Add most of the structure! plus several Base Layer docs

.gitignore

@@ -0,0 +1 @@
+docs/_build/

docs/backup/borg.rst

@@ -0,0 +1,5 @@
+
+Borg
+====
+
+TODO

docs/backup/index.rst

@@ -0,0 +1,10 @@
+
+Backup Layer
+============
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview
+   borg

docs/backup/overview.rst

@@ -0,0 +1,5 @@
+
+Overview
+========
+
+TODO

docs/base/appdir.rst

@@ -0,0 +1,136 @@
+
+.. highlight:: sh
+
+App Folder
+==========
+
+Here we describe the "app folder" (aka. "app dir"), for instance at
+``/srv/envs/poser/app``, which contains all config and data for the app.
+
+Rationale
+---------
+
+We'll use a typical Linux example here.  Let's say we have a "poser" virtual
+environment in the default location.  By default the folder structure within
+the virtual environment may look something like this:
+
+.. code-block:: none
+
+   /srv/envs/poser
+   ├── bin
+   ├── include
+   ├── lib
+   │   └── python3.8
+   ├── man
+   └── share
+
+Once the Python package(s) for our app have been installed to the virtual
+environment, we will create an "app" folder in the environment root.  This app
+folder will contain all config, data and log files for the app.
+
+The idea here is that a proper (minimal) backup for the app, should only
+*require* this "app dir" but the other virtual environment folders need not be
+included in the backup (although they still can be, of course).
+
+
+Making the App Dir
+------------------
+
+This may be done with or without activating your virtual environment.
+
+If your env is activated::
+
+   rattail make-appdir
+
+If your env is *not* activated::
+
+   cd /srv/envs/poser
+   bin/rattail make-appdir
+
+
+Structure
+---------
+
+Keep in mind that the following is just an example.  Each app is unique and
+many of the folders described below can live elsewhere as long as the app is
+configured appropriately.  But this example is "typical" so its conventions
+should be used unless there is a good reason not to.
+
+For the sake of completeness here we will assume a fairly robust app, which
+uses several possible features and has been running a while.  Here is what the
+final virtual environment may look like:
+
+.. code-block:: none
+
+   /srv/envs/poser
+   ├── app
+   │   ├── data
+   │   │   ├── batches
+   │   │   │   ├── inventory
+   │   │   │   ├── vendor_catalog
+   │   │   │   └── vendor_invoice
+   │   │   ├── exports
+   │   │   │   ├── instacart_product_export
+   │   │   │   └── report_output
+   │   │   ├── templates
+   │   │   ├── upgrades
+   │   │   └── uploads
+   │   ├── log
+   │   ├── luigi
+   │   │   ├── 2020
+   │   │   ├── 2021
+   │   │   └── log
+   │   ├── luigitasks
+   │   ├── sessions
+   │   │   ├── data
+   │   │   └── lock
+   │   └── work
+   │       ├── csv
+   │       ├── generated-projects
+   │       └── user-files
+   ├── bin
+   ├── include
+   ├── lib
+   │   └── python3.8
+   ├── man
+   └── share
+
+First you may note that the above does not include a "config" folder.  All
+config files, and most scripts, will generally live directly within the "app"
+folder itself.
+
+And now for a rundown of the "important" folders you do see above:
+
+``app/data`` ideally contains all "true" data for the app.  What we mean by
+that is, any data which the app requires to be 100% fully functional.  Much of
+this data is generated by the app itself, but should remain available for later
+display within the app.
+
+``app/data/batches`` contains all data files used as input, or generated as
+output, for various "batches" within the app.
+
+``app/data/exports`` contains all "export" files generated by the app,
+e.g. when certain reports are ran etc.
+
+``app/data/templates`` may contain certain template files needed by the app
+when it is generating various kinds of output.
+
+``app/data/upgrades`` contains the before and after package snapshots, and
+command output etc. when an app upgrade is executed.
+
+``app/data/uploads`` is more of a temp folder, used to store files uploaded by
+a user within the web app, until they are further processed.
+
+``app/log`` is where all log files go for the app proper.
+
+``app/luigi`` is where Luigi (if used) will keep track of which individual
+tasks have already been ran for a given date.
+
+``app/luigi/log`` will contain log files for both the Luigi server and client.
+
+``app/luigitasks`` contains the task logic to be ran by Luigi.
+
+``app/sessions`` contains the "user session" data for the web app(s).
+
+``app/work`` is more of a temp folder; its contents may vary over time and are
+not considered essential to the app.

docs/base/commands.rst

@@ -0,0 +1,23 @@
+
+Running Commands
+================
+
+TODO
+
+
+Typical Usage
+-------------
+
+TODO
+
+
+Running as System User
+----------------------
+
+TODO
+
+
+Usage with ``sudo``
+-------------------
+
+TODO

docs/base/config/db.rst

@@ -0,0 +1,86 @@
+
+.. highlight:: ini
+
+Storing Config in DB
+====================
+
+We're getting ahead of ourselves a little here, if you're reading this manual
+straight through.  But for reference sake this probably belongs here.
+
+Settings Table
+--------------
+
+If you already have a Rattail DB, then it has a table named ``setting`` which
+is designed to store config values.  It's just a regular table so you can write
+settings via SQL if you like:
+
+.. code-block:: sql
+
+   insert into setting (name, value) values ('rattail.app_title', 'Poser');
+
+   update setting set value = 'Something Else' where name = 'rattail.app_title';
+
+Although the main reason for putting settings in the DB is usually so you can
+edit them via the web app.
+
+
+Telling App to Read Config from DB
+----------------------------------
+
+Well first of all we must assume that the DB connection itself is configured.
+More on that later but let's say you have this in place::
+
+   [rattail.db]
+   default.url = postgresql://user:password@localhost/poser
+
+Then you also must tell the Rattail config engine that a) it should read config
+values from the DB at all, but probably also b) it should *prefer* values from
+the DB over what was read from file.  Do this within your config file::
+
+   [rattail.config]
+   usedb = true
+   preferdb = true
+
+With this in place, when the app requests a config value, it will come from the
+DB if present, falling back to the file value if that exists.
+
+
+File vs. DB Setting Names
+-------------------------
+
+You may have noticed that the SQL examples above, and the examples used in
+:doc:`syntax` are really for the same 'app_title' setting, but there is a key
+difference in naming.
+
+So in a config file you might have this snippet to define a setting::
+
+   [rattail]
+   app_title = Poser
+
+But then that same setting is written in SQL as:
+
+.. code-block:: sql
+
+   insert into setting (name, value) values ('rattail.app_title', 'Poser');
+
+In other words the "section" and "option" names from the config file, are
+joined together with a dot, for the DB setting name.
+
+When the app requests a config value, it must specify both a section and
+option.  The config engine then will auto-join them as needed when doing DB
+lookups.
+
+.. code-block:: python
+
+   config.get('rattail', 'app_title')
+
+
+Avoiding the DB
+---------------
+
+The app can request config from "file only" if it needs to.  It just has to
+specify a flag when reading the value, for example:
+
+.. code-block:: python
+
+   config.get('rattail', 'app_title', usedb=False)

docs/base/config/defined.rst

@@ -0,0 +1,11 @@
+
+Defined Settings
+================
+
+There are a number of config settings which a given Poser/Rattail app may
+leverage.  Most if not all are optional.  We'll try to describe them here.
+
+Note that we will present each in terms of a "section" and "option" pair,
+i.e. using the naming convention found in a config file vs. that of DB.
+
+TODO!

docs/base/config/generate.rst

@@ -0,0 +1,21 @@
+
+Generating Config Files
+=======================
+
+Rattail is able to generate "starting point" config files for you, for any of
+the types described in :doc:`paths`.  Usually you will need to edit them
+further, but the basic structure can be provided automatically.
+
+Run any of these commands from your env root (e.g. ``/srv/envs/poser``)
+depending on which types of files you need:
+
+.. code-block:: sh
+
+   bin/rattail make-config -O app/ -T rattail
+   bin/rattail make-config -O app/ -T quiet
+   bin/rattail make-config -O app/ -T web
+   bin/rattail make-config -O app/ -T datasync
+   bin/rattail make-config -O app/ -T filemon
+
+Each generated file should contain "TODO" comments directing your attention to
+settings which may require adjustment.

docs/base/config/index.rst

@@ -0,0 +1,16 @@
+
+Configuration
+=============
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview
+   syntax
+   paths
+   inheritance
+   generate
+   logging
+   db
+   defined

docs/base/config/inheritance.rst

@@ -0,0 +1,72 @@
+
+.. highlight:: ini
+
+Config File Inheritance
+=======================
+
+It may already be obvious, if you read :doc:`paths`, but it's possible for
+config files to "inherit" from one another.  The general idea is that all
+config is collected from various files, when assembling the "final" config to
+be used by the app.
+
+For a simple example let's assume you have just 2 typical config files in your
+app dir:
+
+* ``/srv/envs/poser/app/rattail.conf``
+* ``/srv/envs/poser/app/quiet.conf``
+
+Let's say that ``rattail.conf`` is a "complete" config file and may be used
+directly, as-is.  And that ``quiet.conf`` is not complete but "inherits" from
+``rattail.conf`` (as is typical) so that it also may be used directly.
+
+In other words either of these commands should work when ran from
+``/srv/envs/poser``:
+
+.. code-block:: sh
+
+   bin/rattail -c app/rattail.conf make-uuid
+   bin/rattail -c app/quiet.conf make-uuid
+
+The contents of ``quiet.conf`` are usually quite minimal::
+
+   [rattail.config]
+   include = %(here)s/rattail.conf
+
+   [handler_console]
+   level = INFO
+
+The "include" option within "rattail.config" section above, tells the Rattail
+config parser to bring in the contents of ``rattail.conf`` whenever it is
+reading ``quiet.conf`` - although any settings defined in ``quiet.conf`` will
+override whatever was brought in from ``rattail.conf``.  (In this example,
+``quiet.conf`` only needs to set ``level = INFO`` to cut down on some logging
+output on the console.)
+
+Caveats
+-------
+
+There is a gotcha which can break the inheritance logic, but it can be avoided
+if you follow one simple rule:
+
+The primary config file you reference when invoking the app
+(e.g. ``bin/rattail -c qpp/quiet.conf ...``) must *not* contain a 'loggers'
+section, i.e. it should *not* have a snippet like this::
+
+   [loggers]
+   keys = root, exc_logger, ...
+
+To be clear the gotcha only exists when:
+
+* config file which app is told to read, contains snippet like above
+* config file has an ``include`` setting, meaning inheritance should happen
+* config file also says to configure logging
+
+The reason it breaks is that we let Python standard ``logging`` module take
+care of the logging configuration, but it will try to do so using the specified
+config file (e.g. ``quiet.conf``) *only* instead of doing so with the combined
+result.
+
+So again, just make sure there is no 'loggers' section in the config file you
+present to your app.  Or alternatively, you can make sure that same config file
+*does* have all logging config within it, so e.g. inheritance would not affect
+that part.

docs/base/config/logging.rst

@@ -0,0 +1,32 @@
+
+.. highlight:: ini
+
+Configuring Logging
+===================
+
+Rattail relies on Python standard ``logging`` module to configure logging.
+However if :doc:`inheritance` is involved then Rattail will first combine all
+applicable config files into a single file before handing that off to
+`logging.config.fileConfig()`_.
+
+.. _logging.config.fileConfig(): https://docs.python.org/3/library/logging.config.html#logging.config.fileConfig
+
+Rattail does not do any of this though, unless config says to.  So if you want
+it to configure logging in this way, specify this in your config file::
+
+   [rattail.config]
+   configure_logging = true
+
+Beyond that you must ensure your config file(s) contains appropriate settings
+for logging.  Rattail `has a sample`_ ``rattail.conf`` which includes a typical
+logging section.  (This is the source used to generate a new file when you run
+``rattail make-config -T rattail`` command.)
+
+.. _has a sample: https://kallithea.rattailproject.org/rattail-project/rattail/files/master/rattail/data/config/rattail.conf
+
+See the Python docs for more info, in particular these sections:
+
+* `Configuration file format <https://docs.python.org/3/library/logging.config.html#logging-config-fileformat>`_
+* `Logging Levels <https://docs.python.org/3/howto/logging.html#logging-levels>`_
+* `Useful Handlers <https://docs.python.org/3/howto/logging.html#useful-handlers>`_
+* `Formatters <https://docs.python.org/3/howto/logging.html#formatters>`_

docs/base/config/overview.rst

@@ -0,0 +1,31 @@
+
+Overview
+========
+
+The basic idea of course is that the app needs to be configurable, so the
+question is how to go about that.
+
+The short answer is, "We always use config files but can also store config in
+the database where applicable."
+
+The advantage to config files is that they are easier to get started with, but
+also we can restrict access at the file system level, which means we can (more
+safely) store sensitive information in them.
+
+The advantage to storing config in DB, is that one can change config on-the-fly
+using e.g. the web app.  (Whereas changing a config file requires the app to be
+restarted, so it will read the new file contents.)
+
+Generally speaking, certain config which is needed during app startup (e.g. DB
+access credentials and logging config), or which is deemed "sensitive"
+(passwords, API keys etc.), is kept in config files, and the remainder is kept
+in the DB (if there is one).
+
+This behavior is itself configurable, but most typically, the app will not care
+where a given setting is defined (file vs. DB) but if one is defined in both
+places the DB value would win.  But the app can request a config value from
+"file only" and ignore the DB, where that is desirable (e.g. when reading
+settings required for startup).
+
+We are still in the Base Layer docs at this point, so we'll focus on the config
+files first, and come back to the DB near the end.

docs/base/config/paths.rst

@@ -0,0 +1,67 @@
+
+Typical File Paths
+==================
+
+Here we'll describe some typical locations and filenames for config.
+
+
+App-Wide
+--------
+
+Every app will need at least one config file.  The convention is to name this
+file ``rattail.conf`` and place it directly in your app dir, e.g.
+``/srv/envs/poser/app/rattail.conf``
+
+Many apps will benefit from having multiple config files, primarily for the
+sake of organization and "separation of concerns".  A robust app with several
+features then might have the following, all in its app dir:
+
+``rattail.conf`` is considered the "core" config file for the app, which means
+that no matter how you run the app, this file should be (in)directly referenced
+somehow, so that it affects the runtime behavior.
+
+``quiet.conf`` is meant to be used for ad-hoc app commands which you run from
+the console.  It is a thin wrapper around ``rattail.conf`` and merely tries to
+cut down on some of the output (logging) "noise" from commands.
+
+``cron.conf`` is also a thin wrapper, which cuts down on command output "noise"
+and uses a custom logging file.
+
+``web.conf`` is meant to be used by the standard web app only; it defines the
+config needed to run the web app and uses a custom logging file.
+
+``webapi.conf`` is meant to be used by the web API only; it defines the config
+needed to run the web API and uses a custom logging file.
+
+``datasync.conf`` is meant to be used only by the ``datasync`` commands; it
+defines the config needed to run datasync and uses a custom logging file.
+
+``filemon.conf`` is meant to be used only by the ``filemon`` commands; it
+defines the config needed to run filemon and uses a custom logging file.
+
+``bouncer.conf`` is meant to be used only by the ``bouncer`` commands; it
+defines the config needed to run bouncer and uses a custom logging file.
+
+
+Machine-Wide
+------------
+
+If you have several apps running on a given machine, you may wish to share some
+"common" config among all the apps.  If so you can make a "machine-wide" config
+file to store that common config.
+
+The convention here is to place the file at ``/etc/rattail/rattail.conf``
+although you could do whatever you like.
+
+
+Site-Wide
+---------
+
+This is similar to the machine-wide scenario, but if you have multiple
+*machines* which run apps, you may wish to share the common config in such a
+way that all machines could access it.  We call this a "site-wide" config file.
+
+How exactly you go about making this file available is beyond our scope here,
+but a hint is to use Samba/CIFS.  True location of the file would be anywhere
+you like, on whichever machine you elected to be the provider of this common
+config.

docs/base/config/syntax.rst

@@ -0,0 +1,59 @@
+
+.. highlight:: ini
+
+Config File Syntax
+==================
+
+Rattail config files follow the traditional `INI file`_ syntax, e.g. here is a
+snippet::
+
+   [rattail]
+   app_title = Poser
+
+.. _INI file: https://en.wikipedia.org/wiki/INI_file
+
+That example can be broken down into 3 parts:
+
+* section (the name in square brackets, "rattail")
+* option (the name of the setting being defined, "app_title")
+* value (the value for the setting, "Poser")
+
+When logic within the app needs to retrieve a value from config, it does so by
+requesting both the section and option by name, for example:
+
+.. code-block:: python
+
+   config.get('rattail', 'app_title')   # returns "Poser"
+
+Under the hood we use Python's `configparser`_ module to parse config files.
+
+.. _configparser: https://docs.python.org/3/library/configparser.html
+
+If you think it would be handy for your app to have a new setting for some
+reason, just create one and use it like so::
+
+   [poser]
+   foo = bar
+
+.. code-block:: python
+
+   config.get('poser', 'foo')   # returns "bar"
+
+So far our examples have been for simple string values.  There is no way within
+the standard INI file syntax, to define any data types other than string.
+However the Rattail config parser/object can "coerce" values to a given type if
+so requested, for example::
+
+   [poser]
+   foo_flag = true
+   foo_number = 42
+   foo_entries =
+       first
+       second
+       third
+
+.. code-block:: python
+
+   config.getbool('poser', 'foo_flag')      # returns True
+   config.getint('poser', 'foo_number')     # returns 42
+   config.getlist('poser', 'foo_entries')   # returns ["first", "second", "third"]

docs/base/email.rst

@@ -0,0 +1,53 @@
+
+Sending Email
+=============
+
+TODO
+
+
+Postfix Setup
+-------------
+
+TODO
+
+
+Types of Emails
+---------------
+
+TODO
+
+
+Configuring SMTP
+----------------
+
+TODO
+
+
+Configuring Recipients etc.
+---------------------------
+
+TODO
+
+
+Customizing Templates
+---------------------
+
+TODO
+
+
+How to programmatically send email
+----------------------------------
+
+TODO
+
+
+Nod to email via error logging
+------------------------------
+
+TODO
+
+
+Handling Email Bounces
+----------------------
+
+TODO

docs/base/filemon.rst

@@ -0,0 +1,5 @@
+
+File Monitoring
+===============
+
+TODO

docs/base/handlers.rst

@@ -0,0 +1,5 @@
+
+App Handlers
+============
+
+TODO

docs/base/index.rst

@@ -0,0 +1,19 @@
+
+Base Layer
+==========
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   reqs
+   venv
+   install
+   appdir
+   config/index
+   commands
+   scripts
+   email
+   supervisor
+   filemon
+   handlers

docs/base/install.rst

@@ -0,0 +1,49 @@
+
+.. highlight:: sh
+
+Installation
+============
+
+How exactly you install an app to your virtual environment can vary.
+
+However they all involve using ``pip install`` in some way or another.  And
+therefore your virtual environment should be "activated" when running the
+commands shown below.
+
+
+Installing from PyPI
+--------------------
+
+If the app is published to the `Python Package Index`_ (PyPI) then you can just
+``pip install`` it.  For instance that is the case for `Theo`_, so if that's
+what you're after then::
+
+   pip install tailbone-theo
+
+.. _Python Package Index: https://pypi.org/
+.. _Theo: https://pypi.org/project/tailbone-theo/
+
+
+Installing from Source
+----------------------
+
+If you need (or want) to install from source, then of course the first step is
+to obtain the source code for the app.  Here we'll again use Theo as our example::
+
+   git clone https://kallithea.rattailproject.org/rattail-project/theo
+
+Then you would install that to your virtual environment like so::
+
+   pip install -e ./theo
+
+
+Sanity Check
+------------
+
+Before we do anything else let's confirm that you have the 'rattail' package
+installed, at the very least.  With your env still activated try this::
+
+   rattail --version
+
+That of course should spit out a version number; if you see anything else then
+you may need to troubleshoot that first.

docs/base/reqs.rst

@@ -0,0 +1,14 @@
+
+Requirements
+============
+
+The only "hard" requirement is a relatively modern Python 3.
+
+For best results, as of this writing that should be 3.6+ although generally
+speaking, the newer the better.
+
+You should also know that more attention by far has been given to Linux over
+the years.  We'll try to ensure this manual works for Windows too but FYI that
+it's possible we miss something.  Thus far all production installs are done on
+Debian or Ubuntu Linux so if you can use those then your experience may be
+better.

docs/base/scripts.rst

@@ -0,0 +1,17 @@
+
+Writing Scripts
+===============
+
+TODO
+
+
+Python Scripts
+--------------
+
+TODO
+
+
+Shell Scripts
+-------------
+
+TODO

docs/base/supervisor.rst

@@ -0,0 +1,11 @@
+
+Supervisord
+===========
+
+TODO
+
+
+Linux Only...
+-------------
+
+TODO

docs/base/venv.rst

@@ -0,0 +1,121 @@
+
+.. highlight:: sh
+
+Virtual Environment
+===================
+
+Regardless of platform, you are strongly encouraged to use a `virtual
+environment`_ for your app.  This allows you to experiment with installation
+without affecting the rest of your system.
+
+.. _virtual environment: https://packaging.python.org/glossary/#term-Virtual-Environment
+
+
+Choosing a Location
+-------------------
+
+It can be helpful to standardize the location of all virtual environments
+regardless of their purpose.  The tool you use to create a virtual environment
+may (or may not) have opinions on that, but so do we:
+
+This manual will assume one of the following based on platform:
+
+* Linux - ``/srv/envs``
+* Windows - ``C:\envs``
+
+So for instance if you run Linux and make a new virtual environment named
+"poser" then it would live in ``/srv/envs/poser`` according to the above.
+
+Note that you may need to consider file permissions etc. when choosing your
+actual location, but if possible you're encouraged to use the examples shown
+here.
+
+
+Choosing a User
+---------------
+
+To be thorough you may need to consider which user should "own" the virtual
+environment and installed app.  If you're just getting started then you can
+skip this section for now and run all commands as yourself, then revisit the
+issue later as needed.
+
+Why the User Matters
+^^^^^^^^^^^^^^^^^^^^
+
+The virtual environment and installed app, its config and data files etc. must
+be owned by someone after all.  So at the most basic level the user matters
+simply because it can't be "nobody" - a choice must be made.
+
+Some config, data and/or log files may contain sensitive information (passwords
+etc.) and should be "locked down" in some way to prevent unauthorized access.
+So then the "owner" would have access to such files but perhaps no other users
+would.
+
+When app commands are ran, by yourself in the console or e.g. via cron job, the
+user which the command "runs as" will matter, in the sense that this user will
+need access to any "restricted" (e.g. config) files.  So typically all commands
+would be ran as the same user who "owns" the app.
+
+User Options
+^^^^^^^^^^^^
+
+**"yourself"** - For instance my own username is 'lance' and so for convenience
+in development, I might just run all commands as myself, and let all files be
+owned by myself.  This is the simplest option and most commands in this manual
+will work as-is for this option.
+
+**"root"** - When deploying the app to a server, maybe I am connecting to it
+via SSH as the 'lance' user, but let's say I am just one of several users who
+needs to connect, and so it doesn't make for 'lance' to be the file owner, or
+to run app commands as 'lance'.  You can, if you really want to, use 'root' as
+the app owner/user, although you are encouraged to use one of the other options
+below instead.
+
+**"admin"** - In some organizations there is a dedicated "admin" user defined
+within LDAP etc.  If such a user is already present in the system then there
+may be no reason not to use this for the app owner/user.
+
+**"rattail"** - This option is my personal preference.  Here we create a
+dedicated system user whose sole purpose is to be the app owner/user.  I always
+name this user 'rattail' and you can think of it like the 'www-data' or
+'postgres' user accounts.  Basically this is a "true" system user meaning it
+doesn't correspond to any person.  But it can be defined on many machines for
+automation's sake, e.g. if SSH keys are shared too then 'rattail' user on one
+machine can effectively run 'rattail' commands on any other machine.
+
+
+Creating a Virtual Environment
+------------------------------
+
+Please also see `Creating a virtual environment`_ in the Python Packaging User
+Guide.
+
+.. _Creating a virtual environment: https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#creating-a-virtual-environment
+
+For our purposes, on Linux you can do this::
+
+   python3 -m venv /srv/envs/poser
+
+
+Using a Virtual Environment
+---------------------------
+
+If you're new to virtual environments then you're encouraged to read over the
+following, from the Python Packaging User Guide:
+
+* `Activating a virtual environment <https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#activating-a-virtual-environment>`_
+* `Leaving the virtual environment <https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#leaving-the-virtual-environment>`_
+
+So for our Linux example you might activate with::
+
+   source /srv/envs/poser/bin/activate
+
+*All* commands in this manual will assume you have a virtual environment, but
+*most* of them will not require it to be "activated" to run the command.  The
+main exception to that is ``pip`` commands, which *do* assume the virtual
+environment is activated.
+
+It may be helpful to ensure your new virtual environment has the lastest pip
+and friends.  Note that your env should be activated when running this::
+
+   pip install -U pip setuptools wheel

docs/conf.py

@@ -17,7 +17,7 @@
 
 # -- Project information -----------------------------------------------------
 
-project = 'rattail-guide'
+project = 'rattail-manual'
 copyright = '2021, Lance Edgar'
 author = 'Lance Edgar'
 

docs/data/batches.rst

@@ -0,0 +1,5 @@
+
+Data Batch Processing
+=====================
+
+TODO

docs/data/datasync.rst

@@ -0,0 +1,5 @@
+
+Data Synchronization
+====================
+
+TODO

docs/data/db.rst

@@ -0,0 +1,5 @@
+
+Rattail Database
+================
+
+TODO

docs/data/importing.rst

@@ -0,0 +1,5 @@
+
+Data Import / Export
+====================
+
+TODO

docs/data/index.rst

@@ -0,0 +1,18 @@
+
+Data Layer
+==========
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   db
+   trainwreck
+   other
+   importing
+   datasync
+   batches
+   multinode
+   tempmon
+   tasks
+   patterns

docs/data/multinode.rst

@@ -0,0 +1,5 @@
+
+Multiple App Nodes
+==================
+
+TODO

docs/data/other.rst

@@ -0,0 +1,5 @@
+
+POS and Other Data Stores
+=========================
+
+TODO

docs/data/patterns.rst

@@ -0,0 +1,5 @@
+
+Common Patterns
+===============
+
+TODO

docs/data/tasks.rst

@@ -0,0 +1,5 @@
+
+Common Tasks
+============
+
+TODO

docs/data/tempmon.rst

@@ -0,0 +1,5 @@
+
+Temperature Monitoring
+======================
+
+TODO

docs/data/trainwreck.rst

@@ -0,0 +1,5 @@
+
+Trainwreck Database
+===================
+
+TODO

docs/deploy/fabric.rst

@@ -0,0 +1,5 @@
+
+Fabric
+======
+
+TODO

docs/deploy/index.rst

@@ -0,0 +1,10 @@
+
+Deployment Layer
+================
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview
+   fabric

docs/deploy/overview.rst

@@ -0,0 +1,5 @@
+
+Overview
+========
+
+TODO

docs/index.rst

@@ -1,15 +1,38 @@
-.. rattail-guide documentation master file, created by
-   sphinx-quickstart on Wed Jan  6 15:33:34 2021.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
 
-Welcome to rattail-guide's documentation!
-=========================================
+Rattail Manual
+==============
+
+This is "the reference manual" for Rattail, intended primarily for developers.
+It assumes the reader is involved with the creation, customization and/or
+maintenance of a Poser/Rattail app.  It tries to explain the concepts involved
+and hopefully tie them all together.
+
+If you prefer step-by-step instructions for creating your own app then see also
+the `Rattail Tutorial`_.
+
+.. _Rattail Tutorial: https://rattailproject.org/docs/rattail-tutorial/
+
+This manual is primarily organized according to the possible "layers" of a
+Poser/Rattail app:
+
+* :doc:`base/index` - general app install, command line, plus filemon etc.
+* :doc:`data/index` - when a DB or data import/export come into it
+* :doc:`web/index` - all things web
+* :doc:`luigi/index` - using Luigi for better overnight automation
+* :doc:`deploy/index` - deals with production deployment
+* :doc:`backup/index` - backing up the production system
 
 .. toctree::
    :maxdepth: 2
    :caption: Contents:
 
+   readfirst
+   base/index
+   data/index
+   web/index
+   luigi/index
+   deploy/index
+   backup/index
 
 
 Indices and tables

docs/luigi/index.rst

@@ -0,0 +1,10 @@
+
+Luigi Layer
+===========
+
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview

docs/luigi/overview.rst

@@ -0,0 +1,5 @@
+
+Overview
+========
+
+TODO

docs/readfirst.rst

@@ -0,0 +1,16 @@
+
+Read This First
+===============
+
+Here we just want to touch on some conventions used by this manual.
+
+We use the name "Poser" (or "poser") to refer to *any* app based on Rattail.
+For example this can refer to:
+
+* `Theo <https://rattailproject.org/moin/Theo>`_
+* `Rattail Demo <https://rattailproject.org/moin/RattailDemo>`_
+* *your* custom app
+
+Poser is not a real thing in other words; that name is made up and you should
+replace it (mentally and literally) when reading these docs and running
+commands etc.

docs/web/index.rst

@@ -0,0 +1,13 @@
+
+Web Layer
+=========
+
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview
+   webmain
+   webapi
+   spa

docs/web/overview.rst

@@ -0,0 +1,5 @@
+
+Overview
+========
+
+TODO

docs/web/spa.rst

@@ -0,0 +1,5 @@
+
+Single-Page Apps
+================
+
+TODO

docs/web/webapi.rst

@@ -0,0 +1,17 @@
+
+Web API
+=======
+
+TODO
+
+
+Common Tasks
+------------
+
+TODO
+
+
+Common Patterns
+---------------
+
+TODO

docs/web/webmain.rst

@@ -0,0 +1,17 @@
+
+Default Web App
+===============
+
+TODO
+
+
+Common Tasks
+------------
+
+TODO
+
+
+Common Patterns
+---------------
+
+TODO