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|
#!/usr/bin/python
# -*- coding: utf-8 -*-
DOCUMENTATION = '''
---
module: glance_manage
short_description: Initialize OpenStack Image (glance) database
description: Create the tables for the database backend used by glance
options:
action:
description:
- action to perform. Currently only dbsync is supported.
required: true
conf:
description:
- path to glance-registry config file.
required: false
default: /etc/glance/glance-registry.conf
requirements: [ glance ]
author: Lorin Hochstein
'''
EXAMPLES = '''
glance_manage: action=dbsync
'''
import glance
# this is necessary starting from havana release due to bug 885529
# https://bugs.launchpad.net/glance/+bug/885529
from glance.openstack.common import gettextutils
gettextutils.install('glance')
import glance.db.sqlalchemy.api
glance_found = True
try:
from glance.db.sqlalchemy import migration
from glance.common.exception import DatabaseMigrationError
from migrate.versioning import api as versioning_api
except ImportError:
try:
# Icehouse imports
from glance.openstack.common.db.sqlalchemy import migration
from glance.openstack.common.db import options
migration.CONF = options.CONF
from migrate.versioning import api as versioning_api
# Dummy class to make sure that the rest of the code can work whether
# we're using icehouse or not
class DatabaseMigrationError:
pass
except ImportError:
glance_found = False
import os
import subprocess
import sqlalchemy
def is_under_version_control(conf):
""" Return true if the database is under version control"""
migration.CONF(project='glance', default_config_files=[conf])
try:
migration.db_version()
except DatabaseMigrationError:
return False
# db_version() will fail with TypeError on icehouse. Icehouse uses db
# migration so we're good.
finally:
return True
def will_db_change(conf):
""" Check if the database version will change after the sync """
# Load the config file options
if not is_under_version_control(conf):
return True
migration.CONF(project='glance', default_config_files=[conf])
try:
repo_path = migration.get_migrate_repo_path()
current_version = migration.db_version()
except AttributeError:
# icehouse
repo_path = os.path.join(os.path.dirname(glance.__file__),
'db', 'sqlalchemy', 'migrate_repo')
engine = sqlalchemy.create_engine(migration.CONF.database.connection)
current_version = migration.db_version(engine, repo_path, 0)
repo_version = versioning_api.repository.Repository(repo_path).latest
return current_version != repo_version
def put_under_version_control():
""" Create the initial sqlalchemy migrate database tables. """
args = ['glance-manage', 'version_control', '0']
call = subprocess.Popen(args, shell=False,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = call.communicate()
return (call.returncode, out, err)
def do_dbsync():
""" Do a database migration """
args = ['glance-manage', 'db_sync']
call = subprocess.Popen(args, shell=False,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = call.communicate()
return (call.returncode, out, err)
def main():
module = AnsibleModule(
argument_spec=dict(
action=dict(required=True),
conf=dict(required=False,
default="/etc/glance/glance-registry.conf")
),
supports_check_mode=True
)
if not glance_found:
module.fail_json(msg="glance package could not be found")
action = module.params['action']
if action not in ['dbsync', 'db_sync']:
module.fail_json(msg="Only supported action is 'dbsync'")
conf = module.params['conf']
changed = will_db_change(conf)
if module.check_mode:
module.exit_json(changed=changed)
if not is_under_version_control(conf):
(res, stdout, stderr) = put_under_version_control()
if res != 0:
msg = "failed to put glance db under version control"
module.fail_json(msg=msg, stdout=stdout, stderr=stderr)
(res, stdout, stderr) = do_dbsync()
if res != 0:
msg = "failed to synchronize glance db with repository"
module.fail_json(msg=msg, stdout=stdout, stderr=stderr)
module.exit_json(changed=changed)
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
|
