d.close
when "rpcreceive"
usage_str = "Usage: #{$0} rpcreceive uri protocol_file "
usage_str += "message_name (-data d | -file f)"
unless [4, 6].include?(ARGV.size)
puts usage_str
return 1
end
uri, proto, msg = ARGV[1,3]
datum = nil
if ARGV.size > 4
case ARGV[4]
when "-file"
Avro::DataFile.open(ARGV[5]) {|f|
f.each{|d| datum = d; break }
}
when "-data"
puts "JSON Decoder not yet implemented."
return 1
else
puts usage_str
return 1
end
end
run_server(uri, proto, msg, datum)
when "rpcsend"
usage_str = "Usage: #{$0} rpcsend uri protocol_file "
usage_str += "message_name (-data d | -file f)"
unless [4,6].include?(ARGV.size)
puts usage_str
return 1
end
uri, proto, msg = ARGV[1,3]
datum = nil
if ARGV.size > 4
case ARGV[4]
when "-file"
Avro::DataFile.open(ARGV[5]){|f| f.each{|d| datum = d; break } }
when "-data"
puts "JSON Decoder not yet implemented"
return 1
else
puts usage_str
return 1
end
end
send_message(uri, proto, msg, datum)
end
return 0
end
if __FILE__ == $0
exit(main)
end
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