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# Frequently Asked Questions | ||
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## Why did my job fail with an `IncompleteJSONError`? | ||
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``` | ||
An exception occurred: `IncompleteJSONError: lexical error: invalid char in json text. <meta (right here) ------^ | ||
``` | ||
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This exception probably means that your ServiceNow developer instance is currently hibernating and needs to be awoken. |
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# Contributing | ||
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Pull requests are welcomed and automatically built and tested against multiple version of Python and multiple version of Nautobot through TravisCI. | ||
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The project is packaged with a light development environment based on `docker-compose` to help with the local development of the project and to run the tests within TravisCI. | ||
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The project is following Network to Code software development guideline and is leveraging: | ||
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- Black, Pylint, Bandit and pydocstyle for Python linting and formatting. | ||
- Django unit test to ensure the plugin is working properly. | ||
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## Development Environment | ||
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The development environment can be used in 2 ways. First, with a local poetry environment if you wish to develop outside of Docker. Second, inside of a docker container. | ||
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### Invoke tasks | ||
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The [PyInvoke](http://www.pyinvoke.org/) library is used to provide some helper commands based on the environment. There are a few configuration parameters which can be passed to PyInvoke to override the default configuration: | ||
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* `nautobot_ver`: the version of Nautobot to use as a base for any built docker containers (default: develop-latest) | ||
* `project_name`: the default docker compose project name (default: nautobot-ssot-servicenow) | ||
* `python_ver`: the version of Python to use as a base for any built docker containers (default: 3.6) | ||
* `local`: a boolean flag indicating if invoke tasks should be run on the host or inside the docker containers (default: False, commands will be run in docker containers) | ||
* `compose_dir`: the full path to a directory containing the project compose files | ||
* `compose_files`: a list of compose files applied in order (see [Multiple Compose files](https://docs.docker.com/compose/extends/#multiple-compose-files) for more information) | ||
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Using PyInvoke these configuration options can be overridden using [several methods](http://docs.pyinvoke.org/en/stable/concepts/configuration.html). Perhaps the simplest is simply setting an environment variable `INVOKE_NAUTOBOT_SSOT_SERVICENOW_VARIABLE_NAME` where `VARIABLE_NAME` is the variable you are trying to override. The only exception is `compose_files`, because it is a list it must be overridden in a yaml file. There is an example `invoke.yml` in this directory which can be used as a starting point. | ||
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### Local Poetry Development Environment | ||
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1. Copy `development/creds.example.env` to `development/creds.env` (This file will be ignored by git and docker) | ||
2. Uncomment the `POSTGRES_HOST`, `REDIS_HOST`, and `NAUTOBOT_ROOT` variables in `development/creds.env` | ||
3. Create an invoke.yml with the following contents at the root of the repo: | ||
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```shell | ||
--- | ||
nautobot_ssot_servicenow: | ||
local: true | ||
compose_files: | ||
- "docker-compose.requirements.yml" | ||
``` | ||
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3. Run the following commands: | ||
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```shell | ||
poetry shell | ||
poetry install | ||
export $(cat development/dev.env | xargs) | ||
export $(cat development/creds.env | xargs) | ||
``` | ||
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4. You can now run nautobot-server commands as you would from the [Nautobot documentation](https://nautobot.readthedocs.io/en/latest/) for example to start the development server: | ||
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```shell | ||
nautobot-server runserver 0.0.0.0:8080 --insecure | ||
``` | ||
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Nautobot server can now be accessed at [http://localhost:8080](http://localhost:8080). | ||
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### Docker Development Environment | ||
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This project is managed by [Python Poetry](https://python-poetry.org/) and has a few requirements to setup your development environment: | ||
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1. Install Poetry, see the [Poetry Documentation](https://python-poetry.org/docs/#installation) for your operating system. | ||
2. Install Docker, see the [Docker documentation](https://docs.docker.com/get-docker/) for your operating system. | ||
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Once you have Poetry and Docker installed you can run the following commands to install all other development dependencies in an isolated python virtual environment: | ||
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```shell | ||
poetry shell | ||
poetry install | ||
invoke start | ||
``` | ||
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Nautobot server can now be accessed at [http://localhost:8080](http://localhost:8080). | ||
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## CLI Helper Commands | ||
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The project is coming with a CLI helper based on [invoke](http://www.pyinvoke.org/) to help setup the development environment. The commands are listed below in 3 categories `dev environment`, `utility` and `testing`. | ||
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Each command can be executed with `invoke <command>`. Environment variables `INVOKE_NAUTOBOT_SSOT_SERVICENOW_PYTHON_VER` and `INVOKE_NAUTOBOT_SSOT_SERVICENOW_NAUTOBOT_VER` may be specified to override the default versions. Each command also has its own help `invoke <command> --help` | ||
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### Docker dev environment | ||
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```no-highlight | ||
build Build all docker images. | ||
debug Start Nautobot and its dependencies in debug mode. | ||
destroy Destroy all containers and volumes. | ||
restart Restart Nautobot and its dependencies. | ||
start Start Nautobot and its dependencies in detached mode. | ||
stop Stop Nautobot and its dependencies. | ||
``` | ||
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### Utility | ||
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```no-highlight | ||
cli Launch a bash shell inside the running Nautobot container. | ||
create-user Create a new user in django (default: admin), will prompt for password. | ||
makemigrations Run Make Migration in Django. | ||
nbshell Launch a nbshell session. | ||
``` | ||
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### Testing | ||
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```no-highlight | ||
bandit Run bandit to validate basic static code security analysis. | ||
black Run black to check that Python files adhere to its style standards. | ||
flake8 This will run flake8 for the specified name and Python version. | ||
pydocstyle Run pydocstyle to validate docstring formatting adheres to NTC defined standards. | ||
pylint Run pylint code analysis. | ||
tests Run all tests for this plugin. | ||
unittest Run Django unit tests for the plugin. | ||
``` | ||
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## Project Documentation | ||
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Project documentation is generated by [mkdocs](https://www.mkdocs.org/) from the documentation located in the docs folder. You can configure [readthedocs.io](https://readthedocs.io/) to point at this folder in your repo. For development purposes a `docker-compose.docs.yml` is also included. A container hosting the docs will be started using the invoke commands on [http://localhost:8001](http://localhost:8001), as changes are saved the docs will be automatically reloaded. | ||
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