def main():
parser = ArgumentParser(
description="Simple AMS example of subscription pull/consume")
parser.add_argument('--host',
type=str,
default='messaging-devel.argo.grnet.gr',
help='FQDN of AMS Service')
parser.add_argument('--token', type=str, required=True, help='Given token')
parser.add_argument('--project',
type=str,
required=True,
help='Project registered in AMS Service')
parser.add_argument('--subscription',
type=str,
required=True,
help='Subscription name')
args = parser.parse_args()
# initialize service with given token and project
ams = ArgoMessagingService(endpoint=args.host,
token=args.token,
project=args.project)
for msg in ams.pullack_sub(args.subscription,
retry=5,
retrysleep=15,
return_immediately=True):
try:
data = msg.get_data()
msgid = msg.get_msgid()
print('msgid={0}'.format(msgid))
print('msgdata={0}'.format(data))
except AmsException as e:
print(e)
raise SystemExit(1)
def main():
parser = ArgumentParser(description="Simple AMS message publish example")
parser.add_argument('--host',
type=str,
default='messaging-devel.argo.grnet.gr',
help='FQDN of AMS Service')
parser.add_argument('--token', type=str, required=True, help='Given token')
parser.add_argument('--project',
type=str,
required=True,
help='Project registered in AMS Service')
parser.add_argument('--topic', type=str, required=True, help='Given topic')
parser.add_argument('--subscription',
type=str,
required=True,
help='Subscription name')
parser.add_argument('--nummsgs',
type=int,
default=3,
help='Number of messages to pull and ack')
args = parser.parse_args()
ams = ArgoMessagingService(endpoint=args.host,
token=args.token,
project=args.project)
# static sleep between retry attempts
msg = AmsMessage(data='foo1', attributes={'bar1': 'baz1'}).dict()
try:
ret = ams.publish(args.topic, msg, retry=3, retrysleep=5, timeout=5)
print(ret)
except AmsException as e:
print(e)
# iptables -A OUTPUT -d messaging-devel.argo.grnet.gr -j DROP
ackids = list()
for id, msg in ams.pull_sub(args.subscription,
args.nummsgs,
retry=3,
retrysleep=5,
timeout=5):
data = msg.get_data()
msgid = msg.get_msgid()
attr = msg.get_attr()
print('msgid={0}, data={1}, attr={2}'.format(msgid, data, attr))
ackids.append(id)
if ackids:
ams.ack_sub(args.subscription,
ackids,
retry=3,
retrysleep=5,
timeout=5)
# backoff with each next retry attempt exponentially longer
msg = AmsMessage(data='foo2', attributes={'bar2': 'baz2'}).dict()
try:
ret = ams.publish(args.topic, msg, retry=3, retrybackoff=5, timeout=5)
print(ret)
except AmsException as e:
print(e)
# iptables -A OUTPUT -d messaging-devel.argo.grnet.gr -j DROP
ackids = list()
for id, msg in ams.pull_sub(args.subscription,
args.nummsgs,
retrybackoff=3,
retrysleep=5,
timeout=5):
data = msg.get_data()
msgid = msg.get_msgid()
attr = msg.get_attr()
print('msgid={0}, data={1}, attr={2}'.format(msgid, data, attr))
ackids.append(id)
if ackids:
ams.ack_sub(args.subscription, ackids)
# static sleep between retry attempts. this example uses consume context
# method that pull and acks msgs in one call.
msg = AmsMessage(data='foo3', attributes={'bar3': 'baz3'}).dict()
try:
ret = ams.publish(args.topic, msg, retry=3, retrysleep=5, timeout=5)
print(ret)
except AmsException as e:
print(e)
try:
msgs = ams.pullack_sub(args.subscription,
args.nummsgs,
retry=3,
retrysleep=5,
timeout=5)
for msg in msgs:
data = msg.get_data()
msgid = msg.get_msgid()
attr = msg.get_attr()
print('msgid={0}, data={1}, attr={2}'.format(msgid, data, attr))
except AmsException as e:
print(e)
