def process_event(self, message: str) -> None:
"""
Callback function to receive and process event.
Args:
message (str): event message.
"""
try:
event = json.loads(message.decode('utf-8'))
health_event = HealthEvent.dict_to_object(event)
except Exception as e:
Log.error(
f"Invalid format for event {message}, Error: {e}. Forcefully ack."
)
return CONSUMER_STATUS.SUCCESS
Log.debug(f"Captured {message} for evaluating health monitor.")
action_handler = None
try:
action_list = self._rule_manager.evaluate(health_event)
if action_list:
Log.info(f"Evaluated {health_event} with action {action_list}")
action_handler = ActionFactory.get_action_handler(
health_event, action_list)
action_handler.act(health_event, action_list)
return CONSUMER_STATUS.SUCCESS
except Exception as e:
Log.error(
f"Failed to process {message} error: {e} {traceback.format_exc()}"
)
return CONSUMER_STATUS.FAILED
async def receive(request):
Log.debug(f"Received GET request for component " \
f"{request.rel_url.query['component']}")
try:
component = request.rel_url.query['component']
EventMessage.subscribe(component=component)
alert = EventMessage.receive()
except EventMessageError as e:
status_code = e.rc
error_message = e.desc
Log.error(f"Unable to receive event message for component: " \
f"{component}, status code: {status_code}," \
f" error: {error_message}")
response_obj = {'error_code': status_code, 'exception': \
['EventMessageError', {'message': error_message}]}
except Exception as e:
exception_key = type(e).__name__
exception = RestServerError(exception_key).http_error()
status_code = exception[0]
error_message = exception[1]
Log.error(f"Internal error while receiving event messages for " \
f"component: {component}, status code: " \
f"{status_code}, error: {error_message}")
response_obj = {'error_code': status_code, 'exception': \
[exception_key, {'message': error_message}]}
raise EventMessageError(status_code, error_message) from e
else:
status_code = 200 # No exception, Success
response_obj = {'alert': alert}
Log.debug(f"GET method finished with status code: {status_code}" \
f"for component {component} and received event message " \
f"alert info. - {alert['iem']['info']}.")
finally:
return web.Response(text=json.dumps(response_obj), \
status=status_code)
def process_resp(self, resp: str):
"""
Parse the response and detect success / failure
Args:
resp : received response
"""
if self.timeout_reached == True:
return CONSUMER_STATUS.FAILED_STOP
try:
resp = json.loads(resp.decode('utf-8'))
except Exception as e:
Log.error(f"Invalid resp {resp}, Error: {e}")
return CONSUMER_STATUS.SUCCESS
Log.debug(f"Received message {resp}")
if self._filter_event(json.dumps(resp)):
Log.info(f"Filtered Event detected: {resp}")
# Parse respnse for Enclosure shutdown Success/Failure
if self._parse_response(json.dumps(resp)):
self._encl_shutdown_successful = True
# cleanup
self._uuid = None
self._is_resp_received = True
return CONSUMER_STATUS.SUCCESS_STOP
return CONSUMER_STATUS.SUCCESS
def _register_for_resp(self):
"""
Register to wait for a response to the sent request.
"""
# Unique consumer_group for each actuator response
self.consumer_group = self._uuid
self.consumer_id = Conf.get(const.HA_GLOBAL_INDEX,
f"ACTUATOR_MANAGER{_DELIM}consumer_id")
self.resp_message_type = Conf.get(
const.HA_GLOBAL_INDEX,
f"ACTUATOR_MANAGER{_DELIM}resp_message_type")
self.consumer = MessageBus.get_consumer(
consumer_id=str(self.consumer_id),
consumer_group=self.consumer_group,
message_type=self.resp_message_type,
callback=self.process_resp,
offset="latest",
timeout=ACTUATOR_MSG_WAIT_TIME)
# Start the thread to listen to response
self.consumer.start()
Log.debug(
f"Waiting to get response on message_type {self.resp_message_type}"
)
async def send_webhook_info(request):
Log.debug("Received POST request for webhook information")
try:
external_server_info = await request.json()
# write webhook info to the external server
AuditLogRequestHandler.webhook_info = external_server_info
# TODO store webhook_info to persistent storage
except AuditLogError as e:
status_code = e.rc
error_message = e.desc
Log.error(f"Unable to receive audit webhook information, status code: " \
f"{status_code}, error: {error_message}")
response_obj = {'error_code': status_code, 'exception': \
['AuditLogError', {'message': error_message}]}
except Exception as e:
exception_key = type(e).__name__
exception = RestServerError(exception_key).http_error()
status_code = exception[0]
error_message = exception[1]
Log.error(f"Internal error while receiving webhook info." \
f"status code: {status_code}, error: {error_message}")
response_obj = {'error_code': status_code, 'exception': \
[exception_key, {'message': error_message}]}
raise AuditLogError(status_code, error_message) from e
else:
status_code = 200 # No exception, Success
response_obj = {}
Log.debug(f"Receiving webhook info using POST method finished with status " \
f"code: {status_code}")
response_obj = {'status_code': status_code, 'status': 'success'}
finally:
return web.Response(text=json.dumps(response_obj), \
status=status_code)
def main(action: str = '') -> int:
"""
Main function acts as switch case for IPHealthChecker resource agent.
Args:
action (str): Resource agent action called by Pacemaker. Defaults to ''.
Returns:
int: Provide output as int code provided by pacemaker.
"""
try:
if action == "meta-data":
return VipHealthMonitor.metadata()
ConfigManager.init("resource_agent")
resource_agent = VipHealthMonitor()
Log.debug(f"{resource_agent} initialized for action {action}")
if action == "monitor":
return resource_agent.monitor()
elif action == "start":
return resource_agent.start()
elif action == "stop":
return resource_agent.stop()
else:
print(f"Usage {sys.argv[0]} [monitor] [start] [stop] [meta-data]")
exit(0)
except Exception as e:
Log.error(
f"vip health check failed to perform {action}. Error: {traceback.format_exc()} {e}"
)
return const.OCF_ERR_GENERIC
def remove_rule(self, resource: str, event: HEALTH_STATUSES,
action: HEALTH_MON_ACTIONS):
"""
For the rule resource/event remove "action" from confstore.
If actions list becomes empty, delete the rule
Args:
resource(str): resource name
event(str): event type
action(str): action to be removed
"""
self._validate_action(action)
key = self._prepare_key(resource, event)
val = []
Log.info(f"Removing rule for key: {key} ,value: {action}")
kv = self._get_val(key)
if kv:
_, val = self._get_k_v(kv)
if action not in val:
Log.warn(f"KV not found for key: {key}, value: {action}")
else:
val.remove(action)
if len(val) == 0:
self._confstore.delete(key)
Log.debug(
f"key value removed for {key} , {action}. value list empty; deleting key {key}"
)
else:
val = json.dumps(val)
self._confstore.update(key, val)
Log.debug(f"KV removed for {key} , {action}")
else:
Log.warn(f"key {key} not found")
def run_cmd(self, cmd, check_error=True):
"""
Run command and throw error if cmd failed
Args:
cmd ([string]): Command to execute on system.
Raises:
Exception: raise command failed exception.
HACommandTerminated: Command termineted exception
Returns:
string: Command output.
"""
try:
_err = ""
_proc = SimpleProcess(cmd)
_output, _err, _rc = _proc.run(universal_newlines=True)
Log.debug(f"cmd: {cmd}, output: {_output}, err: {_err}, rc: {_rc}")
if _rc != 0 and check_error:
Log.error(
f"cmd: {cmd}, output: {_output}, err: {_err}, rc: {_rc}")
raise Exception(f"Failed to execute {cmd}")
return _output, _err, _rc
except Exception as e:
Log.error("Failed to execute %s Error: %s %s" % (cmd, e, _err))
raise HACommandTerminated("Failed to execute %s Error: %s %s" %
(cmd, e, _err))
def __init__(self, config: str):
"""Constructor."""
try:
super(ResetCmd, self).__init__(config)
except Exception as e:
Log.debug("Initializing reset phase failed")
raise OpenldapPROVError(f'exception: {e}')
def cleanup_db(self, node, data_only):
"""
Args:
node ([string]): Node name.
data_only ([boolean]): Remove data only.
Action:
consul data:
{'entity': 'enclosure', 'entity_id': '0',
'component': 'controller', 'component_id': 'node1'}
if data_only is True then remove data else remove
data and perform cleanup.
"""
resources = Conf.get(const.RESOURCE_GLOBAL_INDEX, "resources")
node = "all" if node is None else node
Log.debug(f"Performing cleanup for {node} node")
for key in resources.keys():
if node == "all":
self._decision_monitor.acknowledge_resource(key, data_only)
elif node in key:
self._decision_monitor.acknowledge_resource(key, data_only)
else:
pass
if not data_only:
Log.info(f"Reseting HA decision event for {node}")
self.reset_failover(node)
def reset_failover(self, node=None, soft_cleanup=False):
"""
Cleanup pacemaker failcount to allow failback.
"""
node = "all" if node is None else node
cmd = const.PCS_CLEANUP if node == "all" else const.PCS_CLEANUP + f" --node {node}"
if soft_cleanup:
if self.is_cleanup_required(node):
_output, _err, _rc = self._execute.run_cmd(
const.PCS_FAILCOUNT_STATUS)
Log.info(
f"Resource failcount before Failback: {_output}, Error:{_err}, RC:{_rc}"
)
_output, _err, _rc = self._execute.run_cmd(cmd)
Log.info(
f"Failback is happened, Output:{_output}, Error:{_err}, RC:{_rc}"
)
_output, _err, _rc = self._execute.run_cmd(
const.PCS_FAILCOUNT_STATUS)
Log.info(
f"Resource failcount after Failback: {_output}, Error:{_err}, RC:{_rc}"
)
else:
Log.debug(
"cleanup is not required alerts are not yet resolved.")
else:
self._execute.run_cmd(cmd)
Log.debug(f"Status: {self._execute.run_cmd(const.PCS_STATUS)}")
def register_message_type(self, admin_id: str, message_types: list, \
partitions: int):
"""
Creates a list of message types.
Parameters:
admin_id A String that represents Admin client ID.
message_types This is essentially equivalent to the list of
queue/topic name. For e.g. ["Alert"]
partitions Integer that represents number of partitions to be
created.
"""
Log.debug(f"Register message type {message_types} using {admin_id}" \
f" with {partitions} partitions")
admin = self._clients['admin'][admin_id]
new_message_type = [NewTopic(each_message_type, \
num_partitions=partitions) for each_message_type in message_types]
created_message_types = admin.create_topics(new_message_type)
self._task_status(created_message_types, method='register_message_type')
for each_message_type in message_types:
for list_retry in range(1, self._max_list_message_type_count+2):
if each_message_type not in \
list(self._get_metadata(admin).keys()):
if list_retry > self._max_list_message_type_count:
Log.error(f"MessageBusError: Timed out after retry " \
f"{list_retry} while creating message_type " \
f"{each_message_type}")
raise MessageBusError(errno.ETIMEDOUT, "Timed out " +\
"after retry %d while creating message_type %s.", \
list_retry, each_message_type)
time.sleep(list_retry*1)
continue
else:
break
def monitor(self, state=const.STATE_RUNNING):
"""
Monitor hardware and gives result
"""
filename, path, service, node = self._get_params()
Log.debug(f"In monitor for {filename}")
if not os.path.exists(const.HA_INIT_DIR +
filename) and state != const.STATE_STOP:
return const.OCF_NOT_RUNNING
self_node, other_node, self_node_status, other_node_status = self._get_status(
self.decision_monitor.get_resource_status, path)
Log.debug(f"In monitor group key: {path}, node: {self_node} "
f"status: {self_node_status}, service: {service}")
if node != '-' and node != self_node and other_node_status == Action.RESOLVED:
Log.info(f"Ack IEM for {filename} with key {path} node {node}")
self._acknowledge_event(path + '_' + node)
return self._monitor_action(self._acknowledge_event,
state,
self_node=self_node,
other_node=other_node,
self_node_status=self_node_status,
other_node_status=other_node_status,
filename=filename,
path=path,
service=service)
def start(self) -> int:
"""
Start service and provide output.
Command to start service:
$ systemctl reset-failed service
$ systemctl start service
Returns:
int: Return as per service status.
active: return const.OCF_SUCCESS.
unknown: Wait till timeout.
failed or timeout will cause failover or moved to Stopped state.
"""
service = self._get_systemd_service()
Log.debug(f"Start: Start {service} service")
self._execute.run_cmd(f"systemctl reset-failed {service}",
check_error=False)
self._execute.run_cmd(f"systemctl start {service}", check_error=False)
while True:
Log.debug(f"Start: Starting {service} service")
status: str = self._get_service_status(service).strip()
if status == "active":
break
elif status == "failed":
Log.info(
f"Start: Failed to start {service} and may cause failover or Stop."
)
return const.OCF_ERR_GENERIC
else:
time.sleep(1)
continue
Log.info(f"Start: Started {service} service")
return const.OCF_SUCCESS
def filter_event(self, msg: str) -> bool:
"""
Filter event.
Args:
msg (str): Msg
"""
try:
resource_alert_required = False
message = json.dumps(ast.literal_eval(msg))
message = json.loads(message)
Log.debug('Received alert from fault tolerance')
event_resource_type = message.get(
EventAttr.EVENT_PAYLOAD.value).get(
HealthAttr.RESOURCE_TYPE.value)
required_resource_type_list = Conf.get(
const.HA_GLOBAL_INDEX, f"CLUSTER{_DELIM}resource_type")
if event_resource_type in required_resource_type_list:
resource_alert_required = True
Log.info(
f'This alert needs an attention: resource_type: {event_resource_type}'
)
return resource_alert_required
except Exception as e:
raise EventFilterException(
f"Failed to filter cluster resource event. Message: {msg}, Error: {e}"
)
def run_cmd(self, cmd, check_error=True, secret=None):
"""
Run command and throw error if cmd failed
Args:
cmd ([string]): Command to execute on system.
Raises:
Exception: raise command failed exception.
HACommandTerminated: Command termineted exception
Returns:
string: Command output.
"""
try:
cmd_help = cmd.replace(secret,
"****") if secret is not None else cmd
_err = ""
_proc = SimpleProcess(cmd)
_output, _err, _rc = _proc.run(universal_newlines=True)
Log.debug(
f"cmd: {cmd_help}, output: {_output}, err: {_err}, rc: {_rc}")
if _rc != 0 and check_error:
Log.error(
f"cmd: {cmd_help}, output: {_output}, err: {_err}, rc: {_rc}"
)
raise Exception(f"Failed to execute {cmd_help}")
return _output, _err, _rc
except Exception as e:
Log.error(f"Failed to execute {cmd_help} Error: {e}.")
raise HACommandTerminated(
f"Failed to execute {cmd_help} Error: {e}.")
async def _exc_components_cmd(commands: List, bundle_id: str, path: str, \
component: str, node_name: str, comment: str, config_url:str,
services:str, binlogs:bool, coredumps:bool, stacktrace:bool,
duration:str, size_limit:str):
"""
Executes the Command for Bundle Generation of Every Component.
commands: Command of the component :type:str
bundle_id: Unique Bundle ID of the generation process. :type:str
path: Path to create the tar by components :type:str
component: Name of Component to be executed :type: str
node_name: Name of Node where the Command is being Executed :type:str
comment: User Comment: type:str
"""
for command in commands:
# SB Framework will not parse additional filters until all the components
# accept filters in their respective support bundle scripts.
cli_cmd = f"{command} -b {bundle_id} -t {path} -c {config_url}"\
f" -s {services} --duration {duration} --size_limit {size_limit}"\
f" --binlogs {binlogs} --coredumps {coredumps} --stacktrace {stacktrace}"
Log.info(f"Executing command -> {cli_cmd}")
cmd_proc = SimpleProcess(cli_cmd)
output, err, return_code = cmd_proc.run()
Log.debug(f"Command Output -> {output} {err}, {return_code}")
if return_code != 0:
Log.error(f"Command Output -> {output} {err}, {return_code}")
else:
Log.debug(f"Command Output -> {output} {err}, {return_code}")
return component, return_code
def send(self, producer_id: str, message_type: str, method: str,\
messages: list, timeout=0.1):
"""
Sends list of messages to Kafka cluster(s).
Parameters:
producer_id A String that represents Producer client ID.
message_type This is essentially equivalent to the
queue/topic name. For e.g. "Alert"
method Can be set to "sync" or "async"(default).
messages A list of messages sent to Kafka Message Server
"""
Log.debug(f"Producer {producer_id} sending list of messages "\
f"{messages} of message type {message_type} to kafka server"\
f" with method {method}")
producer = self._clients['producer'][producer_id]
if producer is None:
Log.error(f"MessageBusError: "\
f"{errors.ERR_SERVICE_NOT_INITIALIZED}. Producer: "\
f"{producer_id} is not initialized")
raise MessageBusError(errors.ERR_SERVICE_NOT_INITIALIZED,\
"Producer %s is not initialized", producer_id)
for message in messages:
producer.produce(message_type, bytes(message, 'utf-8'),\
callback=self.delivery_callback)
if method == 'sync':
producer.flush()
else:
producer.poll(timeout=timeout)
Log.debug("Successfully Sent list of messages to Kafka cluster")
def _validate_kafka_installation():
"""Validates kafka is installed and kafka user and group are present."""
# check kafka package installed
try:
PkgV().validate('rpms', ['kafka'])
except Exception as e:
Log.error(f"Kafka rpm missing: {e}")
raise KafkaSetupError(e.rc, e)
# check kafak user exists
try:
kafka_user = get_user_by_name('kafka')
kafka_group = get_group_by_name('kafka')
if kafka_group.gr_gid != kafka_user.pw_gid:
raise Exception
except Exception as e:
Log.error(f"Kafka user/group missing: {e}")
# create kafka user and group
cmds = [
"adduser kafka", "usermod -aG wheel kafka",
"groupadd --force kafka",
"usermod --append --groups kafka kafka"
]
Log.info("Creating Kafka user and group")
for cmd in cmds:
_, err, rc = SimpleProcess(cmd).run()
# rc 9 if kafka user already exists & 12 if kafka user created
if rc not in (0, 9, 12):
Log.debug(f"Failed in running command :{cmd}")
Log.error(f"Failed in creating kafka user/group:{err}")
raise KafkaSetupError(rc,\
"Failed in creating kafka user and group", err)
def deregister_message_type(self, admin_id: str, message_types: list):
"""
Deletes a list of message types.
Parameters:
admin_id A String that represents Admin client ID.
message_types This is essentially equivalent to the list of
queue/topic name. For e.g. ["Alert"]
"""
Log.debug(f"Deregister message type {message_types} using {admin_id}")
admin = self._clients['admin'][admin_id]
deleted_message_types = admin.delete_topics(message_types)
self._task_status(deleted_message_types,\
method='deregister_message_type')
for each_message_type in message_types:
for list_retry in range(1, self._max_list_message_type_count + 2):
if each_message_type in list(self._get_metadata(admin).keys()):
if list_retry > self._max_list_message_type_count:
Log.error(f"MessageBusError: Timed out after "\
f"{list_retry} retry to delete message_type "\
f"{each_message_type}")
raise MessageBusError(errno.ETIMEDOUT,\
"Timed out after %d retry to delete message_type" +\
"%s.", list_retry, each_message_type)
time.sleep(list_retry * 1)
continue
else:
break
def get_children(self, element: str, element_id: str, **kwargs) -> dict:
"""
Get children of element.
Args:
element (str): [description]
Returns:
dict: Map of children and ids: {component: {component_type:{component_ids:{}}}}
"""
# TODO: update code to get com_type, currently assuming comp = com_type
children_ids: list = []
children: list = HealthHierarchy.get_next_components(element)
if len(children) == 0:
return {}
key = ElementHealthEvaluator.prepare_key(element,
comp_id=element_id,
**kwargs)
key = key.replace("/health", "").replace("/", "", 1)
data = self.healthmanager.get_key(key, just_value=False)
for element in data.keys():
key_list = element.split("/")
if children[0] in key_list:
child_index = key_list.index(children[0])
element_id = key_list[child_index + 1]
if element_id not in children_ids:
children_ids.append(key_list[child_index + 1])
Log.debug(f"Children for {element}:{element_id} are {children_ids}")
#{component: {component_type: [component_ids]}}}
return {children[0]: {children[0]: children_ids}}
def parse_event(self, msg: str) -> HealthEvent:
"""
Parse event.
Args:
msg (str): Msg
"""
try:
alert = json.loads(msg).get(ALERT_ATTRIBUTES.MESSAGE)
event = {
event_attr.EVENT_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.ALERT_ID],
event_attr.EVENT_TYPE : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.ALERT_TYPE],
event_attr.SEVERITY : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.SEVERITY],
event_attr.SITE_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.SITE_ID],
event_attr.RACK_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.RACK_ID],
event_attr.CLUSTER_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.CLUSTER_ID],
event_attr.STORAGESET_ID : "TBD",
event_attr.NODE_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.NODE_ID],
event_attr.HOST_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.HOST_ID],
event_attr.RESOURCE_TYPE : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.RESOURCE_TYPE],
event_attr.TIMESTAMP : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.EVENT_TIME],
event_attr.RESOURCE_ID : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.INFO][ALERT_ATTRIBUTES.RESOURCE_ID],
event_attr.SPECIFIC_INFO : alert[ALERT_ATTRIBUTES.SENSOR_RESPONSE_TYPE][ALERT_ATTRIBUTES.SPECIFIC_INFO]
}
Log.debug(f"Parsed {event} schema")
health_event = HealthEvent.dict_to_object(event)
Log.info(f"Event {event[event_attr.EVENT_ID]} is parsed and converted to object.")
return health_event
except Exception as e:
raise EventParserException(f"Failed to parse alert. Message: {msg}, Error: {e}")
def _monitor_action(self, callback_ack, state, **args):
"""
Return action on status
"""
Log.debug(str(args))
if args[const.CURRENT_NODE_STATUS] == Action.FAILED and args[const.OTHER_NODE_STATUS] == Action.FAILED:
return const.OCF_SUCCESS
elif args[const.CURRENT_NODE_STATUS] == Action.FAILED:
return const.OCF_ERR_GENERIC
elif args[const.CURRENT_NODE_STATUS] == Action.OK:
return const.OCF_SUCCESS
elif args[const.CURRENT_NODE_STATUS] == Action.RESOLVED:
Log.info(f"Ack for {args[const.FILENAME_KEY]} with key {args[const.PATH_KEY]}"
f" node {args[const.CURRENT_NODE]}")
return callback_ack(args[const.PATH_KEY]+'_'+args[const.CURRENT_NODE])
elif args[const.CURRENT_NODE_STATUS] == Action.RESTART:
Log.info(f"Restart action taken for {args[const.FILENAME_KEY]} on {args[const.CURRENT_NODE]}")
if state == const.STATE_START:
return const.OCF_SUCCESS
elif state == const.STATE_RUNNING:
return const.OCF_ERR_GENERIC
elif state == const.STATE_STOP:
callback_ack(args[const.PATH_KEY]+'_'+args[const.CURRENT_NODE])
Log.info(f"Ack for {args[const.FILENAME_KEY]} with key {args[const.PATH_KEY]} "
f" node {args[const.CURRENT_NODE]}")
return Action.RESTART
return const.OCF_SUCCESS
else:
Log.error(f"Unimplemented value for status {args[const.CURRENT_NODE_STATUS]}")
return const.OCF_ERR_UNIMPLEMENTED
def _exc_components_cmd(commands: List, bundle_id: str, path: str,
component: str, node_name: str, comment: str):
"""
Executes the Command for Bundle Generation of Every Component.
:param commands: Command of the component :type:str
:param bundle_id: Unique Bundle ID of the generation process. :type:str
:param path: Path to create the tar by components :type:str
:param component: Name of Component to be executed :type: str
:param node_name:Name of Node where the Command is being Executed
:type:str
:param comment: :User Comment: type:str
:return:
"""
for command in commands:
Log.info(f"Executing command -> {command} {bundle_id} {path}")
cmd_proc = SimpleProcess(f"{command} {bundle_id} {path}")
output, err, return_code = cmd_proc.run()
Log.debug(f"Command Output -> {output} {err}, {return_code}")
if return_code != 0:
Log.error(f"Command Output -> {output} {err}, {return_code}")
ComponentsBundle._publish_log(
f"Bundle generation failed for '{component}'", ERROR,
bundle_id, node_name, comment)
else:
ComponentsBundle._publish_log(
f"Bundle generation started for '{component}'", INFO,
bundle_id, node_name, comment)
def main(resource, action=''):
try:
if action == 'meta-data':
return resource.metadata()
Conf.load(const.HA_GLOBAL_INDEX, Yaml(const.HA_CONFIG_FILE))
log_path = Conf.get(const.HA_GLOBAL_INDEX, f"LOG{_DELIM}path")
log_level = Conf.get(const.HA_GLOBAL_INDEX, f"LOG{_DELIM}level")
Log.init(service_name='resource_agent', log_path=log_path, level=log_level)
with open(const.RESOURCE_SCHEMA, 'r') as f:
resource_schema = json.load(f)
os.makedirs(const.RA_LOG_DIR, exist_ok=True)
resource_agent = resource(DecisionMonitor(), resource_schema)
Log.debug(f"{resource_agent} initialized for action {action}")
if action == 'monitor':
return resource_agent.monitor()
elif action == 'start':
return resource_agent.start()
elif action == 'stop':
return resource_agent.stop()
else:
print('Usage %s [monitor] [start] [stop] [meta-data]' % sys.argv[0])
exit()
except Exception as e:
Log.error(f"{traceback.format_exc()}")
return const.OCF_ERR_GENERIC
def process_message(self, message: str):
"""Callback method for MessageConsumer"""
Log.debug(f'Received the message from message bus: {message}')
try:
EventAnalyzer(message.decode('utf-8'))
return CONSUMER_STATUS.SUCCESS
except ConsulException as e:
Log.error(f"consule exception {e} {traceback.format_exc()} for {message}. Ack Message.")
return CONSUMER_STATUS.SUCCESS
except ConfError as e:
Log.error(f"config exception {e} {traceback.format_exc()} for {message}. Ack Message.")
return CONSUMER_STATUS.SUCCESS
except EventFilterException as e:
Log.error(f"Filter exception {e} {traceback.format_exc()} for {message}. Ack Message.")
return CONSUMER_STATUS.SUCCESS
except EventParserException as e:
Log.error(f"Parser exception {e} {traceback.format_exc()} for {message}. Ack Message.")
return CONSUMER_STATUS.SUCCESS
except SubscriberException as e:
Log.error(f"Subscriber exception {e} {traceback.format_exc()} for {message}, retry without ack.")
return CONSUMER_STATUS.SUCCESS
except Exception as e:
Log.error(f"Unknown Exception caught {e} {traceback.format_exc()}")
Log.error(f"Forcefully ack as success. msg: {message}")
return CONSUMER_STATUS.SUCCESS
def main(resource: DynamicFidServiceRA, action: str = '') -> int:
"""
Main function acts as switch case for DynamicFidServiceRA resource agent.
Args:
resource (DynamicFidServiceRA): Resource agent
action (str): Resource agent action called by Pacemaker. Defaults to ''.
Returns:
int: Provide output as int code provided by pacemaker.
"""
try:
if action == "meta-data":
return resource.metadata()
ConfigManager.init("resource_agent")
Log.debug(f"{resource} initialized for action {action}")
if action == "monitor":
return resource_agent.monitor()
elif action == "start":
return resource_agent.start()
elif action == "stop":
return resource_agent.stop()
else:
print(f"Usage {sys.argv[0]} [monitor] [start] [stop] [meta-data]")
exit(0)
except Exception as e:
Log.error(
f"systemd_fid_wrapper_ra failed to perform {action}. Error: {e}")
return const.OCF_ERR_GENERIC
def remove_node(self, node):
"""
Remove node from pcs cluster
"""
# TODO: Limitation for node remove (in cluster node cannot remove it self)
# Check if node already removed
_output, _err, _rc = self._execute.run_cmd(const.PCS_STATUS)
Log.info(
f"Cluster status output before remove node: {_output}, {_err}, {_rc}"
)
_rc, status = self.node_status(node)
if _rc != 1:
self._execute.run_cmd(f"pcs cluster node remove {node} --force")
_rc, status = self.node_status(node)
Log.debug(f"For node {node} status: {status}, rc: {_rc}")
if _rc != 1:
Log.error(f"Failed to remove {node}")
raise Exception(f"Failed to remove {node}")
else:
Log.info(f"Node {node} removed from cluster")
else:
Log.info(f"Node {node} already removed from cluster")
_output, _err, _rc = self._execute.run_cmd(const.PCS_STATUS)
Log.info(
f"Cluster status output after remove node: {_output}, {_err}, {_rc}"
)
def _load_rules(self):
"""
Reads the json structured rule data from the file, and returns it.
in dict format.
"""
rules_data = None
try:
if self._rule_file is None:
return None
Log.debug(
f"Loading rules json into memory. File: {self._rule_file}")
with open(self._rule_file, 'r') as fp:
rules_data = fp.read()
if rules_data:
rules_json = JsonMessage(rules_data)
self._rules_schema = rules_json.load()
except OSError as os_error:
if os_error.errno == errno.ENOENT:
Log.error(f'File {self._rule_file} does not exist')
elif os_error.errno == errno.EACCES:
Log.error(
f'Not enough permission to read {self._rule_file} file')
else:
Log.error(f'Error while reading from file {self._rule_file}')
def parse_event(self, msg: str) -> HealthEvent:
"""
Parse event.
Args:
msg (str): Msg
"""
try:
message = json.dumps(ast.literal_eval(msg))
cluster_resource_alert = json.loads(message)
timestamp = str(int(time.time()))
event_id = timestamp + str(uuid.uuid4().hex)
node_id = cluster_resource_alert["_resource_name"]
resource_type = cluster_resource_alert["_resource_type"]
event_type = cluster_resource_alert["_event_type"]
timestamp = cluster_resource_alert["_timestamp"]
generation_id = cluster_resource_alert["_generation_id"]
event = {
EVENT_ATTRIBUTES.EVENT_ID:
event_id,
EVENT_ATTRIBUTES.EVENT_TYPE:
event_type,
EVENT_ATTRIBUTES.SEVERITY:
StatusMapper.EVENT_TO_SEVERITY_MAPPING[event_type],
EVENT_ATTRIBUTES.SITE_ID:
self.site_id, # TODO: Should be fetched from confstore
EVENT_ATTRIBUTES.RACK_ID:
self.rack_id, # TODO: Should be fetched from confstore
EVENT_ATTRIBUTES.CLUSTER_ID:
self.cluster_id, # TODO: Should be fetched from confstore
EVENT_ATTRIBUTES.STORAGESET_ID:
node_id,
EVENT_ATTRIBUTES.NODE_ID:
node_id,
EVENT_ATTRIBUTES.HOST_ID:
node_id,
EVENT_ATTRIBUTES.RESOURCE_TYPE:
resource_type,
EVENT_ATTRIBUTES.TIMESTAMP:
timestamp,
EVENT_ATTRIBUTES.RESOURCE_ID:
node_id,
EVENT_ATTRIBUTES.SPECIFIC_INFO: {
"generation_id": generation_id,
"pod_restart": 0
}
}
Log.debug(f"Parsed {event} schema")
health_event = HealthEvent.dict_to_object(event)
Log.debug(
f"Event {event[EVENT_ATTRIBUTES.EVENT_ID]} is parsed and converted to object."
)
return health_event
except Exception as err:
raise EventParserException(
f"Failed to parse cluster resource alert. Message: {msg}, Error: {err}"
)