def start_backup(self, backup_info):
"""
Start of the backup.
The method performs all the preliminary operations required for a
backup to start.
:param barman.infofile.BackupInfo backup_info: backup information
"""
self.current_action = "connecting to database (%s)" % \
self.executor.config.conninfo
output.debug(self.current_action)
# with self.executor.server.pg_connect():
# Retrieve PostgreSQL server metadata
self._pg_get_metadata(backup_info)
# Issue _pg_start_backup on the PostgreSQL server
self.current_action = "issuing start backup command"
_logger.debug(self.current_action)
label = "Barman backup %s %s" % (
backup_info.server_name, backup_info.backup_id)
# Concurrent backup: issue a pgespresso_start_Backup() command
postgres = self.executor.server.postgres
start_row = postgres.pgespresso_start_backup(label)
backup_data, start_time = start_row
wal_re = re.compile(
'^START WAL LOCATION: (.*) \(file (.*)\)',
re.MULTILINE)
wal_info = wal_re.search(backup_data)
backup_info.set_attribute('status', "STARTED")
backup_info.set_attribute('timeline',
int(wal_info.group(2)[0:8], 16))
backup_info.set_attribute('begin_xlog', wal_info.group(1))
backup_info.set_attribute('begin_wal', wal_info.group(2))
backup_info.set_attribute('begin_offset',
xlog.get_offset_from_location(
wal_info.group(1)))
backup_info.set_attribute('backup_label', backup_data)
backup_info.set_attribute('begin_time', start_time)
def test_get_offset_from_location(self):
assert xlog.get_offset_from_location('0/1B0C7A0') == 11585440
assert xlog.get_offset_from_location('9AFB/5B13FD70') == 1310064
assert xlog.get_offset_from_location('9B02/29883178') == 8925560
assert xlog.get_offset_from_location('BLAH') is None
def test_get_offset_from_location(self):
assert xlog.get_offset_from_location('0/1B0C7A0') == 11585440
assert xlog.get_offset_from_location('9AFB/5B13FD70') == 1310064
assert xlog.get_offset_from_location('9B02/29883178') == 8925560
assert xlog.get_offset_from_location('BLAH') is None
def start_backup(self, backup_info):
"""
Start of the backup.
The method performs all the preliminary operations required for a
backup to start.
:param barman.infofile.BackupInfo backup_info: the backup information
"""
self.current_action = "connecting to database (%s)" % \
self.config.conninfo
output.debug(self.current_action)
with self.server.pg_connect():
# Get the PostgreSQL data directory location
self.current_action = 'detecting data directory'
output.debug(self.current_action)
data_directory = self.server.get_pg_setting('data_directory')
backup_info.set_attribute('pgdata', data_directory)
# Set server version
backup_info.set_attribute('version', self.server.server_version)
# Set configuration files location
cf = self.server.get_pg_configuration_files()
if cf:
for key in sorted(cf.keys()):
backup_info.set_attribute(key, cf[key])
# Get tablespaces information
self.current_action = 'detecting tablespaces'
output.debug(self.current_action)
tablespaces = self.server.get_pg_tablespaces()
if tablespaces and len(tablespaces) > 0:
backup_info.set_attribute('tablespaces', tablespaces)
for item in tablespaces:
msg = "\t%s, %s, %s" % (item.oid, item.name, item.location)
_logger.info(msg)
# Issue pg_start_backup on the PostgreSQL server
self.current_action = "issuing start backup command"
_logger.debug(self.current_action)
label = "Barman backup %s %s" % (
backup_info.server_name, backup_info.backup_id)
# Exclusive backup: issue a pg_start_Backup() command
if BackupOptions.CONCURRENT_BACKUP not in \
self.config.backup_options:
start_row = self.pg_start_backup(label)
start_xlog, start_file_name, start_file_offset, start_time = \
start_row
backup_info.set_attribute('status', "STARTED")
backup_info.set_attribute('timeline',
int(start_file_name[0:8], 16))
backup_info.set_attribute('begin_xlog', start_xlog)
backup_info.set_attribute('begin_wal', start_file_name)
backup_info.set_attribute('begin_offset', start_file_offset)
backup_info.set_attribute('begin_time', start_time)
# Concurrent backup: use pgespresso extension to start a the backup
else:
start_row = self.pgespresso_start_backup(label)
backup_data, start_time = start_row
wal_re = re.compile(
'^START WAL LOCATION: (.*) \(file (.*)\)',
re.MULTILINE)
wal_info = wal_re.search(backup_data)
backup_info.set_attribute('status', "STARTED")
backup_info.set_attribute('timeline',
int(wal_info.group(2)[0:8], 16))
backup_info.set_attribute('begin_xlog', wal_info.group(1))
backup_info.set_attribute('begin_wal', wal_info.group(2))
backup_info.set_attribute('begin_offset',
xlog.get_offset_from_location(
wal_info.group(1)))
backup_info.set_attribute('backup_label', backup_data)
backup_info.set_attribute('begin_time', start_time)
