def stage(self):
return pipeline_stages_base.EnsureConnectionStage()
def __init__(self, auth_provider):
"""
Constructor for instantiating a pipeline adapter object
:param auth_provider: The authentication provider
"""
self.feature_enabled = {
constant.C2D_MSG: False,
constant.INPUT_MSG: False,
constant.METHODS: False,
constant.TWIN: False,
constant.TWIN_PATCHES: False,
}
# Event Handlers - Will be set by Client after instantiation of this object
self.on_connected = None
self.on_disconnected = None
self.on_c2d_message_received = None
self.on_input_message_received = None
self.on_method_request_received = None
self.on_twin_patch_received = None
self._pipeline = (
pipeline_stages_base.PipelineRootStage()
.append_stage(pipeline_stages_iothub.UseAuthProviderStage())
.append_stage(pipeline_stages_iothub.HandleTwinOperationsStage())
.append_stage(pipeline_stages_base.CoordinateRequestAndResponseStage())
.append_stage(pipeline_stages_iothub_mqtt.IoTHubMQTTConverterStage())
.append_stage(pipeline_stages_base.EnsureConnectionStage())
.append_stage(pipeline_stages_base.SerializeConnectOpsStage())
.append_stage(pipeline_stages_mqtt.MQTTTransportStage())
)
def _on_pipeline_event(event):
if isinstance(event, pipeline_events_iothub.C2DMessageEvent):
if self.on_c2d_message_received:
self.on_c2d_message_received(event.message)
else:
logger.warning("C2D message event received with no handler. dropping.")
elif isinstance(event, pipeline_events_iothub.InputMessageEvent):
if self.on_input_message_received:
self.on_input_message_received(event.input_name, event.message)
else:
logger.warning("input message event received with no handler. dropping.")
elif isinstance(event, pipeline_events_iothub.MethodRequestEvent):
if self.on_method_request_received:
self.on_method_request_received(event.method_request)
else:
logger.warning("Method request event received with no handler. Dropping.")
elif isinstance(event, pipeline_events_iothub.TwinDesiredPropertiesPatchEvent):
if self.on_twin_patch_received:
self.on_twin_patch_received(event.patch)
else:
logger.warning("Twin patch event received with no handler. Dropping.")
else:
logger.warning("Dropping unknown pipeline event {}".format(event.name))
def _on_connected():
if self.on_connected:
self.on_connected()
def _on_disconnected():
if self.on_disconnected:
self.on_disconnected()
self._pipeline.on_pipeline_event_handler = _on_pipeline_event
self._pipeline.on_connected_handler = _on_connected
self._pipeline.on_disconnected_handler = _on_disconnected
def remove_this_code(call):
if call.error:
raise call.error
if isinstance(auth_provider, X509AuthenticationProvider):
op = pipeline_ops_iothub.SetX509AuthProviderOperation(
auth_provider=auth_provider, callback=remove_this_code
)
else: # Currently everything else goes via this block.
op = pipeline_ops_iothub.SetAuthProviderOperation(
auth_provider=auth_provider, callback=remove_this_code
)
self._pipeline.run_op(op)
def __init__(self, security_client):
"""
Constructor for instantiating a pipeline
:param security_client: The security client which stores credentials
"""
# Event Handlers - Will be set by Client after instantiation of pipeline
self.on_connected = None
self.on_disconnected = None
self.on_message_received = None
self._pipeline = (
pipeline_stages_base.PipelineRootStage()
.append_stage(pipeline_stages_provisioning.UseSecurityClientStage())
.append_stage(pipeline_stages_provisioning_mqtt.ProvisioningMQTTConverterStage())
.append_stage(pipeline_stages_base.EnsureConnectionStage())
.append_stage(pipeline_stages_base.SerializeConnectOpsStage())
.append_stage(pipeline_stages_mqtt.MQTTTransportStage())
)
def _on_pipeline_event(event):
if isinstance(event, pipeline_events_provisioning.RegistrationResponseEvent):
if self.on_message_received:
self.on_message_received(
event.request_id,
event.status_code,
event.key_values,
event.response_payload,
)
else:
logger.warning("Provisioning event received with no handler. dropping.")
else:
logger.warning("Dropping unknown pipeline event {}".format(event.name))
def _on_connected():
if self.on_connected:
self.on_connected("connected")
def _on_disconnected():
if self.on_disconnected:
self.on_disconnected("disconnected")
self._pipeline.on_pipeline_event_handler = _on_pipeline_event
self._pipeline.on_connected_handler = _on_connected
self._pipeline.on_disconnected_handler = _on_disconnected
callback = EventedCallback()
if isinstance(security_client, X509SecurityClient):
op = pipeline_ops_provisioning.SetX509SecurityClientOperation(
security_client=security_client, callback=callback
)
elif isinstance(security_client, SymmetricKeySecurityClient):
op = pipeline_ops_provisioning.SetSymmetricKeySecurityClientOperation(
security_client=security_client, callback=callback
)
else:
logger.error("Provisioning not equipped to handle other security client.")
self._pipeline.run_op(op)
callback.wait_for_completion()
if op.error:
logger.error("{} failed: {}".format(op.name, op.error))
raise op.error
