# wotpy
## Introduction
wotpy is an experimental implementation of a [W3C WoT Runtime](https://github.com/w3c/wot-architecture/blob/master/proposals/terminology.md#wot-runtime) and the [W3C WoT Scripting API](https://github.com/w3c/wot-architecture/blob/master/proposals/terminology.md#scripting-api) in Python.
Inspired by the exploratory implementations located in the [thingweb GitHub page](https://github.com/thingweb).
### About the current version
The current version of the project has been updated in an effort to address stability and deprecation issues. The following changes have been made compared to [version `0.16.0`](https://pypi.org/project/wotpy/0.16.0/):
* The project has been updated to support Python 3.7 and above. All support for Python 2 has been dropped.
* The project has mostly dropped the Tornado coroutines syntax in favor of the `async`/`await` syntax.
* The project has removed the dependency from the [`hbmqtt`](https://github.com/beerfactory/hbmqtt) package in favor of [`aiomqtt`](https://github.com/sbtinstruments/aiomqtt) due to the deprecation of the former.
However, please note that there's still a **significant pending issue**. Although the project is currently in a reasonably stable state, it does not implement the current version of the W3C WoT specifications. Specifically, the version at the time of writing is based on the following **outdated** references:
* K. Kajimoto, M. Kovatsch, and U. Davuluru, ‘Web of Things (WoT) Architecture’, W3C, W3C First Public Working Draft, Sep. 2017. [Online]. Available: https://www.w3.org/TR/2017/WD-wot-architecture-20170914/
* Z. Kis, K. Nimura, D. Peintner, and J. Hund, ‘Web of Things (WoT) Scripting API’, W3C, W3C Working Draft, Nov. 2018. [Online]. Available: https://www.w3.org/TR/2018/WD-wot-scripting-api-20181129/
* S. Käbisch and T. Kamiya, ‘Web of Things (WoT) Thing Description’, W3C, W3C Working Draft, Oct. 2018. [Online]. Available: https://www.w3.org/TR/2018/WD-wot-thing-description-20181021/
> ℹ️ It is in our plans to get wotpy up to speed with the latest version of the specifications. We don't have an ETA for this, but we will be working on it in the near future.
In summary, wotpy is mature enough to be used in projects; in fact, it is being used in production at [CTIC](https://github.com/fundacionctic). However, it is not an adequate representation of the current status of the W3C WoT. We greatly encourage you to check the [Developer Resources section on the WoT website](https://www.w3.org/WoT/developers) to find out about the current state of the art.
## Features
The wotpy project provides fully functional implementations of four different protocol bindings: MQTT, HTTP, WebSockets, and CoAP. Moreover, it offers a discovery implementation based on Multicast DNS.
These bindings are built on top of the following dependencies, which are instrumental to the project:
| Feature | Implementation based on |
| -----------------: | ----------------------------------------------------------------------- |
| HTTP binding | [tornadoweb/tornado](https://github.com/tornadoweb/tornado) |
| WebSockets binding | [tornadoweb/tornado](https://github.com/tornadoweb/tornado) |
| CoAP binding | [chrysn/aiocoap](https://github.com/chrysn/aiocoap) |
| MQTT binding | [sbtinstruments/aiomqtt](https://github.com/sbtinstruments/aiomqtt) |
| mDNS discovery | [jstasiak/python-zeroconf](https://github.com/jstasiak/python-zeroconf) |
## Installation
```console
pip install wotpy
```
### Development
The development workflow of wotpy is based on [Taskfile](https://taskfile.dev/installation/), so that's the first thing you need to install.
Then, to create a virtual environment under `.venv`, and install the project in development mode with all the test dependencies, run:
```console
task venv
```
Some wotpy features (e.g., the CoAP binding) are not available outside of Linux. If you have Docker installed on your system and want to run the tests in a Linux environment easily, you can use the Docker-based test task:
```console
$ PYTHON_TAG="3.9" task docker-tests
task: [test-broker] docker run -d -p 1883:1883 --name wotpy_test_broker eclipse-mosquitto:1.6
68bfef102faf3529427e5c7122f41d43490885c04f8a2d673a2c57b3afd68f72
task: [docker-tests] echo "⚙️ Running tests for Python 3.9..."
⚙️ Running tests for Python 3.9...
task: [docker-tests] /Users/agmangas/Documents/Projects/wot-py/pytest-docker.sh
Running python tests for version 3.9 with arguments "-v"
Creating temporary container volume
wotpy_tests_28b82c629b354b83a7fa22a9ed3d6dba
Running test container. Environment setup will take a while.
+ docker run --rm -it -v wotpy_tests_28b82c629b354b83a7fa22a9ed3d6dba:/app -e WOTPY_TESTS_MQTT_BROKER_URL=mqtt://172.16.102.196:1883 python:3.9 /bin/bash -c 'cd /app && pip install --quiet -U .[tests] && pytest -v'
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv
[notice] A new release of pip is available: 23.0.1 -> 23.3.1
[notice] To update, run: pip install --upgrade pip
================================================================================================================================================== test session starts ===================================================================================================================================================
platform linux -- Python 3.9.18, pytest-7.4.2, pluggy-1.3.0 -- /usr/local/bin/python
cachedir: .pytest_cache
rootdir: /app
configfile: pytest.ini
plugins: asyncio-0.21.1, rerunfailures-10.3, Faker-13.16.0, cov-2.5.1
asyncio: mode=strict
collected 154 items
tests/codecs/test_json.py::test_json_codec PASSED [ 0%]
tests/protocols/test_protocols.py::test_all_protocols_combined PASSED [ 1%]
[...]
================================================================================================================================== 148 passed, 6 skipped, 1 warning in 60.70s (0:01:00) ==================================================================================================================================
+ set +x
wotpy_tests_28b82c629b354b83a7fa22a9ed3d6dba
task: [docker-tests] echo "✅ Tests for Python 3.9 completed successfully"
✅ Tests for Python 3.9 completed successfully
```
An MQTT broker is needed as a dependency for the MQTT binding tests. The task will automatically create a new container based on the [eclipse-mosquitto image](https://hub.docker.com/_/eclipse-mosquitto) and expose the broker port to the host. The `WOTPY_TESTS_MQTT_BROKER_URL` environment variable will be set to the broker URL.
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"description": "# wotpy\n\n## Introduction\n\nwotpy is an experimental implementation of a [W3C WoT Runtime](https://github.com/w3c/wot-architecture/blob/master/proposals/terminology.md#wot-runtime) and the [W3C WoT Scripting API](https://github.com/w3c/wot-architecture/blob/master/proposals/terminology.md#scripting-api) in Python.\n\nInspired by the exploratory implementations located in the [thingweb GitHub page](https://github.com/thingweb).\n\n### About the current version\n\nThe current version of the project has been updated in an effort to address stability and deprecation issues. The following changes have been made compared to [version `0.16.0`](https://pypi.org/project/wotpy/0.16.0/):\n\n* The project has been updated to support Python 3.7 and above. All support for Python 2 has been dropped.\n* The project has mostly dropped the Tornado coroutines syntax in favor of the `async`/`await` syntax.\n* The project has removed the dependency from the [`hbmqtt`](https://github.com/beerfactory/hbmqtt) package in favor of [`aiomqtt`](https://github.com/sbtinstruments/aiomqtt) due to the deprecation of the former.\n\nHowever, please note that there's still a **significant pending issue**. Although the project is currently in a reasonably stable state, it does not implement the current version of the W3C WoT specifications. Specifically, the version at the time of writing is based on the following **outdated** references:\n\n* K. Kajimoto, M. Kovatsch, and U. Davuluru, \u2018Web of Things (WoT) Architecture\u2019, W3C, W3C First Public Working Draft, Sep. 2017. [Online]. Available: https://www.w3.org/TR/2017/WD-wot-architecture-20170914/\n* Z. Kis, K. Nimura, D. Peintner, and J. Hund, \u2018Web of Things (WoT) Scripting API\u2019, W3C, W3C Working Draft, Nov. 2018. [Online]. Available: https://www.w3.org/TR/2018/WD-wot-scripting-api-20181129/\n* S. K\u00e4bisch and T. Kamiya, \u2018Web of Things (WoT) Thing Description\u2019, W3C, W3C Working Draft, Oct. 2018. [Online]. Available: https://www.w3.org/TR/2018/WD-wot-thing-description-20181021/\n\n> \u2139\ufe0f It is in our plans to get wotpy up to speed with the latest version of the specifications. We don't have an ETA for this, but we will be working on it in the near future.\n\nIn summary, wotpy is mature enough to be used in projects; in fact, it is being used in production at [CTIC](https://github.com/fundacionctic). However, it is not an adequate representation of the current status of the W3C WoT. We greatly encourage you to check the [Developer Resources section on the WoT website](https://www.w3.org/WoT/developers) to find out about the current state of the art.\n\n## Features\n\nThe wotpy project provides fully functional implementations of four different protocol bindings: MQTT, HTTP, WebSockets, and CoAP. Moreover, it offers a discovery implementation based on Multicast DNS.\n\nThese bindings are built on top of the following dependencies, which are instrumental to the project:\n\n| Feature | Implementation based on |\n| -----------------: | ----------------------------------------------------------------------- |\n| HTTP binding | [tornadoweb/tornado](https://github.com/tornadoweb/tornado) |\n| WebSockets binding | [tornadoweb/tornado](https://github.com/tornadoweb/tornado) |\n| CoAP binding | [chrysn/aiocoap](https://github.com/chrysn/aiocoap) |\n| MQTT binding | [sbtinstruments/aiomqtt](https://github.com/sbtinstruments/aiomqtt) |\n| mDNS discovery | [jstasiak/python-zeroconf](https://github.com/jstasiak/python-zeroconf) |\n\n## Installation\n\n```console\npip install wotpy\n```\n\n### Development\n\nThe development workflow of wotpy is based on [Taskfile](https://taskfile.dev/installation/), so that's the first thing you need to install.\n\nThen, to create a virtual environment under `.venv`, and install the project in development mode with all the test dependencies, run:\n\n```console\ntask venv\n```\n\nSome wotpy features (e.g., the CoAP binding) are not available outside of Linux. If you have Docker installed on your system and want to run the tests in a Linux environment easily, you can use the Docker-based test task:\n\n```console\n$ PYTHON_TAG=\"3.9\" task docker-tests\ntask: [test-broker] docker run -d -p 1883:1883 --name wotpy_test_broker eclipse-mosquitto:1.6\n\n68bfef102faf3529427e5c7122f41d43490885c04f8a2d673a2c57b3afd68f72\ntask: [docker-tests] echo \"\u2699\ufe0f Running tests for Python 3.9...\"\n\u2699\ufe0f Running tests for Python 3.9...\ntask: [docker-tests] /Users/agmangas/Documents/Projects/wot-py/pytest-docker.sh\nRunning python tests for version 3.9 with arguments \"-v\"\nCreating temporary container volume\nwotpy_tests_28b82c629b354b83a7fa22a9ed3d6dba\nRunning test container. 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It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv\n\n[notice] A new release of pip is available: 23.0.1 -> 23.3.1\n[notice] To update, run: pip install --upgrade pip\n================================================================================================================================================== test session starts ===================================================================================================================================================\nplatform linux -- Python 3.9.18, pytest-7.4.2, pluggy-1.3.0 -- /usr/local/bin/python\ncachedir: .pytest_cache\nrootdir: /app\nconfigfile: pytest.ini\nplugins: asyncio-0.21.1, rerunfailures-10.3, Faker-13.16.0, cov-2.5.1\nasyncio: mode=strict\ncollected 154 items\n\ntests/codecs/test_json.py::test_json_codec PASSED [ 0%]\ntests/protocols/test_protocols.py::test_all_protocols_combined PASSED [ 1%]\n\n[...]\n\n================================================================================================================================== 148 passed, 6 skipped, 1 warning in 60.70s (0:01:00) ==================================================================================================================================\n+ set +x\nwotpy_tests_28b82c629b354b83a7fa22a9ed3d6dba\ntask: [docker-tests] echo \"\u2705 Tests for Python 3.9 completed successfully\"\n\u2705 Tests for Python 3.9 completed successfully\n```\n\nAn MQTT broker is needed as a dependency for the MQTT binding tests. 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