本文整理汇总了Python中trac.db.DatabaseManager.backup方法的典型用法代码示例。如果您正苦于以下问题：Python DatabaseManager.backup方法的具体用法？Python DatabaseManager.backup怎么用？Python DatabaseManager.backup使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类trac.db.DatabaseManager的用法示例。
在下文中一共展示了DatabaseManager.backup方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: ProjectBackup
# 需要导入模块: from trac.db import DatabaseManager [as 别名]
# 或者: from trac.db.DatabaseManager import backup [as 别名]
class ProjectBackup(object):
"""
Class models the project backups (snapshots), doable by the project admin.
Example usage:
>>> prj = Project()
>>> pb = ProjectBackup(prj)
>>> pb.backup()
Properties (set automatically on __init__):
- mysql_path: path to mysql client (default: expect it to found from ``$PATH``)
- project: reference to project to backup/restore
- env: environment object based on given project info
- dm: database manager setup against the environment
Configuration keys:
Class uses following configuration keys (placed either in ``project.ini`` or
to project specific ``conf/trac.ini`` -file) to adjust the functionality:
"""
def __init__(self, project):
"""
Initiates the class.
:param project: Instance of the :class:`Project` to backup/restore
"""
self.project = project
self.env = open_environment(self.project.trac_fs_path, use_cache=True)
backup_dir = self.env.config.get('trac', 'backup_dir', '/tmp')
self.backup_path_tmpl = backup_dir + '/project-%s.snapshot-%d.sql'
self.mysql_path = self.env.config.get('trac', 'mysql_path', 'mysql')
self.dm = DatabaseManager(self.env)
def backup(self, user_id, description=None):
"""
Creates a database backup of the trac instance.
.. IMPORTANT:: Only the **database** is backed up, while attachments are left as is.
:param user_id: Id the user who did the restore
:param description: Optional description about the backup, why it was done or current state...
Returns:
True if all went well, otherwise TracError is raised.
"""
assert isinstance(user_id, long), 'User id needs to be long int'
description = description if description else ''
dump_path = None
# Create database entry about the back
with admin_transaction() as cursor:
cursor.execute(("INSERT INTO project_backup (project_key, created_by, description)"
"VALUES (%s, %s, %s)"), (self.project.id, user_id, description))
# Now, take the last inserted id and use it to generate unique dump path
dump_path = self.backup_path_tmpl % (self.project.env_name, cursor.lastrowid)
# Use Trac's database manager to dump the database into filesystem
try:
self.dm.backup(dump_path)
except OSError, err:
self.env.log.exception(err)
raise TracError('Failed to dump database: %s' % err)
return True