/
main.py
159 lines (150 loc) · 7.6 KB
/
main.py
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import os
import logging
import sys
import cfnresponse
import boto3
import uuid
from datetime import datetime
from utils.html_functions import HTML
from utils.ses import SES
from utils.generate_csv import GENCSV
from aws.resources import Resources
from utils.slack_send import Slackalert
from utils.config_parser import parse_config
from utils.config_parser import merges
from utils.config_parser import check_env
from utils.s3_send import uploadDirectory
from utils.filemanager import FileManager
from utils.generate_inv import GENINV
from utils.ses_verification import verify_identity
from botocore.client import Config
from datetime import date
log = logging.getLogger(__name__)
log.setLevel(logging.DEBUG)
def lambda_handler(event=None, context=None):
print("Starting PennyPincher")
default_config = parse_config('./utils/default.yaml')
overwrite_config = parse_config('./config.yaml')
final_config = merges(default_config,overwrite_config)
resource_config = final_config['resources']
env_config = final_config['config']['env']
env_config = check_env(env_config)
channel_name = env_config['channel_name'] #Slack Channel Name
from_address = env_config['from_address'] #SES verified email address from which email is to be sent
to_address = env_config['to_address'] #Email addresses of recipents (Comma Separated)
ses_region = env_config['ses_region'] #Region where SES is configured
reporting_platform = env_config['reporting_platform'] #Email/Slack/Email and Slack
account_name = env_config['account_name']
webhook_url = env_config['webhook_url']
report_bucket = env_config['report_bucket']
#Verifying Identities
if 'email' in reporting_platform.lower().split(','):
email_addresses = to_address.split(',')
email_addresses.append(from_address)
unique_list = set(email_addresses)
email_addresses = (list(unique_list))
response= verify_identity(email_addresses, ses_region)
print(response)
#Report Headerse
headers_inventory = ['ResourceID','ResouceName','ServiceName','Type','VPC',
'State','Region', 'Idle'
]
headers = ['ResourceID','ResouceName','ServiceName','Type','VPC',
'State','Region','Finding','EvaluationPeriod (seconds)','Criteria','Saving($)'
]
#For removing any existing loggers in lambda
root = logging.getLogger()
if root.handlers:
for handler in root.handlers:
root.removeHandler(handler)
#Initilizaing logger for error logging
logging.basicConfig(level=logging.WARNING)
logger = logging.getLogger()
current_dir = os.getcwd()
try:
print(reporting_platform.lower().split(','))
resource = Resources(resource_config, headers, headers_inventory) #Object for generating report
html_obj = HTML() #Object for generating html page
ses_obj = SES(from_address=from_address, to_address=to_address, ses_region=ses_region) #Object to send email
slack_obj = Slackalert(channel=channel_name, webhook_url=webhook_url) #object to send report to slack
print(html_obj)
html, resource_info, total_savings, inventory_info = resource.get_report(html_obj, slack_obj)
print("Total savings: $" + str(round(total_savings, 2)))
current_datetime=datetime.utcnow().isoformat("T","minutes").replace(":", "-")
dir_path=f"/tmp/pennypincher_reports/{current_datetime}"
os.makedirs(dir_path,exist_ok=True)
date_obj = date.today()
date_obj_format = date_obj.strftime("%d %b %Y")
html_path = dir_path+ '/pennypincher_findings.html'
header = '<h3><u><b>' + date_obj_format + ' Savings Report | Total Savings: $'+ str(round(total_savings, 2)) + '</b></u></h3>'
html = header + html
with FileManager(html_path, 'w') as f:
f.write(html)
print("Findings File is at: pennypincher_findings.html")
file_name = "/tmp/pennypincher_reports"
pre_url = ''
if len(resource_info) > 0:
csv_obj = GENCSV(resource_info, total_savings, dir_path, current_datetime)
csv_obj.generate_csv()
print(f"CSV Report is at: {dir_path} directory")
if len(inventory_info) > 0 :
inv_obj = GENINV(inventory_info, dir_path, current_datetime)
inv_obj.generate_inv()
## Sending report in s3
if 's3' in reporting_platform.lower().split(','):
uploadDirectory(dir_path,report_bucket,current_datetime)
s3_signature ={
'v4':'s3v4',
'v2':'s3'
}
session = boto3.Session()
s3Client = session.client("s3",
config=Config(signature_version=s3_signature['v4'])
)
pre_url = s3Client.generate_presigned_url('get_object',
Params={'Bucket': report_bucket,
'Key': current_datetime+"/pennypincher_findings.html"},
ExpiresIn=604800)
if 'email' in reporting_platform.lower().split(','):
ses_obj.ses_sendmail(
sub='Cost Optimization Report | ' + account_name + ' | Total Savings: $'+ str(round(total_savings, 2)), dir_path=dir_path,
tl_saving = str(round(total_savings, 2)), resource_info = resource_info, platform= reporting_platform, current_date = date_obj_format, url=pre_url, bucket_name = report_bucket, region=ses_region)
if 'slack' in reporting_platform.lower().split(','):
print("Sending report to slack .....")
slack_obj.slack_alert(resource_info, str(round(total_savings, 2)),report_bucket, date_obj_format, reporting_platform, pre_url)
return "Success"
except Exception as e:
logger.error("Error on line {} in main.py".format(sys.exc_info()[-1].tb_lineno) +
" | Message: " + str(e))
return "Failed"
def cfnresponsefun(event, context):
'''Redirect to handler func based on RequestType '''
physical_resource_id = event.get('PhysicalResourceId', 'ssm-%s' % uuid.uuid4().hex)
try:
response = None
print(f"Received event: {event}")
if 'RequestType' in event:
if event['RequestType'] == 'Create' or event['RequestType'] == 'Update':
response = lambda_handler()
print(response)
if response == "Success":
cfnresponse.send(event, context, cfnresponse.SUCCESS, {'Status': repr(response)}, physical_resource_id)
else:
cfnresponse.send(event, context,cfnresponse.FAILED, {'Status': repr(response)}, physical_resource_id)
elif event['RequestType'] == 'Delete':
cfnresponse.send(event, context, cfnresponse.SUCCESS, {'Status': repr(response)}, physical_resource_id)
else:
# When triggering lambda from UI or Cron
response = lambda_handler()
if response != "Success":
return 0 #Failed
else:
return 'Completed Successfully'
except Exception as ex:
log.error("Error: Failed to %s trigger the lambda: %s" % (event['RequestType'], str(ex)))
cfnresponse.send(event, context,
cfnresponse.FAILED,
{'Exception': repr(ex)})
return 'Exception: %s' % str(ex)
if __name__ == "__main__":
lambda_handler()