def on_before_host_up(self, message):
"""
Configure redis behaviour
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
repl = 'master' if self.is_replication_master else 'slave'
message.redis = {}
if self.is_replication_master:
self._init_master(message)
else:
self._init_slave(message)
__redis__['volume'].tags = self.redis_tags
__redis__['volume'] = storage2.volume(__redis__['volume'])
self._init_script = self.redis_instances.get_default_process()
message.redis['ports'] = self.redis_instances.ports
message.redis['passwords'] = self.redis_instances.passwords
message.redis['num_processes'] = len(self.redis_instances.instances)
message.redis['volume_config'] = dict(__redis__['volume'])
bus.fire('service_configured',
service_name=SERVICE_NAME,
replication=repl,
preset=self.initial_preset)
def on_before_host_up(self, message):
self._logger.debug('Handling on_before_host_up message')
self.api.init_service()
log = bus.init_op.logger
self._init_script.stop()
log.info('Copy default html error pages')
self._copy_error_pages()
log.info('Setup proxying')
self._logger.debug('Updating main config')
v2_mode = bool(self._proxies) or self._get_nginx_v2_mode_flag()
self.api._update_main_config(remove_server_section=v2_mode,
reload_service=False)
if v2_mode:
self._logger.debug('Recreating proxying with proxies:\n%s' %
self._proxies)
self.api.recreate_proxying(self._proxies)
else:
# default behaviour
roles_for_proxy = []
if __nginx__['upstream_app_role']:
roles_for_proxy = [__nginx__['upstream_app_role']]
else:
roles_for_proxy = get_all_app_roles()
self.api.make_default_proxy(roles_for_proxy)
bus.fire('service_configured',
service_name=SERVICE_NAME,
preset=self.initial_preset)
def on_before_host_up(self, message):
self._defer_init()
op_log = bus.init_op.logger
self.api.stop_service("Configuring Apache Web Server")
self.api.init_service()
self.configure_ip_forwarding()
if self._initial_v_hosts:
op_log.info("Configuring VirtualHosts.")
LOG.debug("VirtualHosts to configure: %s" % self._initial_v_hosts)
applied_vhosts = self.api.reconfigure(self._initial_v_hosts,
reload=False,
rollback_on_error=False,
async=False)
if len(applied_vhosts) != len(self._initial_v_hosts):
raise apache_api.ApacheError(
"%s Apache VirtualHosts were assigned to server but only %s were applied."
% (
len(applied_vhosts),
len(self._initial_v_hosts),
))
op_log.info("%s Virtual Hosts configured." % len(applied_vhosts))
self.api.start_service()
bus.fire("service_configured",
service_name=SERVICE_NAME,
preset=self._initial_preset)
def on_DbMsr_NewMasterUp(self, message):
"""
Switch replication to a new master server
@type message: scalarizr.messaging.Message
@param message: DbMsr_NewMasterUp
"""
try:
assert message.body.has_key("db_type")
assert message.body.has_key("local_ip")
assert message.body.has_key("remote_ip")
assert message.body.has_key(BEHAVIOUR)
postgresql_data = message.body[BEHAVIOUR]
if int(__postgresql__['replication_master']):
LOG.debug('Skip NewMasterUp. My replication role is master')
return
host = message.local_ip or message.remote_ip
LOG.info("Switching replication to a new PostgreSQL master %s", host)
bus.fire('before_postgresql_change_master', host=host)
LOG.debug("__postgresql__['volume']: %s", __postgresql__['volume'])
if __postgresql__['volume'].type in ('eph', 'lvm'):
if 'restore' in postgresql_data:
restore = backup.restore(**postgresql_data['restore'])
else:
restore = backup.restore(
type='snap_postgresql',
volume=__postgresql__['volume'],
snapshot=postgresql_data[OPT_SNAPSHOT_CNF])
if __postgresql__['volume'].type == 'eph':
self.postgresql.service.stop('Swapping storages to reinitialize slave')
LOG.info('Reinitializing Slave from the new snapshot %s',
restore.snapshot['id'])
new_vol = restore.run()
#self.postgresql.service.start()
self.postgresql.init_slave(STORAGE_PATH, host, __postgresql__['port'], self.root_password)
LOG.debug("Replication switched")
bus.fire('postgresql_change_master', host=host)
msg_data = dict(
db_type = BEHAVIOUR,
status = 'ok'
)
self.send_message(DbMsrMessages.DBMSR_NEW_MASTER_UP_RESULT, msg_data)
except (Exception, BaseException), e:
LOG.exception(e)
msg_data = dict(
db_type = BEHAVIOUR,
status="error",
last_error=str(e))
self.send_message(DbMsrMessages.DBMSR_NEW_MASTER_UP_RESULT, msg_data)
def on_IntBlockDeviceUpdated(self, message):
if not message.devname:
return
if message.action == "add":
LOG.debug("udev notified me that block device %s was attached",
message.devname)
self.send_message(
Messages.BLOCK_DEVICE_ATTACHED,
{"device_name": self.get_devname(message.devname)},
broadcast=True)
bus.fire("block_device_attached", device=message.devname)
elif message.action == "remove":
LOG.debug("udev notified me that block device %s was detached",
message.devname)
fstab = mount.fstab()
fstab.remove(message.devname)
self.send_message(
Messages.BLOCK_DEVICE_DETACHED,
{"device_name": self.get_devname(message.devname)},
broadcast=True)
bus.fire("block_device_detached", device=message.devname)
def mount(self):
self._check(mpoint=True)
mounted_to = self.mounted_to()
if mounted_to == self.mpoint:
return
elif mounted_to:
LOG.debug('Umounting %s from %s', self.id, mounted_to)
self.umount()
if not os.path.exists(self.mpoint):
os.makedirs(self.mpoint)
short_args = []
if self.mount_options:
short_args += ['-o', ','.join(self.mount_options)]
LOG.debug('Mounting %s to %s', self.id, self.mpoint)
try:
mod_mount.mount(self.device, self.mpoint, *short_args)
except linux.LinuxError as e:
# XXX: SCALARIZR-1974 is for complete solution
if linux.os.ubuntu and \
re.search(r'already mounted or /mnt/(dbstorage|pgstorage|redisstorage) busy', str(e)):
LOG.debug(
'upstart already mounted database storage volume {} to {}'.
format(self.device, self.mpoint))
else:
raise
bus.fire("block_device_mounted", volume=self)
def on_before_host_up(self, message):
self._logger.debug('Handling on_before_host_up message')
log = bus.init_op.logger
self._init_script.stop()
log.info('Copy default html error pages')
self._copy_error_pages()
log.info('Setup proxying')
self._logger.debug('Updating main config')
v2_mode = bool(self._proxies) or self._get_nginx_v2_mode_flag()
self._update_main_config(remove_server_section=v2_mode,
reload_service=False)
if v2_mode:
self._logger.debug('Recreating proxying with proxies:\n%s' % self._proxies)
self.api.recreate_proxying(self._proxies)
else:
# default behaviour
roles_for_proxy = []
if __nginx__['upstream_app_role']:
roles_for_proxy = [__nginx__['upstream_app_role']]
else:
roles_for_proxy = self.get_all_app_roles()
self.make_default_proxy(roles_for_proxy)
bus.fire('service_configured',
service_name=SERVICE_NAME,
preset=self.initial_preset)
def test_create_hook(self):
bus.base_path = os.path.realpath(os.path.dirname(__file__) + "/../../..")
config = ConfigParser()
config.read(bus.base_path + "/etc/config.ini")
bus.config = config
init_tests()
resources_path = os.path.realpath(os.path.dirname(__file__) + "/../../" + "resources")
bus.base_path = resources_path
server_id = config.get(configtool.SECT_GENERAL, configtool.OPT_SERVER_ID)
bus.define_events("init", "test")
handler = hooks.HooksHandler()
bus.fire('init')
bus.fire("test", "test_2_done", aenv="test_3_done")
#absolutely valid script created an empty file
self.assertTrue(os.path.exists(resources_path + "/hooks/test_1_done"))
#next script created a file named as 1st execution parameter
self.assertTrue(os.path.exists(resources_path + "/hooks/test_2_done"))
#3rd script touched file named $aenv
self.assertTrue(os.path.exists(resources_path + "/hooks/test_3_done"))
#test 4 touched file named server_id
self.assertTrue(os.path.exists(resources_path + "/hooks/" + server_id))
#test 5 doesn`t have an execution bit
self.assertFalse(os.path.exists(resources_path + "/hooks/test_5_done"))
#test 6 tried to execute script file with Exec format error
self.assertFalse(os.path.exists(resources_path + "/hooks/test_6_done"))
#test 7 consists an execution error
self.assertTrue(os.path.exists(resources_path + "/hooks/test_7_done"))
#test8 script has not a valid name , so supposed not to be executed
self.assertFalse(os.path.exists(resources_path + "/hooks/test_8_done"))
def on_DbMsr_NewMasterUp(self, message):
"""
Switch replication to a new master server
@type message: scalarizr.messaging.Message
@param message: DbMsr_NewMasterUp
"""
try:
assert message.body.has_key("db_type")
assert message.body.has_key("local_ip")
assert message.body.has_key("remote_ip")
assert message.body.has_key(BEHAVIOUR)
postgresql_data = message.body[BEHAVIOUR]
if int(__postgresql__['replication_master']):
LOG.debug('Skip NewMasterUp. My replication role is master')
return
host = message.local_ip or message.remote_ip
LOG.info("Switching replication to a new PostgreSQL master %s", host)
bus.fire('before_postgresql_change_master', host=host)
LOG.debug("__postgresql__['volume']: %s", __postgresql__['volume'])
if __postgresql__['volume'].type in ('eph', 'lvm'):
if 'restore' in postgresql_data:
restore = backup.restore(**postgresql_data['restore'])
else:
restore = backup.restore(
type='snap_postgresql',
volume=__postgresql__['volume'],
snapshot=postgresql_data[OPT_SNAPSHOT_CNF])
if __postgresql__['volume'].type == 'eph':
self.postgresql.service.stop('Swapping storages to reinitialize slave')
LOG.info('Reinitializing Slave from the new snapshot %s',
restore.snapshot['id'])
new_vol = restore.run()
#self.postgresql.service.start()
self.postgresql.init_slave(STORAGE_PATH, host, __postgresql__['port'], self.root_password)
LOG.debug("Replication switched")
bus.fire('postgresql_change_master', host=host)
msg_data = dict(
db_type = BEHAVIOUR,
status = 'ok'
)
self.send_message(DbMsrMessages.DBMSR_NEW_MASTER_UP_RESULT, msg_data)
except (Exception, BaseException), e:
LOG.exception(e)
msg_data = dict(
db_type = BEHAVIOUR,
status="error",
last_error=str(e))
self.send_message(DbMsrMessages.DBMSR_NEW_MASTER_UP_RESULT, msg_data)
def do_databundle(op):
try:
bus.fire('before_%s_data_bundle' % BEHAVIOUR)
# Creating snapshot
LOG.info("Creating Redis data bundle")
backup_obj = backup.backup(type='snap_redis',
volume=__redis__['volume'],
tags=__redis__['volume'].tags) # TODO: generate the same way as in
# mysql api or use __node__
restore = backup_obj.run()
snap = restore.snapshot
used_size = int(system2(('df', '-P', '--block-size=M', STORAGE_PATH))[0].split('\n')[1].split()[2][:-1])
bus.fire('%s_data_bundle' % BEHAVIOUR, snapshot_id=snap.id)
# Notify scalr
msg_data = dict(
db_type=BEHAVIOUR,
used_size='%.3f' % (float(used_size) / 1000,),
status='ok'
)
msg_data[BEHAVIOUR] = {'snapshot_config': dict(snap)}
node.__node__.messaging.send(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, msg_data)
return restore
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
node.__node__.messaging.send(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, dict(
db_type=BEHAVIOUR,
status='error',
last_error=str(e)))
def on_IntBlockDeviceUpdated(self, message):
if not message.devname:
return
if message.action == "add":
LOG.debug("udev notified me that block device %s was attached", message.devname)
self.send_message(
Messages.BLOCK_DEVICE_ATTACHED,
{"device_name" : self.get_devname(message.devname)},
broadcast=True
)
bus.fire("block_device_attached", device=message.devname)
elif message.action == "remove":
LOG.debug("udev notified me that block device %s was detached", message.devname)
fstab = mount.fstab()
fstab.remove(message.devname)
self.send_message(
Messages.BLOCK_DEVICE_DETACHED,
{"device_name" : self.get_devname(message.devname)},
broadcast=True
)
bus.fire("block_device_detached", device=message.devname)
def on_before_host_up(self, message):
op_log = bus.init_op.logger
self.api.stop_service("Configuring Apache Web Server")
self.api.init_service()
self.configure_ip_forwarding()
if self._initial_v_hosts:
op_log.info("Configuring VirtualHosts.")
LOG.debug("VirtualHosts to configure: %s" % self._initial_v_hosts)
applied_vhosts = self.api.reconfigure(self._initial_v_hosts,
reload=False,
rollback_on_error=False,
async=False)
if len(applied_vhosts) != len(self._initial_v_hosts):
raise apache_api.ApacheError("%s Apache VirtualHosts were assigned to server but only %s were applied." % (
len(applied_vhosts),
len(self._initial_v_hosts),
))
op_log.info("%s Virtual Hosts configured." % len(applied_vhosts))
self.api.start_service()
bus.fire("service_configured", service_name=SERVICE_NAME, preset=self._initial_preset)
def _start_init(self):
# Regenerage key
new_crypto_key = cryptotool.keygen()
# Prepare HostInit
__node__['boot_time'] = time.time() - sysutil.uptime()
msg = self.new_message(
Messages.HOST_INIT,
dict(
seconds_since_start=float(
'%.2f' % (time.time() - __node__['start_time'], )),
seconds_since_boot=float(
'%.2f' % (time.time() - __node__['boot_time'], )),
#operation_id = bus.init_op.operation_id,
crypto_key=new_crypto_key),
broadcast=True)
bus.fire("before_host_init", msg)
result_msg = self.send_message(msg,
new_crypto_key=new_crypto_key,
handle_host_init=True)
bus.cnf.state = ScalarizrState.INITIALIZING
bus.fire("host_init")
if result_msg and \
parse_bool(result_msg.body.get('base', {}).get('reboot_after_hostinit_phase')):
# apply setting from HostInit
self._system_api.reboot()
threading.Event().wait(600)
def _plug_volume(self, qe_mpoint):
try:
assert len(qe_mpoint.volumes), 'Invalid mpoint info %s. Volumes list is empty' % qe_mpoint
qe_volume = qe_mpoint.volumes[0]
mpoint = qe_mpoint.dir or None
assert qe_volume.volume_id, 'Invalid volume info %s. volume_id should be non-empty' % qe_volume
vol = storage2.volume(
type=self._vol_type,
id=qe_volume.volume_id,
name=qe_volume.device,
mpoint=mpoint
)
if mpoint:
logger = bus.init_op.logger if bus.init_op else LOG
logger.info('Ensure %s: take %s, mount to %s', self._vol_type, vol.id, vol.mpoint)
vol.ensure(mount=True, mkfs=True, fstab=True)
bus.fire("block_device_mounted",
volume_id=vol.id, device=vol.device)
self.send_message(Messages.BLOCK_DEVICE_MOUNTED,
{"device_name": vol.device,
"volume_id": vol.id,
"mountpoint": vol.mpoint}
)
except:
LOG.exception("Can't attach volume")
def on_before_host_up(self, message):
LOG.debug("on_before_host_up")
"""
Configure MySQL __mysql__['behavior']
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
self.generate_datadir()
self.mysql.service.stop('Configuring MySQL')
# On Debian/GCE we've got 'Another MySQL daemon already running with the same unix socket.'
socket_file = mysql2_svc.my_print_defaults('mysqld').get('socket')
if socket_file:
coreutils.remove(socket_file)
if 'Amazon' == linux.os['name']:
self.mysql.my_cnf.pid_file = os.path.join(__mysql__['data_dir'], 'mysqld.pid')
repl = 'master' if int(__mysql__['replication_master']) else 'slave'
bus.fire('before_mysql_configure', replication=repl)
if repl == 'master':
self._init_master(message)
else:
self._init_slave(message)
# Force to resave volume settings
__mysql__['volume'] = storage2.volume(__mysql__['volume'])
bus.fire('service_configured', service_name=__mysql__['behavior'],
replication=repl, preset=self.initial_preset)
def _plug_volume(self, qe_mpoint):
try:
assert len(
qe_mpoint.volumes
), 'Invalid mpoint info %s. Volumes list is empty' % qe_mpoint
qe_volume = qe_mpoint.volumes[0]
mpoint = qe_mpoint.dir or None
assert qe_volume.volume_id, 'Invalid volume info %s. volume_id should be non-empty' % qe_volume
vol = storage2.volume(type=self._vol_type,
id=qe_volume.volume_id,
name=qe_volume.device,
mpoint=mpoint)
if mpoint:
logger = bus.init_op.logger if bus.init_op else LOG
logger.info('Ensure %s: take %s, mount to %s', self._vol_type,
vol.id, vol.mpoint)
vol.ensure(mount=True, mkfs=True, fstab=True)
bus.fire("block_device_mounted",
volume_id=vol.id,
device=vol.device)
self.send_message(
Messages.BLOCK_DEVICE_MOUNTED, {
"device_name": vol.device,
"volume_id": vol.id,
"mountpoint": vol.mpoint
})
except:
LOG.exception("Can't attach volume")
def do_databundle(op):
try:
bus.fire('before_postgresql_data_bundle')
LOG.info("Creating PostgreSQL data bundle")
backup_obj = backup.backup(type='snap_postgresql',
volume=__postgresql__['volume'],
tags=__postgresql__['volume'].tags)
restore = backup_obj.run()
snap = restore.snapshot
used_size = int(system2(('df', '-P', '--block-size=M', STORAGE_PATH))[0].split('\n')[1].split()[2][:-1])
bus.fire('postgresql_data_bundle', snapshot_id=snap.id)
# Notify scalr
msg_data = {
'db_type': BEHAVIOUR,
'status': 'ok',
'used_size' : '%.3f' % (float(used_size) / 1000,),
BEHAVIOUR: {OPT_SNAPSHOT_CNF: dict(snap)}
}
__node__.messaging.send(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT,
msg_data)
return restore
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
__node__.messaging.send(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT,
dict(db_type=BEHAVIOUR,
status='error',
last_error=str(e)))
def on_DbMsr_NewMasterUp(self, message):
"""
Switch replication to a new master server
@type message: scalarizr.messaging.Message
@param message: DbMsr__NewMasterUp
"""
if not message.body.has_key(BEHAVIOUR) or message.db_type != BEHAVIOUR:
raise HandlerError(
"DbMsr_NewMasterUp message for %s behaviour must have '%s' property and db_type '%s'"
% BEHAVIOUR, BEHAVIOUR, BEHAVIOUR)
if self.is_replication_master:
LOG.debug('Skipping NewMasterUp. My replication role is master')
return
host = message.local_ip or message.remote_ip
LOG.info("Switching replication to a new %s master %s" %
(BEHAVIOUR, host))
bus.fire('before_%s_change_master' % BEHAVIOUR, host=host)
self.redis_instances.init_as_slaves(self._storage_path, host)
self.redis_instances.wait_for_sync()
LOG.debug("Replication switched")
bus.fire('%s_change_master' % BEHAVIOUR, host=host)
def on_IntServerHalt(self, message):
Flag.set(Flag.HALT)
msg = self.new_message(Messages.HOST_DOWN, broadcast=True)
try:
bus.fire("before_host_down", msg)
finally:
self.send_message(msg)
bus.fire("host_down")
def on_IntServerHalt(self, message):
Flag.set(Flag.HALT)
msg = self.new_message(Messages.HOST_DOWN, broadcast=True)
try:
bus.fire("before_host_down", msg)
finally:
self.send_message(msg)
bus.fire("host_down")
def on_IntServerReboot(self, message):
# Scalarizr must detect that it was resumed after reboot
self._set_flag(self.FLAG_REBOOT)
# Send message
msg = self.new_message(Messages.REBOOT_START, broadcast=True)
try:
bus.fire("before_reboot_start", msg)
finally:
self.send_message(msg)
bus.fire("reboot_start")
def on_IntServerReboot(self, message):
# Scalarizr must detect that it was resumed after reboot
Flag.set(Flag.REBOOT)
# Send message
msg = self.new_message(Messages.REBOOT_START, broadcast=True)
try:
bus.fire("before_reboot_start", msg)
finally:
self.send_message(msg)
bus.fire("reboot_start")
def _reload_service(self, reason=None):
LOG.info("Reloading %s%s", self._service_name, '. (%s)' % reason if reason else '')
try:
self._init_script.reload()
bus.fire(self._service_name + '_reload')
except initdv2.InitdError, e:
if e.code == initdv2.InitdError.NOT_RUNNING:
LOG.debug('%s not running', self._service_name)
else:
raise
def on_IntServerReboot(self, message):
# Scalarizr must detect that it was resumed after reboot
Flag.set(Flag.REBOOT)
# Send message
msg = self.new_message(Messages.REBOOT_START, broadcast=True)
try:
bus.fire("before_reboot_start", msg)
finally:
#mesage now send in scripts/reboot.py
#self.send_message(msg)
pass
bus.fire("reboot_start")
def mount(self):
self._check(mpoint=True)
mounted_to = self.mounted_to()
if mounted_to == self.mpoint:
return
elif mounted_to:
LOG.debug('Umounting %s from %s', self.id, mounted_to)
self.umount()
if not os.path.exists(self.mpoint):
os.makedirs(self.mpoint)
LOG.debug('Mounting %s to %s', self.id, self.mpoint)
mod_mount.mount(self.device, self.mpoint)
bus.fire("block_device_mounted", volume=self)
def _start_import(self):
data = software.system_info()
data['architecture'] = self._platform.get_architecture()
data['server_id'] = self._cnf.rawini.get(config.SECT_GENERAL, config.OPT_SERVER_ID)
# Send Hello
msg = self.new_message(Messages.HELLO, data,
broadcast=True # It's not really broadcast but need to contain broadcast message data
)
msg.body['behaviour'] = self.get_ready_behaviours()
bus.fire("before_hello", msg)
self.send_message(msg)
bus.fire("hello")
def mount(self):
self._check(mpoint=True)
mounted_to = self.mounted_to()
if mounted_to == self.mpoint:
return
elif mounted_to:
LOG.debug('Umounting %s from %s', self.id, mounted_to)
self.umount()
if not os.path.exists(self.mpoint):
os.makedirs(self.mpoint)
LOG.debug('Mounting %s to %s', self.id, self.mpoint)
mod_mount.mount(self.device, self.mpoint)
bus.fire("block_device_mounted", volume=self)
def on_before_host_up(self, message):
"""
Configure PostgreSQL behaviour
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
repl = 'master' if self.is_replication_master else 'slave'
#bus.fire('before_postgresql_configure', replication=repl)
if self.is_replication_master:
self._init_master(message)
else:
self._init_slave(message)
bus.fire('service_configured', service_name=SERVICE_NAME, replication=repl)
def on_before_host_up(self, message):
"""
Configure redis behaviour
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
repl = 'master' if self.is_replication_master else 'slave'
if self.is_replication_master:
self._init_master(message)
else:
self._init_slave(message)
self._init_script = self.redis_instances.get_default_process()
bus.fire('service_configured', service_name=SERVICE_NAME, replication=repl)
def _start_after_reboot(self):
if __node__['state'] != 'running':
self._logger.info(
'Skipping RebootFinish firing, server state is: {}'.format(
__node__['state']))
return
msg = self.new_message(
Messages.REBOOT_FINISH,
msg_body={'base': {
'hostname': self._system_api.get_hostname()
}},
broadcast=True)
bus.fire("before_reboot_finish", msg)
self.send_message(msg)
bus.fire("reboot_finish")
def _start_init(self):
# Regenerage key
new_crypto_key = cryptotool.keygen()
# Prepare HostInit
msg = self.new_message(Messages.HOST_INIT, dict(
crypto_key = new_crypto_key,
snmp_port = self._cnf.rawini.get(config.SECT_SNMP, config.OPT_PORT),
snmp_community_name = self._cnf.rawini.get(config.SECT_SNMP, config.OPT_COMMUNITY_NAME)
), broadcast=True)
bus.fire("before_host_init", msg)
self.send_message(msg, new_crypto_key=new_crypto_key, wait_ack=True)
bus.cnf.state = ScalarizrState.INITIALIZING
bus.fire("host_init")
def onSIGHUP(self, *args):
pid = os.getpid()
self._logger.debug('Received SIGHUP (pid: %d)', pid)
if pid != _pid:
return
self._logger.info('Reloading scalarizr')
self._running = False
bus.fire('shutdown')
self._shutdown_services()
self._running = True
cnf = bus.cnf
cnf.bootstrap(force_reload=True)
self._init_services()
self._start_services()
bus.fire('reload')
def on_before_host_up(self, message):
"""
Configure PostgreSQL behaviour
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
repl = 'master' if self.is_replication_master else 'slave'
#bus.fire('before_postgresql_configure', replication=repl)
if self.is_replication_master:
self._init_master(message)
else:
self._init_slave(message)
# Force to resave volume settings
__postgresql__['volume'] = storage2.volume(__postgresql__['volume'])
bus.fire('service_configured', service_name=SERVICE_NAME, replication=repl, preset=self.initial_preset)
def _shutdown(self):
self._running = False
try:
bus.fire("shutdown")
except:
self._logger.debug('Shutdown hooks exception', exc_info=sys.exc_info())
try:
self._logger.info("[pid: %d] Stopping scalarizr %s", os.getpid(), __version__)
self._shutdown_services()
except:
self._logger.debug('Shutdown services exception', exc_info=sys.exc_info())
finally:
if os.path.exists(PID_FILE):
os.remove(PID_FILE)
self._logger.info('[pid: %d] Scalarizr terminated', os.getpid())
def onSIGHUP(self, *args):
pid = os.getpid()
self._logger.debug('Received SIGHUP (pid: %d)', pid)
if pid != _pid:
return
self._logger.info('Reloading scalarizr')
self._running = False
bus.fire('shutdown')
self._shutdown_services()
self._running = True
cnf = bus.cnf
cnf.bootstrap(force_reload=True)
self._init_services()
self._start_services()
bus.fire('reload')
def on_before_host_up(self, message):
"""
Configure PostgreSQL behaviour
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
repl = 'master' if self.is_replication_master else 'slave'
#bus.fire('before_postgresql_configure', replication=repl)
if self.is_replication_master:
self._init_master(message)
else:
self._init_slave(message)
# Force to resave volume settings
__postgresql__['volume'] = storage2.volume(__postgresql__['volume'])
bus.fire('service_configured', service_name=SERVICE_NAME, replication=repl, preset=self.initial_preset)
def create_databundle_callback(task, meta):
if task['state'] == 'completed':
snap = task.result
bus.fire('%s_data_bundle' % BEHAVIOUR, snapshot_id=snap['id'])
used_size = int(system2(('df', '-P', '--block-size=M',
STORAGE_PATH))[0].split('\n')[1].split()[2][:-1])
msg_data = {
'db_type': BEHAVIOUR,
'status': 'ok',
'used_size': '%.3f' % (float(used_size) / 1000,),
BEHAVIOUR: {OPT_SNAPSHOT_CNF: snap}
}
__node__.messaging.send(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, msg_data)
else:
__node__.messaging.send(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT,
dict(db_type=BEHAVIOUR,
status='error',
last_error=str(task.exception)))
def on_before_host_up(self, message):
LOG.debug("on_before_host_up")
"""
Configure MySQL __mysql__['behavior']
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
self.generate_datadir()
self.mysql.service.stop('Configuring MySQL')
repl = 'master' if int(__mysql__['replication_master']) else 'slave'
bus.fire('before_mysql_configure', replication=repl)
if repl == 'master':
self._init_master(message)
else:
self._init_slave(message)
# Force to resave volume settings
__mysql__['volume'] = storage2.volume(__mysql__['volume'])
bus.fire('service_configured', service_name=__mysql__['behavior'], replication=repl)
def _shutdown(*args):
logger = logging.getLogger(__name__)
globals()["_running"] = False
try:
bus.fire("shutdown")
except:
logger.debug('Shutdown hooks exception', exc_info=sys.exc_info())
try:
logger.info("[pid: %d] Stopping scalarizr %s", os.getpid(), __version__)
_shutdown_services()
except:
logger.debug('Shutdown services exception', exc_info=sys.exc_info())
finally:
if os.path.exists(PID_FILE):
os.remove(PID_FILE)
logger.info('[pid: %d] Scalarizr terminated', os.getpid())
def on_DbMsr_CreateDataBundle(self, message):
try:
op = operation(name=self._op_data_bundle,
phases=[{
'name': self._phase_data_bundle,
'steps': [self._step_create_data_bundle]
}])
op.define()
with op.phase(self._phase_data_bundle):
with op.step(self._step_create_data_bundle):
bus.fire('before_postgresql_data_bundle')
snap = self._create_snapshot()
used_size = int(
system2(
('df', '-P', '--block-size=M',
STORAGE_PATH))[0].split('\n')[1].split()[2][:-1])
bus.fire('postgresql_data_bundle', snapshot_id=snap.id)
# Notify scalr
msg_data = {
'db_type': BEHAVIOUR,
'status': 'ok',
'used_size': '%.3f' % (float(used_size) / 1000, ),
BEHAVIOUR: {
OPT_SNAPSHOT_CNF: dict(snap)
}
}
self.send_message(
DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT,
msg_data)
op.ok()
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
self.send_message(
DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT,
dict(db_type=BEHAVIOUR, status='error', last_error=str(e)))
def _start_init(self):
# Regenerage key
new_crypto_key = cryptotool.keygen()
# Prepare HostInit
msg = self.new_message(Messages.HOST_INIT,
dict(crypto_key=new_crypto_key,
snmp_port=self._cnf.rawini.get(
config.SECT_SNMP, config.OPT_PORT),
snmp_community_name=self._cnf.rawini.get(
config.SECT_SNMP,
config.OPT_COMMUNITY_NAME)),
broadcast=True)
bus.fire("before_host_init", msg)
self.send_message(msg, new_crypto_key=new_crypto_key, wait_ack=True)
bus.cnf.state = ScalarizrState.INITIALIZING
bus.fire("host_init")
def on_DbMsr_NewMasterUp(self, message):
"""
Switch replication to a new master server
@type message: scalarizr.messaging.Message
@param message: DbMsr_NewMasterUp
"""
if not message.body.has_key(BEHAVIOUR) or message.db_type != BEHAVIOUR:
raise HandlerError("DbMsr_NewMasterUp message for PostgreSQL behaviour must have 'postgresql' property and db_type 'postgresql'")
postgresql_data = message.postgresql.copy()
if self.is_replication_master:
self._logger.debug('Skipping NewMasterUp. My replication role is master')
return
host = message.local_ip or message.remote_ip
self._logger.info("Switching replication to a new postgresql master %s", host)
bus.fire('before_postgresql_change_master', host=host)
if OPT_SNAPSHOT_CNF in postgresql_data and postgresql_data[OPT_SNAPSHOT_CNF]['type'] != 'eph':
snap_data = postgresql_data[OPT_SNAPSHOT_CNF]
self._logger.info('Reinitializing Slave from the new snapshot %s',
snap_data['id'])
self.postgresql.service.stop()
self._logger.debug('Destroying old storage')
self.storage_vol.destroy()
self._logger.debug('Storage destroyed')
self._logger.debug('Plugging new storage')
vol = Storage.create(snapshot=snap_data.copy(), tags=self.postgres_tags)
self._plug_storage(self._storage_path, vol)
self._logger.debug('Storage plugged')
Storage.backup_config(vol.config(), self._volume_config_path)
Storage.backup_config(snap_data, self._snapshot_config_path)
self.storage_vol = vol
self.postgresql.init_slave(self._storage_path, host, POSTGRESQL_DEFAULT_PORT, self.root_password)
self._logger.debug("Replication switched")
bus.fire('postgresql_change_master', host=host)
def _start_import(self):
data = software.system_info()
data["architecture"] = self._platform.get_architecture()
data["server_id"] = self._cnf.rawini.get(config.SECT_GENERAL, config.OPT_SERVER_ID)
# Send Hello
msg = self.new_message(
Messages.HELLO, data, broadcast=True # It's not really broadcast but need to contain broadcast message data
)
behs = self.get_ready_behaviours()
if "mysql2" in behs or "percona" in behs:
# only mysql2 should be returned to Scalr
try:
behs.remove("mysql")
except (IndexError, ValueError):
pass
msg.body["behaviour"] = behs
bus.fire("before_hello", msg)
self.send_message(msg)
bus.fire("hello")
def _shutdown(*args):
logger = logging.getLogger(__name__)
globals()["_running"] = False
try:
bus.fire("shutdown")
except:
logger.debug('Shutdown hooks exception', exc_info=sys.exc_info())
try:
logger.info("[pid: %d] Stopping scalarizr %s", os.getpid(),
__version__)
_shutdown_services()
except:
logger.debug('Shutdown services exception', exc_info=sys.exc_info())
finally:
if os.path.exists(PID_FILE):
os.remove(PID_FILE)
logger.info('[pid: %d] Scalarizr terminated', os.getpid())
def onSIGHUP(*args):
pid = os.getpid()
logger = logging.getLogger(__name__)
logger.debug('Received SIGHUP (pid: %d)', pid)
if pid != _pid:
return
logger.info('Reloading scalarizr')
signal.signal(signal.SIGCHLD, signal.SIG_IGN)
globals()["_running"] = False
bus.fire('shutdown')
_shutdown_services()
globals()["_running"] = True
signal.signal(signal.SIGCHLD, onSIGCHILD)
cnf = bus.cnf
cnf.bootstrap(force_reload=True)
_init_services()
_start_services()
bus.fire('reload')
def _shutdown(self):
self._running = False
try:
bus.fire("shutdown")
except:
self._logger.debug('Shutdown hooks exception',
exc_info=sys.exc_info())
try:
self._logger.info("[pid: %d] Stopping scalarizr %s", os.getpid(),
__version__)
self._shutdown_services()
except:
self._logger.debug('Shutdown services exception',
exc_info=sys.exc_info())
finally:
if os.path.exists(PID_FILE):
os.remove(PID_FILE)
self._logger.info('[pid: %d] Scalarizr terminated', os.getpid())
def _start_init(self):
# Regenerage key
new_crypto_key = cryptotool.keygen()
bus.init_op = self._op_api.create('system.init', lambda op: None)
# Prepare HostInit
msg = self.new_message(
Messages.HOST_INIT,
dict(seconds_since_start=float(
'%.2f' % (time.time() - __node__['start_time'], )),
seconds_since_boot=float(
'%.2f' % (time.time() - metadata.boot_time(), )),
operation_id=bus.init_op.operation_id,
crypto_key=new_crypto_key),
broadcast=True)
bus.fire("before_host_init", msg)
self.send_message(msg, new_crypto_key=new_crypto_key, wait_ack=True)
bus.cnf.state = ScalarizrState.INITIALIZING
bus.fire("host_init")
def onSIGHUP(*args):
pid = os.getpid()
logger = logging.getLogger(__name__)
logger.debug('Received SIGHUP (pid: %d)', pid)
if pid != _pid:
return
logger.info('Reloading scalarizr')
signal.signal(signal.SIGCHLD, signal.SIG_IGN)
globals()["_running"] = False
bus.fire('shutdown')
_shutdown_services()
globals()["_running"] = True
signal.signal(signal.SIGCHLD, onSIGCHILD)
cnf = bus.cnf
cnf.bootstrap(force_reload=True)
_init_services()
_start_services()
bus.fire('reload')
def on_HostInitResponse(self, message):
if bus.cnf.state == ScalarizrState.RUNNING:
self._logger.info("Ignoring 'HostInitResponse' message, cause state is '%s'", bus.cnf.state)
return
bus.initialization_op = operation(name='Initialization')
try:
self._define_initialization(message)
bus.fire("host_init_response", message)
hostup_msg = self.new_message(Messages.HOST_UP, broadcast=True)
bus.fire("before_host_up", hostup_msg)
if bus.scalr_version >= (2, 2, 3):
self.send_message(Messages.BEFORE_HOST_UP, broadcast=True, wait_subhandler=True)
self.send_message(hostup_msg)
bus.cnf.state = ScalarizrState.RUNNING
bus.fire("host_up")
except:
with bus.initialization_op as op:
if not op.finished:
with op.phase('Scalarizr routines'):
with op.step('Scalarizr routines'):
op.error()
raise
with bus.initialization_op as op:
op.ok()
def on_HostInitResponse(self, message):
if bus.cnf.state == ScalarizrState.RUNNING:
self._logger.info(
"Ignoring 'HostInitResponse' message, cause state is '%s'",
bus.cnf.state)
return
self._check_control_ports()
bus.initialization_op = operation(name='Initialization')
try:
self._define_initialization(message)
bus.fire("host_init_response", message)
hostup_msg = self.new_message(Messages.HOST_UP, broadcast=True)
bus.fire("before_host_up", hostup_msg)
if bus.scalr_version >= (2, 2, 3):
self.send_message(Messages.BEFORE_HOST_UP,
broadcast=True,
wait_subhandler=True)
self.send_message(hostup_msg)
bus.cnf.state = ScalarizrState.RUNNING
bus.fire("host_up")
except:
with bus.initialization_op as op:
if not op.finished:
with op.phase('Scalarizr routines'):
with op.step('Scalarizr routines'):
op.error()
raise
with bus.initialization_op as op:
op.ok()
def on_DbMsr_CreateDataBundle(self, message):
try:
op = operation(name=self._op_data_bundle, phases=[{
'name': self._phase_data_bundle,
'steps': [self._step_create_data_bundle]
}])
op.define()
with op.phase(self._phase_data_bundle):
with op.step(self._step_create_data_bundle):
bus.fire('before_%s_data_bundle' % BEHAVIOUR)
# Creating snapshot
snap = self._create_snapshot()
used_size = int(system2(('df', '-P', '--block-size=M', self._storage_path))[0].split('\n')[1].split()[2][:-1])
bus.fire('%s_data_bundle' % BEHAVIOUR, snapshot_id=snap.id)
# Notify scalr
msg_data = dict(
db_type = BEHAVIOUR,
used_size = '%.3f' % (float(used_size) / 1000,),
status = 'ok'
)
msg_data[BEHAVIOUR] = {'snapshot_config': dict(snap)}
self.send_message(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, msg_data)
op.ok()
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
self.send_message(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, dict(
db_type = BEHAVIOUR,
status ='error',
last_error = str(e)
))
def on_DbMsr_CreateDataBundle(self, message):
try:
op = operation(name=self._op_data_bundle, phases=[{
'name': self._phase_data_bundle,
'steps': [self._step_create_data_bundle]
}])
op.define()
with op.phase(self._phase_data_bundle):
with op.step(self._step_create_data_bundle):
bus.fire('before_%s_data_bundle' % BEHAVIOUR)
# Creating snapshot
snap = self._create_snapshot()
used_size = int(system2(('df', '-P', '--block-size=M', self._storage_path))[0].split('\n')[1].split()[2][:-1])
bus.fire('%s_data_bundle' % BEHAVIOUR, snapshot_id=snap.id)
# Notify scalr
msg_data = dict(
db_type = BEHAVIOUR,
used_size = '%.3f' % (float(used_size) / 1000,),
status = 'ok'
)
msg_data[BEHAVIOUR] = {'snapshot_config': dict(snap)}
self.send_message(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, msg_data)
op.ok()
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
self.send_message(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, dict(
db_type = BEHAVIOUR,
status ='error',
last_error = str(e)
))
def _start_init(self):
# Regenerage key
new_crypto_key = cryptotool.keygen()
bus.init_op = self._op_api.create("system.init", lambda op: None)
# Prepare HostInit
msg = self.new_message(
Messages.HOST_INIT,
dict(
seconds_since_start=float("%.2f" % (time.time() - __node__["start_time"],)),
seconds_since_boot=float("%.2f" % (time.time() - metadata.boot_time(),)),
operation_id=bus.init_op.operation_id,
crypto_key=new_crypto_key,
),
broadcast=True,
)
bus.fire("before_host_init", msg)
self.send_message(msg, new_crypto_key=new_crypto_key, wait_ack=True)
bus.cnf.state = ScalarizrState.INITIALIZING
bus.fire("host_init")
def on_DbMsr_NewMasterUp(self, message):
"""
Switch replication to a new master server
@type message: scalarizr.messaging.Message
@param message: DbMsr__NewMasterUp
"""
if not message.body.has_key(BEHAVIOUR) or message.db_type != BEHAVIOUR:
raise HandlerError("DbMsr_NewMasterUp message for %s behaviour must have '%s' property and db_type '%s'" %
BEHAVIOUR, BEHAVIOUR, BEHAVIOUR)
if self.is_replication_master:
LOG.debug('Skipping NewMasterUp. My replication role is master')
return
host = message.local_ip or message.remote_ip
LOG.info("Switching replication to a new %s master %s"% (BEHAVIOUR, host))
bus.fire('before_%s_change_master' % BEHAVIOUR, host=host)
self.redis_instances.init_as_slaves(self._storage_path, host)
self.redis_instances.wait_for_sync()
LOG.debug("Replication switched")
bus.fire('%s_change_master' % BEHAVIOUR, host=host)
def on_DbMsr_CreateDataBundle(self, message):
try:
op = operation(name=self._op_data_bundle, phases=[{
'name': self._phase_data_bundle,
'steps': [self._step_create_data_bundle]
}])
op.define()
with op.phase(self._phase_data_bundle):
with op.step(self._step_create_data_bundle):
bus.fire('before_postgresql_data_bundle')
snap = self._create_snapshot()
used_size = int(system2(('df', '-P', '--block-size=M', STORAGE_PATH))[0].split('\n')[1].split()[2][:-1])
bus.fire('postgresql_data_bundle', snapshot_id=snap.id)
# Notify scalr
msg_data = {
'db_type': BEHAVIOUR,
'status': 'ok',
'used_size' : '%.3f' % (float(used_size) / 1000,),
BEHAVIOUR: {OPT_SNAPSHOT_CNF: dict(snap)}
}
self.send_message(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, msg_data)
op.ok()
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
self.send_message(DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, dict(
db_type = BEHAVIOUR,
status ='error',
last_error = str(e)
))
def do_databundle(op):
try:
bus.fire('before_%s_data_bundle' % BEHAVIOUR)
# Creating snapshot
LOG.info("Creating Redis data bundle")
backup_obj = backup.backup(
type='snap_redis',
volume=__redis__['volume'],
tags=__redis__['volume'].tags
) # TODO: generate the same way as in
# mysql api or use __node__
restore = backup_obj.run()
snap = restore.snapshot
used_size = int(
system2(('df', '-P', '--block-size=M',
STORAGE_PATH))[0].split('\n')[1].split()[2][:-1])
bus.fire('%s_data_bundle' % BEHAVIOUR, snapshot_id=snap.id)
# Notify scalr
msg_data = dict(db_type=BEHAVIOUR,
used_size='%.3f' % (float(used_size) / 1000, ),
status='ok')
msg_data[BEHAVIOUR] = {'snapshot_config': dict(snap)}
node.__node__.messaging.send(
DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT, msg_data)
return restore
except (Exception, BaseException), e:
LOG.exception(e)
# Notify Scalr about error
node.__node__.messaging.send(
DbMsrMessages.DBMSR_CREATE_DATA_BUNDLE_RESULT,
dict(db_type=BEHAVIOUR, status='error', last_error=str(e)))
def on_before_host_up(self, message):
"""
Configure redis behaviour
@type message: scalarizr.messaging.Message
@param message: HostUp message
"""
repl = 'master' if self.is_replication_master else 'slave'
message.redis = {}
if self.is_replication_master:
self._init_master(message)
else:
self._init_slave(message)
__redis__['volume'].tags = self.redis_tags
__redis__['volume'] = storage2.volume(__redis__['volume'])
self._init_script = self.redis_instances.get_default_process()
message.redis['ports'] = self.redis_instances.ports
message.redis['passwords'] = self.redis_instances.passwords
message.redis['num_processes'] = len(self.redis_instances.instances)
message.redis['volume_config'] = dict(__redis__['volume'])
bus.fire('service_configured', service_name=SERVICE_NAME, replication=repl, preset=self.initial_preset)
