class InstrumentDriverTestCase(IonIntegrationTestCase):
"""
Base class for instrument driver tests
"""
# configuration singleton
_test_config = InstrumentDriverTestConfig()
@classmethod
def initialize(cls, *args, **kwargs):
"""
Initialize the test_configuration singleton
"""
cls._test_config.initialize(*args, **kwargs)
# Port agent process object.
port_agent = None
def setUp(self):
"""
@brief Setup test cases.
"""
log.debug("InstrumentDriverTestCase setUp")
# Test to ensure we have initialized our test config
if not self._test_config.initialized:
return TestNotInitialized(
msg=
"Tests non initialized. Missing InstrumentDriverTestCase.initalize(...)?"
)
self.clear_events()
self.init_comm_config()
def tearDown(self):
"""
@brief Test teardown
"""
log.debug("InstrumentDriverTestCase tearDown")
def clear_events(self):
"""
@brief Clear the event list.
"""
self.events = []
def event_received(self, evt):
"""
@brief Simple callback to catch events from the driver for verification.
"""
self.events.append(evt)
def comm_config_file(self):
"""
@brief Return the path the the driver comm config yaml file.
@return if comm_config.yml exists return the full path
"""
repo_dir = Config().get('working_repo')
driver_path = self._test_config.driver_module
p = re.compile('\.')
driver_path = p.sub('/', driver_path)
abs_path = "%s/%s/%s" % (repo_dir, os.path.dirname(driver_path),
CommConfig.config_filename())
log.debug(abs_path)
return abs_path
def init_comm_config(self):
"""
@brief Create the comm config object by reading the comm_config.yml file.
"""
log.info("Initialize comm config")
config_file = self.comm_config_file()
log.debug(" -- reading comm config from: %s" % config_file)
if not os.path.exists(config_file):
raise TestNoCommConfig(
msg=
"Missing comm config. Try running start_driver or switch_driver"
)
self.comm_config = CommConfig.get_config_from_file(config_file)
def init_port_agent(self):
"""
@brief Launch the driver process and driver client. This is used in the
integration and qualification tests. The port agent abstracts the physical
interface with the instrument.
@retval return the pid to the logger process
"""
log.info("Startup Port Agent")
# Create port agent object.
this_pid = os.getpid()
# Working dir and delim are hard coded here because this launch process
# will change with the new port agent.
self.port_agent = EthernetDeviceLogger.launch_process(
self.comm_config.device_addr, self.comm_config.device_port,
self._test_config.working_dir, self._test_config.delimeter,
this_pid)
pid = self.port_agent.get_pid()
while not pid:
gevent.sleep(.1)
pid = self.port_agent.get_pid()
port = self.port_agent.get_port()
while not port:
gevent.sleep(.1)
port = self.port_agent.get_port()
log.info('Started port agent pid %d listening at port %d' %
(pid, port))
return port
def stop_port_agent(self):
"""
Stop the port agent.
"""
if self.port_agent:
pid = self.port_agent.get_pid()
if pid:
log.info('Stopping pagent pid %i' % pid)
self.port_agent.stop()
else:
log.info('No port agent running.')
def init_driver_process_client(self):
"""
@brief Launch the driver process and driver client
@retval return driver process and driver client object
"""
log.info("Startup Driver Process")
this_pid = os.getpid()
(dvr_proc, cmd_port, evt_port) = ZmqDriverProcess.launch_process(
self._test_config.driver_module, self._test_config.driver_class,
self._test_config.working_dir, this_pid)
self.driver_process = dvr_proc
log.info('Started driver process for %d %d %s %s' %
(cmd_port, evt_port, self._test_config.driver_module,
self._test_config.driver_class))
log.info('Driver process pid %d' % self.driver_process.pid)
# Create driver client.
self.driver_client = ZmqDriverClient('localhost', cmd_port, evt_port)
log.info('Created driver client for %d %d %s %s' %
(cmd_port, evt_port, self._test_config.driver_module,
self._test_config.driver_class))
# Start client messaging.
self.driver_client.start_messaging(self.event_received)
log.info('Driver messaging started.')
gevent.sleep(.5)
def stop_driver_process_client(self):
"""
Stop the driver_process.
"""
if self.driver_process:
log.info('Stopping driver process pid %d' %
self.driver_process.pid)
if self.driver_client:
self.driver_client.done()
self.driver_process.wait()
self.driver_client = None
else:
try:
log.info('Killing driver process.')
self.driver_process.kill()
except OSError:
pass
self.driver_process = None
###
# Private Methods
###
def _kill_process(self):
"""
@brief Ensure a driver process has been killed
"""
process = self._driver_process
pid = process.pid
log.debug("Killing driver process. PID: %d" % pid)
# For some reason process.kill and process.terminate didn't actually kill the process.
# that's whay we had to use the os kill command. We have to call process.wait so that
# the returncode attribute is updated which could be blocking. process.poll didn't
# seem to work.
for sig in [signal.SIGTERM, signal.SIGKILL]:
if (process.returncode != None):
break
else:
log.debug("Sending signal %s to driver process" % sig)
os.kill(pid, sig)
process.wait()
if (process.returncode == None):
raise Exception(
"TODO: Better exception. Failed to kill driver process. PID: %d"
% self._driver_process.pid)
class InstrumentDriverTestCase(IonIntegrationTestCase):
"""
Base class for instrument driver tests
"""
# configuration singleton
_test_config = InstrumentDriverTestConfig()
@classmethod
def initialize(cls, *args, **kwargs):
"""
Initialize the test_configuration singleton
"""
cls._test_config.initialize(*args, **kwargs)
# Port agent process object.
port_agent = None
def setUp(self):
"""
@brief Setup test cases.
"""
log.debug("InstrumentDriverTestCase setUp")
# Test to ensure we have initialized our test config
if not self._test_config.initialized:
return TestNotInitialized(msg="Tests non initialized. Missing InstrumentDriverTestCase.initalize(...)?")
self.clear_events()
self.init_comm_config()
def tearDown(self):
"""
@brief Test teardown
"""
log.debug("InstrumentDriverTestCase tearDown")
def clear_events(self):
"""
@brief Clear the event list.
"""
self.events = []
def event_received(self, evt):
"""
@brief Simple callback to catch events from the driver for verification.
"""
self.events.append(evt)
def comm_config_file(self):
"""
@brief Return the path the the driver comm config yaml file.
@return if comm_config.yml exists return the full path
"""
repo_dir = Config().get("working_repo")
driver_path = self._test_config.driver_module
p = re.compile("\.")
driver_path = p.sub("/", driver_path)
abs_path = "%s/%s/%s" % (repo_dir, os.path.dirname(driver_path), CommConfig.config_filename())
log.debug(abs_path)
return abs_path
def init_comm_config(self):
"""
@brief Create the comm config object by reading the comm_config.yml file.
"""
log.info("Initialize comm config")
config_file = self.comm_config_file()
log.debug(" -- reading comm config from: %s" % config_file)
if not os.path.exists(config_file):
raise TestNoCommConfig(msg="Missing comm config. Try running start_driver or switch_driver")
self.comm_config = CommConfig.get_config_from_file(config_file)
def init_port_agent(self):
"""
@brief Launch the driver process and driver client. This is used in the
integration and qualification tests. The port agent abstracts the physical
interface with the instrument.
@retval return the pid to the logger process
"""
log.info("Startup Port Agent")
# Create port agent object.
this_pid = os.getpid()
# Working dir and delim are hard coded here because this launch process
# will change with the new port agent.
self.port_agent = EthernetDeviceLogger.launch_process(
self.comm_config.device_addr,
self.comm_config.device_port,
self._test_config.working_dir,
self._test_config.delimeter,
this_pid,
)
pid = self.port_agent.get_pid()
while not pid:
gevent.sleep(0.1)
pid = self.port_agent.get_pid()
port = self.port_agent.get_port()
while not port:
gevent.sleep(0.1)
port = self.port_agent.get_port()
log.info("Started port agent pid %d listening at port %d" % (pid, port))
return port
def stop_port_agent(self):
"""
Stop the port agent.
"""
if self.port_agent:
pid = self.port_agent.get_pid()
if pid:
log.info("Stopping pagent pid %i" % pid)
self.port_agent.stop()
else:
log.info("No port agent running.")
def init_driver_process_client(self):
"""
@brief Launch the driver process and driver client
@retval return driver process and driver client object
"""
log.info("Startup Driver Process")
this_pid = os.getpid()
(dvr_proc, cmd_port, evt_port) = ZmqDriverProcess.launch_process(
self._test_config.driver_module, self._test_config.driver_class, self._test_config.working_dir, this_pid
)
self.driver_process = dvr_proc
log.info(
"Started driver process for %d %d %s %s"
% (cmd_port, evt_port, self._test_config.driver_module, self._test_config.driver_class)
)
log.info("Driver process pid %d" % self.driver_process.pid)
# Create driver client.
self.driver_client = ZmqDriverClient("localhost", cmd_port, evt_port)
log.info(
"Created driver client for %d %d %s %s"
% (cmd_port, evt_port, self._test_config.driver_module, self._test_config.driver_class)
)
# Start client messaging.
self.driver_client.start_messaging(self.event_received)
log.info("Driver messaging started.")
gevent.sleep(0.5)
def stop_driver_process_client(self):
"""
Stop the driver_process.
"""
if self.driver_process:
log.info("Stopping driver process pid %d" % self.driver_process.pid)
if self.driver_client:
self.driver_client.done()
self.driver_process.wait()
self.driver_client = None
else:
try:
log.info("Killing driver process.")
self.driver_process.kill()
except OSError:
pass
self.driver_process = None
###
# Private Methods
###
def _kill_process(self):
"""
@brief Ensure a driver process has been killed
"""
process = self._driver_process
pid = process.pid
log.debug("Killing driver process. PID: %d" % pid)
# For some reason process.kill and process.terminate didn't actually kill the process.
# that's whay we had to use the os kill command. We have to call process.wait so that
# the returncode attribute is updated which could be blocking. process.poll didn't
# seem to work.
for sig in [signal.SIGTERM, signal.SIGKILL]:
if process.returncode != None:
break
else:
log.debug("Sending signal %s to driver process" % sig)
os.kill(pid, sig)
process.wait()
if process.returncode == None:
raise Exception(
"TODO: Better exception. Failed to kill driver process. PID: %d" % self._driver_process.pid
)
class CiLogger(object):
"""
ResourceAgent derived class for the CI Logger. This class
interfaces CG components to driver resources in the ION
system. It provides support for the CG DCL_Control and Data_Mgr interfaces
and translates/forwards these on to the CI driver and CG_Logger.
"""
def __init__(self):
log.debug("CiLogger.__init__:")
# start driver
driver_config = {
'svr_addr': 'localhost',
'cmd_port': 5556,
'evt_port': 5557,
'dvr_mod': 'ion.agents.instrument.drivers.sbe37.sbe37_driver',
'dvr_cls': 'SBE37Driver'
}
result = self._start_driver(driver_config)
if not isinstance(result, int):
log.error("CiLogger.__init__: " + result[1])
return
log.info("CiLogger.__init__: started driver with process id of " +
str(result))
# configure driver and have it start the port agent
comms_config = {
SBE37Channel.CTD: {
'method': 'ethernet',
'device_addr': 'sbe37-simulator.oceanobservatories.org',
'device_port': 4001,
'server_addr': 'localhost',
'server_port': 8888
}
}
cfg_result = self._dvr_client.cmd_dvr('configure', comms_config)
channels = [
key for (key, val) in cfg_result.iteritems()
if not InstErrorCode.is_error(val)
]
con_result = self._dvr_client.cmd_dvr('connect', channels)
result = cfg_result.copy()
try:
for (key, val) in con_result.iteritems():
result[key] = val
except:
log.error("CiLogger.__init__: driver connection failure - " +
str(con_result))
return
self._active_channels = self._dvr_client.cmd_dvr('get_active_channels')
if len(self._active_channels) <= 0:
log.error(
"CiLogger.__init__: driver connection failure - no active channels"
)
return
log.info("CiLogger.__init__: driver connected to instrument " +
comms_config[SBE37Channel.CTD]['device_addr'])
def start_streaming(self):
log.info("CiLogger.start_streaming():")
return CgMsgTypes.ACK, "Instrument started"
###############################################################################
# Event callback and handling.
###############################################################################
def evt_recv(self, evt):
"""
Callback to receive asynchronous driver events.
@param evt The driver event received.
"""
log.info('CiLogger.evt_recv(): received driver event %s', str(evt))
# TODO: send 'sample' events to the CG_Logger
###############################################################################
# Private helpers.
###############################################################################
def _go_inactive(self, *args, **kwargs):
"""
Handler for go_inactive agent command in idle state.
Attempt to disconnect and initialize all active driver channels.
Swtich to inactive state if successful.
"""
channels = self._dvr_client.cmd_dvr('get_active_channels')
dis_result = self._dvr_client.cmd_dvr('disconnect', channels)
[
key for (key, val) in dis_result.iteritems()
if not InstErrorCode.is_error(val)
]
self._stop_driver()
def _go_streaming(self, *args, **kwargs):
"""
Handler for go_streaming agent command in observatory state.
Send start autosample command to driver and switch to streaming
state if successful.
"""
result = self._dvr_client.cmd_dvr('start_autosample', *args, **kwargs)
if isinstance(result, dict):
if any([val == None for val in result.values()]):
next_state = InstrumentAgentState.STREAMING
def _go_observatory(self, *args, **kwargs):
"""
Handler for go_observatory agent command within streaming state. Command
driver to stop autosampling, and switch to observatory mode if
successful.
"""
result = self._dvr_client.cmd_dvr('stop_autosample', *args, **kwargs)
if isinstance(result, dict):
if all([val == None for val in result.values()]):
next_state = InstrumentAgentState.OBSERVATORY
def _start_driver(self, dvr_config):
"""
Start the driver process and driver client.
@param dvr_config The driver configuration.
@param comms_config The driver communications configuration.
@retval None or error.
"""
try:
cmd_port = dvr_config['cmd_port']
evt_port = dvr_config['evt_port']
dvr_mod = dvr_config['dvr_mod']
dvr_cls = dvr_config['dvr_cls']
svr_addr = dvr_config['svr_addr']
except (TypeError, KeyError):
# Not a dict. or missing required parameter.
log.error(
'CiLogger._start_driver(): missing required parameter in start_driver.'
)
return InstErrorCode.REQUIRED_PARAMETER
# Launch driver process.
self._dvr_proc = ZmqDriverProcess.launch_process(
cmd_port, evt_port, dvr_mod, dvr_cls)
self._dvr_proc.poll()
if self._dvr_proc.returncode:
# Error proc didn't start.
log.error(
'CiLogger._start_driver(): driver process did not launch.')
return InstErrorCode.AGENT_INIT_FAILED
log.info('CiLogger._start_driver(): launched driver process.')
# Create client and start messaging.
self._dvr_client = ZmqDriverClient(svr_addr, cmd_port, evt_port)
self._dvr_client.start_messaging(self.evt_recv)
log.info('CiLogger._start_driver(): driver process client started.')
time.sleep(1)
try:
retval = self._dvr_client.cmd_dvr('process_echo', 'Test.')
log.info(
'CiLogger._start_driver(): driver process echo test: %s.' %
str(retval))
except Exception:
self._dvr_proc.terminate()
self._dvr_proc.wait()
self._dvr_proc = None
self._dvr_client = None
log.error(
'CiLogger._start_driver(): error commanding driver process.')
return InstErrorCode.AGENT_INIT_FAILED
else:
log.info('CiLogger._start_driver(): started its driver.')
return self._dvr_proc.pid
def _stop_driver(self):
"""
Stop the driver process and driver client.
@retval None.
"""
if self._dvr_client:
self._dvr_client.done()
self._dvr_proc.wait()
self._dvr_proc = None
self._dvr_client = None
log.info('CiLogger._stop_driver(): stopped its driver.')
time.sleep(1)
class CiLogger(object):
"""
ResourceAgent derived class for the CI Logger. This class
interfaces CG components to driver resources in the ION
system. It provides support for the CG DCL_Control and Data_Mgr interfaces
and translates/forwards these on to the CI driver and CG_Logger.
"""
def __init__(self):
log.debug("CiLogger.__init__:")
# start driver
driver_config = {'svr_addr': 'localhost',
'cmd_port': 5556,
'evt_port': 5557,
'dvr_mod': 'ion.agents.instrument.drivers.sbe37.sbe37_driver',
'dvr_cls': 'SBE37Driver'}
result = self._start_driver(driver_config)
if not isinstance(result, int):
log.error("CiLogger.__init__: " + result[1])
return
log.info("CiLogger.__init__: started driver with process id of " + str(result))
# configure driver and have it start the port agent
comms_config = {SBE37Channel.CTD: {'method':'ethernet',
'device_addr': 'sbe37-simulator.oceanobservatories.org',
'device_port': 4001,
'server_addr': 'localhost',
'server_port': 8888}
}
cfg_result = self._dvr_client.cmd_dvr('configure', comms_config)
channels = [key for (key, val) in cfg_result.iteritems() if not
InstErrorCode.is_error(val)]
con_result = self._dvr_client.cmd_dvr('connect', channels)
result = cfg_result.copy()
try:
for (key, val) in con_result.iteritems():
result[key] = val
except:
log.error("CiLogger.__init__: driver connection failure - " + str(con_result))
return
self._active_channels = self._dvr_client.cmd_dvr('get_active_channels')
if len(self._active_channels) <= 0:
log.error("CiLogger.__init__: driver connection failure - no active channels")
return
log.info("CiLogger.__init__: driver connected to instrument " + comms_config[SBE37Channel.CTD]['device_addr'])
def start_streaming(self):
log.info("CiLogger.start_streaming():")
return CgMsgTypes.ACK, "Instrument started"
###############################################################################
# Event callback and handling.
###############################################################################
def evt_recv(self, evt):
"""
Callback to receive asynchronous driver events.
@param evt The driver event received.
"""
log.info('CiLogger.evt_recv(): received driver event %s', str(evt))
# TODO: send 'sample' events to the CG_Logger
###############################################################################
# Private helpers.
###############################################################################
def _go_inactive(self, *args, **kwargs):
"""
Handler for go_inactive agent command in idle state.
Attempt to disconnect and initialize all active driver channels.
Swtich to inactive state if successful.
"""
channels = self._dvr_client.cmd_dvr('get_active_channels')
dis_result = self._dvr_client.cmd_dvr('disconnect', channels)
[key for (key, val) in dis_result.iteritems() if not
InstErrorCode.is_error(val)]
self._stop_driver()
def _go_streaming(self, *args, **kwargs):
"""
Handler for go_streaming agent command in observatory state.
Send start autosample command to driver and switch to streaming
state if successful.
"""
result = self._dvr_client.cmd_dvr('start_autosample', *args, **kwargs)
if isinstance(result, dict):
if any([val == None for val in result.values()]):
next_state = InstrumentAgentState.STREAMING
def _go_observatory(self, *args, **kwargs):
"""
Handler for go_observatory agent command within streaming state. Command
driver to stop autosampling, and switch to observatory mode if
successful.
"""
result = self._dvr_client.cmd_dvr('stop_autosample', *args, **kwargs)
if isinstance(result, dict):
if all([val == None for val in result.values()]):
next_state = InstrumentAgentState.OBSERVATORY
def _start_driver(self, dvr_config):
"""
Start the driver process and driver client.
@param dvr_config The driver configuration.
@param comms_config The driver communications configuration.
@retval None or error.
"""
try:
cmd_port = dvr_config['cmd_port']
evt_port = dvr_config['evt_port']
dvr_mod = dvr_config['dvr_mod']
dvr_cls = dvr_config['dvr_cls']
svr_addr = dvr_config['svr_addr']
except (TypeError, KeyError):
# Not a dict. or missing required parameter.
log.error('CiLogger._start_driver(): missing required parameter in start_driver.')
return InstErrorCode.REQUIRED_PARAMETER
# Launch driver process.
self._dvr_proc = ZmqDriverProcess.launch_process(cmd_port, evt_port,
dvr_mod, dvr_cls)
self._dvr_proc.poll()
if self._dvr_proc.returncode:
# Error proc didn't start.
log.error('CiLogger._start_driver(): driver process did not launch.')
return InstErrorCode.AGENT_INIT_FAILED
log.info('CiLogger._start_driver(): launched driver process.')
# Create client and start messaging.
self._dvr_client = ZmqDriverClient(svr_addr, cmd_port, evt_port)
self._dvr_client.start_messaging(self.evt_recv)
log.info('CiLogger._start_driver(): driver process client started.')
time.sleep(1)
try:
retval = self._dvr_client.cmd_dvr('process_echo', 'Test.')
log.info('CiLogger._start_driver(): driver process echo test: %s.' %str(retval))
except Exception:
self._dvr_proc.terminate()
self._dvr_proc.wait()
self._dvr_proc = None
self._dvr_client = None
log.error('CiLogger._start_driver(): error commanding driver process.')
return InstErrorCode.AGENT_INIT_FAILED
else:
log.info('CiLogger._start_driver(): started its driver.')
return self._dvr_proc.pid
def _stop_driver(self):
"""
Stop the driver process and driver client.
@retval None.
"""
if self._dvr_client:
self._dvr_client.done()
self._dvr_proc.wait()
self._dvr_proc = None
self._dvr_client = None
log.info('CiLogger._stop_driver(): stopped its driver.')
time.sleep(1)
class DriverIntegrationTestSupport(object):
"""
Common functionality helpful for driver integration testing.
"""
def __init__(self, driver_module, driver_class,
device_addr, device_port, delim=None,
work_dir='/tmp/'):
"""
@param driver_module
@param driver_class
@param device_addr
@param device_port
@param delim 2-element delimiter to indicate traffic from the driver
in the logfile. See EthernetDeviceLogger.launch_process for
default value.
@param work_dir by default, '/tmp/'
"""
object.__init__(self)
self.driver_module = driver_module
self.driver_class = driver_class
self.device_addr = device_addr
self.device_port = device_port
self.delim = delim
self.work_dir = work_dir
# Should clear this in setup
self._events = []
self._dvr_client = None
def start_pagent(self):
"""
Construct and start the port agent.
@retval port Port that was used for connection to agent
"""
# Create port agent object.
this_pid = os.getpid()
self._pagent = EthernetDeviceLogger.launch_process(self.device_addr,
self.device_port,
self.work_dir,
self.delim,
this_pid)
pid = self._pagent.get_pid()
while not pid:
gevent.sleep(.1)
pid = self._pagent.get_pid()
port = self._pagent.get_port()
while not port:
gevent.sleep(.1)
port = self._pagent.get_port()
mi_logger.info('Started port agent pid %d listening at port %d', pid, port)
return port
def stop_pagent(self):
"""
Stop the port agent.
"""
if self._pagent:
pid = self._pagent.get_pid()
if pid:
mi_logger.info('Stopping pagent pid %i', pid)
self._pagent.stop()
else:
mi_logger.info('No port agent running.')
def start_driver(self):
"""
Start the driver process.
"""
# Launch driver process based on test config.
this_pid = os.getpid()
(dvr_proc, cmd_port, evt_port) = ZmqDriverProcess.launch_process(self.driver_module,
self.driver_class,
self.work_dir,
this_pid)
self._dvr_proc = dvr_proc
mi_logger.info('Started driver process for %d %d %s %s', cmd_port,
evt_port, self.driver_module, self.driver_class)
mi_logger.info('Driver process pid %d', self._dvr_proc.pid)
# Create driver client.
self._dvr_client = ZmqDriverClient('localhost', cmd_port,
evt_port)
mi_logger.info('Created driver client for %d %d %s %s', cmd_port,
evt_port, self.driver_module, self.driver_class)
# Start client messaging.
self._dvr_client.start_messaging(self.evt_recd)
mi_logger.info('Driver messaging started.')
gevent.sleep(.5)
def stop_driver(self):
"""
Method to shut down the driver process. Attempt normal shutdown,
and kill the process if unsuccessful.
"""
if self._dvr_proc:
mi_logger.info('Stopping driver process pid %d', self._dvr_proc.pid)
if self._dvr_client:
self._dvr_client.done()
self._dvr_proc.wait()
self._dvr_client = None
else:
try:
mi_logger.info('Killing driver process.')
self._dvr_proc.kill()
except OSError:
pass
self._dvr_proc = None
def evt_recd(self, evt):
"""
Simple callback to catch events from the driver for verification.
"""
self._events.append(evt)
class DriverIntegrationTestSupport(object):
"""
Common functionality helpful for driver integration testing.
"""
def __init__(self,
driver_module,
driver_class,
device_addr,
device_port,
delim=None,
work_dir='/tmp/'):
"""
@param driver_module
@param driver_class
@param device_addr
@param device_port
@param delim 2-element delimiter to indicate traffic from the driver
in the logfile. See EthernetDeviceLogger.launch_process for
default value.
@param work_dir by default, '/tmp/'
"""
object.__init__(self)
self.driver_module = driver_module
self.driver_class = driver_class
self.device_addr = device_addr
self.device_port = device_port
self.delim = delim
self.work_dir = work_dir
# Should clear this in setup
self._events = []
self._dvr_client = None
def start_pagent(self):
"""
Construct and start the port agent.
@retval port Port that was used for connection to agent
"""
# Create port agent object.
this_pid = os.getpid()
self._pagent = EthernetDeviceLogger.launch_process(
self.device_addr, self.device_port, self.work_dir, self.delim,
this_pid)
pid = self._pagent.get_pid()
while not pid:
gevent.sleep(.1)
pid = self._pagent.get_pid()
port = self._pagent.get_port()
while not port:
gevent.sleep(.1)
port = self._pagent.get_port()
mi_logger.info('Started port agent pid %d listening at port %d', pid,
port)
return port
def stop_pagent(self):
"""
Stop the port agent.
"""
if self._pagent:
pid = self._pagent.get_pid()
if pid:
mi_logger.info('Stopping pagent pid %i', pid)
self._pagent.stop()
else:
mi_logger.info('No port agent running.')
def start_driver(self):
"""
Start the driver process.
"""
# Launch driver process based on test config.
this_pid = os.getpid()
(dvr_proc, cmd_port,
evt_port) = ZmqDriverProcess.launch_process(self.driver_module,
self.driver_class,
self.work_dir, this_pid)
self._dvr_proc = dvr_proc
mi_logger.info('Started driver process for %d %d %s %s', cmd_port,
evt_port, self.driver_module, self.driver_class)
mi_logger.info('Driver process pid %d', self._dvr_proc.pid)
# Create driver client.
self._dvr_client = ZmqDriverClient('localhost', cmd_port, evt_port)
mi_logger.info('Created driver client for %d %d %s %s', cmd_port,
evt_port, self.driver_module, self.driver_class)
# Start client messaging.
self._dvr_client.start_messaging(self.evt_recd)
mi_logger.info('Driver messaging started.')
gevent.sleep(.5)
def stop_driver(self):
"""
Method to shut down the driver process. Attempt normal shutdown,
and kill the process if unsuccessful.
"""
if self._dvr_proc:
mi_logger.info('Stopping driver process pid %d',
self._dvr_proc.pid)
if self._dvr_client:
self._dvr_client.done()
self._dvr_proc.wait()
self._dvr_client = None
else:
try:
mi_logger.info('Killing driver process.')
self._dvr_proc.kill()
except OSError:
pass
self._dvr_proc = None
def evt_recd(self, evt):
"""
Simple callback to catch events from the driver for verification.
"""
self._events.append(evt)