210 lines
8.1 KiB
Python
210 lines
8.1 KiB
Python
# Copyright 2015 IBM Corp.
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# All Rights Reserved.
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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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import os
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from oslo_log import log as logging
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from oslo_service import periodic_task
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from trove.common import cfg
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from trove.common import exception
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from trove.common.i18n import _
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from trove.guestagent.datastore.experimental.couchdb import service
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from trove.guestagent import dbaas
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from trove.guestagent import volume
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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MANAGER = CONF.datastore_manager
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class Manager(periodic_task.PeriodicTasks):
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"""
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This is CouchDB Manager class. It is dynamically loaded
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based off of the datastore of the Trove instance.
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"""
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def __init__(self):
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self.appStatus = service.CouchDBAppStatus()
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self.app = service.CouchDBApp(self.appStatus)
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super(Manager, self).__init__(CONF)
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def rpc_ping(self, context):
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LOG.debug("Responding to RPC ping.")
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return True
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def prepare(self, context, packages, databases, memory_mb, users,
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device_path=None, mount_point=None, backup_info=None,
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config_contents=None, root_password=None, overrides=None,
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cluster_config=None, snapshot=None):
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"""
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This is called when the Trove instance first comes online.
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It is the first RPC message passed from the task manager.
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prepare handles all the base configuration of the CouchDB instance.
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"""
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self.appStatus.begin_install()
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self.app.install_if_needed(packages)
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if device_path:
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self.app.stop_db()
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device = volume.VolumeDevice(device_path)
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# unmount if device is already mounted
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device.unmount_device(device_path)
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device.format()
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if os.path.exists(mount_point):
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device.migrate_data(mount_point)
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device.mount(mount_point)
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LOG.debug('Mounted the volume (%s).' % device_path)
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self.app.start_db()
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self.app.change_permissions()
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self.app.make_host_reachable()
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self.app.complete_install_or_restart()
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LOG.info(_('Completed setup of CouchDB database instance.'))
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@periodic_task.periodic_task
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def update_status(self, context):
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"""Update the status of the CouchDB service."""
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self.appStatus.update()
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def get_filesystem_stats(self, context, fs_path):
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"""Gets the filesystem stats for the path given."""
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LOG.debug("In get_filesystem_stats: fs_path= %s" % fs_path)
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mount_point = CONF.get(
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'mysql' if not MANAGER else MANAGER).mount_point
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return dbaas.get_filesystem_volume_stats(mount_point)
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def stop_db(self, context, do_not_start_on_reboot=False):
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"""
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Stop this CouchDB instance.
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This method is called when the guest agent
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gets a stop message from the taskmanager.
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"""
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LOG.debug("Stopping the CouchDB instance.")
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self.app.stop_db(do_not_start_on_reboot=do_not_start_on_reboot)
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def restart(self, context):
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"""
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Restart this CouchDB instance.
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This method is called when the guest agent
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gets a restart message from the taskmanager.
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"""
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LOG.debug("Restarting the CouchDB instance.")
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self.app.restart()
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def reset_configuration(self, context, configuration):
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"""
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Currently this method does nothing. This method needs to be
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implemented to enable rollback of flavor-resize on guestagent side.
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"""
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LOG.debug("Resetting CouchDB configuration.")
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pass
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def change_passwords(self, context, users):
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LOG.debug("Changing password.")
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raise exception.DatastoreOperationNotSupported(
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operation='change_passwords', datastore=MANAGER)
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def update_attributes(self, context, username, hostname, user_attrs):
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LOG.debug("Updating database attributes.")
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raise exception.DatastoreOperationNotSupported(
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operation='update_attributes', datastore=MANAGER)
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def create_database(self, context, databases):
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LOG.debug("Creating database.")
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raise exception.DatastoreOperationNotSupported(
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operation='create_database', datastore=MANAGER)
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def create_user(self, context, users):
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LOG.debug("Creating user.")
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raise exception.DatastoreOperationNotSupported(
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operation='create_user', datastore=MANAGER)
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def delete_database(self, context, database):
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LOG.debug("Deleting database.")
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raise exception.DatastoreOperationNotSupported(
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operation='delete_database', datastore=MANAGER)
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def delete_user(self, context, user):
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LOG.debug("Deleting user.")
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raise exception.DatastoreOperationNotSupported(
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operation='delete_user', datastore=MANAGER)
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def get_user(self, context, username, hostname):
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LOG.debug("Getting user.")
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raise exception.DatastoreOperationNotSupported(
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operation='get_user', datastore=MANAGER)
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def grant_access(self, context, username, hostname, databases):
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LOG.debug("Granting acccess.")
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raise exception.DatastoreOperationNotSupported(
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operation='grant_access', datastore=MANAGER)
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def revoke_access(self, context, username, hostname, database):
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LOG.debug("Revoking access.")
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raise exception.DatastoreOperationNotSupported(
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operation='revoke_access', datastore=MANAGER)
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def list_access(self, context, username, hostname):
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LOG.debug("Listing access.")
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raise exception.DatastoreOperationNotSupported(
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operation='list_access', datastore=MANAGER)
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def list_databases(self, context, limit=None, marker=None,
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include_marker=False):
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LOG.debug("Listing databases.")
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raise exception.DatastoreOperationNotSupported(
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operation='list_databases', datastore=MANAGER)
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def list_users(self, context, limit=None, marker=None,
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include_marker=False):
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LOG.debug("Listing users.")
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raise exception.DatastoreOperationNotSupported(
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operation='list_users', datastore=MANAGER)
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def enable_root(self, context):
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LOG.debug("Enabling root.")
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raise exception.DatastoreOperationNotSupported(
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operation='enable_root', datastore=MANAGER)
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def is_root_enabled(self, context):
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LOG.debug("Checking if root is enabled.")
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raise exception.DatastoreOperationNotSupported(
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operation='is_root_enabled', datastore=MANAGER)
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def create_backup(self, context, backup_info):
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LOG.debug("Creating backup.")
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raise exception.DatastoreOperationNotSupported(
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operation='create_backup', datastore=MANAGER)
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def start_db_with_conf_changes(self, context, config_contents):
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LOG.debug("Starting CouchDB with configuration changes.")
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self.app.start_db_with_conf_changes(config_contents)
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def mount_volume(self, context, device_path=None, mount_point=None):
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device = volume.VolumeDevice(device_path)
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device.mount(mount_point, write_to_fstab=False)
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LOG.debug("Mounted the device %s at the mount_point %s." %
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(device_path, mount_point))
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def unmount_volume(self, context, device_path=None, mount_point=None):
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device = volume.VolumeDevice(device_path)
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device.unmount(mount_point)
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LOG.debug("Unmounted the device %s from the mount point %s." %
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(device_path, mount_point))
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def resize_fs(self, context, device_path=None, mount_point=None):
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device = volume.VolumeDevice(device_path)
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device.resize_fs(mount_point)
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LOG.debug("Resized the filesystem at %s." % mount_point)
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