1 files changed, 155 insertions, 0 deletions
diff --git a/compass-tasks/db/api/adapter_holder.py b/compass-tasks/db/api/adapter_holder.py
new file mode 100644
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+++ b/compass-tasks/db/api/adapter_holder.py
@@ -0,0 +1,155 @@
+# 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]