config.py 4.09 KB
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# Copyright 2018 Markus Scheidgen
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an"AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

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"""
This module is used to store all configuration values. It makes use of
*namedtuples* to create key sensitive configuration objects.
"""

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import os
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import logging
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from collections import namedtuple

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FilesConfig = namedtuple(
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    'FilesConfig', ['uploads_bucket', 'raw_bucket', 'archive_bucket', 'compress_archive'])
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""" API independent configuration for the object storage. """

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CeleryConfig = namedtuple('Celery', ['broker_url'])
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""" Used to configure the RabbitMQ for celery. """
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FSConfig = namedtuple('FSConfig', ['tmp', 'objects'])
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""" Used to configure file stystem access. """

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RepositoryDBConfig = namedtuple('RepositoryDBConfig', ['host', 'port', 'dbname', 'user', 'password'])
""" Used to configure access to NOMAD-coe repository db. """

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ElasticConfig = namedtuple('ElasticConfig', ['host', 'calc_index'])
""" Used to configure elastic search. """

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MongoConfig = namedtuple('MongoConfig', ['host', 'port', 'users_db'])
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""" Used to configure mongo db. """

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LogstashConfig = namedtuple('LogstashConfig', ['enabled', 'host', 'tcp_port', 'level'])
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""" Used to configure and enable/disable the ELK based centralized logging. """
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NomadServicesConfig = namedtuple('NomadServicesConfig', ['api_host', 'api_port', 'api_base_path', 'api_secret'])
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""" Used to configure nomad services: worker, handler, api """

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files = FilesConfig(
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    uploads_bucket='uploads',
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    raw_bucket=os.environ.get('NOMAD_FILES_RAW_BUCKET', 'raw'),
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    archive_bucket='archive',
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    compress_archive=True
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)
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rabbit_host = os.environ.get('NOMAD_RABBITMQ_HOST', 'localhost')
rabbit_port = os.environ.get('NOMAD_RABBITMQ_PORT', None)
rabbit_user = 'rabbitmq'
rabbit_password = 'rabbitmq'
rabbit_url = 'pyamqp://%s:%s@%s//' % (rabbit_user, rabbit_password, rabbit_host)

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def get_loglevel_from_env(key, default_level=logging.INFO):
    plain_value = os.environ.get(key, None)
    if plain_value is None:
        return default_level
    else:
        try:
            return int(plain_value)
        except ValueError:
            return getattr(logging, plain_value, default_level)


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celery = CeleryConfig(
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    broker_url=rabbit_url
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)
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fs = FSConfig(
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    tmp=os.environ.get('NOMAD_FILES_TMP_DIR', '.volumes/fs/tmp'),
    objects=os.environ.get('NOMAD_FILES_OBJECTS_DIR', '.volumes/fs/objects')
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)
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elastic = ElasticConfig(
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    host=os.environ.get('NOMAD_ELASTIC_HOST', 'localhost'),
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    calc_index='calcs'
)
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repository_db = RepositoryDBConfig(
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    host=os.environ.get('NOMAD_COE_REPO_DB_HOST', 'localhost'),
    port=int(os.environ.get('NOMAD_COE_REPO_DB_PORT', 5432)),
    dbname=os.environ.get('NOMAD_COE_REPO_DB_NAME', 'nomad'),
    user=os.environ.get('NOMAD_COE_REPO_DB_USER', 'postgres'),
    password=os.environ.get('NOMAD_COE_REPO_PASSWORD', 'nomad')
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)
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mongo = MongoConfig(
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    host=os.environ.get('NOMAD_MONGO_HOST', 'localhost'),
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    port=int(os.environ.get('NOMAD_MONGO_PORT', 27017)),
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    users_db='users'
)
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logstash = LogstashConfig(
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    enabled=True,
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    host=os.environ.get('NOMAD_LOGSTASH_HOST', 'localhost'),
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    tcp_port=int(os.environ.get('NOMAD_LOGSTASH_TCPPORT', '5000')),
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    level=get_loglevel_from_env('NOMAD_LOGSTASH_LEVEL', default_level=logging.DEBUG)
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)
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services = NomadServicesConfig(
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    api_host=os.environ.get('NOMAD_API_HOST', 'localhost'),
    api_port=int(os.environ.get('NOMAD_API_PORT', 8000)),
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    api_base_path=os.environ.get('NOMAD_API_BASE_PATH', '/nomad/api'),
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    api_secret=os.environ.get('NOMAD_API_SECRET', 'defaultApiSecret')
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)
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console_log_level = get_loglevel_from_env('NOMAD_CONSOLE_LOGLEVEL', default_level=logging.INFO)
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service = os.environ.get('NOMAD_SERVICE', 'unknown nomad service')