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# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
from azure.iot.modelsrepository import (
ModelsRepositoryClient,
DEPENDENCY_MODE_TRY_FROM_EXPANDED,
DEPENDENCY_MODE_ENABLED,
)
from azure.core.exceptions import (
ResourceNotFoundError,
ServiceRequestError,
ServiceResponseError,
HttpResponseError,
)
import pprint
dtmi = "dtmi:com:example:TemperatureController;1"
dtmi2 = "dtmi:com:example:TemperatureController;2"
# By default the clients in this sample will use the Azure Device Models Repository endpoint
# i.e. https://devicemodels.azure.com/
# See client_configuration_sample.py for examples of alternate configurations
def get_model():
# This API call will return a dictionary mapping DTMI to its corresponding model from
# a DTDL document at the specified endpoint
# i.e. https://devicemodels.azure.com/dtmi/com/example/temperaturecontroller-1.json
with ModelsRepositoryClient() as client:
model_map = client.get_models(dtmi)
pprint.pprint(model_map)
def get_models():
# This API call will return a dictionary mapping DTMIs to corresponding models for from the
# DTDL documents at the specified endpoint
# i.e. https://devicemodels.azure.com/dtmi/com/example/temperaturecontroller-1.json
# i.e. https://devicemodels.azure.com/dtmi/com/example/temperaturecontroller-2.json
with ModelsRepositoryClient() as client:
model_map = client.get_models([dtmi, dtmi2])
pprint.pprint(model_map)
def get_model_expanded_dtdl():
# This API call will return a dictionary mapping DTMIs to corresponding models for all elements
# of an expanded DTDL document at the specified endpoint
# i.e. https://devicemodels.azure.com/dtmi/com/example/temperaturecontroller-1.expanded.json
with ModelsRepositoryClient() as client:
model_map = client.get_models(
dtmis=[dtmi], dependency_resolution=DEPENDENCY_MODE_TRY_FROM_EXPANDED
)
pprint.pprint(model_map)
def get_model_and_dependencies():
# This API call will return a dictionary mapping the specified DTMI to its corresponding model,
# from a DTDL document at the specified endpoint, as well as the DTMIs and models for all
# dependencies on components and interfaces
# i.e. https://devicemodels.azure.com/dtmi/com/example/temperaturecontroller-1.json
with ModelsRepositoryClient() as client:
model_map = client.get_models(dtmis=[dtmi], dependency_resolution=DEPENDENCY_MODE_ENABLED)
pprint.pprint(model_map)
def get_model_error_handling():
# Various errors that can be raised when fetching models
try:
with ModelsRepositoryClient() as client:
model_map = client.get_models(dtmi)
pprint.pprint(model_map)
except ResourceNotFoundError as e:
print("The model could not be found")
print("{}".format(e.message))
except ServiceRequestError as e:
print("There was an error sending the request")
print("{}".format(e.message))
except ServiceResponseError as e:
print("No response was received")
print("{}".format(e.message))
except HttpResponseError as e:
print("HTTP Error Response received")
print("{}".format(e.message))
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