def test_redact_with_pii_and_only_redaction(self):
comprehend_client = MagicMock()
comprehend_client.contains_pii_entities.return_value = [
Document(text="Some Random text", pii_classification={'SSN': 0.53})
]
comprehend_client.detect_pii_documents.return_value = [
Document(text="Some Random text",
pii_classification={'SSN': 0.53},
pii_entities=[{
'Score': 0.534,
'Type': 'SSN',
'BeginOffset': 0,
'EndOffset': 4
}])
]
document = redact("Some Random text",
Segmenter(DOCUMENT_MAX_SIZE_CONTAINS_PII_ENTITIES),
Segmenter(DOCUMENT_MAX_SIZE_DETECT_PII_ENTITIES),
Redactor(RedactionConfig()), comprehend_client,
RedactionConfig(), DEFAULT_LANGUAGE_CODE)
comprehend_client.contains_pii_entities.assert_not_called()
comprehend_client.detect_pii_documents.assert_called_once()
assert document.redacted_text == "**** Random text"
def test_get_interested_pii_true(self):
assert len(
get_interested_pii(
Document(text="Some Random text",
pii_classification={'SSN': 0.534}),
RedactionConfig())) > 0
assert len(
get_interested_pii(
Document(text="Some Random text",
pii_classification={'SSN': 0.734}),
RedactionConfig(pii_entity_types=['SSN'],
confidence_threshold=0.7))) > 0
def test_redact_with_no_pii_and_classification(self):
comprehend_client = MagicMock()
comprehend_client.contains_pii_entities.return_value = [
Document(text="Some Random text", pii_classification={})
]
document = redact("Some Random text",
Segmenter(DOCUMENT_MAX_SIZE_CONTAINS_PII_ENTITIES),
Segmenter(DOCUMENT_MAX_SIZE_DETECT_PII_ENTITIES),
Redactor(RedactionConfig()), comprehend_client,
RedactionConfig(), DEFAULT_LANGUAGE_CODE)
comprehend_client.contains_pii_entities.assert_called_once()
comprehend_client.detect_pii_documents.assert_not_called()
assert document.redacted_text == "Some Random text"
def redact_pii_documents_handler(event, context):
"""Redaction Lambda function handler."""
LOG.info('Received event with requestId: %s', event[REQUEST_ID])
LOG.debug(f'Raw event {event}')
InputEventValidator.validate(event)
invoke_args = json.loads(event[S3OL_CONFIGURATION][PAYLOAD]) if event[S3OL_CONFIGURATION][PAYLOAD] else {}
language_code = invoke_args.get(LANGUAGE_CODE, DEFAULT_LANGUAGE_CODE)
redaction_config = RedactionConfig(**invoke_args)
object_get_context = event[GET_OBJECT_CONTEXT]
s3ol_access_point = event[S3OL_CONFIGURATION][S3OL_ACCESS_POINT_ARN]
s3 = S3Client(s3ol_access_point)
cloud_watch = CloudWatchClient()
comprehend = ComprehendClient(s3ol_access_point=s3ol_access_point, session_id=event[REQUEST_ID], user_agent=DEFAULT_USER_AGENT,
endpoint_url=COMPREHEND_ENDPOINT_URL)
exception_handler = ExceptionHandler(s3)
LOG.debug("Pii Entity Types to be redacted:" + str(redaction_config.pii_entity_types))
processed_document = False
document = Document('')
try:
def time_bound_task():
nonlocal processed_document
nonlocal document
PartialObjectRequestValidator.validate(event)
pii_classification_segmenter = Segmenter(DOCUMENT_MAX_SIZE_CONTAINS_PII_ENTITIES)
pii_redaction_segmenter = Segmenter(DOCUMENT_MAX_SIZE_DETECT_PII_ENTITIES)
redactor = Redactor(redaction_config)
time1 = time.time()
text, http_headers, status_code = s3.download_file_from_presigned_url(object_get_context[INPUT_S3_URL],
event[USER_REQUEST][HEADERS])
time2 = time.time()
LOG.info(f"Downloaded the file in : {(time2 - time1)} seconds")
document = redact(text, pii_classification_segmenter, pii_redaction_segmenter, redactor,
comprehend, redaction_config, language_code)
processed_document = True
time1 = time.time()
LOG.info(f"Pii redaction completed within {(time1 - time2)} seconds. Returning back the response to S3")
redacted_text_bytes = document.redacted_text.encode('utf-8')
http_headers[CONTENT_LENGTH] = len(redacted_text_bytes)
s3.respond_back_with_data(redacted_text_bytes, http_headers, object_get_context[REQUEST_ROUTE],
object_get_context[REQUEST_TOKEN], status_code)
execute_task_with_timeout(context.get_remaining_time_in_millis() - RESERVED_TIME_FOR_CLEANUP, time_bound_task)
except Exception as generated_exception:
exception_handler.handle_exception(generated_exception, object_get_context[REQUEST_ROUTE], object_get_context[REQUEST_TOKEN])
finally:
if PUBLISH_CLOUD_WATCH_METRICS:
pii_entities = get_interested_pii(document, redaction_config)
publish_metrics(cloud_watch, s3, comprehend, processed_document, len(pii_entities) > 0, language_code,
s3ol_access_point, pii_entities)
LOG.info("Responded back to s3 successfully")
def test_redaction_default_redaction_config(self):
text = "Hello Zhang Wei. Your AnyCompany Financial Services, LLC credit card account 1111-0000-1111-0000 has a minimum payment of $24.53"
redactor = Redactor(RedactionConfig())
redacted_text = redactor.redact(text, [{
'Score': 0.234,
'Type': 'NAME',
'BeginOffset': 6,
'EndOffset': 16
}, {
'Score': 0.765,
'Type': 'CREDIT_DEBIT_NUMBER',
'BeginOffset': 77,
'EndOffset': 96
}])
expected_redaction = "Hello Zhang Wei. Your AnyCompany Financial Services, LLC credit card account ******************* has a minimum payment of $24.53"
assert expected_redaction == redacted_text
def test_redaction_with_replace_entity_type(self):
text = "Hello Zhang Wei. Your AnyCompany Financial Services, LLC credit card account 1111-0000-1111-0000 has a minimum payment of $24.53"
redactor = Redactor(
RedactionConfig(pii_entity_types=['NAME'],
mask_mode=REPLACE_WITH_PII_ENTITY_TYPE,
confidence_threshold=0.6))
redacted_text = redactor.redact(text, [{
'Score': 0.634,
'Type': 'NAME',
'BeginOffset': 6,
'EndOffset': 15
}, {
'Score': 0.765,
'Type': 'CREDIT_DEBIT_NUMBER',
'BeginOffset': 77,
'EndOffset': 96
}])
expected_redaction = "Hello [NAME]. Your AnyCompany Financial Services, LLC credit card account 1111-0000-1111-0000 has a minimum payment of $24.53"
assert expected_redaction == redacted_text
def test_redaction_with_no_entities(self):
text = "Hello Zhang Wei. Your AnyCompany Financial Services, LLC credit card account 1111-0000-1111-0000 has a minimum payment of $24.53"
redactor = Redactor(RedactionConfig())
redacted_text = redactor.redact(text, [])
assert text == redacted_text