def parse_http_response(response: Response, resources_info: Dict, scar_info: Dict) -> None:
'''Process the response generated by an API Gateway invocation.'''
output_type = scar_info.get('cli_output')
function_name = resources_info.get('lambda').get('name')
asynch = resources_info.get('lambda').get('asynchronous')
text_message = ""
if response.ok:
if output_type == OutputType.BINARY.value:
output_file = scar_info.get('output_file', '')
with open(output_file, "wb") as out:
out.write(StrUtils.decode_base64(response.text))
text_message = f"Output saved in file '{output_file}'"
else:
text_message = f"Request Id: {response.headers['amz-lambda-request-id']}"
if asynch:
text_message += f"\nFunction '{function_name}' launched correctly"
else:
text_message += f"\nLog Group Name: {response.headers['amz-log-group-name']}\n"
text_message += f"Log Stream Name: {response.headers['amz-log-stream-name']}\n"
text_message += StrUtils.base64_to_utf8_string(response.text)
else:
if asynch and response.status_code == 502:
text_message = f"Function '{function_name}' launched successfully."
else:
error = json.loads(response.text)
if 'message' in error:
text_message = f"Error ({response.reason}): {error['message']}"
else:
text_message = f"Error ({response.reason}): {error['exception']}"
logger.info(text_message)
def execute_command_with_msg(command: List[str], cmd_wd: Optional[str]=None,
cli_msg: str='') -> str:
"""Execute the specified command and return the result."""
cmd_out = subprocess.check_output(command, cwd=cmd_wd).decode('utf-8')
logger.debug(cmd_out)
logger.info(cli_msg)
return cmd_out[:-1]
def _create_s3_buckets(self, resources_info: Dict) -> None:
if resources_info.get('lambda').get('input', False):
s3_service = S3(resources_info)
for bucket in resources_info.get('lambda').get('input'):
if bucket.get('storage_provider') == 's3':
bucket_name, folders = s3_service.create_bucket_and_folders(
bucket.get('path'))
Lambda(resources_info).link_function_and_bucket(
bucket_name)
s3_service.set_input_bucket_notification(
bucket_name, folders)
if not folders:
logger.info(
f'Input bucket "{bucket_name}" successfully created'
)
if resources_info.get('lambda').get('output', False):
s3_service = S3(resources_info)
for bucket in resources_info.get('lambda').get('output'):
if bucket.get('storage_provider') == 's3':
bucket_name, folders = s3_service.create_bucket_and_folders(
bucket.get('path'))
if not folders:
logger.info(
f'Output bucket "{bucket_name}" successfully created'
)
def parse_http_response(response, function_name, asynch, output_type,
output_file):
if response.ok:
if output_type == OutputType.BINARY:
with open(output_file, "wb") as out:
out.write(StrUtils.decode_base64(response.text))
text_message = f"Output saved in file '{output_file}'"
else:
text_message = f"Request Id: {response.headers['amz-lambda-request-id']}"
if asynch:
text_message += f"\nFunction '{function_name}' launched correctly"
else:
text_message += f"\nLog Group Name: {response.headers['amz-log-group-name']}\n"
text_message += f"Log Stream Name: {response.headers['amz-log-stream-name']}\n"
text_message += json.loads(response.text)["udocker_output"]
else:
if asynch and response.status_code == 502:
text_message = f"Function '{function_name}' launched sucessfully."
else:
error = json.loads(response.text)
if 'message' in error:
text_message = f"Error ({response.reason}): {error['message']}"
else:
text_message = f"Error ({response.reason}): {error['exception']}"
logger.info(text_message)
def delete_ecr_image(resources_info: Dict) -> None:
"""Delete the ECR repository created in _create_ecr_image function."""
ecr_cli = ECR(resources_info)
repo_name = resources_info.get('lambda').get('name')
if ecr_cli.get_repository_uri(repo_name):
logger.info('Deleting ECR repo: %s' % repo_name)
ecr_cli.delete_repository(repo_name)
def _print_generic_response(response,
output_type,
aws_output,
text_message=None,
json_output=None,
verbose_output=None,
output_file=None):
if output_type == OutputType.BINARY.value:
with open(output_file, "wb") as out:
out.write(StrUtils.decode_base64(response['Payload']['body']))
elif output_type == OutputType.PLAIN_TEXT.value:
output = text_message
logger.info(output)
else:
if output_type == OutputType.JSON.value:
output = json_output if json_output else {
aws_output: {
'RequestId':
response['ResponseMetadata']['RequestId'],
'HTTPStatusCode':
response['ResponseMetadata']['HTTPStatusCode']
}
}
elif output_type == OutputType.VERBOSE.value:
output = verbose_output if verbose_output else {
aws_output: response
}
logger.info_json(output)
def log(self):
index = 0
if len(self.aws_resources) > 1:
index = _choose_function(self.aws_resources)
# We only return the logs of one function each time
if index >= 0:
logger.info(CloudWatchLogs(self.aws_resources[index]).get_aws_logs())
def download_file(self, bucket_name, file_key, file_path):
kwargs = {'Bucket': bucket_name, 'Key': file_key}
logger.info(
f"Downloading file '{file_key}' from bucket '{bucket_name}' in path '{file_path}'."
)
with open(file_path, 'wb') as file:
kwargs['Fileobj'] = file
self.client.download_file(**kwargs)
def delete_bucket_notification(self, bucket_name, function_arn):
bucket_conf = self.client.get_notification_configuration(bucket_name)
if bucket_conf and "LambdaFunctionConfigurations" in bucket_conf:
lambda_conf = bucket_conf["LambdaFunctionConfigurations"]
filter_conf = [x for x in lambda_conf if x['LambdaFunctionArn'] != function_arn]
notification = { "LambdaFunctionConfigurations": filter_conf }
self.client.put_notification_configuration(bucket_name, notification)
logger.info("Bucket notifications successfully deleted")
def _delete_job_definitions(self) -> None:
# Get main job definition
kwargs = {"jobDefinitionName": self.function_name}
job_info = self.client.describe_job_definitions(**kwargs)
for job_def in _get_job_definitions(job_info):
kwars = {"jobDefinition": job_def}
self.client.deregister_job_definition(**kwars)
logger.info("Job definitions successfully deleted.")
def _delete_valid_compute_environment(self, state):
if state == "ENABLED":
update_args = {'computeEnvironment': self.function_name,
'state': 'DISABLED'}
self.client.update_compute_environment(**update_args)
elif state == "DISABLED":
delete_args = {'computeEnvironment': self.function_name}
self.client.delete_compute_environment(**delete_args)
logger.info("Compute environment successfully deleted.")
def _delete_valid_job_queue(self, state):
if state == "ENABLED":
updating_args = {'jobQueue': self.function_name,
'state': 'DISABLED'}
self.client.update_job_queue(**updating_args)
elif state == "DISABLED":
deleting_args = {'jobQueue': self.function_name}
self.client.delete_job_queue(**deleting_args)
logger.info("Job queue successfully deleted.")
def _ecr_image_name_prepared(container_info: Dict) -> str:
"""If the user set an already prepared image return the image name."""
image_name = container_info.get('image')
if ":" not in image_name:
image_name = "%s:latest" % image_name
if not container_info.get(
'create_image') and ".dkr.ecr." in image_name:
logger.info('Image already prepared in ECR.')
return image_name
return None
def _delete_valid_compute_environment(self, state, name):
if state == "ENABLED":
update_args = {
'computeEnvironment': self._get_resource_name(name),
'state': 'DISABLED'
}
self.client.update_compute_environment(**update_args)
elif state == "DISABLED":
delete_args = {'computeEnvironment': self._get_resource_name(name)}
logger.info("Compute environment deleted")
self.client.delete_compute_environment(**delete_args)
def _print_generic_response(resources_info: Dict, output_type: int, text_message: str, json_output: Dict) -> None:
# Support 'PLAIN_TEXT', 'JSON' and 'VERBOSE' output types
if output_type == OutputType.PLAIN_TEXT.value:
output = text_message
logger.info(output)
else:
if output_type == OutputType.JSON.value:
output = json_output
elif output_type == OutputType.VERBOSE.value:
output = resources_info
logger.info_json(output)
def _delete_valid_job_queue(self, state, name):
if state == "ENABLED":
updating_args = {
'jobQueue': self._get_resource_name(name),
'state': 'DISABLED'
}
self.client.update_job_queue(**updating_args)
elif state == "DISABLED":
deleting_args = {'jobQueue': self._get_resource_name(name)}
logger.info("Job queue deleted")
self.client.delete_job_queue(**deleting_args)
def ls(self):
# If a bucket is defined, then we list their files
resources_info = self.aws_resources[0]
if resources_info.get('lambda').get('input', False):
file_list = S3(resources_info).get_bucket_file_list()
for file_info in file_list:
logger.info(file_info)
else:
# Return the resources of the region in the scar's configuration file
aws_resources = _get_all_functions(self.aws_resources[0])
response_parser.parse_ls_response(aws_resources, self.scar_info.get('cli_output'))
def _process_input_bucket_calls(self):
s3_file_list = self.aws_s3.get_bucket_file_list()
logger.info(f"Files found: '{s3_file_list}'")
# First do a request response invocation to prepare the lambda environment
if s3_file_list:
s3_event = self.aws_s3.get_s3_event(s3_file_list.pop(0))
self.aws_lambda.launch_request_response_event(s3_event)
# If the list has more elements, invoke functions asynchronously
if s3_file_list:
s3_event_list = self.aws_s3.get_s3_event_list(s3_file_list)
self.aws_lambda.process_asynchronous_lambda_invocations(s3_event_list)
def _add_extra_payload(self) -> None:
if self.resources_info.get('lambda').get('extra_payload', False):
payload_path = self.resources_info.get('lambda').get('extra_payload')
logger.info(f"Adding extra payload '{payload_path}'")
if FileUtils.is_file(payload_path):
FileUtils.copy_file(self.resources_info.get('lambda').get('extra_payload'),
self.tmp_payload_folder.name)
else:
FileUtils.copy_dir(self.resources_info.get('lambda').get('extra_payload'),
self.tmp_payload_folder.name)
del(self.resources_info['lambda']['extra_payload'])
def get_supervisor_layer_arn(self) -> str:
"""Returns the ARN of the specified supervisor layer version.
If the layer or version doesn't exists, creates the layer."""
if self._is_supervisor_created():
is_created = self._is_supervisor_version_created()
if is_created != '':
logger.info(f'Using existent \'{self.layer_name}\' layer.')
return is_created
logger.info((f'Creating lambda layer with \'{self.layer_name}\''
f' version \'{self.supervisor_version}\'.'))
return self._create_layer()
def check_supervisor_version(cls, supervisor_version: str) -> str:
"""Checks if the specified version exists in FaaS Supervisor's GitHub
repository. Returns the version if exists and 'latest' if not."""
if GitHubUtils.exists_release_in_repo(cls._SUPERVISOR_GITHUB_USER,
cls._SUPERVISOR_GITHUB_REPO,
supervisor_version):
return supervisor_version
latest_version = SupervisorUtils.get_latest_release()
if supervisor_version != 'latest':
logger.info('Defined supervisor version does not exists.')
logger.info(f'Using latest supervisor release: \'{latest_version}\'.')
return latest_version
def create_ecr_image(resources_info: Dict, supervisor_version: str) -> str:
"""Creates an ECR image using the user provided image adding the supervisor tools."""
# If the user set an already prepared image return the image name
image_name = ContainerImage._ecr_image_name_prepared(
resources_info.get('lambda').get('container'))
if image_name:
return image_name
tmp_folder = FileUtils.create_tmp_dir()
# Create function config file
FileUtils.write_yaml(
FileUtils.join_paths(tmp_folder.name, "function_config.yaml"),
create_function_config(resources_info))
init_script_path = resources_info.get('lambda').get('init_script')
# Copy the init script defined by the user to the payload folder
if init_script_path:
FileUtils.copy_file(
init_script_path,
FileUtils.join_paths(
tmp_folder.name,
FileUtils.get_file_name(init_script_path)))
# Get supervisor zip
supervisor_zip_path = ContainerImage.get_supervisor_zip(
resources_info, supervisor_version)
# Unzip the supervisor file to the temp file
FileUtils.unzip_folder(supervisor_zip_path, tmp_folder.name)
# Create dockerfile to generate the new ECR image
FileUtils.create_file_with_content(
"%s/Dockerfile" % tmp_folder.name,
ContainerImage._create_dockerfile_ecr_image(
resources_info.get('lambda')))
# Create the ECR Repo and get the image uri
ecr_cli = ECR(resources_info)
repo_name = resources_info.get('lambda').get('name')
ecr_image = ecr_cli.get_repository_uri(repo_name)
if not ecr_image:
logger.info('Creating ECR repository: %s' % repo_name)
ecr_image = ecr_cli.create_repository(repo_name)
# Build and push the image to the ECR repo
platform = None
arch = resources_info.get('lambda').get('architectures', ['x86_64'])[0]
if arch == 'arm64':
platform = 'linux/arm64'
return ContainerImage._build_push_ecr_image(
tmp_folder.name, ecr_image, platform,
ecr_cli.get_authorization_token())
def upload_file(self, folder_name=None, file_path=None, file_key=None):
kwargs = {'Bucket' : self.aws.s3.input_bucket}
kwargs['Key'] = self.get_file_key(folder_name, file_path, file_key)
if file_path:
try:
kwargs['Body'] = FileUtils.read_file(file_path, 'rb')
except FileNotFoundError:
raise excp.UploadFileNotFoundError(file_path=file_path)
if folder_name and not file_path:
logger.info("Folder '{0}' created in bucket '{1}'".format(kwargs['Key'], kwargs['Bucket']))
else:
logger.info("Uploading file '{0}' to bucket '{1}' with key '{2}'".format(file_path, kwargs['Bucket'], kwargs['Key']))
self.client.upload_file(**kwargs)
def create_api_gateway(self) -> None:
"""Creates an Api Gateway endpoint."""
api_info = self.client.create_rest_api(self.aws.api_gateway.name)
self._set_api_gateway_id(api_info)
resource_info = self.client.create_resource(self.aws.api_gateway.id,
self._get_resource_id(),
_DEFAULT_PATH_PART)
self.client.create_method(**self._get_method_args(resource_info))
self.client.set_integration(
**self._get_integration_args(resource_info))
self.client.create_deployment(self.aws.api_gateway.id,
_DEFAULT_STAGE_NAME)
logger.info(f'API Gateway endpoint: {self._get_endpoint()}')
def create_api_gateway(self) -> None:
"""Creates an Api Gateway endpoint."""
api_info = self.client.create_rest_api(self.api.get('name', ''))
self._set_api_gateway_id(api_info)
resource_info = self.client.create_resource(
self.api.get('id', ''), self._get_resource_id(),
self.api.get('path_part', ''))
self._set_resource_info_id(resource_info)
self.client.create_method(**self._get_method_args())
self.client.set_integration(**self._get_integration_args())
self.client.create_deployment(self.api.get('id', ''),
self.api.get('stage_name', ''))
logger.info(f'API Gateway endpoint: {self._get_endpoint()}')
def _process_s3_input_bucket_calls(self, resources_info: Dict, storage: Dict) -> None:
s3_service = S3(resources_info)
lambda_service = Lambda(resources_info)
s3_file_list = s3_service.get_bucket_file_list(storage)
bucket_name, _ = get_bucket_and_folders(storage.get('path'))
logger.info(f"Files found: '{s3_file_list}'")
# First do a request response invocation to prepare the lambda environment
if s3_file_list:
s3_event = s3_service.get_s3_event(bucket_name, s3_file_list.pop(0))
lambda_service.launch_request_response_event(s3_event)
# If the list has more elements, invoke functions asynchronously
if s3_file_list:
s3_event_list = s3_service.get_s3_event_list(bucket_name, s3_file_list)
lambda_service.process_asynchronous_lambda_invocations(s3_event_list)
def _delete_job_definitions(self, name):
job_definitions = []
# Get IO definitions (if any)
kwargs = {"jobDefinitionName": '{0}-io'.format(name)}
io_job_info = self.client.describe_job_definitions(**kwargs)
job_definitions.extend(_get_job_definitions(io_job_info))
# Get main job definition
kwargs = {"jobDefinitionName": name}
job_info = self.client.describe_job_definitions(**kwargs)
job_definitions.extend(_get_job_definitions(job_info))
for job_def in job_definitions:
kwars = {"jobDefinition": job_def}
self.client.deregister_job_definition(**kwars)
logger.info("Job definitions deleted")
def _create_s3_buckets(self, resources_info: Dict) -> None:
if resources_info.get('lambda').get('input', False):
s3_service = S3(resources_info)
for bucket in resources_info.get('lambda').get('input'):
if bucket.get('storage_provider') == 's3':
bucket_name, folders = s3_service.create_bucket_and_folders(
bucket.get('path'))
lambda_client = Lambda(resources_info)
lambda_client.link_function_and_bucket(bucket_name)
# Check if function is already available
logger.info("Wait function to be 'Active'")
if not lambda_client.wait_function_active(
resources_info.get('lambda').get('arn')):
logger.error("Timeout waiting function.")
else:
logger.info("Function 'Active'")
s3_service.set_input_bucket_notification(
bucket_name, folders)
if not folders:
logger.info(
f'Input bucket "{bucket_name}" successfully created'
)
if resources_info.get('lambda').get('output', False):
s3_service = S3(resources_info)
for bucket in resources_info.get('lambda').get('output'):
if bucket.get('storage_provider') == 's3':
bucket_name, folders = s3_service.create_bucket_and_folders(
bucket.get('path'))
if not folders:
logger.info(
f'Output bucket "{bucket_name}" successfully created'
)
def update_function_configuration(self, function_info=None):
if not function_info:
function_info = self.get_function_info()
update_args = {'FunctionName' : function_info['FunctionName'] }
# if hasattr(self.aws.lambdaf, "memory"):
# update_args['MemorySize'] = self.aws.lambdaf.memory
# else:
# update_args['MemorySize'] = function_info['MemorySize']
# if hasattr(self.aws.lambdaf, "time"):
# update_args['Timeout'] = self.aws.lambdaf.time
# else:
# update_args['Timeout'] = function_info['Timeout']
self._update_environment_variables(function_info, update_args)
self._update_supervisor_layer(function_info, update_args)
self.client.update_function_configuration(**update_args)
logger.info("Function '{}' updated successfully.".format(function_info['FunctionName']))
def check_faas_supervisor_layer(self):
"""Checks if the supervisor layer exists, if not, creates the layer.
If the layer exists and it's not updated, updates the layer."""
# Get the layer information
layer_info = self.layer.get_latest_layer_info(
self._SUPERVISOR_LAYER_NAME)
# Compare supervisor versions
if layer_info and 'Description' in layer_info:
# If the supervisor layer version is lower than the passed version,
# we must update the layer
if StrUtils.compare_versions(layer_info.get('Description', ''),
self.supervisor_version) < 0:
self._update_supervisor_layer()
else:
logger.info("Using existent 'faas-supervisor' layer")
else:
# Layer not found, we have to create it
self._create_supervisor_layer()
