def __init__(self, name, config, target_directory, dry_run=False):
"""Create a new PgDump instance
:param name: unique name of this backup (e.g. pg_dump/20100101_000000)
:param target_directory: where backup files should be stored
:param dry_run: boolean flag indicating whether we should only go
through the motions of a backup without actually
performing the heavy weight steps.
"""
self.name = name
self.config = config
self.target_directory = target_directory
self.dry_run = dry_run
self.config.validate_config(CONFIGSPEC)
self.connection = get_connection(self.config)
self.databases = pg_databases(self.config, self.connection)
LOG.info("Found databases: %s", ','.join(self.databases))
def __init__(self, name, config, target_directory, dry_run=False):
"""Create a new PgDump instance
:param name: unique name of this backup (e.g. pg_dump/20100101_000000)
:param target_directory: where backup files should be stored
:param dry_run: boolean flag indicating whether we should only go
through the motions of a backup without actually
performing the heavy weight steps.
"""
self.name = name
self.config = config
self.target_directory = target_directory
self.dry_run = dry_run
self.config.validate_config(CONFIGSPEC)
self.connection = get_connection(self.config)
self.databases = pg_databases(self.config, self.connection)
LOG.info("Found databases: %s", ','.join(self.databases))
def backup(self):
"""
Start a backup.
"""
if self.dry_run:
# Very simply dry run information
# enough to know that:
# 1) We can connect to Postgres using pgpass data
# 2) The exact databases we would dump
for name in pg_databases(self.config):
LOG.info('pg_dump -Fc %s', name)
return
# First run a pg_dumpall -g and save the globals
# Then run a pg_dump for each database we find
backup_dir = os.path.join(self.target_directory, 'data')
# put everything in data/
try:
os.mkdir(backup_dir)
except OSError, exc:
raise PgError("Failed to create backup directory %s" % backup_dir)