ec2_logging_config

import boto3
import time
import calendar
from datetime import datetime
import json

def lambda_handler(event, context):
    
#Get all Log Group names in account
    client = boto3.client('logs')
    response = client.describe_log_groups()
    for logGroup in response["logGroups"]:
        logGroupName = logGroup["logGroupName"]

# Get LogStreams from LogGroups that start with "PROD"
        if logGroupName.startswith( 'PROD' ):
            newResponse = client.describe_log_streams(logGroupName=str(logGroupName))
            for logStreams in newResponse["logStreams"]:
                logStreamName = logStreams["logStreamName"]

# Get timestamp of most recent log        
            try:
                lastTimeStamp = logStreams["lastIngestionTime"]
                lastTimeStamp = str(lastTimeStamp)
                lastTimeStamp = lastTimeStamp[:-3]
            except KeyError:
                continue

# Compare current time and time of most recent log stream
            current = calendar.timegm(time.gmtime())
            timeDiff = int(current) - int(lastTimeStamp)
            if timeDiff >= 300 and timeDiff <= 36000: 
                dt_object = datetime.fromtimestamp(int(lastTimeStamp))
                print("The EC2 instance with ID: "+str(logStreamName)+" from logGroup: "+str(logGroupName)+" has not sent logs since: "+str(dt_object))