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README.rst
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README.rst
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Devicehub
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#########
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Devicehub is a distributed IT Asset Management System focused in reusing
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devices, created under the project
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`eReuse.org <https://www.ereuse.org>`__.
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This README explains how to install and use Devicehub.
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`The documentation <http://devicehub.ereuse.org>`_ explains the concepts
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and the API.
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Devicehub is built with `Teal <https://github.com/ereuse/teal>`__ and
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`Flask <http://flask.pocoo.org>`__.
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Installing
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**********
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The requirements are:
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- Python 3.7.3 or higher. In debian 10 is ``# apt install python3``.
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- `PostgreSQL 11 or higher <https://www.postgresql.org/download/>`__.
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- Weasyprint
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`dependencies <http://weasyprint.readthedocs.io/en/stable/install.html>`__.
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Install Devicehub with *pip*:
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``pip3 install -U -r requirements.txt -e .``.
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Running
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*******
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Create a PostgreSQL database called *devicehub* by running
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`create-db <examples/create-db.sh>`__:
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- In Linux, execute the following two commands (adapt them to your distro):
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1. ``sudo su - postgres``.
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2. ``bash examples/create-db.sh devicehub dhub``, and password
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``ereuse``.
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- In MacOS: ``bash examples/create-db.sh devicehub dhub``, and password
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``ereuse``.
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Configure project using environment file (you can use provided example as quickstart):
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.. code:: bash
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$ cp examples/env.example .env
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Using the `dh` tool for set up with one or multiple inventories.
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Create the tables in the database by executing:
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.. code:: bash
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$ export dhi=dbtest; dh inv add --common --name dbtest
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Finally, run the app:
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.. code:: bash
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$ export dhi=dbtest;dh run --debugger
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The error ‘bdist_wheel’ can happen when you work with a *virtual environment*.
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To fix it, install in the *virtual environment* wheel
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package. ``pip3 install wheel``
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Multiple instances
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------------------
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Devicehub can run as a single inventory or with multiple inventories,
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each inventory being an instance of the ``devicehub``. To add a new inventory
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execute:
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.. code:: bash
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$ export dhi=dbtest; dh inv add --name dbtest
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Note: The ``dh`` command is like ``flask``, but
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it allows you to create and delete instances, and interface to them
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directly.
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Testing
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*******
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1. ``git clone`` this project.
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2. Create a database for testing executing ``create-db.sh`` like the
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normal installation but changing the first parameter from
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``devicehub`` to ``dh_test``: ``create-db.sh dh_test dhub`` and
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password ``ereuse``.
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3. Execute at the root folder of the project ``python3 setup.py test``.
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Migrations
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**********
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At this stage, migration files are created manually.
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Set up the database:
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.. code:: bash
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$ sudo su - postgres
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$ bash $PATH_TO_DEVIHUBTEAL/examples/create-db.sh devicehub dhub
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Initialize the database:
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.. code:: bash
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$ export dhi=dbtest; dh inv add --common --name dbtest
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This command will create the schemas, tables in the specified database.
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Then we need to stamp the initial migration.
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.. code:: bash
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$ alembic stamp head
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This command will set the revision **fbb7e2a0cde0_initial** as our initial migration.
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For more info in migration stamping please see https://alembic.sqlalchemy.org/en/latest/cookbook.html
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Whenever a change needed eg to create a new schema, alter an existing table, column or perform any
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operation on tables, create a new revision file:
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.. code:: bash
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$ alembic revision -m "A table change"
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This command will create a new revision file with name `<revision_id>_a_table_change`.
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Edit the generated file with the necessary operations to perform the migration:
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.. code:: bash
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$ alembic edit <revision_id>
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Apply migrations using:
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.. code:: bash
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$ alembic -x inventory=dbtest upgrade head
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Then to go back to previous db version:
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.. code:: bash
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$ alembic -x inventory=dbtest downgrade <revision_id>
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To see a full list of migrations use
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.. code:: bash
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$ alembic history
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Generating the docs
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*******************
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1. ``git clone`` this project.
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2. Install plantuml. In Debian 9 is ``# apt install plantuml``.
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3. Execute ``pip3 install -e .[docs]`` in the project root folder.
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4. Go to ``<project root folder>/docs`` and execute ``make html``.
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Repeat this step to generate new docs.
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To auto-generate the docs do ``pip3 install -e .[docs-auto]``, then
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execute, in the root folder of the project
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``sphinx-autobuild docs docs/_build/html``.
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@ -0,0 +1,140 @@
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#Devicehub
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Devicehub is a distributed IT Asset Management System focused in reusing devices, created under the project [eReuse.org](https://www.ereuse.org)
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This README explains how to install and use Devicehub. [The documentation](http://devicehub.ereuse.org) explains the concepts and the API.
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Devicehub is built with [Teal](https://github.com/ereuse/teal) and [Flask](http://flask.pocoo.org).
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# Installing
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The requirements are:
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- Python 3.7.3 or higher. In debian 10 is `# apt install python3`.
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- [PostgreSQL 11 or higher](https://www.postgresql.org/download/).
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- Weasyprint [dependencie](http://weasyprint.readthedocs.io/en/stable/install.html>)
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Install Devicehub with *pip*: `pip3 install -U -r requirements.txt -e .`
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# Running
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Create a PostgreSQL database called *devicehub* by running [create-db](examples/create-db.sh):
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- In Linux, execute the following two commands (adapt them to your distro):
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1. ``sudo su - postgres``.
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2. ``bash examples/create-db.sh devicehub dhub``, and password ``ereuse``.
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- In MacOS: `bash examples/create-db.sh devicehub dhub`, and password `ereuse`.
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Configure project using environment file (you can use provided example as quickstart):
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```bash
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$ cp examples/env.example .env
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```
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Using the `dh` tool for set up with one or multiple inventories.
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Create the tables in the database by executing:
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```bash
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$ export dhi=dbtest; dh inv add --common --name dbtest
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```
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Finally, run the app:
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```bash
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$ export dhi=dbtest;dh run --debugger
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```
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The error ‘bdist_wheel’ can happen when you work with a *virtual environment*.
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To fix it, install in the *virtual environment* wheel
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package. ``pip3 install wheel``
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## Multiple instances
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Devicehub can run as a single inventory or with multiple inventories,
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each inventory being an instance of the ``devicehub``. To add a new inventory
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execute:
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```bash
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$ export dhi=dbtest; dh inv add --name dbtest
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```
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Note: The ``dh`` command is like ``flask``, but it allows you to create and delete instances, and interface to them
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directly.
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# Testing
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1. `git clone` this project.
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2. Create a database for testing executing `create-db.sh` like the
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normal installation but changing the first parameter from
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`devicehub` to `dh_test`: `create-db.sh dh_test dhub` and
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password `ereuse`.
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3. Execute at the root folder of the project `python3 setup.py test`.
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# Migrations
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At this stage, migration files are created manually.
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Set up the database:
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```bash
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$ sudo su - postgres
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$ bash $PATH_TO_DEVIHUBTEAL/examples/create-db.sh devicehub dhub
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```
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Initialize the database:
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```bash
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$ export dhi=dbtest; dh inv add --common --name dbtest
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```
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This command will create the schemas, tables in the specified database.
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Then we need to stamp the initial migration.
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```bash
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$ alembic stamp head
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```
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This command will set the revision **fbb7e2a0cde0_initial** as our initial migration.
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For more info in migration stamping please see https://alembic.sqlalchemy.org/en/latest/cookbook.html
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Whenever a change needed eg to create a new schema, alter an existing table, column or perform any
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operation on tables, create a new revision file:
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```bash
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$ alembic revision -m "A table change"
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```
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This command will create a new revision file with name `<revision_id>_a_table_change`.
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Edit the generated file with the necessary operations to perform the migration:
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```bash
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$ alembic edit <revision_id>
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```
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Apply migrations using:
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```bash
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$ alembic -x inventory=dbtest upgrade head
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```
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Then to go back to previous db version:
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```bash
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$ alembic -x inventory=dbtest downgrade <revision_id>
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```
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To see a full list of migrations use
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```bash
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$ alembic history
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```
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## Generating the docs
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1. `git clone` this project.
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2. Install plantuml. In Debian 9 is `# apt install plantuml`.
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3. Execute `pip3 install -e .[docs]` in the project root folder.
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4. Go to `<project root folder>/docs` and execute `make html`. Repeat this step to generate new docs.
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To auto-generate the docs do `pip3 install -e .[docs-auto]`, then execute, in the root folder of the project `sphinx-autobuild docs docs/_build/html`.
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