yangaws commented on a change in pull request #4091: [AIRFLOW-2524] Update
SageMaker hook, operator and sensor for training, tuning and transform
URL: https://github.com/apache/incubator-airflow/pull/4091#discussion_r229897042
##########
File path: airflow/contrib/hooks/sagemaker_hook.py
##########
@@ -16,299 +16,793 @@
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
-import copy
+import tarfile
+import tempfile
import time
+import os
+import collections
+import functools
+from datetime import datetime
+
+import botocore.config
from botocore.exceptions import ClientError
from airflow.exceptions import AirflowException
from airflow.contrib.hooks.aws_hook import AwsHook
from airflow.hooks.S3_hook import S3Hook
+class LogState(object):
+ STARTING = 1
+ WAIT_IN_PROGRESS = 2
+ TAILING = 3
+ JOB_COMPLETE = 4
+ COMPLETE = 5
+
+
+# Position is a tuple that includes the last read timestamp and the number of
items that were read
+# at that time. This is used to figure out which event to start with on the
next read.
+Position = collections.namedtuple('Position', ['timestamp', 'skip'])
+
+
+def argmin(arr, f):
+ """Return the index, i, in arr that minimizes f(arr[i])"""
+ m = None
+ i = None
+ for idx, item in enumerate(arr):
+ if item is not None:
+ if m is None or f(item) < m:
+ m = f(item)
+ i = idx
+ return i
+
+
+def some(arr):
+ """Return True iff there is an element, a, of arr such that a is not
None"""
+ return functools.reduce(lambda x, y: x or (y is not None), arr, False)
+
+
+def secondary_training_status_changed(current_job_description,
prev_job_description):
+ """
+ Returns true if training job's secondary status message has changed.
+
+ :param current_job_description: Current job description, returned from
DescribeTrainingJob call.
+ :type current_job_description: dict
+ :param prev_job_description: Previous job description, returned from
DescribeTrainingJob call.
+ :type prev_job_description: dict
+
+ :return: Whether the secondary status message of a training job changed or
not.
+ """
+ current_secondary_status_transitions =
current_job_description.get('SecondaryStatusTransitions')
+ if current_secondary_status_transitions is None or
len(current_secondary_status_transitions) == 0:
+ return False
+
+ prev_job_secondary_status_transitions =
prev_job_description.get('SecondaryStatusTransitions') \
+ if prev_job_description is not None else None
+
+ last_message = prev_job_secondary_status_transitions[-1]['StatusMessage'] \
+ if prev_job_secondary_status_transitions is not None \
+ and len(prev_job_secondary_status_transitions) > 0 else ''
+
+ message =
current_job_description['SecondaryStatusTransitions'][-1]['StatusMessage']
+
+ return message != last_message
+
+
+def secondary_training_status_message(job_description, prev_description):
+ """
+ Returns a string contains start time and the secondary training job status
message.
+
+ :param job_description: Returned response from DescribeTrainingJob call
+ :type job_description: dict
+ :param prev_description: Previous job description from DescribeTrainingJob
call
+ :type prev_description: dict
+
+ :return: Job status string to be printed.
+ """
+
+ if job_description is None or
job_description.get('SecondaryStatusTransitions') is None\
+ or len(job_description.get('SecondaryStatusTransitions')) == 0:
+ return ''
+
+ prev_description_secondary_transitions =
prev_description.get('SecondaryStatusTransitions')\
+ if prev_description is not None else None
+ prev_transitions_num = len(prev_description['SecondaryStatusTransitions'])\
+ if prev_description_secondary_transitions is not None else 0
+ current_transitions = job_description['SecondaryStatusTransitions']
+
+ transitions_to_print = current_transitions[-1:] if
len(current_transitions) == prev_transitions_num else \
+ current_transitions[prev_transitions_num - len(current_transitions):]
+
+ status_strs = []
+ for transition in transitions_to_print:
+ message = transition['StatusMessage']
+ time_str = datetime.utcfromtimestamp(
+
time.mktime(job_description['LastModifiedTime'].timetuple())).strftime('%Y-%m-%d
%H:%M:%S')
+ status_strs.append('{} {} - {}'.format(time_str, transition['Status'],
message))
+
+ return '\n'.join(status_strs)
+
+
class SageMakerHook(AwsHook):
"""
Interact with Amazon SageMaker.
- sagemaker_conn_id is required for using
- the config stored in db for training/tuning
"""
- non_terminal_states = {'InProgress', 'Stopping', 'Stopped'}
+ non_terminal_states = {'InProgress', 'Stopping'}
+ endpoint_non_terminal_states = {'Creating', 'Updating', 'SystemUpdating',
+ 'RollingBack', 'Deleting'}
failed_states = {'Failed'}
def __init__(self,
- sagemaker_conn_id=None,
- use_db_config=False,
- region_name=None,
- check_interval=5,
- max_ingestion_time=None,
*args, **kwargs):
super(SageMakerHook, self).__init__(*args, **kwargs)
- self.sagemaker_conn_id = sagemaker_conn_id
- self.use_db_config = use_db_config
- self.region_name = region_name
- self.check_interval = check_interval
- self.max_ingestion_time = max_ingestion_time
- self.conn = self.get_conn()
+ self.s3_hook = S3Hook(aws_conn_id=self.aws_conn_id)
+
+ def expand_role(self, role):
+ """
+ Expand an IAM role name to an IAM role ARN. If role is already an IAM
ARN,
+ no change is made.
+
+ :param role: IAM role name or ARN
+ :return: IAM role ARN
+ """
+ if '/' in role:
+ return role
+ else:
+ return self.get_iam_conn().get_role(RoleName=role)['Role']['Arn']
+
+ def tar_and_s3_upload(self, path, key, bucket):
+ """
+ Tar the local file or directory and upload to s3
- def check_for_url(self, s3url):
+ :param path: local file or directory
+ :type path: str
+ :param key: s3 key
+ :type key: str
+ :param bucket: s3 bucket
+ :type bucket: str
+ :return: None
+ """
+ with tempfile.TemporaryFile() as temp_file:
+ if os.path.isdir(path):
+ files = [os.path.join(path, name) for name in os.listdir(path)]
+ else:
+ files = [path]
+ with tarfile.open(mode='w:gz', fileobj=temp_file) as tar_file:
+ for f in files:
+ tar_file.add(f, arcname=os.path.basename(f))
+ temp_file.seek(0)
+ self.s3_hook.load_file_obj(temp_file, key, bucket, True)
+
+ def configure_s3_resources(self, config):
+ """
+ Extract the S3 operations from the configuration and execute them.
+
+ :param config: config of SageMaker operation
+ :type config: dict
+ :return: dict
"""
- check if the s3url exists
+ s3_operations = config.pop('S3Operations', None)
+
+ if s3_operations is not None:
+ create_bucket_ops = s3_operations.get('S3CreateBucket')
+ upload_ops = s3_operations.get('S3Upload')
+ if create_bucket_ops:
+ for op in create_bucket_ops:
+ self.s3_hook.create_bucket(bucket_name=op['Bucket'])
+ if upload_ops:
+ for op in upload_ops:
+ if op['Tar']:
+ self.tar_and_s3_upload(op['Path'], op['Key'],
+ op['Bucket'])
+ else:
+ self.s3_hook.load_file(op['Path'], op['Key'],
+ op['Bucket'])
+
+ return config
+
+ def check_s3_url(self, s3url):
+ """
+ Check if an S3 URL exists
+
:param s3url: S3 url
:type s3url:str
:return: bool
"""
bucket, key = S3Hook.parse_s3_url(s3url)
- s3hook = S3Hook(aws_conn_id=self.aws_conn_id)
- if not s3hook.check_for_bucket(bucket_name=bucket):
+ if not self.s3_hook.check_for_bucket(bucket_name=bucket):
raise AirflowException(
"The input S3 Bucket {} does not exist ".format(bucket))
- if key and not s3hook.check_for_key(key=key, bucket_name=bucket)\
- and not s3hook.check_for_prefix(
+ if key and not self.s3_hook.check_for_key(key=key, bucket_name=bucket)\
+ and not self.s3_hook.check_for_prefix(
prefix=key, bucket_name=bucket, delimiter='/'):
# check if s3 key exists in the case user provides a single file
- # or if s3 prefix exists in the case user provides a prefix for
files
+ # or if s3 prefix exists in the case user provides multiple files
in
+ # a prefix
raise AirflowException("The input S3 Key "
"or Prefix {} does not exist in the Bucket
{}"
.format(s3url, bucket))
return True
- def check_valid_training_input(self, training_config):
+ def check_training_config(self, training_config):
"""
- Run checks before a training starts
+ Check if a training configuration is valid
+
:param training_config: training_config
:type training_config: dict
:return: None
"""
for channel in training_config['InputDataConfig']:
- self.check_for_url(channel['DataSource']
- ['S3DataSource']['S3Uri'])
+ self.check_s3_url(channel['DataSource']
+ ['S3DataSource']['S3Uri'])
- def check_valid_tuning_input(self, tuning_config):
+ def check_tuning_config(self, tuning_config):
"""
- Run checks before a tuning job starts
+ Check if a tuning configuration is valid
+
:param tuning_config: tuning_config
:type tuning_config: dict
:return: None
"""
for channel in
tuning_config['TrainingJobDefinition']['InputDataConfig']:
- self.check_for_url(channel['DataSource']
- ['S3DataSource']['S3Uri'])
+ self.check_s3_url(channel['DataSource']
+ ['S3DataSource']['S3Uri'])
- def check_status(self, non_terminal_states,
- failed_state, key,
- describe_function, *args):
- """
- :param non_terminal_states: the set of non_terminal states
- :type non_terminal_states: set
- :param failed_state: the set of failed states
- :type failed_state: set
- :param key: the key of the response dict
- that points to the state
- :type key: str
- :param describe_function: the function used to retrieve the status
- :type describe_function: python callable
- :param args: the arguments for the function
- :return: None
+ def get_conn(self):
"""
- sec = 0
- running = True
-
- while running:
+ Establish an AWS connection for SageMaker
- sec = sec + self.check_interval
-
- if self.max_ingestion_time and sec > self.max_ingestion_time:
- # ensure that the job gets killed if the max ingestion time is
exceeded
- raise AirflowException("SageMaker job took more than "
- "%s seconds", self.max_ingestion_time)
-
- time.sleep(self.check_interval)
- try:
- response = describe_function(*args)
- status = response[key]
- self.log.info("Job still running for %s seconds... "
- "current status is %s" % (sec, status))
- except KeyError:
- raise AirflowException("Could not get status of the SageMaker
job")
- except ClientError:
- raise AirflowException("AWS request failed, check log for more
info")
+ :return: a boto3 SageMaker client
+ """
+ return self.get_client_type('sagemaker')
- if status in non_terminal_states:
- running = True
- elif status in failed_state:
- raise AirflowException("SageMaker job failed because %s"
- % response['FailureReason'])
- else:
- running = False
+ def get_log_conn(self):
+ """
+ Establish an AWS connection for retrieving logs during training
- self.log.info('SageMaker Job Compeleted')
+ :return: a boto3 CloudWatchLog client
+ """
+ config = botocore.config.Config(retries={'max_attempts': 15})
+ return self.get_client_type('logs', config=config)
- def get_conn(self):
+ def get_iam_conn(self):
"""
- Establish an AWS connection
- :return: a boto3 SageMaker client
+ Establish an AWS connection for retrieving IAM roles during training
+
+ :return: a boto3 IAM client
"""
- return self.get_client_type('sagemaker', region_name=self.region_name)
+ return self.get_client_type('iam')
- def list_training_job(self, name_contains=None, status_equals=None):
+ def log_stream(self, log_group, stream_name, start_time=0, skip=0):
"""
- List the training jobs associated with the given input
- :param name_contains: A string in the training job name
- :type name_contains: str
- :param status_equals: 'InProgress'|'Completed'
- |'Failed'|'Stopping'|'Stopped'
- :return:dict
+ A generator for log items in a single stream. This will yield all the
+ items that are available at the current moment.
+
+ :param log_group: The name of the log group.
+ :type log_group: str
+ :param stream_name: The name of the specific stream.
+ :type stream_name: str
+ :param start_time: The time stamp value to start reading the logs from
(default: 0).
+ :type start_time: int
+ :param skip: The number of log entries to skip at the start (default:
0).
+ This is for when there are multiple entries at the same timestamp.
+ :type skip: int
+ :return:A CloudWatch log event with the following key-value pairs:
+ 'timestamp' (int): The time of the event.
+ 'message' (str): The log event data.
+ 'ingestionTime' (int): The time the event was ingested.
"""
- return self.conn.list_training_jobs(
- NameContains=name_contains, StatusEquals=status_equals)
- def list_tuning_job(self, name_contains=None, status_equals=None):
+ next_token = None
+
+ event_count = 1
+ while event_count > 0:
+ if next_token is not None:
+ token_arg = {'nextToken': next_token}
+ else:
+ token_arg = {}
+
+ response =
self.get_log_conn().get_log_events(logGroupName=log_group,
+
logStreamName=stream_name,
+ startTime=start_time,
+ startFromHead=True,
+ **token_arg)
Review comment:
Hence I guess I don't need to change these codes although I don't like them
:) compared to a paginator.
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