feat: logsサブスクリプションフィルタから、SNS通知を行うLambda関数をPythonにリプレース

lambda/PublishFromLog/publish_from_log.py

@@ -0,0 +1,29 @@
+import base64
+import gzip
+import json
+import os
+from io import BytesIO
+
+import boto3
+
+sns_client = boto3.client('sns')
+
+def lambda_handler(event, context):
+    awslogs_dict = event.get('awslogs') 
+    base64_data = awslogs_dict.get('data')
+    try:
+        decoded_gzip_data = base64.b64decode(base64_data)
+    except Exception as e:
+        raise e
+    log_event_str = gzip.GzipFile(fileobj=BytesIO(decoded_gzip_data)).read()
+    log_event = json.loads(log_event_str)
+
+    publish_message = {
+        'Subject': f'Detect Error(or Warning) in {log_event.get("logGroup")}',
+        'Message': '\n'.join([log.get('message') for log in log_event.get('logEvents')]),
+        'TopicArn': os.environ.get('SNS_TOPIC_ARN')
+    }
+    
+    print(publish_message)
+    
+    sns_client.publish(**publish_message)