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Clear CloudFlare Cache with Lambda
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# Purges all cache in CloudFlare from AWS Lambda | |
# I use this script when GitHub pushes new content to my S3 bucket | |
# Requirements: | |
# * CloudFlare API Global Key saved in the Parameter Store as 'CloudFlare' | |
# * Environment variables: | |
# ** 'email' as your CloudFlare email to use | |
# ** 'cf_api' as your CloudFlare API URL | |
# ** 'topic' as your SNS topic to send notifications | |
# CloudFlare Doc: https://api.cloudflare.com/#zone-purge-all-files | |
################# | |
import json, os, boto3 | |
import traceback | |
import logging | |
from botocore.vendored import requests | |
from boto3.session import Session | |
# Retrieve the CloudFlare API key from Parameter Store in Systems Manager | |
Params_Client = boto3.client('ssm') | |
CLOUDFLARE = Params_Client.get_parameter(Name='CloudFlare',WithDecryption=True)['Parameter']['Value'] | |
#Setup SNS Vars | |
SNS_Client = boto3.client('sns') | |
SNSTopic = os.environ['topic'] | |
# Main Function | |
def lambda_handler(event, context): | |
logger = logging.getLogger() | |
logger.setLevel(logging.INFO) | |
logger.debug(event) | |
codepipeline = boto3.client('codepipeline') | |
job_id = event['CodePipeline.job']['id'] | |
try: | |
logger.info('Clearing CloudFlare cache...') | |
url = os.environ['cf_api'] | |
headers = {"X-Auth-Email":EMAIL,"X-Auth-Key":CLOUDFLARE,"Content-Type":"application/json"} | |
data = '{"purge_everything":true}' | |
r = requests.post(url,headers=headers,data=data) | |
result = r.json() | |
print (result) | |
sendtext("Cache Cleared") | |
response = codepipeline.put_job_success_result(jobId=job_id) | |
logger.debug(response) | |
return result | |
except Exception as error: | |
logger.exception(error) | |
error = traceback.format_exc() | |
print (error) | |
sendtext("Cache Clear Failed:" + error) | |
response = codepipeline.put_job_failure_result(jobId=job_id, failureDetails={'type': 'JobFailed', 'message': str(error)}) | |
logger.debug(response) | |
return error | |
# Send Text | |
def sendtext(message): | |
SNS_Client.publish(TopicArn=SNSTopic,Subject="CloudFlare Cache",Message=message) |
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