# -*- coding: utf-8 -*-

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import click

import kallithea

import kallithea.bin.kallithea_cli_base as cli_base

@cli_base.register_command(config_file_initialize_app=True)

@click.argument('celery_args', nargs=-1)

def celery_run(celery_args):

    """Start Celery worker(s) for asynchronous tasks.

    This commands starts the Celery daemon which will spawn workers to handle

    certain asynchronous tasks for Kallithea.

    Any extra arguments you pass to this command will be passed through to

    Celery. Use '--' before such extra arguments to avoid options to be parsed

    by this CLI command.

    """

    if not kallithea.CELERY_ON:

        raise Exception('Please set use_celery = true in .ini config '

                        'file before running this command')

    return cmd.run_from_argv(None, command='celery-run -c CONFIG_FILE --', argv=list(celery_args))

We read the configuration from tg.config at module import time. This module can

thus not be imported in global scope but must be imported on demand in function

scope after tg.config has been initialized.

To make sure that the config really has been initialized, we check one of the

mandatory settings.

"""

import celery

import celery.result as result

import tg

from celery.bin import worker

from celery.task import task

def celery_config(config):

    """Return Celery config object populated from relevant settings in a config dict, such as tg.config"""

    # Verify .ini file configuration has been loaded

    assert config['celery.imports'] == 'kallithea.lib.celerylib.tasks', 'Kallithea Celery configuration has not been loaded'

    class CeleryConfig(object):

        pass

    celery_config = CeleryConfig()

    PREFIXES = """ADMINS BROKER CASSANDRA CELERYBEAT CELERYD CELERYMON CELERY EMAIL SERVER""".split()

    LIST_PARAMS = """CELERY_IMPORTS ADMINS ROUTES CELERY_ACCEPT_CONTENT""".split()

    for config_key, config_value in sorted(config.items()):

        celery_key = config_key.replace('.', '_').upper()

        if celery_key.split('_', 1)[0] not in PREFIXES:

            continue

        if not isinstance(config_value, basestring):

            continue

        if celery_key in LIST_PARAMS:

            celery_value = config_value.split()

        elif config_value.isdigit():

            celery_value = int(config_value)

        elif config_value.lower() in ['true', 'false']:

            celery_value = config_value.lower() == 'true'

        else:

            celery_value = config_value

        setattr(celery_config, celery_key, celery_value)

    return celery_config