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+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.
+
+"""Adapter related object holder."""
+import logging
+
+from compass.db.api import adapter as adapter_api
+from compass.db.api import database
+from compass.db.api import permission
+from compass.db.api import user as user_api
+from compass.db.api import utils
+from compass.db import exception
+
+
+SUPPORTED_FIELDS = [
+ 'name',
+]
+RESP_FIELDS = [
+ 'id', 'name', 'roles', 'flavors',
+ 'os_installer', 'package_installer',
+ 'supported_oses', 'display_name', 'health_check_cmd'
+]
+RESP_OS_FIELDS = [
+ 'id', 'name', 'os_id'
+]
+RESP_ROLES_FIELDS = [
+ 'id', 'name', 'display_name', 'description', 'optional'
+]
+RESP_FLAVORS_FIELDS = [
+ 'id', 'adapter_id', 'adapter_name', 'name', 'display_name',
+ 'template', 'roles'
+]
+
+
+ADAPTER_MAPPING = None
+FLAVOR_MAPPING = None
+
+
+def load_adapters(force_reload=False):
+ global ADAPTER_MAPPING
+ if force_reload or ADAPTER_MAPPING is None:
+ logging.info('load adapters into memory')
+ ADAPTER_MAPPING = adapter_api.get_adapters_internal(
+ force_reload=force_reload
+ )
+
+
+def load_flavors(force_reload=False):
+ global FLAVOR_MAPPING
+ if force_reload or FLAVOR_MAPPING is None:
+ logging.info('load flavors into memory')
+ FLAVOR_MAPPING = {}
+ adapters_flavors = adapter_api.get_flavors_internal(
+ force_reload=force_reload
+ )
+ for adapter_name, adapter_flavors in adapters_flavors.items():
+ for flavor_name, flavor in adapter_flavors.items():
+ FLAVOR_MAPPING['%s:%s' % (adapter_name, flavor_name)] = flavor
+
+
+def _filter_adapters(adapter_config, filter_name, filter_value):
+ if filter_name not in adapter_config:
+ return False
+ if isinstance(filter_value, list):
+ return bool(
+ adapter_config[filter_name] in filter_value
+ )
+ elif isinstance(filter_value, dict):
+ return all([
+ _filter_adapters(
+ adapter_config[filter_name],
+ sub_filter_key, sub_filter_value
+ )
+ for sub_filter_key, sub_filter_value in filter_value.items()
+ ])
+ else:
+ return adapter_config[filter_name] == filter_value
+
+
+@utils.supported_filters(optional_support_keys=SUPPORTED_FIELDS)
+@database.run_in_session()
+@user_api.check_user_permission(
+ permission.PERMISSION_LIST_ADAPTERS
+)
+@utils.output_filters(name=utils.general_filter_callback)
+@utils.wrap_to_dict(
+ RESP_FIELDS,
+ supported_oses=RESP_OS_FIELDS,
+ roles=RESP_ROLES_FIELDS,
+ flavors=RESP_FLAVORS_FIELDS
+)
+def list_adapters(user=None, session=None, **filters):
+ """list adapters."""
+ load_adapters()
+ return ADAPTER_MAPPING.values()
+
+
+@utils.supported_filters([])
+@database.run_in_session()
+@user_api.check_user_permission(
+ permission.PERMISSION_LIST_ADAPTERS
+)
+@utils.wrap_to_dict(
+ RESP_FIELDS,
+ supported_oses=RESP_OS_FIELDS,
+ roles=RESP_ROLES_FIELDS,
+ flavors=RESP_FLAVORS_FIELDS
+)
+def get_adapter(adapter_id, user=None, session=None, **kwargs):
+ """get adapter."""
+ load_adapters()
+ if adapter_id not in ADAPTER_MAPPING:
+ raise exception.RecordNotExists(
+ 'adpater %s does not exist' % adapter_id
+ )
+ return ADAPTER_MAPPING[adapter_id]
+
+
+@utils.supported_filters([])
+@database.run_in_session()
+@user_api.check_user_permission(
+ permission.PERMISSION_LIST_METADATAS
+)
+@utils.wrap_to_dict(RESP_FLAVORS_FIELDS)
+def list_flavors(user=None, session=None, **filters):
+ """List flavors."""
+ load_flavors()
+ return FLAVOR_MAPPING.values()
+
+
+@utils.supported_filters([])
+@database.run_in_session()
+@user_api.check_user_permission(
+ permission.PERMISSION_LIST_METADATAS
+)
+@utils.wrap_to_dict(RESP_FLAVORS_FIELDS)
+def get_flavor(flavor_id, user=None, session=None, **kwargs):
+ """Get flavor."""
+ load_flavors()
+ if flavor_id not in FLAVOR_MAPPING:
+ raise exception.RecordNotExists(
+ 'flavor %s does not exist' % flavor_id
+ )
+ return FLAVOR_MAPPING[flavor_id]