Light Refactor and Clean-up AWS Provider

airflow/providers/amazon/aws/hooks/athena.py

@@ -91,8 +91,7 @@ def run_query(
         if client_request_token:
             params['ClientRequestToken'] = client_request_token
         response = self.get_conn().start_query_execution(**params)
-        query_execution_id = response['QueryExecutionId']
-        return query_execution_id
+        return response['QueryExecutionId']
 
     def check_query_status(self, query_execution_id: str) -> Optional[str]:
         """

airflow/providers/amazon/aws/hooks/glue.py

@@ -118,8 +118,8 @@ def initialize_job(
 
         try:
             job_name = self.get_or_create_glue_job()
-            job_run = glue_client.start_job_run(JobName=job_name, Arguments=script_arguments, **run_kwargs)
-            return job_run
+            return glue_client.start_job_run(JobName=job_name, Arguments=script_arguments, **run_kwargs)
+
         except Exception as general_error:
             self.log.error("Failed to run aws glue job, error: %s", general_error)
             raise
@@ -134,8 +134,7 @@ def get_job_state(self, job_name: str, run_id: str) -> str:
         """
         glue_client = self.get_conn()
         job_run = glue_client.get_job_run(JobName=job_name, RunId=run_id, PredecessorsIncluded=True)
-        job_run_state = job_run['JobRun']['JobRunState']
-        return job_run_state
+        return job_run['JobRun']['JobRunState']
 
     def job_completion(self, job_name: str, run_id: str) -> Dict[str, str]:
         """
@@ -155,7 +154,7 @@ def job_completion(self, job_name: str, run_id: str) -> Dict[str, str]:
                 self.log.info("Exiting Job %s Run State: %s", run_id, job_run_state)
                 return {'JobRunState': job_run_state, 'JobRunId': run_id}
             if job_run_state in failed_states:
-                job_error_message = "Exiting Job " + run_id + " Run State: " + job_run_state
+                job_error_message = f"Exiting Job {run_id} Run State: {job_run_state}"
                 self.log.info(job_error_message)
                 raise AirflowException(job_error_message)
             else:

airflow/providers/amazon/aws/hooks/glue_crawler.py

@@ -102,8 +102,7 @@ def create_crawler(self, **crawler_kwargs) -> str:
         """
         crawler_name = crawler_kwargs['Name']
         self.log.info("Creating crawler: %s", crawler_name)
-        crawler = self.glue_client.create_crawler(**crawler_kwargs)
-        return crawler
+        return self.glue_client.create_crawler(**crawler_kwargs)
 
     def start_crawler(self, crawler_name: str) -> dict:
         """
@@ -113,8 +112,7 @@ def start_crawler(self, crawler_name: str) -> dict:
         :return: Empty dictionary
         """
         self.log.info("Starting crawler %s", crawler_name)
-        crawler = self.glue_client.start_crawler(Name=crawler_name)
-        return crawler
+        return self.glue_client.start_crawler(Name=crawler_name)
 
     def wait_for_crawler_completion(self, crawler_name: str, poll_interval: int = 5) -> str:
         """
@@ -137,18 +135,17 @@ def wait_for_crawler_completion(self, crawler_name: str, poll_interval: int = 5)
                 crawler_status = crawler['LastCrawl']['Status']
                 if crawler_status in failed_status:
                     raise AirflowException(f"Status: {crawler_status}")
-                else:
-                    metrics = self.glue_client.get_crawler_metrics(CrawlerNameList=[crawler_name])[
-                        'CrawlerMetricsList'
-                    ][0]
-                    self.log.info("Status: %s", crawler_status)
-                    self.log.info("Last Runtime Duration (seconds): %s", metrics['LastRuntimeSeconds'])
-                    self.log.info("Median Runtime Duration (seconds): %s", metrics['MedianRuntimeSeconds'])
-                    self.log.info("Tables Created: %s", metrics['TablesCreated'])
-                    self.log.info("Tables Updated: %s", metrics['TablesUpdated'])
-                    self.log.info("Tables Deleted: %s", metrics['TablesDeleted'])
-
-                    return crawler_status
+                metrics = self.glue_client.get_crawler_metrics(CrawlerNameList=[crawler_name])[
+                    'CrawlerMetricsList'
+                ][0]
+                self.log.info("Status: %s", crawler_status)
+                self.log.info("Last Runtime Duration (seconds): %s", metrics['LastRuntimeSeconds'])
+                self.log.info("Median Runtime Duration (seconds): %s", metrics['MedianRuntimeSeconds'])
+                self.log.info("Tables Created: %s", metrics['TablesCreated'])
+                self.log.info("Tables Updated: %s", metrics['TablesUpdated'])
+                self.log.info("Tables Deleted: %s", metrics['TablesDeleted'])
+
+                return crawler_status
 
             else:
                 self.log.info("Polling for AWS Glue crawler: %s ", crawler_name)

airflow/providers/amazon/aws/hooks/kinesis.py

@@ -43,9 +43,7 @@ def __init__(self, delivery_stream: str, *args, **kwargs) -> None:
 
     def put_records(self, records: Iterable):
         """Write batch records to Kinesis Firehose"""
-        response = self.get_conn().put_record_batch(DeliveryStreamName=self.delivery_stream, Records=records)
-
-        return response
+        return self.get_conn().put_record_batch(DeliveryStreamName=self.delivery_stream, Records=records)
 
 
 class AwsFirehoseHook(FirehoseHook):

airflow/providers/amazon/aws/hooks/lambda_function.py

@@ -66,8 +66,7 @@ def invoke_lambda(
             "Payload": payload,
             "Qualifier": qualifier,
         }
-        response = self.conn.invoke(**{k: v for k, v in invoke_args.items() if v is not None})
-        return response
+        return self.conn.invoke(**{k: v for k, v in invoke_args.items() if v is not None})
 
     def create_lambda(
         self,
@@ -118,10 +117,9 @@ def create_lambda(
             "CodeSigningConfigArn": code_signing_config_arn,
             "Architectures": architectures,
         }
-        response = self.conn.create_function(
+        return self.conn.create_function(
             **{k: v for k, v in create_function_args.items() if v is not None},
         )
-        return response
 
 
 class AwsLambdaHook(LambdaHook):

airflow/providers/amazon/aws/hooks/redshift_sql.py

@@ -130,6 +130,4 @@ def get_conn(self) -> RedshiftConnection:
         conn_params = self._get_conn_params()
         conn_kwargs_dejson = self.conn.extra_dejson
         conn_kwargs: Dict = {**conn_params, **conn_kwargs_dejson}
-        conn: RedshiftConnection = redshift_connector.connect(**conn_kwargs)
-
-        return conn
+        return redshift_connector.connect(**conn_kwargs)

airflow/providers/amazon/aws/hooks/s3.py

@@ -277,11 +277,10 @@ def list_prefixes(
             Bucket=bucket_name, Prefix=prefix, Delimiter=delimiter, PaginationConfig=config
         )
 
-        prefixes = []
+        prefixes = []  # type: List[str]
         for page in response:
             if 'CommonPrefixes' in page:
-                for common_prefix in page['CommonPrefixes']:
-                    prefixes.append(common_prefix['Prefix'])
+                prefixes.extend(common_prefix['Prefix'] for common_prefix in page['CommonPrefixes'])
 
         return prefixes
 
@@ -366,12 +365,10 @@ def _is_in_period(input_date: datetime) -> bool:
             StartAfter=start_after_key,
         )
 
-        keys = []
+        keys = []  # type: List[str]
         for page in response:
             if 'Contents' in page:
-                for k in page['Contents']:
-                    keys.append(k)
-
+                keys.extend(iter(page['Contents']))
         if self.object_filter_usr is not None:
             return self.object_filter_usr(keys, from_datetime, to_datetime)
 
@@ -604,7 +601,7 @@ def load_file(
             extra_args['ServerSideEncryption'] = "AES256"
         if gzip:
             with open(filename, 'rb') as f_in:
-                filename_gz = f_in.name + '.gz'
+                filename_gz = f'{f_in.name}.gz'
                 with gz.open(filename_gz, 'wb') as f_out:
                     shutil.copyfileobj(f_in, f_out)
                     filename = filename_gz

airflow/providers/amazon/aws/log/s3_task_handler.py

@@ -16,6 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 import os
+import pathlib
 import sys
 
 if sys.version_info >= (3, 8):
@@ -92,8 +93,7 @@ def close(self):
         remote_loc = os.path.join(self.remote_base, self.log_relative_path)
         if os.path.exists(local_loc):
             # read log and remove old logs to get just the latest additions
-            with open(local_loc) as logfile:
-                log = logfile.read()
+            log = pathlib.Path(local_loc).read_text()
             self.s3_write(log, remote_loc)
 
         # Mark closed so we don't double write if close is called twice

airflow/providers/amazon/aws/operators/glacier.py

@@ -51,5 +51,4 @@ def __init__(
 
     def execute(self, context: 'Context'):
         hook = GlacierHook(aws_conn_id=self.aws_conn_id)
-        response = hook.retrieve_inventory(vault_name=self.vault_name)
-        return response
+        return hook.retrieve_inventory(vault_name=self.vault_name)

airflow/providers/amazon/aws/secrets/secrets_manager.py

@@ -134,7 +134,7 @@ def __init__(
         self.profile_name = profile_name
         self.sep = sep
         self.full_url_mode = full_url_mode
-        self.extra_conn_words = extra_conn_words if extra_conn_words else {}
+        self.extra_conn_words = extra_conn_words or {}
         self.kwargs = kwargs
 
     @cached_property
@@ -178,9 +178,7 @@ def get_uri_from_secret(self, secret):
 
         conn_string = "{conn_type}://{user}:{password}@{host}:{port}/{schema}".format(**conn_d)
 
-        connection = self._format_uri_with_extra(secret, conn_string)
-
-        return connection
+        return self._format_uri_with_extra(secret, conn_string)
 
     def get_conn_value(self, conn_id: str):
         """
@@ -193,20 +191,19 @@ def get_conn_value(self, conn_id: str):
 
         if self.full_url_mode:
             return self._get_secret(self.connections_prefix, conn_id)
-        else:
-            try:
-                secret_string = self._get_secret(self.connections_prefix, conn_id)
-                # json.loads gives error
-                secret = ast.literal_eval(secret_string) if secret_string else None
-            except ValueError:  # 'malformed node or string: ' error, for empty conns
-                connection = None
-                secret = None
-
-            # These lines will check if we have with some denomination stored an username, password and host
-            if secret:
-                connection = self.get_uri_from_secret(secret)
-
-            return connection
+        try:
+            secret_string = self._get_secret(self.connections_prefix, conn_id)
+            # json.loads gives error
+            secret = ast.literal_eval(secret_string) if secret_string else None
+        except ValueError:  # 'malformed node or string: ' error, for empty conns
+            connection = None
+            secret = None
+
+        # These lines will check if we have with some denomination stored an username, password and host
+        if secret:
+            connection = self.get_uri_from_secret(secret)
+
+        return connection
 
     def get_conn_uri(self, conn_id: str) -> Optional[str]:
         """

airflow/providers/amazon/aws/secrets/systems_manager.py

@@ -158,8 +158,7 @@ def _get_secret(self, path_prefix: str, secret_id: str) -> Optional[str]:
         ssm_path = self.build_path(path_prefix, secret_id)
         try:
             response = self.client.get_parameter(Name=ssm_path, WithDecryption=True)
-            value = response["Parameter"]["Value"]
-            return value
+            return response["Parameter"]["Value"]
         except self.client.exceptions.ParameterNotFound:
             self.log.debug("Parameter %s not found.", ssm_path)
             return None

airflow/providers/amazon/aws/sensors/emr.py

@@ -66,7 +66,7 @@ def get_hook(self) -> EmrHook:
     def poke(self, context: 'Context'):
         response = self.get_emr_response()
 
-        if not response['ResponseMetadata']['HTTPStatusCode'] == 200:
+        if response['ResponseMetadata']['HTTPStatusCode'] != 200:
             self.log.info('Bad HTTP response: %s', response)
             return False
 

airflow/providers/amazon/aws/sensors/glue.py

@@ -57,7 +57,7 @@ def poke(self, context: 'Context'):
             self.log.info("Exiting Job %s Run State: %s", self.run_id, job_state)
             return True
         elif job_state in self.errored_states:
-            job_error_message = "Exiting Job " + self.run_id + " Run State: " + job_state
+            job_error_message = f"Exiting Job {self.run_id} Run State: {job_state}"
             raise AirflowException(job_error_message)
         else:
             return False

airflow/providers/amazon/aws/sensors/sagemaker.py

@@ -50,7 +50,7 @@ def get_hook(self) -> SageMakerHook:
 
     def poke(self, context: 'Context'):
         response = self.get_sagemaker_response()
-        if not (response['ResponseMetadata']['HTTPStatusCode'] == 200):
+        if response['ResponseMetadata']['HTTPStatusCode'] != 200:
             self.log.info('Bad HTTP response: %s', response)
             return False
         state = self.state_from_response(response)
@@ -225,7 +225,7 @@ def init_log_resource(self, hook: SageMakerHook) -> None:
         self.instance_count = description['ResourceConfig']['InstanceCount']
         status = description['TrainingJobStatus']
         job_already_completed = status not in self.non_terminal_states()
-        self.state = LogState.TAILING if (not job_already_completed) else LogState.COMPLETE
+        self.state = LogState.COMPLETE if job_already_completed else LogState.TAILING
         self.last_description = description
         self.last_describe_job_call = time.monotonic()
         self.log_resource_inited = True

airflow/providers/amazon/aws/transfers/google_api_to_s3.py

@@ -155,13 +155,12 @@ def _retrieve_data_from_google_api(self) -> dict:
             api_version=self.google_api_service_version,
             impersonation_chain=self.google_impersonation_chain,
         )
-        google_api_response = google_discovery_api_hook.query(
+        return google_discovery_api_hook.query(
             endpoint=self.google_api_endpoint_path,
             data=self.google_api_endpoint_params,
             paginate=self.google_api_pagination,
             num_retries=self.google_api_num_retries,
         )
-        return google_api_response
 
     def _load_data_to_s3(self, data: dict) -> None:
         s3_hook = S3Hook(aws_conn_id=self.aws_conn_id)

airflow/providers/amazon/aws/transfers/mysql_to_s3.py

@@ -66,8 +66,7 @@ def __init__(
             if "header" not in pd_kwargs:
                 pd_kwargs["header"] = header
             kwargs["pd_kwargs"] = {**kwargs.get('pd_kwargs', {}), **pd_kwargs}
-        else:
-            if pd_csv_kwargs is not None:
-                raise TypeError("pd_csv_kwargs may not be specified when file_format='parquet'")
+        elif pd_csv_kwargs is not None:
+            raise TypeError("pd_csv_kwargs may not be specified when file_format='parquet'")
 
         super().__init__(sql_conn_id=mysql_conn_id, **kwargs)

airflow/providers/amazon/aws/utils/eks_get_token.py

@@ -17,7 +17,7 @@
 
 import argparse
 import json
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 
 from airflow.providers.amazon.aws.hooks.eks import EksHook
 
@@ -27,7 +27,8 @@
 
 
 def get_expiration_time():
-    token_expiration = datetime.utcnow() + timedelta(minutes=TOKEN_EXPIRATION_MINUTES)
+    token_expiration = datetime.now(timezone.utc) + timedelta(minutes=TOKEN_EXPIRATION_MINUTES)
+
     return token_expiration.strftime('%Y-%m-%dT%H:%M:%SZ')
 
 

tests/providers/amazon/aws/hooks/test_cloud_formation.py

@@ -102,4 +102,4 @@ def test_delete_stack(self):
 
         stacks = self.hook.get_conn().describe_stacks()['Stacks']
         matching_stacks = [x for x in stacks if x['StackName'] == stack_name]
-        assert len(matching_stacks) == 0, f'stack with name {stack_name} should not exist'
+        assert not matching_stacks, f'stack with name {stack_name} should not exist'

tests/providers/amazon/aws/log/test_s3_task_handler.py

@@ -16,6 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 
+import contextlib
 import os
 import unittest
 from unittest import mock
@@ -75,10 +76,8 @@ def setUp(self):
 
     def tearDown(self):
         if self.s3_task_handler.handler:
-            try:
+            with contextlib.suppress(Exception):
                 os.remove(self.s3_task_handler.handler.baseFilename)
-            except Exception:
-                pass
 
     def test_hook(self):
         assert isinstance(self.s3_task_handler.hook, S3Hook)

tests/providers/amazon/aws/operators/test_athena.py

@@ -50,7 +50,8 @@ def setUp(self):
             'start_date': DEFAULT_DATE,
         }
 
-        self.dag = DAG(TEST_DAG_ID + 'test_schedule_dag_once', default_args=args, schedule_interval='@once')
+        self.dag = DAG(f'{TEST_DAG_ID}test_schedule_dag_once', default_args=args, schedule_interval='@once')
+
         self.athena = AthenaOperator(
             task_id='test_athena_operator',
             query='SELECT * FROM TEST_TABLE',

tests/providers/amazon/aws/operators/test_dms_describe_tasks.py

@@ -57,11 +57,7 @@ def setUp(self):
             "start_date": DEFAULT_DATE,
         }
 
-        self.dag = DAG(
-            TEST_DAG_ID + "test_schedule_dag_once",
-            default_args=args,
-            schedule_interval="@once",
-        )
+        self.dag = DAG(f"{TEST_DAG_ID}test_schedule_dag_once", default_args=args, schedule_interval="@once")
 
     def test_init(self):
         dms_operator = DmsDescribeTasksOperator(