384 lines
10 KiB
Python
384 lines
10 KiB
Python
# Copyright (c) 2013 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Defines interface for DB access.
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Functions in this module are imported into the sahara.db namespace. Call these
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functions from sahara.db namespace, not the sahara.db.api namespace.
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All functions in this module return objects that implement a dictionary-like
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interface.
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**Related Flags**
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:db_backend: string to lookup in the list of LazyPluggable backends.
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`sqlalchemy` is the only supported backend right now.
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:sql_connection: string specifying the sqlalchemy connection to use, like:
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`sqlite:///var/lib/sahara/sahara.sqlite`.
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"""
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from oslo.config import cfg
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from sahara.openstack.common.db import api as db_api
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from sahara.openstack.common import log as logging
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CONF = cfg.CONF
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CONF.import_opt('backend', 'sahara.openstack.common.db.options',
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group='database')
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_BACKEND_MAPPING = {
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'sqlalchemy': 'sahara.db.sqlalchemy.api',
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}
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IMPL = db_api.DBAPI(CONF.database.backend, backend_mapping=_BACKEND_MAPPING)
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LOG = logging.getLogger(__name__)
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def setup_db():
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"""Set up database, create tables, etc.
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Return True on success, False otherwise
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"""
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return IMPL.setup_db()
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def drop_db():
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"""Drop database.
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Return True on success, False otherwise
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"""
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return IMPL.drop_db()
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## Helpers for building constraints / equality checks
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def constraint(**conditions):
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"""Return a constraint object suitable for use with some updates."""
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return IMPL.constraint(**conditions)
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def equal_any(*values):
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"""Return an equality condition object suitable for use in a constraint.
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Equal_any conditions require that a model object's attribute equal any
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one of the given values.
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"""
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return IMPL.equal_any(*values)
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def not_equal(*values):
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"""Return an inequality condition object suitable for use in a constraint.
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Not_equal conditions require that a model object's attribute differs from
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all of the given values.
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"""
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return IMPL.not_equal(*values)
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def to_dict(func):
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def decorator(*args, **kwargs):
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res = func(*args, **kwargs)
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if isinstance(res, list):
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return [item.to_dict() for item in res]
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if res:
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return res.to_dict()
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else:
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return None
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return decorator
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## Cluster ops
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@to_dict
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def cluster_get(context, cluster):
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"""Return the cluster or None if it does not exist."""
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return IMPL.cluster_get(context, cluster)
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@to_dict
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def cluster_get_all(context, **kwargs):
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"""Get all clusters filtered by **kwargs e.g.
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cluster_get_all(plugin_name='vanilla', hadoop_version='1.1')
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"""
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return IMPL.cluster_get_all(context, **kwargs)
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@to_dict
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def cluster_create(context, values):
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"""Create a cluster from the values dictionary."""
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return IMPL.cluster_create(context, values)
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@to_dict
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def cluster_update(context, cluster, values):
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"""Set the given properties on cluster and update it."""
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return IMPL.cluster_update(context, cluster, values)
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def cluster_destroy(context, cluster):
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"""Destroy the cluster or raise if it does not exist."""
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IMPL.cluster_destroy(context, cluster)
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## Node Group ops
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def node_group_add(context, cluster, values):
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"""Create a Node Group from the values dictionary."""
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return IMPL.node_group_add(context, cluster, values)
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def node_group_update(context, node_group, values):
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"""Set the given properties on node_group and update it."""
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IMPL.node_group_update(context, node_group, values)
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def node_group_remove(context, node_group):
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"""Destroy the node_group or raise if it does not exist."""
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IMPL.node_group_remove(context, node_group)
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## Instance ops
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def instance_add(context, node_group, values):
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"""Create an Instance from the values dictionary."""
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return IMPL.instance_add(context, node_group, values)
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def instance_update(context, instance, values):
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"""Set the given properties on Instance and update it."""
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IMPL.instance_update(context, instance, values)
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def instance_remove(context, instance):
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"""Destroy the Instance or raise if it does not exist."""
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IMPL.instance_remove(context, instance)
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## Volumes ops
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def append_volume(context, instance, volume_id):
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"""Append volume_id to instance."""
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IMPL.append_volume(context, instance, volume_id)
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def remove_volume(context, instance, volume_id):
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"""Remove volume_id in instance."""
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IMPL.remove_volume(context, instance, volume_id)
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## Cluster Template ops
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@to_dict
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def cluster_template_get(context, cluster_template):
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"""Return the cluster_template or None if it does not exist."""
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return IMPL.cluster_template_get(context, cluster_template)
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@to_dict
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def cluster_template_get_all(context):
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"""Get all cluster_templates."""
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return IMPL.cluster_template_get_all(context)
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@to_dict
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def cluster_template_create(context, values):
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"""Create a cluster_template from the values dictionary."""
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return IMPL.cluster_template_create(context, values)
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def cluster_template_destroy(context, cluster_template):
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"""Destroy the cluster_template or raise if it does not exist."""
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IMPL.cluster_template_destroy(context, cluster_template)
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## Node Group Template ops
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@to_dict
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def node_group_template_get(context, node_group_template):
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"""Return the Node Group Template or None if it does not exist."""
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return IMPL.node_group_template_get(context, node_group_template)
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@to_dict
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def node_group_template_get_all(context):
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"""Get all Node Group Templates."""
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return IMPL.node_group_template_get_all(context)
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@to_dict
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def node_group_template_create(context, values):
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"""Create a Node Group Template from the values dictionary."""
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return IMPL.node_group_template_create(context, values)
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def node_group_template_destroy(context, node_group_template):
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"""Destroy the Node Group Template or raise if it does not exist."""
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IMPL.node_group_template_destroy(context, node_group_template)
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## Data Source ops
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@to_dict
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def data_source_get(context, data_source):
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"""Return the Data Source or None if it does not exist."""
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return IMPL.data_source_get(context, data_source)
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@to_dict
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def data_source_get_all(context):
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"""Get all Data Sources."""
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return IMPL.data_source_get_all(context)
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@to_dict
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def data_source_create(context, values):
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"""Create a Data Source from the values dictionary."""
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return IMPL.data_source_create(context, values)
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def data_source_destroy(context, data_source):
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"""Destroy the Data Source or raise if it does not exist."""
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IMPL.data_source_destroy(context, data_source)
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## JobExecutions ops
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@to_dict
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def job_execution_get(context, job_execution):
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"""Return the JobExecution or None if it does not exist."""
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return IMPL.job_execution_get(context, job_execution)
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@to_dict
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def job_execution_get_all(context, **kwargs):
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"""Get all JobExecutions filtered by **kwargs e.g.
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job_execution_get_all(cluster_id=12, input_id=123)
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"""
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return IMPL.job_execution_get_all(context, **kwargs)
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def job_execution_count(context, **kwargs):
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"""Count number of JobExecutions filtered by **kwargs e.g.
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job_execution_count(cluster_id=12, input_id=123)
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"""
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return IMPL.job_execution_count(context, **kwargs)
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@to_dict
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def job_execution_create(context, values):
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"""Create a JobExecution from the values dictionary."""
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return IMPL.job_execution_create(context, values)
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@to_dict
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def job_execution_update(context, job_execution, values):
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"""Create a JobExecution from the values dictionary."""
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return IMPL.job_execution_update(context, job_execution, values)
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def job_execution_destroy(context, job_execution):
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"""Destroy the JobExecution or raise if it does not exist."""
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IMPL.job_execution_destroy(context, job_execution)
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## Job ops
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@to_dict
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def job_get(context, job):
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"""Return the Job or None if it does not exist."""
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return IMPL.job_get(context, job)
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@to_dict
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def job_get_all(context):
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"""Get all Jobs."""
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return IMPL.job_get_all(context)
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@to_dict
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def job_create(context, values):
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"""Create a Job from the values dictionary."""
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return IMPL.job_create(context, values)
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def job_update(context, job, values):
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"""Update a Job from the values dictionary."""
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return IMPL.job_update(context, job, values)
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def job_destroy(context, job):
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"""Destroy the Job or raise if it does not exist."""
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IMPL.job_destroy(context, job)
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@to_dict
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def job_binary_get_all(context):
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"""Get all JobBinarys."""
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return IMPL.job_binary_get_all(context)
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@to_dict
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def job_binary_get(context, job_binary):
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"""Return the JobBinary or None if it does not exist."""
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return IMPL.job_binary_get(context, job_binary)
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@to_dict
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def job_binary_create(context, values):
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"""Create a JobBinary from the values dictionary."""
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return IMPL.job_binary_create(context, values)
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def job_binary_destroy(context, job_binary):
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"""Destroy the JobBinary or raise if it does not exist."""
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IMPL.job_binary_destroy(context, job_binary)
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@to_dict
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def job_binary_internal_get_all(context):
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"""Get all JobBinaryInternals."""
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return IMPL.job_binary_internal_get_all(context)
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@to_dict
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def job_binary_internal_get(context, job_binary_internal):
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"""Return the JobBinaryInternal or None if it does not exist."""
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return IMPL.job_binary_internal_get(context, job_binary_internal)
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@to_dict
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def job_binary_internal_create(context, values):
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"""Create a JobBinaryInternal from the values dictionary."""
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return IMPL.job_binary_internal_create(context, values)
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def job_binary_internal_destroy(context, job_binary_internal):
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"""Destroy the JobBinaryInternal or raise if it does not exist."""
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IMPL.job_binary_internal_destroy(context, job_binary_internal)
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def job_binary_internal_get_raw_data(context, job_binary_internal_id):
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"""Return the binary data field from the specified JobBinaryInternal."""
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return IMPL.job_binary_internal_get_raw_data(context,
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job_binary_internal_id)
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