Commit 0b5cdd66 authored by Alain Takoudjou's avatar Alain Takoudjou

pre-delete pluging: update to naming conventions, add more tests

This pluging can be used a add a script which wipe data before the partition is removed
The script run after all partition services are stopped. The script is ran by supervisord
then slapos node report will wait until it finish before destroy the partition.

/reviewed-on !23
parent 7e99dfc3
......@@ -354,6 +354,7 @@ class Partition(object):
self.instance_path = instance_path
self.run_path = os.path.join(self.instance_path, 'etc', 'run')
self.service_path = os.path.join(self.instance_path, 'etc', 'service')
self.prerm_path = os.path.join(self.instance_path, 'etc', 'prerm')
self.supervisord_partition_configuration_path = \
supervisord_partition_configuration_path
self.supervisord_socket = supervisord_socket
......@@ -453,16 +454,18 @@ class Partition(object):
'USER': pwd.getpwuid(uid).pw_name,
}
def addServiceToCustomGroup(self, group_id, runner_list, path):
def addServiceToCustomGroup(self, group_suffix, partition_id, runner_list,
path, extension=''):
"""Add new services to supervisord that belong to specific group"""
group_partition_template = pkg_resources.resource_stream(__name__,
'templates/group_partition_supervisord.conf.in').read()
self.supervisor_configuration_groups += group_partition_template % {
group_id = '-'.join([partition_id, group_suffix])
self.supervisor_configuration_group += group_partition_template % {
'instance_id': group_id,
'program_list': ','.join(['_'.join([group_id, runner])
for runner in runner_list])
}
return self.addServiceToGroup(group_id, runner_list, path)
return self.addServiceToGroup(group_id, runner_list, path, extension)
def updateSymlink(self, sr_symlink, software_path):
if os.path.lexists(sr_symlink):
......@@ -612,7 +615,7 @@ class Partition(object):
runner_list = []
service_list = []
self.partition_supervisor_configuration = ""
self.supervisor_configuration_groups = ""
self.supervisor_configuration_group = ""
if os.path.exists(self.run_path):
if os.path.isdir(self.run_path):
runner_list = os.listdir(self.run_path)
......@@ -628,7 +631,7 @@ class Partition(object):
partition_id = self.computer_partition.getId()
group_partition_template = pkg_resources.resource_stream(__name__,
'templates/group_partition_supervisord.conf.in').read()
self.supervisor_configuration_groups = group_partition_template % {
self.supervisor_configuration_group = group_partition_template % {
'instance_id': partition_id,
'program_list': ','.join(['_'.join([partition_id, runner])
for runner in runner_list + service_list])
......@@ -642,10 +645,10 @@ class Partition(object):
"""
Write supervisord configuration file and update supervisord
"""
if self.supervisor_configuration_groups and \
if self.supervisor_configuration_group and \
self.partition_supervisor_configuration:
updateFile(self.supervisord_partition_configuration_path,
self.supervisor_configuration_groups +
self.supervisor_configuration_group +
self.partition_supervisor_configuration)
self.updateSupervisor()
......
......@@ -80,7 +80,7 @@ PROMISE_TIMEOUT = 3
COMPUTER_PARTITION_TIMESTAMP_FILENAME = '.timestamp'
COMPUTER_PARTITION_LATEST_BANG_TIMESTAMP_FILENAME = '.slapos_latest_bang_timestamp'
COMPUTER_PARTITION_INSTALL_ERROR_FILENAME = '.slapgrid-%s-error.log'
COMPUTER_PARTITION_WAIT_LIST_FILENAME = '.slapos-wait-services'
COMPUTER_PARTITION_WAIT_LIST_FILENAME = '.slapos-report-wait-service-list'
# XXX hardcoded watchdog_path
WATCHDOG_PATH = '/opt/slapos/bin/slapos-watchdog'
......@@ -1273,7 +1273,7 @@ stderr_logfile_backups=1
if os.path.exists(wait_file) and os.path.isfile(wait_file):
with open(wait_file) as wait_f:
processes_list = [name.strip() for name in wait_f.readlines() if name]
processes_list = [name.strip() for name in wait_f if name]
# return True if one of process in the list is running
return partition.checkProcessesFromStateList(processes_list,
state_list)
......
......@@ -9,7 +9,6 @@ from slapos.manager import interface
from slapos.grid.slapgrid import COMPUTER_PARTITION_WAIT_LIST_FILENAME
logger = logging.getLogger(__name__)
WIPE_WRAPPER_BASE_PATH = "var/run/slapos/pre-destroy/"
class Manager(object):
"""Manager is called in every step of preparation of the computer."""
......@@ -45,32 +44,31 @@ class Manager(object):
wait_filepath = os.path.join(partition.instance_path,
COMPUTER_PARTITION_WAIT_LIST_FILENAME)
wipe_base_folder = os.path.join(partition.instance_path,
WIPE_WRAPPER_BASE_PATH)
if not os.path.exists(wipe_base_folder):
if not os.path.exists(partition.prerm_path):
return
wipe_wrapper_list = [f for f in os.listdir(wipe_base_folder)
if os.path.isfile(os.path.join(wipe_base_folder, f))]
if len(wipe_wrapper_list) > 0:
group_name = partition.partition_id + '-' + "destroy"
logger.info("Adding pre-destroy scripts to supervisord...")
partition_id = partition.partition_id
wrapper_list = [f for f in os.listdir(partition.prerm_path)
if os.path.isfile(os.path.join(partition.prerm_path, f))]
if len(wrapper_list) > 0:
group_suffix = "prerm"
logger.info("Adding pre-delete scripts to supervisord...")
partition.generateSupervisorConfiguration()
partition.addServiceToCustomGroup(group_name,
wipe_wrapper_list,
wipe_base_folder)
partition.addServiceToCustomGroup(group_suffix,
partition_id,
wrapper_list,
partition.prerm_path)
partition.writeSupervisorConfigurationFile()
# check the state of all process, if the process is not started yes, start it
supervisord = partition.getSupervisorRPC()
process_list_string = ""
for name in wipe_wrapper_list:
process_name = group_name + ':' + name
process_list_string += process_name + '\n'
for name in wrapper_list:
process_name = '-'.join([partition_id, group_suffix]) + ':' + name
process_list_string += '%s\n' % process_name
status = supervisord.getProcessInfo(process_name)
if status['start'] == 0:
# process is not started yet
logger.info("Starting pre-destroy process %r..." % name)
logger.info("Starting pre-delete process %r..." % name)
supervisord.startProcess(process_name, False)
# ask to slapgrid to check theses scripts before destroy partition
......
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