manila/manila/policies/share_server.py
Douglas Viroel 39efc2bde8 Add share server migration
This patch adds support for migration of share servers. This
migration is performed using a two-phase approach. Administrators
are now able to request the migration of a share server within and
across backends, with the possibility of chooosing a different share
network for the destination share server.

- A new field called `task_state` was added to the share server
  model in order to help the administrator to track the share server
  migration steps. A new field called `source_share_server_id` was
  added to link destination and source share servers.

- A new periodic task was added to track migration of share servers
  and its resources.

- Two new states were added: `server_migrating` and
  `server_migrating_to` to represent that share migration is in
  progress.

- When performing the server migration, manila will not go to the
  scheduler, instead it will provide a request spec to drivers
  during migration check driver call. It'll be up to the driver
  validate if there is free space to handle the share server.

- A new API called `share-server-migration-check' was added to
  check the feasibility of a migration, before actually triggering
  the start operation.

APIImpact
DocImpact
Partially Implements: bp share-server-migration

Co-Authored-By: Andre Beltrami <debeltrami@gmail.com>
Co-Authored-By: Carlos Eduardo <ces.eduardo98@gmail.com>
Co-Authored-By: Felipe Rodrigues <felipefuty01@gmail.com>

Change-Id: Ic0751027d2c3f1ef7ab0f7836baff3070a230cfd
Signed-off-by: Douglas Viroel <viroel@gmail.com>
2020-09-10 08:52:08 -03:00

163 lines
5.3 KiB
Python

# 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.
from oslo_policy import policy
from manila.policies import base
BASE_POLICY_NAME = 'share_server:%s'
share_server_policies = [
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'index',
check_str=base.RULE_ADMIN_API,
description="Get share servers.",
operations=[
{
'method': 'GET',
'path': '/share-servers',
},
{
'method': 'GET',
'path': '/share-servers?{query}',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'show',
check_str=base.RULE_ADMIN_API,
description="Show share server.",
operations=[
{
'method': 'GET',
'path': '/share-servers/{server_id}',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'details',
check_str=base.RULE_ADMIN_API,
description="Get share server details.",
operations=[
{
'method': 'GET',
'path': '/share-servers/{server_id}/details',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'delete',
check_str=base.RULE_ADMIN_API,
description="Delete share server.",
operations=[
{
'method': 'DELETE',
'path': '/share-servers/{server_id}',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'manage_share_server',
check_str=base.RULE_ADMIN_API,
description="Manage share server.",
operations=[
{
'method': 'POST',
'path': '/share-servers/manage'
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'unmanage_share_server',
check_str=base.RULE_ADMIN_API,
description="Unmanage share server.",
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action'
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'reset_status',
check_str=base.RULE_ADMIN_API,
description="Reset the status of a share server.",
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action'
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'share_server_migration_start',
check_str=base.RULE_ADMIN_API,
description="Migrates a share server to the specified host.",
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'share_server_migration_check',
check_str=base.RULE_ADMIN_API,
description="Check if can migrates a share server to the specified "
"host.",
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'share_server_migration_complete',
check_str=base.RULE_ADMIN_API,
description="Invokes the 2nd phase of share server migration.",
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'share_server_migration_cancel',
check_str=base.RULE_ADMIN_API,
description="Attempts to cancel share server migration.",
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'share_server_migration_get_progress',
check_str=base.RULE_ADMIN_API,
description=("Retrieves the share server migration progress for a "
"given share server."),
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action',
}
]),
policy.DocumentedRuleDefault(
name=BASE_POLICY_NAME % 'share_server_reset_task_state',
check_str=base.RULE_ADMIN_API,
description=("Resets task state."),
operations=[
{
'method': 'POST',
'path': '/share-servers/{share_server_id}/action',
}
]),
]
def list_rules():
return share_server_policies