MQRC_ENVIRONMENT_ERROR on commit - python-3.x

Question

I'm experiencing an issue while trying to use pymqi to send messages to IBM MQ.
A project i'm working on
Reads from DB2
Prepares data for WorkerProcess
WorkerProcess does some decision based on that data and sens a message to MQ
When the WorkerProcess tries to commit the message for MQ, I get an error:
Stacktrace:
worker_process.py:
self.mq.commit()
mq_service.py:
self.qmgr.commit()
pymqi/__init__.py line 1689, in commit
raise MQMIError (rv[0], rv[1])
pymqi.MQMIError: MQI Error. Comp: 2, Reason 2012: FAILED: MQRC_ENVIRONMENT_ERROR
Code and stack trace has been typed by hand and can contain typos.
Bellow code is a pseudo code of what I'm doing.
Any help and/or advice is greatly appreciated.
main.py:
c_processors = []
for i in range(num_of_proccessors):
p = WorkerProcess()
p.start()
c_processors.append(p)
for p in c_processors:
p.join()
worker_process.py
class WorkerProcess(Process):
def __init__(self):
Process.__init__(self)
self.mq = MQService()
def run(self):
self.mq.send_message('test')
self.mq.commit()
self.mq.close_connection()
mq_service.py
class MQService():
def __init__(self):
self.connect()
self.pmd = pymqi.MD()
self.pmd.Format = pymqi.CMQC.MQFMT_STRING
self.pmo = pymqi.PMO(Options=pymqi.CMQC.MQPMO_FAIL_IF_QUIESCING)
self.pmo.Options |= pymqi.CMQC.MQGMO_SYNCPOINT
def connect(self):
self._connect_to_qmgr(manager,chanel,host,port,user,password) #these arguments are retrieved from config
self._q = pymqi.Queue(self.qmgr, queue_name)
def _connect_to_qmgr(self,manager,chanel,host,port,user,password):
self.qmgr = pymqi.QueueManager(None)
_cd = pymqi.CD()
_cd.ChannelName = channel.encode('utf-8')
_cd.ConnectionName = f"{host} ({port})".encode('utf-8')
_cd.ChannelType = pymqi.CMQC.MQCHT_CLNTCONN
_cd.TransportType = pymqi.CMQC.MQXPT_TCP
_connect_options = pymqi.CMQC.MQCNO_HANDLE_SHARE_BLOCK
_qmgr.connect_with_options(manager, cd=_cd, opts=_connect_options, user=user, password=password)
def send_message(self, message):
self._q.put(message, self.pmd, self.pmo)
def commit(self):
self.qmgr.commit()
def rollback(self):
self.qmgr.backout()
def close_connection(self):
self.qmgr.disconnect()
EDIT:
Additional information:
I'm running IBM MQ client version 9.1.0.1.
There are no errors in AMQERR0*.LOG files.
LD_LIBRARY_PATH is set
This error showed while refactoring the code.
Below is the code that is working (before refactoring):
Some arguments in function signature are replaced with (args) for the sake of brevity and readability*
main.py:
def connect_to_mq():
return MQService(args*) # these arguments are read from Config file
def process_chunk(args*):
_mq = connect_to_mq()
_mq.send_message('test')
_mq.commit()
_mq.close_connection()
c_processors = []
for i in range(num_of_proccessors):
p = Process(target=process_chunk, args=(args*))
p.start()
c_processors.append(p)
for p in c_processors:
p.join()
mq_service.py
class MQService():
def __init__(self, args*):
self.pmd = pymqi.MD()
self.pmd.Format = pymqi.CMQC.MQFMT_STRING
self.pmo = pymqi.PMO(Options=pymqi.CMQC.MQPMO_FAIL_IF_QUIESCING)
self.pmo.Options |= pymqi.CMQC.MQGMO_SYNCPOINT
self.connect_to_qmgr(args*)
self.connect_to_queue(args*)
def _connect_to_qmgr(self,manager,chanel,host,port,user,password):
self.qmgr = pymqi.connect(manager,
chanel,
"%s (%s)" % (host, port),
user=user,
password=password)
def connect_to_queue(q_name):
self._q = pymqi.Queue(self.qmgr, q_name)
def send_message(self, message):
self._q.put(message, self.pmd, self.pmo)
def commit(self):
self.qmgr.commit()
def rollback(self):
self.qmgr.backout()
def close_connection(self):
self.qmgr.disconnect()