Singular redis-client.

scripts/wait_for_redis.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+"""
+Helper script to wait for Redis to be available before starting the application.
+"""
+
+import redis
+import time
+import os
+import sys
+import logging
+
+logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
+logger = logging.getLogger(__name__)
+
+def wait_for_redis(host='localhost', port=6379, db=0, max_retries=30, retry_interval=2):
+    """Wait for Redis to become available"""
+    redis_client = None
+    retry_count = 0
+
+    logger.info(f"Waiting for Redis at {host}:{port}/{db}...")
+
+    while retry_count < max_retries:
+        try:
+            redis_client = redis.Redis(
+                host=host,
+                port=port,
+                db=db,
+                socket_timeout=2,
+                socket_connect_timeout=2
+            )
+            redis_client.ping()
+            logger.info(f"✅ Redis at {host}:{port}/{db} is now available!")
+            return True
+        except (redis.exceptions.ConnectionError, redis.exceptions.TimeoutError) as e:
+            retry_count += 1
+            if retry_count >= max_retries:
+                logger.error(f"❌ Failed to connect to Redis after {max_retries} attempts: {e}")
+                return False
+
+            logger.info(f"⏳ Redis not available yet, retrying in {retry_interval}s... ({retry_count}/{max_retries})")
+            time.sleep(retry_interval)
+        except Exception as e:
+            logger.error(f"❌ Unexpected error connecting to Redis: {e}")
+            return False
+
+    return False
+
+if __name__ == "__main__":
+    host = os.environ.get('REDIS_HOST', 'localhost')
+    port = int(os.environ.get('REDIS_PORT', 6379))
+    db = int(os.environ.get('REDIS_DB', 0))
+    max_retries = int(os.environ.get('REDIS_WAIT_RETRIES', 30))
+    retry_interval = int(os.environ.get('REDIS_WAIT_INTERVAL', 2))
+
+    logger.info(f"Starting Redis availability check at {host}:{port}/{db}")
+
+    if wait_for_redis(host, port, db, max_retries, retry_interval):
+        sys.exit(0)
+    else:
+        sys.exit(1)