def test_send_rcv_subid_good():
"""
test send and receive where subid is used for routing
"""
pay = b"\x01\x00\x80"
test_mtype = 46656
test_subid = 777
# send a message
sbuf_send = rmr.rmr_alloc_msg(MRC_SEND,
3,
pay,
mtype=test_mtype,
sub_id=test_subid)
pre_send_summary = rmr.message_summary(sbuf_send)
sbuf_send = rmr.rmr_send_msg(MRC_SEND, sbuf_send)
send_summary = rmr.message_summary(sbuf_send)
# receive it in other context
time.sleep(0.5)
sbuf_rcv = rmr.rmr_alloc_msg(MRC_RCV, 3)
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv, 2000)
rcv_summary = rmr.message_summary(sbuf_rcv)
# asserts
assert send_summary[rmr.RMR_MS_MSG_STATE] == rcv_summary[
rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert send_summary[rmr.RMR_MS_MSG_STATUS] == rcv_summary[
rmr.RMR_MS_MSG_STATUS] == "RMR_OK"
assert pre_send_summary[rmr.RMR_MS_PAYLOAD] == rcv_summary[
rmr.RMR_MS_PAYLOAD] == pay
assert pre_send_summary[rmr.RMR_MS_MSG_TYPE] == rcv_summary[
rmr.RMR_MS_MSG_TYPE] == test_mtype
assert pre_send_summary[rmr.RMR_MS_SUB_ID] == rcv_summary[
rmr.RMR_MS_SUB_ID] == test_subid
def test_wh():
"""test the ability to send a message directly, without routing, via a wormhole"""
state = rmr.rmr_wh_state(MRC_SEND, 1)
assert state != rmr.RMR_OK
whid = rmr.rmr_wh_open(MRC_SEND, b"127.0.0.1:3563")
assert whid >= 0
state = rmr.rmr_wh_state(MRC_SEND, whid)
assert state == rmr.RMR_OK
sbuf_send = rmr.rmr_alloc_msg(MRC_SEND, SIZE)
_assert_new_sbuf(sbuf_send)
mtype = 1
sbuf_send.contents.mtype = mtype
payload = b"Birds like worms"
rmr.set_payload_and_length(payload, sbuf_send)
send_summary = rmr.message_summary(sbuf_send)
# send via call, but don't wait long for a response
rmr.rmr_wh_call(MRC_SEND, whid, sbuf_send, 1, 100)
# receive message in other context
time.sleep(0.5)
sbuf_rcv = rmr.rmr_alloc_msg(MRC_RCV, SIZE)
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv, 2000)
rcv_summary = rmr.message_summary(sbuf_rcv)
# asserts
assert send_summary[rmr.RMR_MS_MSG_STATE] == rcv_summary[
rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert send_summary[rmr.RMR_MS_MSG_TYPE] == rcv_summary[
rmr.RMR_MS_MSG_TYPE] == mtype
assert send_summary[rmr.RMR_MS_PAYLOAD] == rcv_summary[
rmr.RMR_MS_PAYLOAD] == payload
sbuf_send = rmr.rmr_alloc_msg(MRC_SEND, SIZE)
_assert_new_sbuf(sbuf_send)
mtype = 1
sbuf_send.contents.mtype = mtype
payload = b"Birds like worms"
rmr.set_payload_and_length(payload, sbuf_send)
# send without waiting for a response
rmr.rmr_wh_send_msg(MRC_SEND, whid, sbuf_send)
# receive message in other context
time.sleep(0.5)
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv, 2000)
rcv_summary = rmr.message_summary(sbuf_rcv)
# asserts
assert send_summary[rmr.RMR_MS_MSG_STATE] == rcv_summary[
rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert send_summary[rmr.RMR_MS_MSG_TYPE] == rcv_summary[
rmr.RMR_MS_MSG_TYPE] == mtype
assert send_summary[rmr.RMR_MS_PAYLOAD] == rcv_summary[
rmr.RMR_MS_PAYLOAD] == payload
rmr.rmr_wh_close(MRC_SEND, whid)
def test_rmr_set_get():
"""
test set functions
"""
sbuf = rmr.rmr_alloc_msg(MRC_SEND, SIZE)
_assert_new_sbuf(sbuf)
# test payload
pay = b"\x01\x00\x80"
rmr.set_payload_and_length(pay, sbuf)
summary = rmr.message_summary(sbuf)
assert summary[rmr.RMR_MS_PAYLOAD] == pay
assert summary[rmr.RMR_MS_PAYLOAD_LEN] == 3
# test transid (note we cant test payload because it's randomly gen)
assert summary[rmr.RMR_MS_TRN_ID] == b""
assert len(summary[rmr.RMR_MS_TRN_ID]) == 0
rmr.generate_and_set_transaction_id(sbuf)
summary = rmr.message_summary(sbuf)
assert summary[rmr.RMR_MS_TRN_ID] != b""
assert len(summary[rmr.RMR_MS_TRN_ID]) == 32
# test meid
assert rmr.rmr_get_meid(sbuf) == summary[rmr.RMR_MS_MEID] == b""
rmr.rmr_set_meid(sbuf, b"666\x01\x00\x01")
summary = rmr.message_summary(sbuf)
assert rmr.rmr_get_meid(sbuf) == summary[rmr.RMR_MS_MEID] == b"666\x01"
assert (len(summary[rmr.RMR_MS_MEID])) == 4
# exercise the logging setter; cannot test the result
rmr.rmr_set_vlevel(0)
def send_burst(mrc, fmt, mtype=1, num=13, counter=0):
"""
Internal function to support test_rcv_all.
Send a burst of messages optionally giving the type, payload
and number to send.
"""
sbuf_send = rmr.rmr_alloc_msg(MRC_SEND, SIZE) # seed message buffer
for i in range(num):
payload = bytes(fmt % counter, "UTF-8")
counter += 1
rmr.set_payload_and_length(payload, sbuf_send)
sbuf_send.contents.mtype = mtype
max_retries = 5
while max_retries > 0:
sbuf_send = rmr.rmr_send_msg(mrc, sbuf_send)
ms = rmr.message_summary(sbuf_send)
if ms[rmr.RMR_MS_MSG_STATE] != rmr.RMR_ERR_RETRY:
break
max_retries -= 1
time.sleep(0.75)
assert ms[rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert max_retries > 0
def rmr_send(self, payload, mtype, retries=100):
"""
Allocates a buffer, sets payload and mtype, and sends
Parameters
----------
payload: bytes
payload to set
mtype: int
message type
retries: int (optional)
Number of times to retry at the application level before excepting RMRFailure
Returns
-------
bool
whether or not the send worked after retries attempts
"""
sbuf = rmr.rmr_alloc_msg(vctx=self._mrc,
size=len(payload),
payload=payload,
gen_transaction_id=True,
mtype=mtype)
for _ in range(retries):
sbuf = rmr.rmr_send_msg(self._mrc, sbuf)
if sbuf.contents.state == 0:
self.rmr_free(sbuf)
return True
self.rmr_free(sbuf)
return False
def test_meid():
"""
test meid stringification
"""
sbuf = rmr.rmr_alloc_msg(MRC_SEND, SIZE)
rmr.rmr_set_meid(sbuf, b"\x01\x02")
assert rmr.rmr_get_meid(sbuf) == rmr.message_summary(sbuf)[
rmr.RMR_MS_MEID] == b"\x01\x02"
assert len(rmr.rmr_get_meid(sbuf)) == 2
rmr.rmr_set_meid(sbuf, b"\x00" * 31)
assert rmr.rmr_get_meid(sbuf) == rmr.message_summary(sbuf)[
rmr.RMR_MS_MEID] == b"" # NULL bytes get truncated
rmr.rmr_set_meid(sbuf, b"6" * 31)
assert rmr.rmr_get_meid(sbuf) == rmr.message_summary(sbuf)[
rmr.RMR_MS_MEID] == b"6" * 31 # string in string out
rmr.rmr_set_meid(sbuf, b"\x01\x02")
assert (rmr.rmr_get_meid(sbuf) ==
rmr.message_summary(sbuf)[rmr.RMR_MS_MEID] == b"\x01\x02"
) # Ctypes will chop at first nil, so expect only 2 bytes back
assert len(rmr.rmr_get_meid(sbuf)) == 2
# test that an exception is raised for buffers which are too long
with pytest.raises(exceptions.MeidSizeOutOfRange):
rmr.rmr_set_meid(sbuf, b"8" * 32)
def test_rcv_mock(monkeypatch):
"""
tests the rmr recieve mocking generator
"""
rmr_mocks.patch_rmr(monkeypatch)
sbuf = rmr.rmr_alloc_msg(MRC, SIZE)
# test rcv
monkeypatch.setattr(
"ricxappframe.rmr.rmr.rmr_rcv_msg",
rmr_mocks.rcv_mock_generator({"foo": "bar"}, 666, 0, True))
sbuf = rmr.rmr_rcv_msg(MRC, sbuf)
assert rmr.get_payload(sbuf) == b'{"foo": "bar"}'
assert sbuf.contents.mtype == 666
assert sbuf.contents.state == rmr.RMR_OK
assert sbuf.contents.len == 14
# test torcv, although the timeout portion is not currently mocked or tested
monkeypatch.setattr(
"ricxappframe.rmr.rmr.rmr_torcv_msg",
rmr_mocks.rcv_mock_generator({"foo": "bar"}, 666, 0, True, 50))
sbuf = rmr.rmr_torcv_msg(MRC, sbuf, 5)
assert rmr.get_payload(sbuf) == b'{"foo": "bar"}'
assert sbuf.contents.mtype == 666
assert sbuf.contents.state == rmr.RMR_OK
assert sbuf.contents.len == 14
def test_alloc_overlapping_flags():
"""test allocation with setting the transaction id"""
sbuf = rmr.rmr_alloc_msg(MRC_SEND,
SIZE,
gen_transaction_id=True,
fixed_transaction_id=b"6" * 32)
summary = rmr.message_summary(sbuf)
assert summary[rmr.RMR_MS_TRN_ID] == b"66666666666666666666666666666666"
def test_send_rcv():
"""
test send and receive
"""
pay = b"\x01\x00\x80"
# send a message
sbuf_send = rmr.rmr_alloc_msg(MRC_SEND, SIZE)
_assert_new_sbuf(sbuf_send)
rmr.set_payload_and_length(pay, sbuf_send)
sbuf_send.contents.mtype = 0
sbuf_send = rmr.rmr_send_msg(MRC_SEND, sbuf_send)
send_summary = rmr.message_summary(sbuf_send)
assert send_summary[
rmr.
RMR_MS_MSG_STATE] == rmr.RMR_OK # if send fails don't attempt receive
assert send_summary[rmr.RMR_MS_MSG_STATUS] == "RMR_OK"
time.sleep(0.5)
# receive it in other context
sbuf_rcv = rmr.rmr_alloc_msg(MRC_RCV, SIZE)
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv, 2000)
rcv_summary = rmr.message_summary(sbuf_rcv)
assert rcv_summary[rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert rcv_summary[rmr.RMR_MS_MSG_STATUS] == "RMR_OK"
assert rcv_summary[rmr.RMR_MS_MSG_TYPE] == 0
assert rcv_summary[rmr.RMR_MS_PAYLOAD] == pay
# send an ACK back
ack_pay = b"message received"
sbuf_rcv = rmr.rmr_rts_msg(MRC_RCV, sbuf_rcv, payload=ack_pay, mtype=6666)
rcv_ack_summary = rmr.message_summary(sbuf_rcv)
# have the sender receive it
sbuf_send = rmr.rmr_torcv_msg(MRC_SEND, sbuf_send, 2000)
send_ack_summary = rmr.message_summary(sbuf_send)
assert send_ack_summary[rmr.RMR_MS_MSG_STATE] == rcv_ack_summary[
rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert send_ack_summary[rmr.RMR_MS_MSG_STATUS] == rcv_ack_summary[
rmr.RMR_MS_MSG_STATUS] == "RMR_OK"
assert send_ack_summary[rmr.RMR_MS_PAYLOAD] == ack_pay
assert send_ack_summary[rmr.RMR_MS_MSG_TYPE] == 6666
def _receive_alarm_msg(action: AlarmAction):
"""
delays briefly, receives a message, checks the message type and action
"""
time.sleep(0.5)
sbuf_rcv = rmr.rmr_alloc_msg(MRC_RCV, SIZE)
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv, 2000)
rcv_summary = rmr.message_summary(sbuf_rcv)
assert rcv_summary[rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert rcv_summary[rmr.RMR_MS_MSG_TYPE] == alarm.RIC_ALARM_UPDATE
# parse JSON
data = json.loads(rcv_summary[rmr.RMR_MS_PAYLOAD].decode())
assert data[alarm.KEY_ALARM_ACTION] == action.name
def test_send_rcv_subid_bad_mtype():
"""
test send and receive where subid is used for routing but nobody receives this mtype
"""
sbuf_send = rmr.rmr_alloc_msg(MRC_SEND,
3,
b"\x01\x00\x80",
mtype=46657,
sub_id=777)
sbuf_send = rmr.rmr_send_msg(MRC_SEND, sbuf_send)
assert rmr.message_summary(sbuf_send)[
rmr.RMR_MS_MSG_STATE] == rmr.RMR_ERR_NOENDPT
assert rmr.message_summary(sbuf_send)[
rmr.RMR_MS_MSG_STATUS] == "RMR_ERR_NOENDPT"
def rmr_rcvall_msgs(mrc, pass_filter=None, timeout=0):
"""
Assembles an array of all messages which can be received without blocking
(but see the timeout parameter). Effectively drains the message queue if
RMR is started in mt-call mode, or draining any waiting TCP buffers. If
the pass_filter parameter is supplied, it is treated as one or more
message types to accept (pass through). Using the default, an empty list,
results in capturing all messages. If the timeout parameter is supplied
and is not zero, this call may block up to that number of milliseconds
waiting for a message to arrive. Using the default, zero, results in
non-blocking no-wait behavior.
Parameters
----------
mrc: ctypes c_void_p
Pointer to the RMR context
pass_filter: list (optional)
The message type(s) to capture.
timeout: int (optional)
The number of milliseconds to wait for a message to arrive.
Returns
-------
List of message summaries (dict), one for each message received; may be empty.
"""
new_messages = []
mbuf = rmr.rmr_alloc_msg(
mrc, 4096) # allocate and reuse a single buffer for RMR
while True:
mbuf = rmr.rmr_torcv_msg(
mrc, mbuf, timeout) # first call may have non-zero timeout
timeout = 0 # reset so subsequent calls do not wait
summary = rmr.message_summary(mbuf)
if summary[
rmr.
RMR_MS_MSG_STATUS] != "RMR_OK": # ok indicates msg received, stop on all other states
break
if pass_filter is None or len(pass_filter) == 0 or summary[
rmr.
RMR_MS_MSG_TYPE] in pass_filter: # no filter, or passes; capture it
new_messages.append(summary)
rmr.rmr_free_msg(mbuf) # free the single buffer to avoid leak
return new_messages
def test_rcv_timeout():
"""
test torcv; this is a scary test because if it fails... it doesn't fail, it will run forever!
We receive a message (though nothing has been sent) and make sure the function doesn't block forever.
There is no unit test for rmr_rcv_msg; too dangerous, that is a blocking call that may never return.
"""
sbuf_rcv = rmr.rmr_alloc_msg(MRC_RCV, SIZE)
start_rcv_sec = time.time()
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv,
500) # should wait a bit before returning
summary = rmr.message_summary(sbuf_rcv)
assert summary[rmr.RMR_MS_MSG_STATE] == rmr.RMR_ERR_TIMEOUT
assert summary[rmr.RMR_MS_MSG_STATUS] == "RMR_ERR_TIMEOUT"
assert (time.time() - start_rcv_sec > 0.5
) # test duration should be longer than the timeout
def _receive_metric_rpt(rptr: str):
"""
delays briefly, receives a message, checks the message type and reporter
"""
time.sleep(0.5)
sbuf_rcv = rmr.rmr_alloc_msg(MRC_RCV, SIZE)
sbuf_rcv = rmr.rmr_torcv_msg(MRC_RCV, sbuf_rcv, 2000)
rcv_summary = rmr.message_summary(sbuf_rcv)
mdc_logger.debug("Receive result is {}".format(
rcv_summary[rmr.RMR_MS_MSG_STATE]))
assert rcv_summary[rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert rcv_summary[rmr.RMR_MS_MSG_TYPE] == metric.RIC_METRICS
# parse JSON
data = json.loads(rcv_summary[rmr.RMR_MS_PAYLOAD].decode())
mdc_logger.debug("Received reporter {}".format(data[metric.KEY_REPORTER]))
assert data[metric.KEY_REPORTER] == rptr
def rmr_rcvall_msgs_raw(mrc, pass_filter=None, timeout=0):
"""
Same as rmr_rcvall_msgs, but answers tuples with the raw sbuf.
Useful if return-to-sender (rts) functions are required.
Parameters
----------
mrc: ctypes c_void_p
Pointer to the RMR context
pass_filter: list (optional)
The message type(s) to capture.
timeout: int (optional)
The number of milliseconds to wait for a message to arrive.
Returns
-------
list of tuple:
List of tuples [(S, sbuf),...] where S is a message summary (dict), and sbuf is the raw message; may be empty.
The caller MUST call rmr.rmr_free_msg(sbuf) when finished with each sbuf to prevent memory leaks!
"""
new_messages = []
while True:
mbuf = rmr.rmr_alloc_msg(
mrc, 4096) # allocate a new buffer for every message
mbuf = rmr.rmr_torcv_msg(
mrc, mbuf, timeout) # first call may have non-zero timeout
timeout = 0 # reset so subsequent calls do not wait
summary = rmr.message_summary(mbuf)
if summary[rmr.RMR_MS_MSG_STATUS] != "RMR_OK":
rmr.rmr_free_msg(mbuf) # free the failed-to-receive buffer
break
if pass_filter is None or len(
pass_filter
) == 0 or mbuf.contents.mtype in pass_filter: # no filter, or passes; capture it
new_messages.append(
(summary,
mbuf)) # caller is responsible for freeing the buffer
else:
rmr.rmr_free_msg(mbuf) # free the filtered-out message buffer
return new_messages
def _send_msg(self, pay, mtype, subid):
"""
Creates and sends a message via RMR's send-message feature with the specified payload
using the specified message type and subscription ID.
"""
sbuf = rmr.rmr_alloc_msg(self.mrc, len(pay), payload=pay, gen_transaction_id=True, mtype=mtype, sub_id=subid)
sbuf.contents.sub_id = subid
pre_send_summary = rmr.message_summary(sbuf)
for _ in range(0, RETRY_TIMES):
mdc_logger.debug("_send_msg: sending: {}".format(pre_send_summary))
sbuf = rmr.rmr_send_msg(self.mrc, sbuf)
msg_state = self._assert_good_send(sbuf, pre_send_summary)
mdc_logger.debug("_send_msg: result message state: {}".format(msg_state))
if msg_state != rmr.RMR_ERR_RETRY:
break
rmr.rmr_free_msg(sbuf)
if msg_state != rmr.RMR_OK:
mdc_logger.warning("_send_msg: failed after {} retries".format(RETRY_TIMES))
def test_alloc(monkeypatch):
"""
test alloc with all fields set
"""
rmr_mocks.patch_rmr(monkeypatch)
sbuf = rmr.rmr_alloc_msg(MRC,
SIZE,
payload=b"foo",
gen_transaction_id=True,
mtype=5,
meid=b"mee",
sub_id=234,
fixed_transaction_id=b"t" * 32)
summary = rmr.message_summary(sbuf)
assert summary[rmr.RMR_MS_PAYLOAD] == b"foo"
assert summary[rmr.RMR_MS_TRN_ID] == b"t" * 32
assert summary[rmr.RMR_MS_MSG_TYPE] == 5
assert summary[rmr.RMR_MS_MEID] == b"mee"
assert summary[rmr.RMR_MS_SUB_ID] == 234
def test_send_mock(monkeypatch):
"""
tests the send mock
"""
monkeypatch.setattr("ricxappframe.rmr.rmr.rmr_send_msg",
rmr_mocks.send_mock_generator(12))
rmr_mocks.patch_rmr(monkeypatch)
sbuf = rmr.rmr_alloc_msg(MRC, SIZE)
rmr.set_payload_and_length("testttt".encode("utf8"), sbuf)
expected = {
rmr.RMR_MS_MEID: None,
rmr.RMR_MS_MSG_SOURCE: "localtest:80",
rmr.RMR_MS_MSG_STATE: rmr.RMR_OK,
rmr.RMR_MS_MSG_STATUS: "RMR_OK",
rmr.RMR_MS_MSG_TYPE: 0,
rmr.RMR_MS_PAYLOAD: b"testttt",
rmr.RMR_MS_PAYLOAD_LEN: 7,
rmr.RMR_MS_PAYLOAD_MAX: 4096,
rmr.RMR_MS_SUB_ID: 0,
}
_partial_dict_comparison(expected, rmr.message_summary(sbuf))
# set the mtype
sbuf.contents.mtype = 666
# send it (the fake send sets the state, and touches nothing else)
sbuf = rmr.rmr_send_msg(MRC, sbuf)
expected = {
rmr.RMR_MS_MEID: None,
rmr.RMR_MS_MSG_SOURCE: "localtest:80",
rmr.RMR_MS_MSG_STATE: rmr.RMR_ERR_TIMEOUT,
rmr.RMR_MS_MSG_STATUS: "RMR_ERR_TIMEOUT",
rmr.RMR_MS_MSG_TYPE: 666,
rmr.RMR_MS_PAYLOAD: None,
rmr.RMR_MS_PAYLOAD_LEN: 7,
rmr.RMR_MS_PAYLOAD_MAX: 4096,
rmr.RMR_MS_SUB_ID: 0,
}
_partial_dict_comparison(expected, rmr.message_summary(sbuf))
def send_report(self, msg: MetricsReport):
"""
Serializes the MetricsReport dict to JSON and sends the result via RMR.
Raises an exception if the report has no MetricsData items.
Parameters
----------
msg: MetricsReport (required)
Dictionary with measurement data to encode and send
Returns
-------
bool
True if the send succeeded (possibly with retries), False otherwise
"""
if KEY_DATA not in msg or len(msg[KEY_DATA]) == 0:
raise EmptyReport
payload = json.dumps(msg).encode()
mdc_logger.debug("send_report: payload is {}".format(payload))
sbuf = rmr.rmr_alloc_msg(vctx=self.vctx,
size=len(payload),
payload=payload,
mtype=RIC_METRICS,
gen_transaction_id=True)
for _ in range(0, RETRIES):
sbuf = rmr.rmr_send_msg(self.vctx, sbuf)
post_send_summary = rmr.message_summary(sbuf)
mdc_logger.debug("send_report: try {0} result is {1}".format(
_, post_send_summary[rmr.RMR_MS_MSG_STATE]))
# stop trying if RMR does not indicate retry
if post_send_summary[rmr.RMR_MS_MSG_STATE] != rmr.RMR_ERR_RETRY:
break
rmr.rmr_free_msg(sbuf)
if post_send_summary[rmr.RMR_MS_MSG_STATE] != rmr.RMR_OK:
mdc_logger.warning(
"send_report: failed after {} retries".format(RETRIES))
return False
return True
def test_alloc_fancy():
"""test allocation with setting payload, trans, mtype, subid"""
pay = b"yoo\x01\x00\x80"
sbuf = rmr.rmr_alloc_msg(MRC_SEND,
SIZE,
payload=pay,
gen_transaction_id=True,
mtype=14,
meid=b"asdf",
sub_id=654321)
summary = rmr.message_summary(sbuf)
assert summary[rmr.RMR_MS_PAYLOAD] == pay
assert summary[rmr.RMR_MS_PAYLOAD_LEN] == 6
assert summary[
rmr.
RMR_MS_TRN_ID] != b"" # hard to test what it will be, but make sure not empty
assert len(summary[rmr.RMR_MS_TRN_ID]) == 32
assert summary[rmr.RMR_MS_MSG_STATE] == rmr.RMR_OK
assert summary[rmr.RMR_MS_MSG_TYPE] == sbuf.contents.mtype == 14
assert rmr.rmr_get_meid(sbuf) == summary[rmr.RMR_MS_MEID] == b"asdf"
assert sbuf.contents.sub_id == summary[rmr.RMR_MS_SUB_ID] == 654321
def test_resize_payload():
"""test the ability to insert a larger payload into an existing message"""
mtype = 99
subid = 100
mbuf = rmr.rmr_alloc_msg(MRC_SEND,
25) # allocate buffer with small payload
mbuf.contents.mtype = mtype # type and sub-id should not change
mbuf.contents.sub_id = subid
long_payload = b"This is a long payload that should force the message buffer to be reallocated"
rmr.set_payload_and_length(long_payload, mbuf)
summary = rmr.message_summary(mbuf)
assert summary[rmr.RMR_MS_PAYLOAD_MAX] >= len(
long_payload) # RMR may allocate a larger payload space
assert summary[rmr.RMR_MS_PAYLOAD_LEN] == len(
long_payload) # however, the length must be exactly the same
assert summary[
rmr.
RMR_MS_MSG_TYPE] == mtype # both mtype and sub-id should be preserved in new
assert summary[rmr.RMR_MS_SUB_ID] == subid
def _rmr_send_alarm(self, msg: dict):
"""
Serializes the dict and sends the result via RMR using a predefined message
type to the wormhole initialized at start.
Parameters
----------
msg: dict
Dictionary with alarm message to encode and send
Returns
-------
bool
True if the send succeeded (possibly with retries), False otherwise
"""
payload = json.dumps(msg).encode()
mdc_logger.debug("_rmr_send_alarm: payload is {}".format(payload))
sbuf = rmr.rmr_alloc_msg(vctx=self.vctx,
size=len(payload),
payload=payload,
mtype=RIC_ALARM_UPDATE,
gen_transaction_id=True)
for _ in range(0, RETRIES):
sbuf = rmr.rmr_wh_send_msg(self.vctx, self._wormhole_id, sbuf)
post_send_summary = rmr.message_summary(sbuf)
mdc_logger.debug("_rmr_send_alarm: try {0} result is {1}".format(
_, post_send_summary[rmr.RMR_MS_MSG_STATE]))
# stop trying if RMR does not indicate retry
if post_send_summary[rmr.RMR_MS_MSG_STATE] != rmr.RMR_ERR_RETRY:
break
rmr.rmr_free_msg(sbuf)
if post_send_summary[rmr.RMR_MS_MSG_STATE] != rmr.RMR_OK:
mdc_logger.warning(
"_rmr_send_alarm: failed after {} retries".format(RETRIES))
return False
return True
# Demonstrate RMR 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)
def test_bad_buffer():
"""test that we get a proper exception when the buffer has a null pointer"""
with pytest.raises(exceptions.BadBufferAllocation):
rmr.rmr_alloc_msg(None, 4096)
