import json
import os
from pathlib import Path
from queue import Queue
from random import random
from time import sleep, time
from typing import Optional, Union, Dict, List
import itertools
import threading
from multiprocessing import Lock
from numpy.random import choice
from clearml import Task, Model
from clearml.storage.util import hash_dict
from .preprocess_service import BasePreprocessRequest
from .endpoints import ModelEndpoint, ModelMonitoring, CanaryEP, EndpointMetricLogging
class FastWriteCounter(object):
def __init__(self):
self._counter_inc = itertools.count()
self._counter_dec = itertools.count()
def inc(self):
next(self._counter_inc)
def dec(self):
next(self._counter_dec)
def value(self):
return next(self._counter_inc) - next(self._counter_dec)
class ModelRequestProcessor(object):
_system_tag = "serving-control-plane"
_kafka_topic = "clearml_inference_stats"
_config_key_serving_base_url = "serving_base_url"
_config_key_triton_grpc = "triton_grpc_server"
_config_key_kafka_stats = "kafka_service_server"
_config_key_def_metric_freq = "metric_logging_freq"
def __init__(
self,
task_id: Optional[str] = None,
update_lock_guard: Optional[Lock] = None,
name: Optional[str] = None,
project: Optional[str] = None,
tags: Optional[List[str]] = None,
force_create: bool = False,
) -> None:
"""
:param task_id: Optional specify existing Task ID of the ServingService
:param update_lock_guard: If provided use external (usually multi-process) lock guard for updates
:param name: Optional name current serving service
:param project: Optional select project for the current serving service
:param tags: Optional add tags to the serving service
:param force_create: force_create if provided, ignore task_id and create a new serving Task
"""
self._task = self._create_task(name=name, project=project, tags=tags) \
if force_create else self._get_control_plane_task(task_id=task_id, name=name, project=project, tags=tags)
self._endpoints = dict() # type: Dict[str, ModelEndpoint]
self._model_monitoring = dict() # type: Dict[str, ModelMonitoring]
self._model_monitoring_versions = dict() # type: Dict[str, Dict[int, str]]
self._model_monitoring_endpoints = dict() # type: Dict[str, ModelEndpoint]
self._model_monitoring_update_request = True
# Dict[base_serve_url, Dict[version, model_id]]
self._canary_endpoints = dict() # type: Dict[str, CanaryEP]
self._canary_route = dict() # type: Dict[str, dict]
self._engine_processor_lookup = dict() # type: Dict[str, BasePreprocessRequest]
self._metric_logging = dict() # type: Dict[str, EndpointMetricLogging]
self._endpoint_metric_logging = dict() # type: Dict[str, EndpointMetricLogging]
self._last_update_hash = None
self._sync_daemon_thread = None
self._stats_sending_thread = None
self._stats_queue = Queue()
# this is used for Fast locking mechanisms (so we do not actually need to use Locks)
self._update_lock_flag = False
self._request_processing_state = FastWriteCounter()
self._update_lock_guard = update_lock_guard or threading.Lock()
self._instance_task = None
# serving server config
self._configuration = {}
# deserialized values go here
self._kafka_stats_url = None
self._triton_grpc = None
self._serving_base_url = None
self._metric_log_freq = None
def process_request(self, base_url: str, version: str, request_body: dict) -> dict:
"""
Process request coming in,
Raise Value error if url does not match existing endpoints
"""
self._request_processing_state.inc()
# check if we need to stall
if self._update_lock_flag:
self._request_processing_state.dec()
while self._update_lock_flag:
sleep(1)
# retry to process
return self.process_request(base_url=base_url, version=version, request_body=request_body)
try:
# normalize url and version
url = self._normalize_endpoint_url(base_url, version)
# check canary
canary_url = self._process_canary(base_url=url)
if canary_url:
url = canary_url
ep = self._endpoints.get(url, None) or self._model_monitoring_endpoints.get(url, None)
if not ep:
raise ValueError("Model inference endpoint '{}' not found".format(url))
processor = self._engine_processor_lookup.get(url)
if not processor:
processor_cls = BasePreprocessRequest.get_engine_cls(ep.engine_type)
processor = processor_cls(model_endpoint=ep, task=self._task)
self._engine_processor_lookup[url] = processor
return_value = self._process_request(processor=processor, url=url, body=request_body)
finally:
self._request_processing_state.dec()
return return_value
def _process_canary(self, base_url: str) -> Optional[dict]:
canary = self._canary_route.get(base_url)
if not canary:
return None
# random choice
draw = choice(canary['endpoints'], 1, p=canary['weights'])
# the new endpoint to use
return draw[0]
def configure(
self,
external_serving_base_url: Optional[str] = None,
external_triton_grpc_server: Optional[str] = None,
external_kafka_service_server: Optional[str] = None,
default_metric_log_freq: Optional[float] = None,
):
"""
Set ModelRequestProcessor configuration arguments.
:param external_serving_base_url: Set the external base http endpoint for the serving service
This URL will be passed to user custom preprocess class,
allowing it to concatenate and combine multiple model requests into one
:param external_triton_grpc_server: set the external grpc tcp port of the Nvidia Triton clearml container.
Used by the clearml triton engine class to send inference requests
:param external_kafka_service_server: Optional, Kafka endpoint for the statistics controller collection.
:param default_metric_log_freq: Default request metric logging (0 to 1.0, 1. means 100% of requests are logged)
"""
if external_serving_base_url is not None:
self._task.set_parameter(
name="General/{}".format(self._config_key_serving_base_url),
value=str(external_serving_base_url),
value_type="str",
description="external base http endpoint for the serving service"
)
if external_triton_grpc_server is not None:
self._task.set_parameter(
name="General/{}".format(self._config_key_triton_grpc),
value=str(external_triton_grpc_server),
value_type="str",
description="external grpc tcp port of the Nvidia Triton ClearML container running"
)
if external_kafka_service_server is not None:
self._task.set_parameter(
name="General/{}".format(self._config_key_kafka_stats),
value=str(external_kafka_service_server),
value_type="str",
description="external Kafka service url for the statistics controller server"
)
if default_metric_log_freq is not None:
self._task.set_parameter(
name="General/{}".format(self._config_key_def_metric_freq),
value=str(default_metric_log_freq),
value_type="float",
description="Request metric logging frequency"
)
def get_configuration(self) -> dict:
return dict(**self._configuration)
def add_endpoint(
self,
endpoint: Union[ModelEndpoint, dict],
preprocess_code: Optional[str] = None,
model_name: Optional[str] = None,
model_project: Optional[str] = None,
model_tags: Optional[List[str]] = None,
model_published: Optional[bool] = None,
) -> str:
"""
Return the unique name of the endpoint (endpoint + version)
Overwrite existing endpoint if already exists (outputs a warning)
:param endpoint: New endpoint to register (overwrite existing endpoint if exists)
:param preprocess_code: If provided upload local code as artifact
:param model_name: If model-id not provided on, search based on model name
:param model_project: If model-id not provided on, search based on model project
:param model_tags: If model-id not provided on, search based on model tags
:param model_published: If model-id not provided on, search based on model published state
"""
if not isinstance(endpoint, ModelEndpoint):
endpoint = ModelEndpoint(**endpoint)
# make sure we have everything configured
self._validate_model(endpoint)
url = self._normalize_endpoint_url(endpoint.serving_url, endpoint.version)
if url in self._endpoints:
print("Warning: Model endpoint \'{}\' overwritten".format(url))
if not endpoint.model_id and any([model_project, model_name, model_tags]):
model_query = dict(
project_name=model_project,
model_name=model_name,
tags=model_tags,
only_published=bool(model_published),
include_archived=False,
)
models = Model.query_models(max_results=2, **model_query)
if not models:
raise ValueError("Could not fine any Model to serve {}".format(model_query))
if len(models) > 1:
print("Warning: Found multiple Models for \'{}\', selecting id={}".format(model_query, models[0].id))
endpoint.model_id = models[0].id
elif not endpoint.model_id:
print("Warning: No Model provided for \'{}\'".format(url))
# upload as new artifact
if preprocess_code:
if not Path(preprocess_code).exists():
raise ValueError("Preprocessing code \'{}\' could not be found".format(preprocess_code))
preprocess_artifact_name = "py_code_{}".format(url.replace("/", "_"))
self._task.upload_artifact(
name=preprocess_artifact_name, artifact_object=Path(preprocess_code), wait_on_upload=True)
endpoint.preprocess_artifact = preprocess_artifact_name
self._endpoints[url] = endpoint
return url
def add_model_monitoring(
self,
monitoring: Union[ModelMonitoring, dict],
preprocess_code: Optional[str] = None,
) -> str:
"""
Return the unique name of the endpoint (endpoint + version)
Overwrite existing endpoint if already exists (outputs a warning)
:param monitoring: Model endpoint monitor (overwrite existing endpoint if exists)
:param preprocess_code: If provided upload local code as artifact
:return: Unique model monitoring ID (base_model_url)
"""
if not isinstance(monitoring, ModelMonitoring):
monitoring = ModelMonitoring(**monitoring)
# make sure we actually have something to monitor
if not any([monitoring.monitor_project, monitoring.monitor_name, monitoring.monitor_tags]):
raise ValueError("Model monitoring requires at least a "
"project / name / tag to monitor, none were provided.")
# make sure we have everything configured
self._validate_model(monitoring)
name = monitoring.base_serving_url
if name in self._model_monitoring:
print("Warning: Model monitoring \'{}\' overwritten".format(name))
# upload as new artifact
if preprocess_code:
if not Path(preprocess_code).exists():
raise ValueError("Preprocessing code \'{}\' could not be found".format(preprocess_code))
preprocess_artifact_name = "py_code_{}".format(name.replace("/", "_"))
self._task.upload_artifact(
name=preprocess_artifact_name, artifact_object=Path(preprocess_code), wait_on_upload=True)
monitoring.preprocess_artifact = preprocess_artifact_name
self._model_monitoring[name] = monitoring
return name
def remove_model_monitoring(self, model_base_url: str) -> bool:
"""
Remove model monitoring, use base_model_url as unique identifier
"""
if model_base_url not in self._model_monitoring:
return False
self._model_monitoring.pop(model_base_url, None)
return True
def remove_endpoint(self, endpoint_url: str, version: Optional[str] = None) -> bool:
"""
Remove specific model endpoint, use base_model_url as unique identifier
"""
endpoint_url = self._normalize_endpoint_url(endpoint_url, version)
if endpoint_url not in self._endpoints:
return False
self._endpoints.pop(endpoint_url, None)
return True
def add_canary_endpoint(
self,
canary: Union[CanaryEP, dict],
) -> str:
"""
Return the unique name of the endpoint (endpoint + version)
Overwrite existing endpoint if already exists (outputs a warning)
:param canary: Canary endpoint router (overwrite existing endpoint if exists)
:return: Unique canary ID (base_model_url)
"""
if not isinstance(canary, CanaryEP):
canary = CanaryEP(**canary)
if canary.load_endpoints and canary.load_endpoint_prefix:
raise ValueError(
"Could not add canary endpoint with both "
"prefix ({}) and fixed set of endpoints ({})".format(
canary.load_endpoints, canary.load_endpoint_prefix))
name = canary.endpoint
if name in self._canary_endpoints:
print("Warning: Model monitoring \'{}\' overwritten".format(name))
self._canary_endpoints[name] = canary
return name
def remove_canary_endpoint(self, endpoint_url: str) -> bool:
"""
Remove specific canary model endpoint, use base_model_url as unique identifier
"""
if endpoint_url not in self._canary_endpoints:
return False
self._canary_endpoints.pop(endpoint_url, None)
return True
def add_metric_logging(self, metric: Union[EndpointMetricLogging, dict]) -> bool:
"""
Add metric logging to a specific endpoint
Valid metric variable are any variables on the request or response dictionary,
or a custom preprocess reported variable
When overwriting and existing monitored variable, output a warning.
:param metric: Metric variable to monitor
:return: True if successful
"""
if not isinstance(metric, EndpointMetricLogging):
metric = EndpointMetricLogging(**metric)
name = str(metric.endpoint).strip("/")
metric.endpoint = name
if name not in self._endpoints and not name.endswith('*'):
raise ValueError("Metric logging \'{}\' references a nonexistent endpoint".format(name))
if name in self._metric_logging:
print("Warning: Metric logging \'{}\' overwritten".format(name))
self._metric_logging[name] = metric
return True
def remove_metric_logging(
self,
endpoint: str,
variable_name: str = None,
) -> bool:
"""
Remove existing logged metric variable. Use variable name and endpoint as unique identifier
:param endpoint: Endpoint name (including version, e.g. "model/1" or "model/*")
:param variable_name: Variable name (str), pass None to remove the entire endpoint logging
:return: True if successful
"""
name = str(endpoint).strip("/")
if name not in self._metric_logging or \
(variable_name and variable_name not in self._metric_logging[name].metrics):
return False
if not variable_name:
self._metric_logging.pop(name, None)
else:
self._metric_logging[name].metrics.pop(variable_name, None)
return True
def list_metric_logging(self) -> Dict[str, EndpointMetricLogging]:
"""
List existing logged metric variables.
:return: Dictionary, key='endpoint/version' value=EndpointMetricLogging
"""
return dict(**self._metric_logging)
def list_endpoint_logging(self) -> Dict[str, EndpointMetricLogging]:
"""
List endpoints (fully synced) current metric logging state.
:return: Dictionary, key='endpoint/version' value=EndpointMetricLogging
"""
return dict(**self._endpoint_metric_logging)
def deserialize(
self,
task: Task = None,
prefetch_artifacts: bool = False,
skip_sync: bool = False,
update_current_task: bool = True
) -> bool:
"""
Restore ModelRequestProcessor state from Task
return True if actually needed serialization, False nothing changed
:param task: Load data from Task
:param prefetch_artifacts: If True prefetch artifacts requested by the endpoints
:param skip_sync: If True do not update the canary/monitoring state
:param update_current_task: is not skip_sync, and is True,
update the current Task with the configuration synced from the serving service Task
"""
if not task:
task = self._task
configuration = task.get_parameters_as_dict().get("General") or {}
endpoints = task.get_configuration_object_as_dict(name='endpoints') or {}
canary_ep = task.get_configuration_object_as_dict(name='canary') or {}
model_monitoring = task.get_configuration_object_as_dict(name='model_monitoring') or {}
metric_logging = task.get_configuration_object_as_dict(name='metric_logging') or {}
hashed_conf = hash_dict(
dict(endpoints=endpoints,
canary_ep=canary_ep,
model_monitoring=model_monitoring,
metric_logging=metric_logging,
configuration=configuration)
)
if self._last_update_hash == hashed_conf and not self._model_monitoring_update_request:
return False
print("Info: syncing model endpoint configuration, state hash={}".format(hashed_conf))
self._last_update_hash = hashed_conf
endpoints = {
k: ModelEndpoint(**{i: j for i, j in v.items() if hasattr(ModelEndpoint.__attrs_attrs__, i)})
for k, v in endpoints.items()
}
model_monitoring = {
k: ModelMonitoring(**{i: j for i, j in v.items() if hasattr(ModelMonitoring.__attrs_attrs__, i)})
for k, v in model_monitoring.items()
}
canary_endpoints = {
k: CanaryEP(**{i: j for i, j in v.items() if hasattr(CanaryEP.__attrs_attrs__, i)})
for k, v in canary_ep.items()
}
metric_logging = {
k: EndpointMetricLogging(**{i: j for i, j in v.items() if hasattr(EndpointMetricLogging.__attrs_attrs__, i)})
for k, v in metric_logging.items()
}
# if there is no need to sync Canary and Models we can just leave
if skip_sync:
self._endpoints = endpoints
self._model_monitoring = model_monitoring
self._canary_endpoints = canary_endpoints
self._metric_logging = metric_logging
self._deserialize_conf_dict(configuration)
return True
# make sure we only have one stall request at any given moment
with self._update_lock_guard:
# download artifacts
# todo: separate into two, download before lock, and overwrite inside lock
if prefetch_artifacts:
for item in list(endpoints.values()) + list(model_monitoring.values()):
if item.preprocess_artifact:
# noinspection PyBroadException
try:
self._task.artifacts[item.preprocess_artifact].get_local_copy(
extract_archive=True,
)
except Exception:
pass
# stall all requests
self._update_lock_flag = True
# wait until we have no request processed
while self._request_processing_state.value() != 0:
sleep(1)
self._endpoints = endpoints
self._model_monitoring = model_monitoring
self._canary_endpoints = canary_endpoints
self._metric_logging = metric_logging
self._deserialize_conf_dict(configuration)
# if we have models we need to sync, now is the time
self._sync_monitored_models()
self._update_canary_lookup()
self._sync_metric_logging()
# release stall lock
self._update_lock_flag = False
# update the state on the inference task
if update_current_task and Task.current_task() and Task.current_task().id != self._task.id:
self.serialize(task=Task.current_task())
return True
def serialize(self, task: Optional[Task] = None) -> None:
"""
Store ModelRequestProcessor state into Task
"""
if not task:
task = self._task
config_dict = {k: v.as_dict(remove_null_entries=True) for k, v in self._endpoints.items()}
task.set_configuration_object(name='endpoints', config_dict=config_dict)
config_dict = {k: v.as_dict(remove_null_entries=True) for k, v in self._canary_endpoints.items()}
task.set_configuration_object(name='canary', config_dict=config_dict)
config_dict = {k: v.as_dict(remove_null_entries=True) for k, v in self._model_monitoring.items()}
task.set_configuration_object(name='model_monitoring', config_dict=config_dict)
config_dict = {k: v.as_dict(remove_null_entries=True) for k, v in self._metric_logging.items()}
task.set_configuration_object(name='metric_logging', config_dict=config_dict)
def _update_canary_lookup(self):
canary_route = {}
for k, v in self._canary_endpoints.items():
if v.load_endpoint_prefix and v.load_endpoints:
print("Warning: Canary has both prefix and fixed endpoints, ignoring canary endpoint")
continue
if v.load_endpoints:
if len(v.load_endpoints) != len(v.weights):
print("Warning: Canary \'{}\' weights [{}] do not match number of endpoints [{}], skipping!".format(
k, v.weights, v.load_endpoints))
continue
endpoints = []
weights = []
for w, ep in zip(v.weights, v.load_endpoints):
if ep not in self._endpoints and ep not in self._model_monitoring_endpoints:
print("Warning: Canary \'{}\' endpoint \'{}\' could not be found, skipping".format(k, ep))
continue
endpoints.append(ep)
weights.append(float(w))
# normalize weights
sum_weights = sum(weights)
weights = [w/sum_weights for w in weights]
canary_route[k] = dict(endpoints=endpoints, weights=weights)
elif v.load_endpoint_prefix:
endpoints = [ep for ep in list(self._endpoints.keys()) + list(self._model_monitoring_endpoints.keys())
if str(ep).startswith(v.load_endpoint_prefix)]
endpoints = sorted(
endpoints,
reverse=True,
key=lambda x: '{}/{:0>9}'.format('/'.join(x.split('/')[:-1]), x.split('/')[-1]) if '/' in x else x
)
endpoints = endpoints[:len(v.weights)]
weights = v.weights[:len(endpoints)]
# normalize weights
sum_weights = sum(weights)
weights = [w/sum_weights for w in weights]
canary_route[k] = dict(endpoints=endpoints, weights=weights)
self._report_text(
"Info: Canary endpoint \'{}\' selected [{}]".format(k, canary_route[k])
)
# update back
self._canary_route = canary_route
def _sync_monitored_models(self, force: bool = False) -> bool:
if not force and not self._model_monitoring_update_request:
return False
dirty = False
for serving_base_url, versions_model_id_dict in self._model_monitoring_versions.items():
# find existing endpoint versions
for ep_base_url in list(self._model_monitoring_endpoints.keys()):
# skip over endpoints that are not our own
if not ep_base_url.startswith(serving_base_url+"/"):
continue
# find endpoint version
_, version = ep_base_url.split("/", 1)
if int(version) not in versions_model_id_dict:
# remove old endpoint
self._model_monitoring_endpoints.pop(ep_base_url, None)
dirty = True
continue
# add new endpoint
for version, model_id in versions_model_id_dict.items():
url = "{}/{}".format(serving_base_url, version)
if url in self._model_monitoring_endpoints:
continue
model = self._model_monitoring.get(serving_base_url)
if not model:
# this should never happen
continue
ep = ModelEndpoint(
engine_type=model.engine_type,
serving_url=serving_base_url,
model_id=model_id,
version=str(version),
preprocess_artifact=model.preprocess_artifact,
input_size=model.input_size,
input_type=model.input_type,
output_size=model.output_size,
output_type=model.output_type
)
self._model_monitoring_endpoints[url] = ep
dirty = True
# filter out old model monitoring endpoints
for ep_url in list(self._model_monitoring_endpoints.keys()):
if not any(True for url in self._model_monitoring_versions if ep_url.startswith(url+"/")):
self._model_monitoring_endpoints.pop(ep_url, None)
dirty = True
# reset flag
self._model_monitoring_update_request = False
if dirty:
config_dict = {k: v.as_dict(remove_null_entries=True) for k, v in self._model_monitoring_endpoints.items()}
self._task.set_configuration_object(name='model_monitoring_eps', config_dict=config_dict)
return dirty
def _update_monitored_models(self):
for model in self._model_monitoring.values():
current_served_models = self._model_monitoring_versions.get(model.base_serving_url, {})
# To Do: sort by updated time ?
models = Model.query_models(
project_name=model.monitor_project or None,
model_name=model.monitor_name or None,
tags=model.monitor_tags or None,
only_published=model.only_published,
max_results=model.max_versions,
include_archived=False,
)
# check what we already have:
current_model_id_version_lookup = dict(
zip(list(current_served_models.values()), list(current_served_models.keys()))
)
versions = sorted(current_served_models.keys(), reverse=True)
# notice, most updated model first
# first select only the new models
model_ids = [m.id for m in models]
# we want last updated model to be last (so it gets the highest version number)
max_v = 1 + (versions[0] if versions else 0)
versions_model_ids = []
for m_id in reversed(model_ids):
v = current_model_id_version_lookup.get(m_id)
if v is None:
v = max_v
max_v += 1
versions_model_ids.append((v, m_id))
# remove extra entries (old models)
versions_model_ids_dict = dict(versions_model_ids[:model.max_versions])
# mark dirty if something changed:
if versions_model_ids_dict != current_served_models:
self._model_monitoring_update_request = True
# update model serving state
self._model_monitoring_versions[model.base_serving_url] = versions_model_ids_dict
if not self._model_monitoring_update_request:
return False
self._report_text("INFO: Monitored Models updated: {}".format(
json.dumps(self._model_monitoring_versions, indent=2))
)
return True
def _sync_metric_logging(self, force: bool = False) -> bool:
if not force and not self._metric_logging:
return False
fixed_metric_endpoint = {
k: v for k, v in self._metric_logging.items() if "*/" not in k
}
prefix_metric_endpoint = {k.split("*/")[0]: v for k, v in self._metric_logging.items() if "*/" in k}
endpoint_metric_logging = {}
for k, ep in list(self._endpoints.items()) + list(self._model_monitoring_endpoints.items()):
if k in fixed_metric_endpoint:
if k not in endpoint_metric_logging:
endpoint_metric_logging[k] = fixed_metric_endpoint[k]
continue
for p, v in prefix_metric_endpoint.items():
if k.startswith(p):
if k not in endpoint_metric_logging:
endpoint_metric_logging[k] = v
break
self._endpoint_metric_logging = endpoint_metric_logging
return True
def launch(self, poll_frequency_sec=300):
"""
Launch the background synchronization thread and monitoring thread
(updating runtime process based on changes on the Task, and monitoring model changes in the system)
:param poll_frequency_sec: Sync every X seconds (default 300 seconds)
"""
if self._sync_daemon_thread:
return
# read state
self.deserialize(self._task, prefetch_artifacts=True)
# model monitoring sync
if self._update_monitored_models():
# update endpoints
self.deserialize(self._task, prefetch_artifacts=True)
# get the serving instance (for visibility and monitoring)
self._instance_task = Task.current_task()
# start the background thread
with self._update_lock_guard:
if self._sync_daemon_thread:
return
self._sync_daemon_thread = threading.Thread(
target=self._sync_daemon, args=(poll_frequency_sec, ), daemon=True)
self._stats_sending_thread = threading.Thread(
target=self._stats_send_loop, daemon=True)
self._sync_daemon_thread.start()
self._stats_sending_thread.start()
# we return immediately
def _sync_daemon(self, poll_frequency_sec: float = 300) -> None:
"""
Background thread, syncing model changes into request service.
"""
poll_frequency_sec = float(poll_frequency_sec)
# force mark started on the main serving service task
self._task.mark_started(force=True)
self._report_text("Launching - configuration sync every {} sec".format(poll_frequency_sec))
cleanup = False
self._update_serving_plot()
while True:
try:
# this should be the only place where we call deserialize
self._task.reload()
if self.deserialize(self._task):
self._report_text("New configuration updated")
# mark clean up for next round
cleanup = True
# model monitoring sync
if self._update_monitored_models():
self._report_text("Model monitoring synced")
# update endpoints
self.deserialize(self._task)
# mark clean up for next round
cleanup = True
# update serving layout plot
if cleanup:
self._update_serving_plot()
except Exception as ex:
print("Exception occurred in monitoring thread: {}".format(ex))
sleep(poll_frequency_sec)
try:
# we assume that by now all old deleted endpoints requests already returned
if cleanup:
cleanup = False
for k in list(self._engine_processor_lookup.keys()):
if k not in self._endpoints:
# atomic
self._engine_processor_lookup.pop(k, None)
except Exception as ex:
print("Exception occurred in monitoring thread: {}".format(ex))
def _stats_send_loop(self) -> None:
"""
Background thread for sending stats to Kafka service
"""
if not self._kafka_stats_url:
print("No Kafka Statistics service configured, shutting down statistics report")
return
print("Starting Kafka Statistics reporting: {}".format(self._kafka_stats_url))
from kafka import KafkaProducer # noqa
while True:
try:
producer = KafkaProducer(
bootstrap_servers=self._kafka_stats_url, # ['localhost:9092'],
value_serializer=lambda x: json.dumps(x).encode('utf-8'),
compression_type='lz4', # requires python lz4 package
)
break
except Exception as ex:
print("Error: failed opening Kafka consumer [{}]: {}".format(self._kafka_stats_url, ex))
print("Retrying in 30 seconds")
sleep(30)
while True:
try:
stats_dict = self._stats_queue.get(block=True)
except Exception as ex:
print("Warning: Statistics thread exception: {}".format(ex))
break
# send into kafka service
try:
producer.send(self._kafka_topic, value=stats_dict).get()
except Exception as ex:
print("Warning: Failed to send statistics packet to Kafka service: {}".format(ex))
pass
def get_id(self) -> str:
return self._task.id
def get_endpoints(self) -> Dict[str, ModelEndpoint]:
endpoints = dict(**self._endpoints)
endpoints.update(**self._model_monitoring_endpoints)
return endpoints
def get_synced_endpoints(self) -> Dict[str, ModelEndpoint]:
self._task.reload()
_endpoints = self._task.get_configuration_object_as_dict(name='endpoints') or {}
_monitor_endpoints = self._task.get_configuration_object_as_dict(name='model_monitoring_eps') or {}
endpoints = {
k: ModelEndpoint(**{i: j for i, j in v.items() if hasattr(ModelEndpoint.__attrs_attrs__, i)})
for k, v in _endpoints.items()}
endpoints.update({
k: ModelEndpoint(**{i: j for i, j in v.items() if hasattr(ModelEndpoint.__attrs_attrs__, i)})
for k, v in _monitor_endpoints.items()
})
return endpoints
def get_canary_endpoints(self) -> dict:
return self._canary_endpoints
def get_model_monitoring(self) -> dict:
return self._model_monitoring
def _get_instance_id(self) -> Optional[str]:
return self._instance_task.id if self._instance_task else None
def _report_text(self, text) -> Optional[str]:
return self._task.get_logger().report_text("Instance [{}, pid={}]: {}".format(
self._get_instance_id(), os.getpid(), text))
def _update_serving_plot(self) -> None:
"""
Update the endpoint serving graph on the serving instance Task
"""
if not self._instance_task:
return
# Generate configuration table and details
endpoints = list(self._endpoints.values()) + list(self._model_monitoring_endpoints.values())
if not endpoints:
# clear plot if we had any
return
endpoints = [e.as_dict() for e in endpoints]
table_values = [list(endpoints[0].keys())]
table_values += [[e[c] or "" for c in table_values[0]] for e in endpoints]
self._instance_task.get_logger().report_table(
title='Serving Endpoint Configuration', series='Details', iteration=0, table_plot=table_values,
extra_layout={"title": "Model Endpoints Details"})
# generate current endpoint view
sankey_node = dict(
label=[],
color=[],
customdata=[],
hovertemplate='%{customdata}',
hoverlabel={"align": "left"},
)
sankey_link = dict(
source=[],
target=[],
value=[],
hovertemplate='',
)
# root
sankey_node['color'].append("mediumpurple")
sankey_node['label'].append('{}'.format('external'))
sankey_node['customdata'].append("")
sankey_node_idx = {}
# base_url = self._task._get_app_server() + '/projects/*/models/{model_id}/general'
# draw all static endpoints
# noinspection PyProtectedMember
for i, ep in enumerate(endpoints):
serve_url = ep['serving_url']
full_url = '{}/{}'.format(serve_url, ep['version'] or "")
sankey_node['color'].append("blue")
sankey_node['label'].append("/{}/".format(full_url.strip("/")))
sankey_node['customdata'].append(
"model id: {}".format(ep['model_id'])
)
sankey_link['source'].append(0)
sankey_link['target'].append(i + 1)
sankey_link['value'].append(1. / len(self._endpoints))
sankey_node_idx[full_url] = i + 1
# draw all model monitoring
sankey_node['color'].append("mediumpurple")
sankey_node['label'].append('{}'.format('monitoring models'))
sankey_node['customdata'].append("")
monitoring_root_idx = len(sankey_node['customdata']) - 1
for i, m in enumerate(self._model_monitoring.values()):
serve_url = m.base_serving_url
sankey_node['color'].append("purple")
sankey_node['label'].append('{}'.format(serve_url))
sankey_node['customdata'].append(
"project: {}
name: {}
tags: {}".format(
m.monitor_project or '', m.monitor_name or '', m.monitor_tags or '')
)
sankey_link['source'].append(monitoring_root_idx)
sankey_link['target'].append(monitoring_root_idx + i + 1)
sankey_link['value'].append(1. / len(self._model_monitoring))
# add links to the current models
serve_url = serve_url.rstrip("/") + "/"
for k in sankey_node_idx:
if k.startswith(serve_url):
sankey_link['source'].append(monitoring_root_idx + i + 1)
sankey_link['target'].append(sankey_node_idx[k])
sankey_link['value'].append(1.0 / m.max_versions)
# add canary endpoints
# sankey_node['color'].append("mediumpurple")
# sankey_node['label'].append('{}'.format('Canary endpoints'))
# sankey_node['customdata'].append("")
canary_root_idx = len(sankey_node['customdata']) - 1
# sankey_link['source'].append(0)
# sankey_link['target'].append(canary_root_idx)
# sankey_link['value'].append(1.)
for i, c in enumerate(self._canary_endpoints.values()):
serve_url = c.endpoint
sankey_node['color'].append("green")
sankey_node['label'].append('CANARY: /{}/'.format(serve_url.strip("/")))
sankey_node['customdata'].append(
"outputs: {}".format(
c.load_endpoints or c.load_endpoint_prefix)
)
sankey_link['source'].append(0)
sankey_link['target'].append(canary_root_idx + i + 1)
sankey_link['value'].append(1. / len(self._canary_endpoints))
# add links to the current models
if serve_url not in self._canary_route:
continue
for ep, w in zip(self._canary_route[serve_url]['endpoints'], self._canary_route[serve_url]['weights']):
idx = sankey_node_idx.get(ep)
if idx is None:
continue
sankey_link['source'].append(canary_root_idx + i + 1)
sankey_link['target'].append(idx)
sankey_link['value'].append(w)
# create the sankey graph
dag_flow = dict(
link=sankey_link,
node=sankey_node,
textfont=dict(color='rgba(0,0,0,255)', size=10),
type='sankey',
orientation='h'
)
fig = dict(data=[dag_flow], layout={'xaxis': {'visible': False}, 'yaxis': {'visible': False}})
self._instance_task.get_logger().report_plotly(
title='Serving Endpoints Layout', series='', iteration=0, figure=fig)
def _deserialize_conf_dict(self, configuration: dict) -> None:
self._configuration = configuration
# deserialized values go here
self._kafka_stats_url = \
configuration.get(self._config_key_kafka_stats) or \
os.environ.get("CLEARML_DEFAULT_KAFKA_SERVE_URL")
self._triton_grpc = \
configuration.get(self._config_key_triton_grpc) or \
os.environ.get("CLEARML_DEFAULT_TRITON_GRPC_ADDR")
self._serving_base_url = \
configuration.get(self._config_key_serving_base_url) or \
os.environ.get("CLEARML_DEFAULT_BASE_SERVE_URL")
self._metric_log_freq = \
float(configuration.get(self._config_key_def_metric_freq,
os.environ.get("CLEARML_DEFAULT_METRIC_LOG_FREQ", 1.0)))
# update back configuration
self._configuration[self._config_key_kafka_stats] = self._kafka_stats_url
self._configuration[self._config_key_triton_grpc] = self._triton_grpc
self._configuration[self._config_key_serving_base_url] = self._serving_base_url
self._configuration[self._config_key_def_metric_freq] = self._metric_log_freq
# update preprocessing classes
BasePreprocessRequest.set_server_config(self._configuration)
def _process_request(self, processor: BasePreprocessRequest, url: str, body: dict) -> dict:
# collect statistics for this request
stats = {}
stats_collect_fn = None
collect_stats = False
freq = 1
# decide if we are collecting the stats
metric_endpoint = self._metric_logging.get(url)
if self._kafka_stats_url:
freq = metric_endpoint.log_frequency if metric_endpoint and metric_endpoint.log_frequency is not None \
else self._metric_log_freq
if freq and random() <= freq:
stats_collect_fn = stats.update
collect_stats = True
tic = time()
preprocessed = processor.preprocess(body, stats_collect_fn)
processed = processor.process(preprocessed, stats_collect_fn)
return_value = processor.postprocess(processed, stats_collect_fn)
tic = time() - tic
if collect_stats:
# 10th of a millisecond should be enough
stats['_latency'] = round(tic, 4)
stats['_count'] = int(1.0/freq)
stats['_url'] = url
# collect inputs
if metric_endpoint and body:
for k, v in body.items():
if k in metric_endpoint.metrics:
stats[k] = v
# collect outputs
if metric_endpoint and return_value:
for k, v in return_value.items():
if k in metric_endpoint.metrics:
stats[k] = v
# send stats in background, push it into a thread queue
# noinspection PyBroadException
try:
self._stats_queue.put(stats, block=False)
except Exception:
pass
return return_value
@classmethod
def list_control_plane_tasks(
cls,
task_id: Optional[str] = None,
name: Optional[str] = None,
project: Optional[str] = None,
tags: Optional[List[str]] = None
) -> List[dict]:
# noinspection PyProtectedMember
tasks = Task.query_tasks(
task_name=name or None,
project_name=project or None,
tags=tags or None,
additional_return_fields=["id", "name", "project", "tags"],
task_filter={'type': ['service'],
'status': ["created", "in_progress"],
'system_tags': [cls._system_tag]}
) # type: List[dict]
if not tasks:
return []
for t in tasks:
# noinspection PyProtectedMember
t['project'] = Task._get_project_name(t['project'])
return tasks
@classmethod
def _get_control_plane_task(
cls,
task_id: Optional[str] = None,
name: Optional[str] = None,
project: Optional[str] = None,
tags: Optional[List[str]] = None,
disable_change_state: bool = False,
) -> Task:
if task_id:
task = Task.get_task(task_id=task_id)
if not task:
raise ValueError("Could not find Control Task ID={}".format(task_id))
task_status = task.status
if task_status not in ("created", "in_progress",):
if disable_change_state:
raise ValueError(
"Could Control Task ID={} status [{}] "
"is not valid (only 'draft', 'running' are supported)".format(task_id, task_status))
else:
task.mark_started(force=True)
return task
# noinspection PyProtectedMember
tasks = Task.query_tasks(
task_name=name or None,
project_name=project or None,
tags=tags or None,
task_filter={'type': ['service'],
'status': ["created", "in_progress"],
'system_tags': [cls._system_tag]}
)
if not tasks:
raise ValueError("Could not find any valid Control Tasks")
if len(tasks) > 1:
print("Warning: more than one valid Controller Tasks found, using Task ID={}".format(tasks[0]))
return Task.get_task(task_id=tasks[0])
@classmethod
def _create_task(
cls,
name: Optional[str] = None,
project: Optional[str] = None,
tags: Optional[List[str]] = None
) -> Task:
task = Task.create(
project_name=project or "DevOps",
task_name=name or "Serving Service",
task_type="service",
)
task.set_system_tags([cls._system_tag])
if tags:
task.set_tags(tags)
return task
@classmethod
def _normalize_endpoint_url(cls, endpoint: str, version: Optional[str] = None) -> str:
return "{}/{}".format(endpoint.rstrip("/"), version or "").rstrip("/")
@classmethod
def _validate_model(cls, endpoint: Union[ModelEndpoint, ModelMonitoring]) -> bool:
"""
Raise exception if validation fails, otherwise return True
"""
if endpoint.engine_type in ("triton", ):
# verify we have all the info we need
d = endpoint.as_dict()
missing = [
k for k in [
'input_type', 'input_size', 'input_name',
'output_type', 'output_size', 'output_name',
] if not d.get(k)
]
if not endpoint.auxiliary_cfg and missing:
raise ValueError("Triton engine requires input description - missing values in {}".format(missing))
return True