:banner: banners/flectra_command_line_interface.jpg

.. _reference/cmdline:

===================================
Command-line interface: flectra-bin
===================================

.. _reference/cmdline/server:

Running the server
==================

.. program:: flectra-bin

.. option:: -d <database>, --database <database>

    database used when installing or updating modules.

.. option:: -i <modules>, --init <modules>

    comma-separated list of modules to install before running the server
    (requires :option:`-d`).

.. option:: -u <modules>, --update <modules>

    comma-separated list of modules to update before running the server
    (requires :option:`-d`).

.. option:: --addons-path <directories>

    comma-separated list of directories in which modules are stored. These
    directories are scanned for modules (nb: when and why?)

.. option:: --workers <count>

    if ``count`` is not 0 (the default), enables multiprocessing and sets up
    the specified number of HTTP workers (sub-processes processing HTTP
    and RPC requests).

    .. note:: multiprocessing mode is only available on Unix-based systems

    A number of options allow limiting and recycling workers:

    .. option:: --limit-request <limit>

        Number of requests a worker will process before being recycled and
        restarted.

        Defaults to 8196.

    .. option:: --limit-memory-soft <limit>

        Maximum allowed virtual memory per worker. If the limit is exceeded,
        the worker is killed and recycled at the end of the current request.

        Defaults to 640MB.

    .. option:: --limit-memory-hard <limit>

        Hard limit on virtual memory, any worker exceeding the limit will be
        immediately killed without waiting for the end of the current request
        processing.

        Defaults to 768MB.

    .. option:: --limit-time-cpu <limit>

        Prevents the worker from using more than <limit> CPU seconds for each
        request. If the limit is exceeded, the worker is killed.

        Defaults to 60.

    .. option:: --limit-time-real <limit>

        Prevents the worker from taking longer than <limit> seconds to process
        a request. If the limit is exceeded, the worker is killed.

        Differs from :option:`--limit-time-cpu` in that this is a "wall time"
        limit including e.g. SQL queries.

        Defaults to 120.

.. option:: --max-cron-threads <count>

    number of workers dedicated to cron jobs. Defaults to 2. The workers are
    threads in multi-threading mode and processes in multi-processing mode.

    For multi-processing mode, this is in addition to the HTTP worker
    processes.

.. option:: -c <config>, --config <config>

    provide an alternate configuration file

.. option:: -s, --save

    saves the server configuration to the current configuration file
    (:file:`{$HOME}/.flectrarc` by default, and can be overridden using
    :option:`-c`)

.. option:: --proxy-mode

    enables the use of ``X-Forwarded-*`` headers through `Werkzeug's proxy
    support`_.

    .. warning:: proxy mode *must not* be enabled outside of a reverse proxy
                 scenario

.. option:: --test-enable

    runs tests after installing modules

.. option:: --dev <feature,feature,...,feature>

    * ``all``: all the features below are activated

    * ``xml``: read template qweb from xml file directly instead of database.
      Once a template has been modified in database, it will be not be read from
      the xml file until the next update/init.

    * ``reload``: restart server when python file are updated (may not be detected
      depending on the text editor used)

    * ``qweb``: break in the evaluation of qweb template when a node contains ``t-debug='debugger'``

    * ``(i)p(u)db``: start the chosen python debugger in the code when an
      unexpected error is raised before logging and returning the error.

.. _reference/cmdline/server/database:

database
--------

.. option:: -r <user>, --db_user <user>

    database username, used to connect to PostgreSQL.

.. option:: -w <password>, --db_password <password>

    database password, if using `password authentication`_.

.. option:: --db_host <hostname>

    host for the database server

    * ``localhost`` on Windows
    * UNIX socket otherwise

.. option:: --db_port <port>

    port the database listens on, defaults to 5432

.. option:: --db-filter <filter>

    hides databases that do not match ``<filter>``. The filter is a
    `regular expression`_, with the additions that:

    - ``%h`` is replaced by the whole hostname the request is made on.
    - ``%d`` is replaced by the subdomain the request is made on, with the
      exception of ``www`` (so domain ``flectrahq.com`` and ``www.flectrahq.com`` both
      match the database ``flectra``).

      These operations are case sensitive. Add option ``(?i)`` to match all
      databases (so domain ``flectrahq.com`` using ``(?i)%d`` matches the database
      ``Flectra``).

.. option:: --db-template <template>

    when creating new databases from the database-management screens, use the
    specified `template database`_. Defaults to ``template1``.

.. option:: --no-database-list

    Suppresses the ability to list databases available on the system

built-in HTTP
-------------

.. option:: --no-http

    do not start the HTTP or long-polling workers (may still start cron
    workers)

    .. warning:: has no effect if :option:`--test-enable` is set, as tests
                 require an accessible HTTP server

.. option:: --http-interface <interface>

    TCP/IP address on which the HTTP server listens, defaults to ``0.0.0.0``
    (all addresses)

.. option:: --http-port <port>

    Port on which the HTTP server listens, defaults to 7073.

.. option:: --longpolling-port <port>

    TCP port for long-polling connections in multiprocessing or gevent mode,
    defaults to 8072. Not used in default (threaded) mode.

logging
-------

By default, Flectra displays all logging of level_ ``info`` except for workflow
logging (``warning`` only), and log output is sent to ``stdout``. Various
options are available to redirect logging to other destinations and to
customize the amount of logging output

.. option:: --logfile <file>

    sends logging output to the specified file instead of stdout. On Unix, the
    file `can be managed by external log rotation programs
    <https://docs.python.org/3/library/logging.handlers.html#watchedfilehandler>`_
    and will automatically be reopened when replaced

.. option:: --logrotate

    enables `log rotation <https://docs.python.org/3/library/logging.handlers.html#timedrotatingfilehandler>`_
    daily, keeping 30 backups. Log rotation frequency and number of backups is
    not configurable.

.. option:: --syslog

    logs to the system's event logger: `syslog on unices <https://docs.python.org/3/library/logging.handlers.html#sysloghandler>`_
    and `the Event Log on Windows <https://docs.python.org/3/library/logging.handlers.html#nteventloghandler>`_.

    Neither is configurable

.. option:: --log-db <dbname>

    logs to the ``ir.logging`` model (``ir_logging`` table) of the specified
    database. The database can be the name of a database in the "current"
    PostgreSQL, or `a PostgreSQL URI`_ for e.g. log aggregation

.. option:: --log-handler <handler-spec>

    :samp:`{LOGGER}:{LEVEL}`, enables ``LOGGER`` at the provided ``LEVEL``
    e.g. ``flectra.models:DEBUG`` will enable all logging messages at or above
    ``DEBUG`` level in the models.

    * The colon ``:`` is mandatory
    * The logger can be omitted to configure the root (default) handler
    * If the level is omitted, the logger is set to ``INFO``

    The option can be repeated to configure multiple loggers e.g.

    .. code-block:: console

        $ flectra-bin --log-handler :DEBUG --log-handler werkzeug:CRITICAL --log-handler flectra.fields:WARNING

.. option:: --log-request

    enable DEBUG logging for RPC requests, equivalent to
    ``--log-handler=flectra.http.rpc.request:DEBUG``

.. option:: --log-response

    enable DEBUG logging for RPC responses, equivalent to
    ``--log-handler=flectra.http.rpc.response:DEBUG``

.. option:: --log-web

    enables DEBUG logging of HTTP requests and responses, equivalent to
    ``--log-handler=flectra.http:DEBUG``

.. option:: --log-sql

    enables DEBUG logging of SQL querying, equivalent to
    ``--log-handler=flectra.sql_db:DEBUG``

.. option:: --log-level <level>

    Shortcut to more easily set predefined levels on specific loggers. "real"
    levels (``critical``, ``error``, ``warn``, ``debug``) are set on the
    ``flectra`` and ``werkzeug`` loggers (except for ``debug`` which is only
    set on ``flectra``).

    Flectra also provides debugging pseudo-levels which apply to different sets
    of loggers:

    ``debug_sql``
        sets the SQL logger to ``debug``

        equivalent to ``--log-sql``
    ``debug_rpc``
        sets the ``flectra`` and HTTP request loggers to ``debug``

        equivalent to ``--log-level debug --log-request``
    ``debug_rpc_answer``
        sets the ``flectra`` and HTTP request and response loggers to
        ``debug``

        equivalent to ``--log-level debug --log-request --log-response``

    .. note::

        In case of conflict between :option:`--log-level` and
        :option:`--log-handler`, the latter is used

translations
------------

.. option:: --i18n-import

.. option:: --i18n-export

emails
------

.. option:: --email-from <address>

    Email address used as <FROM> when Flectra needs to send mails

.. option:: --smtp <server>

    Address of the SMTP server to connect to in order to send mails

.. option:: --smtp-port <port>

.. option:: --smtp-ssl

    If set, flectra should use SSL/STARTSSL SMTP connections

.. option:: --smtp-user <name>

    Username to connect to the SMTP server

.. option:: --smtp-password <password>

    Password to connect to the SMTP server


.. _reference/cmdline/scaffold:

Scaffolding
===========

.. program:: flectra-bin scaffold

Scaffolding is the automated creation of a skeleton structure to simplify
bootstrapping (of new modules, in the case of Flectra). While not necessary it
avoids the tedium of setting up basic structures and looking up what all
starting requirements are.

Scaffolding is available via the :command:`flectra-bin scaffold` subcommand.

.. option:: -t <template>

    a template directory, files are passed through jinja2_ then copied to
    the ``destination`` directory

.. option:: name

    the name of the module to create, may munged in various manners to
    generate programmatic names (e.g. module directory name, model names, …)

.. option:: destination

    directory in which to create the new module, defaults to the current
    directory

.. _reference/cmdline/config:

Configuration file
==================

.. program:: flectra-bin

Most of the command-line options can also be specified via a configuration
file. Most of the time, they use similar names with the prefix ``-`` removed
and other ``-`` are replaced by ``_`` e.g. :option:`--db-template` becomes
``db_template``.

Some conversions don't match the pattern:

* :option:`--db-filter` becomes ``dbfilter``
* :option:`--no-http` corresponds to the ``http_enable`` boolean
* logging presets (all options starting with ``--log-`` except for
  :option:`--log-handler` and :option:`--log-db`) just add content to
  ``log_handler``, use that directly in the configuration file
* :option:`--smtp` is stored as ``smtp_server``
* :option:`--database` is stored as ``db_name``
* :option:`--i18n-import` and :option:`--i18n-export` aren't available at all
  from configuration files

The default configuration file is :file:`{$HOME}/.flectrarc` which
can be overridden using :option:`--config <flectra-bin -c>`. Specifying
:option:`--save <flectra-bin -s>` will save the current configuration state back
to that file.

.. _jinja2: http://jinja.pocoo.org
.. _regular expression: https://docs.python.org/3/library/re.html
.. _password authentication:
    http://www.postgresql.org/docs/9.3/static/auth-methods.html#AUTH-PASSWORD
.. _template database:
    http://www.postgresql.org/docs/9.3/static/manage-ag-templatedbs.html
.. _level:
    https://docs.python.org/3/library/logging.html#logging.Logger.setLevel
.. _a PostgreSQL URI:
    http://www.postgresql.org/docs/9.2/static/libpq-connect.html#AEN38208
.. _Werkzeug's proxy support:
    http://werkzeug.pocoo.org/docs/contrib/fixers/#werkzeug.contrib.fixers.ProxyFix
.. _pyinotify: https://github.com/seb-m/pyinotify/wiki