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#!/usr/bin/env python
# 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.
import sys
from avro import ipc
from avro import protocol
MAIL_PROTOCOL_JSON = """\
{"namespace": "example.proto",
"protocol": "Mail",
"types": [
{"name": "Message", "type": "record",
"fields": [
{"name": "to", "type": "string"},
{"name": "from", "type": "string"},
{"name": "body", "type": "string"}
]
}
],
"messages": {
"send": {
"request": [{"name": "message", "type": "Message"}],
"response": "string"
},
"replay": {
"request": [],
"response": "string"
}
}
}
"""
MAIL_PROTOCOL = protocol.parse(MAIL_PROTOCOL_JSON)
SERVER_HOST = 'localhost'
SERVER_PORT = 9090
class UsageError(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
def make_requestor(server_host, server_port, protocol):
client = ipc.HTTPTransceiver(SERVER_HOST, SERVER_PORT)
return ipc.Requestor(protocol, client)
if __name__ == '__main__':
if len(sys.argv) not in [4, 5]:
raise UsageError("Usage: <to> <from> <body> [<count>]")
# client code - attach to the server and send a message
# fill in the Message record
message = dict()
message['to'] = sys.argv[1]
message['from'] = sys.argv[2]
message['body'] = sys.argv[3]
try:
num_messages = int(sys.argv[4])
except:
num_messages = 1
# build the parameters for the request
params = {}
params['message'] = message
# send the requests and print the result
for msg_count in range(num_messages):
requestor = make_requestor(SERVER_HOST, SERVER_PORT, MAIL_PROTOCOL)
result = requestor.request('send', params)
print("Result: " + result)
# try out a replay message
requestor = make_requestor(SERVER_HOST, SERVER_PORT, MAIL_PROTOCOL)
result = requestor.request('replay', dict())
print("Replay Result: " + result)
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