class HubManager(object):
def __init__(self):
global TWIN_CONTEXT, application_name
# Defines settings of the IoT SDK
protocol = IoTHubTransportProvider.MQTT
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
self.client.set_option("logtrace", 1) #enables MQTT logging
self.client.set_option("messageTimeout", 10000)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
print("Module is now waiting for messages in the input1 queue.")
self.client.set_module_twin_callback(module_twin_callback,
TWIN_CONTEXT)
print("Module is now waiting for device twin updating.")
if application_name is not None:
reported = {'application': application_name}
self.client.patch_twin_reported_properties(reported)
def send_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
def SendTemperatureData(self, msg):
print("Sending temperature message...")
message = IoTHubMessage(msg)
self.client.send_event_async("output1", message,
send_confirmation_callback, 0)
print("Successfully finished sending temperature message...")
class IoTMessaging:
timeout = 10000
def __init__(self,
input_queue=None,
output_queue=None,
receive_msg_callback=None):
self.client = IoTHubModuleClient()
self.client.create_from_environment(IoTHubTransportProvider.MQTT)
# set the time until a message times out
self.client.set_option("messageTimeout", self.timeout)
self.input_queue = input_queue
self.output_queue = output_queue
if self.input_queue is not None:
self.client.set_message_callback(self.input_queue, receive_message,
receive_msg_callback)
def send_event(self, event, send_context, to_output_queue=True):
self.client.send_event_async(self.output_queue, event,
send_confirmation_callback, send_context)
def send_to_output(self, event, output_name, send_context):
self.client.send_event_async(output_name, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
#self.client.set_module_twin_callback(self.module_twin_callback, self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
def send_msg_to_cloud(self, msg, last_sent_time=time.time()):
global delay_to_send_to_cloud
try:
if (time.time() - last_sent_time <= delay_to_send_to_cloud):
return last_sent_time
message = IoTHubMessage(msg)
self.client.send_event_async("output1", message,
send_confirmation_callback, 0)
last_sent_time = time.time()
return last_sent_time
except Exception:
print("Exception in SendMsgToCloud")
traceback.print_exc()
last_sent_time = time.time()
return last_sent_time
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
# Sets the callback when a module twin's desired properties are updated.
self.client.set_module_twin_callback(module_twin_callback, self)
# Sets callback for module twin reported properties.
global reported_state
#self.client.send_reported_state(self.client, reported_state, len(reported_state), send_reported_state_callback, SEND_REPORTED_STATE_CONTEXT)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
def SendData(self, msg):
global MESSAGE_COUNT
record_time_local = datetime.now().strftime('%Y-%m-%dT%H:%M:%S.%f')
print("\nsending message %d at %s" %
(MESSAGE_COUNT, record_time_local))
print(msg)
message = IoTHubMessage(msg)
message.message_id = "message_%d" % MESSAGE_COUNT
message.correlation_id = "correlation_%d" % MESSAGE_COUNT
self.client.send_event_async("output1", message,
send_confirmation_callback, 0)
print("finished sending message %d\n" % (MESSAGE_COUNT))
class HubManager(object):
def __init__(
self,
messageTimeout,
protocol,
verbose=False):
'''
Communicate with the Edge Hub
:param int messageTimeout: the maximum time in milliseconds until a message times out. The timeout period starts at IoTHubClient.send_event_async. By default, messages do not expire.
:param IoTHubTransportProvider protocol: Choose HTTP, AMQP or MQTT as transport protocol. Currently only MQTT is supported.
:param bool verbose: set to true to get detailed logs on messages
'''
self.messageTimeout = messageTimeout
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
self.client.set_option("messageTimeout", self.messageTimeout)
self.client.set_option("product_info","edge-engine-inference")
if verbose:
self.client.set_option("logtrace", 1)
self.client.set_message_callback("output", receive_message,self)
def send_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event, send_confirmation_callback, send_context)
class HubManager(object):
TIMER_COUNT = 2
TWIN_CONTEXT = 0
SEND_REPORTED_STATE_CONTEXT = 0
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
#self.iotedgemodule = iotedgemodules()
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
def iothub_client_sample_run(self, message):
try:
#client = self.iothub_client_init()
if self.client.protocol == IoTHubTransportProvider.MQTT:
print("Sending data as reported property...")
reported_state = "{\"rtsp_addr\":\"" + message + "\"}"
self.client.send_reported_state(
reported_state, len(reported_state),
send_reported_state_callback,
self.SEND_REPORTED_STATE_CONTEXT)
status_counter = 0
while status_counter <= self.TIMER_COUNT:
status = self.client.get_send_status()
time.sleep(2)
status_counter += 1
except IoTHubError as iothub_error:
print("Unexpected error %s from IoTHub" % iothub_error)
return
except KeyboardInterrupt:
print("IoTHubClient sample stopped")
def SendMsgToCloud(self, msg):
try:
#print("sending message...")
message = IoTHubMessage(msg)
self.client.send_event_async("output1", message,
send_confirmation_callback, 0)
#print("finished sending message...")
except Exception:
print("Exception in SendMsgToCloud")
pass
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# sets the callback when a message arrives on "input1" queue. Messages sent to other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", blink_callback, self)
self.client.set_module_method_callback(module_method_callback, None)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
class HubManager(object):
def __init__(self):
# Defines settings of the IoT SDK
protocol = IoTHubTransportProvider.MQTT
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
self.client.set_option("logtrace", 1) #enables MQTT logging
self.client.set_option("messageTimeout", 10000)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
print("Module is now waiting for messages in the input1 queue.")
class HubManager(object):
def __init__(self, messageTimeout, protocol, verbose=False):
self.messageTimeout = messageTimeout
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
self.client.set_option("messageTimeout", self.messageTimeout)
self.client.set_option("product_info", "edge-engine-inference")
if verbose:
self.client.set_option("logtrace", 1)
self.client.set_message_callback("output", receive_message, self)
def send_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT_MILLISECONDS)
self.client.set_message_callback(INPUT_ENDPOINT_NAME,
avro_writer_message_callback, self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(
self,
protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
self.device_id= os.getenv("IOTEDGE_DEVICEID", "err")
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# input for sensor messages
self.client.set_message_callback("sensor", receive_message_callback, self)
self._received_measurements = {}
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(
outputQueueName, event, send_confirmation_callback, send_context)
# This method is responsible for everything to do with message contents
def handle_measurement(self, measurement):
message_uuid = measurement["message_uuid"]
device_id = measurement["device_id"]
if device_id not in self._received_measurements:
self._received_measurements[device_id] = []
self._received_measurements[device_id] += [{
"temperature" : measurement["temperature"],
"timestamp" : measurement["timestamp"]
}]
threshold = 30.0
if measurement["temperature"] > threshold:
other_device_ids = [k for k in self._received_measurements if k != device_id]
other_measurements = [ms[-1] for did in other_device_ids for ms in self._received_measurements[did]]
if all([m["temperature"] > threshold for m in other_measurements]):
warn_message_uuid = str(uuid.uuid1())
contents = {
"message_uuid": str(warn_message_uuid),
"device_id": self.device_id,
"timestamp": datetime.datetime.utcnow().isoformat(),
"message_test": "Temperature is too high!!!"
}
print("Sending warn message " + str(contents))
msg = IoTHubMessage(json.dumps(contents))
self.forward_event_to_output("sensor", msg, str(warn_message_uuid))
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "postprocessinginput" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("postprocessinginput",
receive_message_callback, self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# Sets the callback when a module twin's desired properties are updated.
self.client.set_module_twin_callback(module_twin_callback, self)
# sets the callback when a message arrives on "ScheduleOutput" queue.
self.client.set_message_callback("ScheduleInput",
receive_schedule_message_callback,
self)
# sets the callback when a message arrives on "SensorsOutputInput" queue.
#self.client.set_message_callback("SensorsInput", receive_sensor_notification_callback, self)
print("Initialization done.\n")
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
self.set_certificates()
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
# sets the callback when a twin's desired properties are updated.
self.client.set_module_twin_callback(module_twin_callback, self)
def set_certificates(self):
isWindows = sys.platform.lower() in ['windows', 'win32']
if not isWindows:
CERT_FILE = os.environ['EdgeModuleCACertificateFile']
print("Adding TrustedCerts from: {0}".format(CERT_FILE))
# this brings in x509 privateKey and certificate
file = open(CERT_FILE)
try:
self.client.set_option("TrustedCerts", file.read())
print("set_option TrustedCerts successful")
except IoTHubClientError as iothub_client_error:
print("set_option TrustedCerts failed (%s)" %
iothub_client_error)
file.close()
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
class HubManager(object):
def __init__(self, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
# items added to show the complete functionality
self.client.set_module_twin_callback(module_twin_callback, self)
self.client.set_module_method_callback(module_method_callback, self)
# updating the Module TWIN with a started time
reported_state = "{\"started\":\"" + str(
datetime.datetime.now()) + "\"}"
self.client.send_reported_state(reported_state, len(reported_state),
send_reported_state_callback, self)
def updateReportedTWIN(self):
reported_state = {}
reported_state["RESTTargetURL"] = RESTTargetURL
reported_state["RESTTargetLocation"] = RESTTargetLocation
reported_state["POLINGInterval"] = POLINGInterval
reported_statestr = json.dumps(reported_state)
self.client.send_reported_state(reported_statestr,
len(reported_statestr),
send_reported_state_callback, self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
def run_e2e_device_client(iothub_service_client_messaging,
iothub_device_method, iothub_device_twin, device_id,
device_or_module_connection_string, protocol,
authMethod, testing_modules):
global IOTHUB_E2E_X509_CERT
global IOTHUB_E2E_X509_THUMBPRINT
global IOTHUB_E2E_X509_PRIVATE_KEY
global CERTIFICATES
global MESSAGING_CONTEXT
###########################################################################
# IoTHubClient
# prepare
# act
if testing_modules == True:
device_client = IoTHubModuleClient(device_or_module_connection_string,
protocol)
assert isinstance(device_client,
IoTHubModuleClient), 'Error: Invalid type returned!'
else:
device_client = IoTHubDeviceClient(device_or_module_connection_string,
protocol)
assert isinstance(device_client,
IoTHubDeviceClient), 'Error: Invalid type returned!'
# verify
assert device_client != None, "Error: device_client is NULL"
###########################################################################
###########################################################################
# set_option
# prepare
# act
device_client.set_option("messageTimeout", DEVICE_MESSAGE_TIMEOUT)
if authMethod == IoTHubRegistryManagerAuthMethod.X509_THUMBPRINT:
device_client.set_option("x509certificate", IOTHUB_E2E_X509_CERT)
device_client.set_option("x509privatekey", IOTHUB_E2E_X509_PRIVATE_KEY)
if device_client.protocol == IoTHubTransportProvider.HTTP:
device_client.set_option("timeout", HTTP_TIMEOUT)
device_client.set_option("MinimumPollingTime",
HTTP_MINIMUM_POLLING_TIME)
device_client.set_option("TrustedCerts", CERTIFICATES)
device_client.set_option("logtrace", True)
# verify
###########################################################################
if testing_modules == False: ## Modules do not currently support set_message_callback outside context of Edge inputs/outputs
###########################################################################
# set_message_callback
# prepare
# act
device_client.set_message_callback(receive_message_callback,
MESSAGING_CONTEXT)
###########################################################################
###########################################################################
# set_connection_status_callback
# prepare
# act
device_client.set_connection_status_callback(connection_status_callback,
CONNECTION_STATUS_CONTEXT)
###########################################################################
# verify
###########################################################################
if protocol == IoTHubTransportProvider.AMQP \
or protocol == IoTHubTransportProvider.AMQP_WS \
or protocol == IoTHubTransportProvider.MQTT \
or protocol == IoTHubTransportProvider.MQTT_WS:
###########################################################################
# set_device_twin_callback
# prepare
# act
if testing_modules == True:
device_client.set_module_twin_callback(device_twin_callback,
MESSAGING_CONTEXT)
else:
device_client.set_device_twin_callback(device_twin_callback,
MESSAGING_CONTEXT)
# verify
###########################################################################
###########################################################################
# set_device_method_callback
# prepare
# act
if testing_modules == True:
device_client.set_module_method_callback(device_method_callback,
MESSAGING_CONTEXT)
else:
device_client.set_device_method_callback(device_method_callback,
MESSAGING_CONTEXT)
# verify
###########################################################################
###########################################################################
# update device twin
# prepare
global TWIN_CALLBACK_EVENT
global TWIN_CALLBACK_COUNTER
TWIN_CALLBACK_EVENT.clear()
TWIN_CALLBACK_COUNTER = 0
# act
sc_update_twin(iothub_device_twin, device_id, testing_modules)
TWIN_CALLBACK_EVENT.wait(CALLBACK_TIMEOUT)
# verify
assert TWIN_CALLBACK_COUNTER > 0, "Error: device_twin_callback callback has not been called"
###########################################################################
###########################################################################
# call device method
# prepare
global DEVICE_METHOD_EVENT
global DEVICE_METHOD_CALLBACK_COUNTER
DEVICE_METHOD_EVENT.clear()
DEVICE_METHOD_CALLBACK_COUNTER = 0
method_name = "E2EMethodName"
payload_json = "{\"method_number\":\"42\"}"
# act
sc_invoke_device_method(iothub_device_method, device_id, method_name,
payload_json, testing_modules)
DEVICE_METHOD_EVENT.wait(CALLBACK_TIMEOUT)
# verify
assert DEVICE_METHOD_CALLBACK_COUNTER > 0, "Error: device_twin_callback callback has not been called"
###########################################################################
###########################################################################
# send_reported_state
# prepare
global REPORTED_STATE_EVENT
global REPORTED_STATE_CALLBACK_COUNTER
reported_state = "{\"newState\":\"standBy\"}"
REPORTED_STATE_EVENT.clear()
REPORTED_STATE_CALLBACK_COUNTER = 0
# act
device_client.send_reported_state(reported_state, len(reported_state),
send_reported_state_callback,
REPORTED_STATE_CONTEXT)
REPORTED_STATE_EVENT.wait(CALLBACK_TIMEOUT)
# verify
assert REPORTED_STATE_CALLBACK_COUNTER > 0, "Error: send_reported_state_callback has not been called"
###########################################################################
###########################################################################
# set_retry_policy
# get_retry_policy
# prepare
# act
retryPolicy = IoTHubClientRetryPolicy.RETRY_INTERVAL
retryInterval = 100
device_client.set_retry_policy(retryPolicy, retryInterval)
print("SetRetryPolicy to: retryPolicy = %d" % retryPolicy)
print("SetRetryPolicy to: retryTimeoutLimitInSeconds = %d" % retryInterval)
# verify
retryPolicyReturn = device_client.get_retry_policy()
assert retryPolicyReturn.retryPolicy == IoTHubClientRetryPolicy.RETRY_INTERVAL, "Error: set_retry_policy/get_retry_policy failed"
assert retryPolicyReturn.retryTimeoutLimitInSeconds == 100, "Error: set_retry_policy/get_retry_policy failed"
print("GetRetryPolicy returned: retryPolicy = %d" %
retryPolicyReturn.retryPolicy)
print("GetRetryPolicy returned: retryTimeoutLimitInSeconds = %d" %
retryPolicyReturn.retryTimeoutLimitInSeconds)
if testing_modules == False: ## Modules do not currently support set_message_callback outside context of Edge inputs/outputs
###########################################################################
# send_event_async
# prepare
global MESSAGING_MESSAGE
global MESSAGE_RECEIVE_EVENT
global MESSAGE_RECEIVE_CALLBACK_COUNTER
MESSAGING_MESSAGE = ''.join(
[random.choice(string.ascii_letters) for n in range(12)])
message = IoTHubMessage(bytearray(MESSAGING_MESSAGE, 'utf8'))
MESSAGE_RECEIVE_EVENT.clear()
MESSAGE_RECEIVE_CALLBACK_COUNTER = 0
# act
sc_send_message(iothub_service_client_messaging, device_id, message,
testing_modules)
MESSAGE_RECEIVE_EVENT.wait(CALLBACK_TIMEOUT)
# verify
assert MESSAGE_RECEIVE_CALLBACK_COUNTER > 0, "Error: message has not been received"
###########################################################################
###########################################################################
# get_send_status
# prepare
status_counter = 0
status = -1
# act
while status_counter < 1:
status = device_client.get_send_status()
print("Send status: {0}".format(status))
# verify
assert status == 0, "get_send_status reported status is not IDLE"
status_counter += 1
###########################################################################
if protocol != IoTHubTransportProvider.AMQP \
and protocol != IoTHubTransportProvider.AMQP_WS:
###########################################################################
# get_last_message_receive_time
# prepare
last_receive_time = -1
# act
last_receive_time = device_client.get_last_message_receive_time()
# verify
assert last_receive_time > 0, "Error: get_last_message_receive_time failed"
###########################################################################
if testing_modules == False: ## Modules do not currently support uploadToBlob
###########################################################################
# upload_blob_async
# prepare
global BLOB_UPLOAD_CONTEXT
global BLOB_UPLOAD_EVENT
global BLOB_UPLOAD_CALLBACK_COUNTER
destination_file_name = ''.join(
[random.choice(string.ascii_letters) for n in range(12)])
source = "Blob content for file upload test!"
size = 34
BLOB_UPLOAD_EVENT.clear()
BLOB_UPLOAD_CALLBACK_COUNTER = 0
# act
device_client.upload_blob_async(destination_file_name, source, size,
blob_upload_conf_callback,
BLOB_UPLOAD_CONTEXT)
BLOB_UPLOAD_EVENT.wait(CALLBACK_TIMEOUT)
# verify
assert BLOB_UPLOAD_CALLBACK_COUNTER > 0, "Error: blob_upload_conf_callback callback has not been called"
class HubManager(object):
TIMER_COUNT = 2
TWIN_CONTEXT = 0
SEND_REPORTED_STATE_CONTEXT = 0
def __init__(self, camera_handle, protocol=IoTHubTransportProvider.MQTT):
self.client_protocol = protocol
self.client = IoTHubModuleClient()
self.client.create_from_environment(protocol)
self.iot_camera_handle = camera_handle
# set the time until a message times out
self.client.set_option("messageTimeout", MESSAGE_TIMEOUT)
# sets the callback when a message arrives on "input1" queue. Messages sent to
# other inputs or to the default will be silently discarded.
self.client.set_message_callback("input1", receive_message_callback,
self)
self.client.set_module_twin_callback(self.module_twin_callback, self)
# Forwards the message received onto the next stage in the process.
def forward_event_to_output(self, outputQueueName, event, send_context):
self.client.send_event_async(outputQueueName, event,
send_confirmation_callback, send_context)
def iothub_client_sample_run(self, message):
try:
if self.client.protocol == IoTHubTransportProvider.MQTT:
print("Sending data as reported property...")
reported_state = "{\"rtsp_addr\":\"" + message + "\"}"
self.client.send_reported_state(
reported_state, len(reported_state),
send_reported_state_callback,
self.SEND_REPORTED_STATE_CONTEXT)
status_counter = 0
while status_counter <= self.TIMER_COUNT:
status = self.client.get_send_status()
time.sleep(2)
status_counter += 1
except IoTHubError as iothub_error:
print("Unexpected error %s from IoTHub" % iothub_error)
return
except KeyboardInterrupt:
print("IoTHubClient sample stopped")
def SendMsgToCloud(self, msg):
try:
#logging.info("sending message...")
message = IoTHubMessage(msg)
self.client.send_event_async("output1", message,
send_confirmation_callback, 0)
logging.info("finished sending message...")
except Exception:
print("Exception in SendMsgToCloud")
pass
def module_twin_callback(self, update_state, payload, user_context):
global inference_files_zip_url
global model_url
global label_url
global config_url
global msg_per_minute
global wait_for_minutes
global object_of_interest
print("")
print("Twin callback called with:")
print(" updateStatus: %s" % update_state)
print(" payload: %s" % payload)
data = json.loads(payload)
setRestartCamera = False
if "desired" in data and "inference_files_zip_url" in data["desired"]:
dst_folder = "twin_provided_model"
inference_files_zip_url = data["desired"][
"inference_files_zip_url"]
if inference_files_zip_url:
print(
"Setting value to %s from :: data[\"desired\"][\"all_inference_files_zip\"]"
% inference_files_zip_url)
setRestartCamera = get_file_zip(inference_files_zip_url,
dst_folder)
else:
print(inference_files_zip_url)
if "inference_files_zip_url" in data:
dst_folder = "twin_provided_model"
inference_files_zip_url = data["inference_files_zip_url"]
if inference_files_zip_url:
print(
"Setting value to %s from :: data[\"all_inference_files_zip\"]"
% inference_files_zip_url)
setRestartCamera = get_file_zip(inference_files_zip_url,
dst_folder)
else:
print(inference_files_zip_url)
if "desired" in data and "msg_per_minute" in data["desired"]:
msg_per_minute = data["desired"]["msg_per_minute"]
msg_per_minute = 60 / int(msg_per_minute)
print("Setting value to %s from :: data[\"msg_per_minute\"]" %
msg_per_minute)
if "msg_per_minute" in data:
msg_per_minute = data["msg_per_minute"]
wait_for_minutes = int(60 / int(msg_per_minute))
print("Setting value to %s from :: data[\"msg_per_minute\"]" %
msg_per_minute)
if "desired" in data and "object_of_interest" in data["desired"]:
object_of_interest = data["desired"]["object_of_interest"]
print("Setting value to %s from :: data[\"object_of_interest\"]" %
object_of_interest)
if "object_of_interest" in data:
msg_per_minute = data["object_of_interest"]
print("Setting value to %s from :: data[\"object_of_interest\"]" %
object_of_interest)
if setRestartCamera:
#
try:
logger.info("Restarting VAM to apply new model config")
self.restartInference(self.iot_camera_handle)
except Exception as e:
logger.info("Got an issue during vam ON off after twin update")
logger.exception(e)
raise
def restartInference(self, camera_client):
try:
logger.debug("Restarting VAM to apply new model config")
camera_client.set_overlay_state("off")
if (camera_client.vam_running):
camera_client.set_analytics_state("off")
#time.sleep(1)
camera_client.set_analytics_state("on")
camera_client.set_overlay_state("on")
#self.print_and_send_results()
except Exception as e:
logger.debug(
"System got an exception during vam ON off after twin model update!!! "
)
logger.exception(e)
#self.restart_cam(camera_client)
raise
