lemur/lemur/plugins/lemur_aws/sns.py

79 lines
2.8 KiB
Python

"""
.. module: lemur.plugins.lemur_aws.sts
:platform: Unix
:copyright: (c) 2020 by Netflix Inc., see AUTHORS for more
:license: Apache, see LICENSE for more details.
.. moduleauthor:: Jasmine Schladen <jschladen@netflix.com>
"""
import json
import arrow
import boto3
from flask import current_app
from lemur.plugins.bases import ExpirationNotificationPlugin
def publish(topic_arn, certificates, notification_type, options, **kwargs):
sns_client = boto3.client("sns", **kwargs)
message_ids = {}
subject = "Lemur: {0} Notification".format(notification_type.capitalize())
for certificate in certificates:
message_ids[certificate["name"]] = publish_single(sns_client, topic_arn, certificate, notification_type,
subject, options)
return message_ids
def publish_single(sns_client, topic_arn, certificate, notification_type, subject, options):
response = sns_client.publish(
TopicArn=topic_arn,
Message=format_message(certificate, notification_type, options),
Subject=subject,
)
response_code = response["ResponseMetadata"]["HTTPStatusCode"]
if response_code != 200:
raise Exception(f"Failed to publish {notification_type} notification to SNS topic {topic_arn}. "
f"SNS response: {response_code} {response}")
current_app.logger.info(f"AWS SNS message published to topic [{topic_arn}] with message ID {response['MessageId']}")
current_app.logger.debug(f"AWS SNS message published to topic [{topic_arn}]: [{response}]")
return response["MessageId"]
def create_certificate_url(name):
return "https://{hostname}/#/certificates/{name}".format(
hostname=current_app.config.get("LEMUR_HOSTNAME"), name=name
)
def format_message(certificate, notification_type, options):
json_message = {
"notification_type": notification_type,
"certificate_name": certificate["name"],
"issuer": certificate["issuer"],
"id": certificate["id"],
"expires": arrow.get(certificate["validityEnd"]).format("YYYY-MM-DDTHH:mm:ss"), # 2047-12-31T22:00:00
"endpoints_detected": len(certificate["endpoints"]),
"owner": certificate["owner"],
"details": create_certificate_url(certificate["name"])
}
if notification_type == "expiration":
json_message["notification_interval_days"] = calculate_expiration_days(options)
return json.dumps(json_message)
def calculate_expiration_days(options):
unit = ExpirationNotificationPlugin.get_option("unit", options)
interval = ExpirationNotificationPlugin.get_option("interval", options)
if unit == "weeks":
return interval * 7
elif unit == "months":
return interval * 30
elif unit == "days":
return interval