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chore: add README, nox support for MQTT example (#194)
* chore: Add noxfile * chore: Lint example * chore: Add readme * chore: Fix review comments * 🦉 Updates from OwlBot See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md * chore: owlbot repo specifics * 🦉 Updates from OwlBot See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md * chore: year update * 🦉 Updates from OwlBot See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md * chore: year update * 🦉 Updates from OwlBot See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
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‎owlbot.py‎

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s.shell.run(["nox", "-s", "blacken"], hide_output=False)
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# ----------------------------------------------------------------------------
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# Repo specifics replacements
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# ----------------------------------------------------------------------------
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s.replace(
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"samples/api-client/accesstoken_example/noxfile.py",
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"# Copyright 2019 Google LLC",
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"# Copyright 2021 Google LLC"
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)
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s.replace(
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"samples/api-client/mqtt_example/noxfile.py",
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"# Copyright 2019 Google LLC",
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"# Copyright 2021 Google LLC"
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)
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s.replace(
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"scripts/readme-gen/templates/*.rst",
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"GoogleCloudPlatform/python-docs-samples",
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"googleapis/python-iot"
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)
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s.replace(
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"scripts/readme-gen/templates/*.rst",
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"python-docs-samples",
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"python-iot"
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)

‎samples/api-client/accesstoken_example/noxfile.py‎

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# Copyright 2019 Google LLC
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# Copyright 2021 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.

‎samples/api-client/mqtt_example/README.rst‎

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.. This file is automatically generated. Do not edit this file directly.
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Google Cloud IoT Core Python Samples
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===============================================================================
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.. image:: https://gstatic.com/cloudssh/images/open-btn.png
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:target: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/python-iot&page=editor&open_in_editor=iot/api-client/mqtt_example/README.rst
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This directory contains samples for `Google Cloud IoT Core`_. Cloud IoT Core allows developers to easily integrate Publish and Subscribe functionality with devices and programmatically manage device authorization.
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This example connects a device to Cloud IoT Core via MQTT, using a JWT for authentication. After connecting, the device publishes messages to the device's MQTT topic at a rate of one per second.
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Note that before you can run this sample, you must register a device as described in the `Cloud IoT device docs <https://cloud.google.com/iot/docs/how-tos/devices>`_. For the gateway samples, you must register and bind a device as described in the `Cloud IoT gateway docs <https://cloud.google.com/iot/docs/how-tos/gateways#setup>`_.
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.. _Google Cloud IoT Core: https://cloud.google.com/iot/docs
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Setup
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-------------------------------------------------------------------------------
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Authentication
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++++++++++++++
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This sample requires you to have authentication setup. Refer to the
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`Authentication Getting Started Guide`_ for instructions on setting up
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credentials for applications.
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.. _Authentication Getting Started Guide:
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https://cloud.google.com/docs/authentication/getting-started
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Install Dependencies
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++++++++++++++++++++
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#. Clone python-iot and change directory to the sample directory you want to use.
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.. code-block:: bash
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$ git clone https://github.com/googleapis/python-iot.git
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#. Install `pip`_ and `virtualenv`_ if you do not already have them. You may want to refer to the `Python Development Environment Setup Guide`_ for Google Cloud Platform for instructions.
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.. _Python Development Environment Setup Guide:
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https://cloud.google.com/python/setup
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#. Create a virtualenv. Samples are compatible with Python 3.6+.
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.. code-block:: bash
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$ virtualenv env
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$ source env/bin/activate
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#. Install the dependencies needed to run the samples.
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.. code-block:: bash
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$ pip install -r requirements.txt
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.. _pip: https://pip.pypa.io/
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.. _virtualenv: https://virtualenv.pypa.io/
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Samples
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-------------------------------------------------------------------------------
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MQTT example
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+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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.. image:: https://gstatic.com/cloudssh/images/open-btn.png
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:target: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/python-iot&page=editor&open_in_editor=iot/api-client/mqtt_example/cloudiot_mqtt_example.py,iot/api-client/mqtt_example/README.rst
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To run this sample:
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.. code-block:: no-highlight
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$ python cloudiot_mqtt_example.py
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usage: cloudiot_mqtt_example.py [-h] --algorithm {RS256,ES256}
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[--ca_certs CA_CERTS]
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[--cloud_region CLOUD_REGION] [--data DATA]
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--device_id DEVICE_ID
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[--gateway_id GATEWAY_ID]
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[--jwt_expires_minutes JWT_EXPIRES_MINUTES]
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[--listen_dur LISTEN_DUR]
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[--message_type {event,state}]
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[--mqtt_bridge_hostname MQTT_BRIDGE_HOSTNAME]
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[--mqtt_bridge_port {8883,443}]
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[--num_messages NUM_MESSAGES]
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--private_key_file PRIVATE_KEY_FILE
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[--project_id PROJECT_ID] --registry_id
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REGISTRY_ID
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[--service_account_json SERVICE_ACCOUNT_JSON]
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{device_demo,gateway_send,gateway_listen} ...
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Example Google Cloud IoT Core MQTT device connection code.
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positional arguments:
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{device_demo,gateway_send,gateway_listen}
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device_demo Connects a device, sends data, and receives data.
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gateway_send Sends data from a gateway on behalf of a device that
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is bound to it.
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gateway_listen Listens for messages sent to the gateway and bound
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devices.
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optional arguments:
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-h, --help show this help message and exit
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--algorithm {RS256,ES256}
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Which encryption algorithm to use to generate the JWT.
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--ca_certs CA_CERTS CA root from https://pki.google.com/roots.pem
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--cloud_region CLOUD_REGION
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GCP cloud region
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--data DATA The telemetry data sent on behalf of a device
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--device_id DEVICE_ID
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Cloud IoT Core device id
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--gateway_id GATEWAY_ID
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Gateway identifier.
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--jwt_expires_minutes JWT_EXPIRES_MINUTES
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Expiration time, in minutes, for JWT tokens.
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--listen_dur LISTEN_DUR
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Duration (seconds) to listen for configuration
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messages
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--message_type {event,state}
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Indicates whether the message to be published is a
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telemetry event or a device state message.
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--mqtt_bridge_hostname MQTT_BRIDGE_HOSTNAME
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MQTT bridge hostname.
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--mqtt_bridge_port {8883,443}
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MQTT bridge port.
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--num_messages NUM_MESSAGES
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Number of messages to publish.
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--private_key_file PRIVATE_KEY_FILE
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Path to private key file.
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--project_id PROJECT_ID
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GCP cloud project name
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--registry_id REGISTRY_ID
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Cloud IoT Core registry id
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--service_account_json SERVICE_ACCOUNT_JSON
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Path to service account json file.
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.. _Google Cloud SDK: https://cloud.google.com/sdk/

‎samples/api-client/mqtt_example/README.rst.in‎

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# This file is used to generate README.rst
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product:
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name: Google Cloud IoT Core
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short_name: Cloud IoT Core
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url: https://cloud.google.com/iot/docs
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description: >
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Cloud IoT Core allows developers to easily integrate Publish and
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Subscribe functionality with devices and programmatically manage device
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authorization.
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This example connects a device to Cloud IoT Core via MQTT, using a JWT for
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authentication. After connecting, the device publishes messages to the device's
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MQTT topic at a rate of one per second.
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Note that before you can run this sample, you must register a device as described
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in the `Cloud IoT device docs <https://cloud.google.com/iot/docs/how-tos/devices>`_.
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For the gateway samples, you must register and bind a device as described in the
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`Cloud IoT gateway docs <https://cloud.google.com/iot/docs/how-tos/gateways#setup>`_.
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setup:
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- auth
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- install_deps
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samples:
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- name: MQTT example
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file: cloudiot_mqtt_example.py
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show_help: True
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cloud_client_library: false
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folder: iot/api-client/mqtt_example

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