examples/rmr/send.py

# ==================================================================================
#       Copyright (c) 2019 Nokia
#       Copyright (c) 2018-2019 AT&T Intellectual Property.
#
#   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.
# ==================================================================================
import time
import random
import string
import os
import signal
import sys
from ricxappframe.rmr import rmr


# Demonstrate NNG cleanup
def signal_handler(sig, frame):
    print("SIGINT received! Cleaning up rmr")
    rmr.rmr_close(mrc)
    print("Byeee")
    sys.exit(0)


# Init rmr
mrc = rmr.rmr_init(b"4562", rmr.RMR_MAX_RCV_BYTES, 0x00)
while rmr.rmr_ready(mrc) == 0:
    time.sleep(1)
    print("not yet ready")
rmr.rmr_set_stimeout(mrc, 2)
sbuf = rmr.rmr_alloc_msg(mrc, 256)

# capture ctrl-c
signal.signal(signal.SIGINT, signal_handler)

while True:
    # generate a random value between 1 and 256 bytes, then gen some random  bytes with several nulls thrown in
    for val in [
        "".join([random.choice(string.ascii_letters + string.digits) for n in range(random.randint(1, 256))]).encode("utf8"),
        b"\x00" + os.urandom(4) + b"\x00" + os.urandom(4) + b"\x00",
    ]:
        rmr.set_payload_and_length(val, sbuf)
        rmr.generate_and_set_transaction_id(sbuf)
        sbuf.contents.state = 0
        sbuf.contents.mtype = 0
        print("Pre send summary: {}".format(rmr.message_summary(sbuf)))
        sbuf = rmr.rmr_send_msg(mrc, sbuf)
        print("Post send summary: {}".format(rmr.message_summary(sbuf)))
        print("Waiting for return, will timeout after 2000ms")
        sbuf = rmr.rmr_torcv_msg(mrc, sbuf, 2000)
        summary = rmr.message_summary(sbuf)
        if summary["message state"] == 12:
            print("Nothing received yet")
        else:
            print("Ack Message received!: {}".format(summary))

    time.sleep(1)