feat: cloudfront-usage.py which calculates the usage of past 3 months

2026-03-15 23:15:09 +08:00
parent a732a5c86f
commit 64290109a6
1 changed files with 52 additions and 0 deletions
@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+r"""
+Documentation
+
+License: This program is released under the MIT License
+"""
+
+# Imports
+import boto3
+from datetime import datetime, timedelta
+from dateutil.relativedelta import relativedelta
+
+# Main function
+def main() -> None:
+    # get distributions
+    cw = boto3.client('cloudwatch', region_name='us-east-1')
+    cf = boto3.client('cloudfront', region_name='us-east-1')
+    distros = cf.list_distributions()['DistributionList']['Items']
+    dist_ids = [d['Id'] for d in distros if d['Status'] == 'Deployed']
+
+    for dist_id in dist_ids:
+        for month_offset in range(-3, 0):  # Past 3 months
+            now = datetime.now()
+            first_of_current_month = now.replace(day=1)
+            start = (first_of_current_month + relativedelta(months=month_offset)).replace(day=1)
+            end = (start + relativedelta(months=1)) - relativedelta(seconds=1)  # Last day
+
+            # BytesDownloaded
+            bytes_resp = cw.get_metric_statistics(
+                Namespace='AWS/CloudFront', MetricName='BytesDownloaded',
+                Dimensions=[{'Name': 'DistributionId', 'Value': dist_id}, {'Name': 'Region', 'Value': 'Global'}],
+                StartTime=start, EndTime=end, Period=2678400, Statistics=['Sum']
+            )
+            bytes_total = bytes_resp['Datapoints'][0]['Sum'] if bytes_resp['Datapoints'] else 0
+
+            # Requests
+            reqs_resp = cw.get_metric_statistics(
+                Namespace='AWS/CloudFront', MetricName='Requests',
+                Dimensions=[{'Name': 'DistributionId', 'Value': dist_id}, {'Name': 'Region', 'Value': 'Global'}],
+                StartTime=start, EndTime=end, Period=2678400, Statistics=['Sum']
+            )
+            reqs_total = reqs_resp['Datapoints'][0]['Sum'] if reqs_resp['Datapoints'] else 0
+
+            gb = round(bytes_total / (1024 ** 3), 2) if bytes_total else 0
+            # only interested in distro with high traffic
+            if gb > 10:
+                print(f"{dist_id} - Month: {start:%Y-%b} Requests: {reqs_total:,.0f} BytesDownloaded: {gb} GB")
+
+
+# Call main function
+if __name__ == '__main__':
+    main()