def write_to_zookeeper(self):
with zk_utils.connection() as zk:
base_node = os.path.join('kolla', self.deployment_id)
if zk.exists(base_node) and CONF.force:
LOG.info('Deleting "%s" ZK node tree' % base_node)
zk.delete(base_node, recursive=True)
elif zk.exists(base_node) and not CONF.force:
LOG.info('"%s" ZK node tree is already exists. If you'
' want to delete it, use --force' % base_node)
sys.exit(1)
self.write_config_to_zookeeper(zk)
filter_out = ['groups', 'hostvars', 'kolla_config',
'inventory_hostname']
for var in self.required_vars:
if (var in filter_out):
LOG.debug('Var "%s" with value "%s" is filtered out' %
(var, self.required_vars[var]))
continue
var_value = self.required_vars[var]
if isinstance(self.required_vars[var], dict):
var_value = json.dumps(self.required_vars[var])
var_path = os.path.join(base_node, 'variables', var)
zk.ensure_path(var_path)
try:
zk.set(var_path, "" if var_value is None else var_value)
LOG.debug('Updated "%s" node in zookeeper.' % var_path)
except Exception as te:
LOG.error('Cant create "%s" node with "%s" item in '
'Zookeeper. Error was: "%s"' %
(var_path, var_value, te))
def main():
CONF(sys.argv[1:], project='kolla-mesos')
with zk_utils.connection(CONF.zookeeper.host) as zk:
if CONF.show:
zk_utils.cat(zk, CONF.path)
else:
zk_utils.tree(zk, CONF.path)
def get_deployment_ids():
ids = []
with zk_utils.connection() as zk:
children = zk.get_children('/kolla')
for child in children:
if child not in ['groups', 'variables', 'common',
'config', 'commands']:
ids.append(child)
return ids
def get_status(tasks):
"""Get status from zookeeper
Returns the status of for each task
{
task1: {
'register': (register_path, reg_status)
'requirements': {
reqt1_path: reqt_status
reqt2_path: reqt_status
...
}
}
Where:
reg_status = 'done', 'running', 'waiting'
reqt_status = '', 'done'
"""
status = {}
with zk_utils.connection() as zk:
# get status of requirements
for task, info in tasks.items():
status[task] = {}
if 'requires' in info:
status[task]['requirements'] = {}
for path in info['requires']:
reqt_status = ''
if zk.exists(path):
reqt_status = 'done'
status[task]['requirements'][path] = reqt_status
# get status of registrations
for task, info in tasks.items():
if 'register' in info:
status[task]['register'] = {}
reg_status = 'NOT DONE'
reg_path = info['register']
if zk.exists(reg_path):
reg_status = 'done'
elif 'requires' in info:
all_done = True
for path in info['requires']:
if not status[task]['requirements'][path]:
all_done = False
break
if not all_done:
reg_status = 'waiting'
status[task]['register'] = (reg_path, reg_status)
return status
def get_status(tasks):
"""Get status from zookeeper.
:returns: the status for each task
Below is an example of what can be returned::
{
task1: {
'register': (register_path, reg_status)
'requirements': {
reqt1_path: reqt_status
reqt2_path: reqt_status
...
}
}
}
Where:
reg_status = 'done', 'running', 'waiting'
reqt_status = '', 'done'
"""
status = {}
with zk_utils.connection() as zk:
# get status of requirements
for task, info in tasks.items():
status[task] = {}
status[task]['requirements'] = {}
for path in info['requires']:
req_status = ''.encode('utf-8')
if zk.exists(path):
req_status, _ = zk.get(path)
status[task]['requirements'][path] = req_status.decode('utf-8')
# get status of registrations
for task, info in tasks.items():
status[task]['register'] = {}
reg_path = info['register']
reg_status = ''.encode('utf-8')
if zk.exists(reg_path):
reg_status, _ = zk.get(reg_path)
status[task]['register'] = (reg_path, reg_status.decode('utf-8'))
return status
def cleanup():
LOG.info("Starting cleanup...")
marathon_client = marathon.Client()
chronos_client = chronos.Client()
with zk_utils.connection() as zk:
zk_utils.clean(zk)
LOG.info("Starting cleanup of apps")
marathon_client.remove_all_apps()
LOG.info("Starting cleanup of groups")
marathon_client.remove_all_groups()
LOG.info("Starting cleanup of chronos jobs")
chronos_client.remove_all_jobs()
LOG.info("Checking whether all tasks in Mesos are exited")
wait_for_mesos_cleanup()
LOG.info("Starting cleanup of Docker containers")
remove_all_containers()
LOG.info("Starting cleanup of Docker volumes")
remove_all_volumes()
def write_to_zookeeper(self):
with zk_utils.connection(CONF.zookeeper.host) as zk:
# to clean these up, uncomment
zk.delete('/kolla', recursive=True)
self.write_config_to_zookeeper(zk)
filter_out = ['groups', 'hostvars', 'kolla_config',
'inventory_hostname']
for var in self.required_vars:
if (var in filter_out):
LOG.info('set(%s) = %s' % (var, self.required_vars[var]))
continue
var_value = self.required_vars[var]
if isinstance(self.required_vars[var], dict):
var_value = json.dumps(self.required_vars[var])
var_path = os.path.join('kolla', 'variables', var)
zk.ensure_path(var_path)
try:
zk.set(var_path, var_value)
except Exception as te:
LOG.error('%s=%s -> %s' % (var_path, var_value, te))
def _build_runner(service_name, service_dir, variables=None):
config_dir = os.path.join(service_dir, '..', 'config')
base_node = os.path.join('kolla', CONF.kolla.deployment_id)
filename = service_definition.find_service_file(service_name,
service_dir)
proj_name = filename.split('/')[-2]
proj_yml_name = os.path.join(config_dir, proj_name,
'defaults', 'main.yml')
# is this a snapshot or from original src?
var_path = os.path.join(service_dir, 'variables.yml')
is_snapshot = (os.path.exists(var_path) and
not os.path.exists(proj_yml_name))
if variables is None:
if not is_snapshot:
variables = _load_variables_from_file(service_dir, proj_name)
else:
variables = _load_variables_from_snapshot(service_dir)
# 1. validate the definition with the given variables
service_definition.validate(service_name, service_dir, variables)
runner = Runner.load_from_file(filename, variables)
with zk_utils.connection() as zk:
# 2. write variables to zk (globally)
config.write_variables_zookeeper(zk, variables,
overwrite=not is_snapshot)
# 3. write common config and start script
config.write_common_config_to_zookeeper(config_dir, zk, variables,
overwrite=not is_snapshot)
# 4. write files/config to zk
runner.write_to_zookeeper(zk, base_node)
# 5. generate the deployment files
kolla_config = config.get_start_config(config_dir, variables)
runner.generate_deployment_files(kolla_config, variables)
return runner
def scale_service(service_name, instances, force=False):
with zk_utils.connection() as zk:
runner = Runner.load_from_zk(zk, service_name)
return runner.scale(instances, force)
def get_service(service_name, version=None):
with zk_utils.connection() as zk:
runner = Runner.load_from_zk(zk, service_name)
return runner.get_state(version)
def snapshot_service(service_name, output_dir):
with zk_utils.connection() as zk:
runner = Runner.load_from_zk(zk, service_name)
variables = _load_variables_from_zk(zk)
runner.snapshot(zk, output_dir, variables)
def kill_service(service_name):
with zk_utils.connection() as zk:
runner = Runner.load_from_zk(zk, service_name)
runner.kill(zk)
