larigira/doc/source/install.rst

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Installation
=============
Installing larigira is quite simple. You can install latest version from PyPI
using ``pip install larigira``. Or you can ``git clone
https://git.lattuga.net/boyska/larigira.git`` and run ``python setup.py install``.
As always, the usage of a virtualenv is recommended.
The only supported python version is 3.4.
Configuration
---------------
larigira use MPD in a peculiar way. It can use mpd internal library, but it can
also work with "regular" local files, outside of the library. To do so,
however, it requires you to connect to MPD through the UNIX socket instead of
the TCP port.
So how to create this setup?
inside ``~/.mpdconf``, add the following line::
bind_to_address "~/.mpd/socket"
For larigira, you need to set the ``MPD_HOST`` environment variable to
``$HOME/.mpd/socket``. If you don't do this, you'll find many::
15:37:10|ERROR[Player:93] Cannot insert song file:///tmp/larigira.1002/audiogen-randomdir-8eoklcee.mp3
Traceback (most recent call last):
File "/home/user/my/ror/larigira/larigira/mpc.py", line 91, in enqueue
mpd_client.addid(uri, insert_pos)
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 629, in decorator
return wrapper(self, name, args, bound_decorator(self, returnValue))
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 254, in _execute
return retval()
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 623, in decorator
return function(self, *args, **kwargs)
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 384, in _fetch_item
pairs = list(self._read_pairs())
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 311, in _read_pairs
pair = self._read_pair(separator)
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 302, in _read_pair
line = self._read_line()
File "/home/user/.virtualenvs/larigira3/lib/python3.5/site-packages/python_mpd2-0.5.5-py3.5.egg/mpd.py", line 291, in _read_line
raise CommandError(error)
mpd.CommandError: [400] {addid} Access denied
Options
~~~~~~~~~~
Options will be presented "grouped" to make them more easily understandable. This is just for documentation
purposes, they don't need to be divided in the configuration.
Options values are assumed to be JSON formatted. For strings and numbers, this makes no difference. For
booleans, this means that the only valid values are ``true`` and ``false``. For lists and objects, read a JSON
reference or learn from examples.
To set an option, you must set an environment variable with the name ``LARIGIRA_OPTIONNAME``.
General
^^^^^^^^^^^^^
MPD_HOST
This option let you set the way to connect to your MPD server. Please remind that for complete larigira
operatoin you should set the path to a UNIX domain socket, not ``localhost``
MPD_PORT
If you are not using a socket, but a TCP address (which is *not* suggested), this is how you can specify the
port.
DEBUG
you can set it to ``true`` or ``false``. Defaults to ``false``.
TMPDIR
The base for larigira tmpdir. Please note that larigira will create its own directory inside this
temporary directory. This defaults to the system-wide ``$TMPDIR``, or to ``/tmp/`` if not ``TMPDIR`` is
not set. Choose it wisely, keeping in mind that in this directory a lot of cache files will be stored, and
could therefore require hundreds of MB.
Events
^^^^^^^^^
CONTINOUS_AUDIOSPEC
when the playlist is too short, larigira picks something new. How? this is controlled by this variable.
This variable should be set to the JSON representation of an audiospec describing how to generate new
audios. The default is ``{"kind": "mpd", "howmany": 1}``. You could, for example, change it to
``{ "kind": "randomdir", "paths": ["/var/music"], "howmany": 10}``
EVENT_FILTERS
See :doc:`eventfilters`
LOG_CONFIG
Path to an INI-formatted file to configure logging. See `python logging documentation
<https://docs.python.org/2/library/logging.config.html#logging-config-dictschema>`_
Internals
^^^^^^^^^^^^^^
These are options you probably don't want to change, unless you want to debug
CACHING_TIME
larigira needs an estimate on how much time an audiogenerator will need. This option sets this. The
default is 10 (seconds). If you set it too low, the events will be scheduled with some delay
CHECK_SECS
The interval (in seconds) that will trigger a check for the playlist length. Set it too low, and you'll be
consuming resource with no usage. Set it too high and you might miss some moment of playlist shortage.
The default is 20
EVENT_TICK_SECS
The interval (in seconds) that will trigger a check on the events to see if there's something to schedule.
This also determines how much time in advance you can add/delete/change an event for the change to be
effective.
SCRIPTS_PATH
This options controls the path where scripts will be looked for. This is a single path, not a list. The
default is ``$XDG_CONFIG_DIR/larigira/scripts/`` which might boil down to
``$HOME/.config/larigira/scripts/``
DB_URI
The path to the events database. The default is ``$XDG_CONFIG_DIR/larigira/db.json``
MPD_WAIT_START
When larigira starts, it will try to connect to MPD. If MPD doesn't look ready, larigira will wait until
it is. This makes larigira depend on MPD. However, this also makes it easier to run larigira at boot
without complex dependency on MPD to be fully started and listening. You can disable this behavior setting
this to ``false``
MPD_WAIT_START_RETRYSECS
The behavior described for the previous option requires polling. This variable lets you customize the
polling frequency, expressed in seconds. The default is ``5``.
Web interface
^^^^^^^^^^^^^^^^
FILE_PATH_SUGGESTION
A list of paths. Those paths will be scanned for suggestions in audiogenerator forms.
UI_CALENDAR_FREQUENCY_THRESHOLD
The "calendar" view in the UI will omit events that occur too frequently, to avoid noise. This variable is
the threshold, in seconds. Defaults to 4 hours.
BOOTSTRAP_SERVE_LOCAL
larigira can serve every js and css by itself. However, you might like to make the user download standard
libraries from CDNs. In that case, set this variable to ``false``.
Localization
++++++++++++++
Localization support in larigira is basic to say the least. However, something can be done.
Dates (not consistently! sigh) are formatted according to locale.
LARIGIRA_BABEL_DEFAULT_LOCALE
The short language code you want to use when the user doesn't specify any. Values are in the form
``it``, ``en``, ``en-US``...
LARIGIRA_UI_CALENDAR_DATE_FMT
The format to show in ``/db/calendar`` page. The format is specified `here <http://babel.pocoo.org/en/latest/dates.html>`_. Default is ``medium``.
As an example, ``eee dd LLL`` will show ``Sun 10 Mar`` for english, and ``dom 10 mar`` for italian.