fbd598b9ab
When rolling back a stack update, we will need to swap the current and previous (backup) resources so that the former moves to the backup stack while the latter returns to the current stack. This API allows us to effect the switch using a database transaction (thus avoiding having to create a *third* stack). Change-Id: I2b7247e384e3914778179260e198e5ae5c701525
210 lines
5.4 KiB
Python
210 lines
5.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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'''
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Interface for database access.
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Usage:
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>>> from heat import db
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>>> db.event_get(context, event_id)
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# Event object received
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The underlying driver is loaded . SQLAlchemy is currently the only
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supported backend.
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'''
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from oslo.config import cfg
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from heat.db import utils
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SQL_CONNECTION = 'sqlite://'
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SQL_IDLE_TIMEOUT = 3600
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db_opts = [
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cfg.StrOpt('db_backend',
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default='sqlalchemy',
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help='The backend to use for db')]
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cfg.CONF.register_opts(db_opts)
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IMPL = utils.LazyPluggable('db_backend',
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sqlalchemy='heat.db.sqlalchemy.api')
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cfg.CONF.import_opt('sql_connection', 'heat.common.config')
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cfg.CONF.import_opt('sql_idle_timeout', 'heat.common.config')
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def configure():
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global SQL_CONNECTION
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global SQL_IDLE_TIMEOUT
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SQL_CONNECTION = cfg.CONF.sql_connection
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SQL_IDLE_TIMEOUT = cfg.CONF.sql_idle_timeout
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def get_session():
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return IMPL.get_session()
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def raw_template_get(context, template_id):
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return IMPL.raw_template_get(context, template_id)
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def raw_template_create(context, values):
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return IMPL.raw_template_create(context, values)
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def resource_data_get(resource, key):
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return IMPL.resource_data_get(resource, key)
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def resource_data_set(resource, key, value, redact=False):
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return IMPL.resource_data_set(resource, key, value, redact=redact)
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def resource_data_get_by_key(context, resource_id, key):
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return IMPL.resource_data_get_by_key(context, resource_id, key)
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def resource_data_delete(resource, key):
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"""Remove a resource_data element associated to a resource."""
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return IMPL.resource_data_delete(resource, key)
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def resource_get(context, resource_id):
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return IMPL.resource_get(context, resource_id)
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def resource_get_all(context):
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return IMPL.resource_get_all(context)
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def resource_create(context, values):
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return IMPL.resource_create(context, values)
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def resource_exchange_stacks(context, resource_id1, resource_id2):
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return IMPL.resource_exchange_stacks(context, resource_id1, resource_id2)
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def resource_get_all_by_stack(context, stack_id):
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return IMPL.resource_get_all_by_stack(context, stack_id)
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def resource_get_by_name_and_stack(context, resource_name, stack_id):
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return IMPL.resource_get_by_name_and_stack(context,
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resource_name, stack_id)
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def resource_get_by_physical_resource_id(context, physical_resource_id):
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return IMPL.resource_get_by_physical_resource_id(context,
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physical_resource_id)
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def stack_get(context, stack_id, admin=False, show_deleted=False):
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return IMPL.stack_get(context, stack_id, admin, show_deleted=show_deleted)
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def stack_get_by_name(context, stack_name, owner_id=None):
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return IMPL.stack_get_by_name(context, stack_name, owner_id=owner_id)
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def stack_get_all(context):
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return IMPL.stack_get_all(context)
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def stack_get_all_by_tenant(context):
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return IMPL.stack_get_all_by_tenant(context)
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def stack_create(context, values):
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return IMPL.stack_create(context, values)
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def stack_update(context, stack_id, values):
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return IMPL.stack_update(context, stack_id, values)
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def stack_delete(context, stack_id):
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return IMPL.stack_delete(context, stack_id)
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def user_creds_create(context):
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return IMPL.user_creds_create(context)
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def user_creds_get(context_id):
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return IMPL.user_creds_get(context_id)
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def event_get(context, event_id):
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return IMPL.event_get(context, event_id)
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def event_get_all(context):
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return IMPL.event_get_all(context)
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def event_get_all_by_tenant(context):
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return IMPL.event_get_all_by_tenant(context)
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def event_get_all_by_stack(context, stack_id):
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return IMPL.event_get_all_by_stack(context, stack_id)
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def event_create(context, values):
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return IMPL.event_create(context, values)
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def watch_rule_get(context, watch_rule_id):
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return IMPL.watch_rule_get(context, watch_rule_id)
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def watch_rule_get_by_name(context, watch_rule_name):
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return IMPL.watch_rule_get_by_name(context, watch_rule_name)
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def watch_rule_get_all(context):
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return IMPL.watch_rule_get_all(context)
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def watch_rule_get_all_by_stack(context, stack_id):
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return IMPL.watch_rule_get_all_by_stack(context, stack_id)
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def watch_rule_create(context, values):
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return IMPL.watch_rule_create(context, values)
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def watch_rule_update(context, watch_id, values):
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return IMPL.watch_rule_update(context, watch_id, values)
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def watch_rule_delete(context, watch_id):
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return IMPL.watch_rule_delete(context, watch_id)
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def watch_data_create(context, values):
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return IMPL.watch_data_create(context, values)
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def watch_data_get_all(context):
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return IMPL.watch_data_get_all(context)
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def watch_data_delete(context, watch_name):
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return IMPL.watch_data_delete(context, watch_name)
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