fix: add sqs_batch_processor as its own method

Author: Tom McCarthy

aws_lambda_powertools/utilities/batch/middlewares.py

@@ -3,8 +3,9 @@
 """
 Middlewares for batch utilities
 """
-import functools
-from typing import Callable, Dict
+from typing import Callable, Dict, Optional
+
+from botocore.config import Config
 
 from aws_lambda_powertools.middleware_factory import lambda_handler_decorator
 
@@ -57,4 +58,49 @@ def batch_processor(
     return handler(event, context)
 
 
-sqs_batch_processor = functools.partial(batch_processor, processor=PartialSQSProcessor())
+@lambda_handler_decorator
+def sqs_batch_processor(
+    handler: Callable, event: Dict, context: Dict, record_handler: Callable, config: Optional[Config] = None
+):
+    """
+    Middleware to handle batch event processing
+
+    Parameters
+    ----------
+    handler: Callable
+        Lambda's handler
+    event: Dict
+        Lambda's Event
+    context: Dict
+        Lambda's Context
+    record_handler: Callable
+        Callable to process each record from the batch
+    config: Config
+            botocore config object
+
+    Examples
+    --------
+    **Processes Lambda's event with PartialSQSProcessor**
+        >>> from aws_lambda_powertools.utilities.batch import sqs_batch_processor
+        >>>
+        >>> def record_handler(record):
+        >>>     return record["body"]
+        >>>
+        >>> @sqs_batch_processor(record_handler=record_handler)
+        >>> def handler(event, context):
+        >>>     return {"StatusCode": 200}
+
+    Limitations
+    -----------
+    * Async batch processors
+
+    """
+    config = config or Config()
+    processor = PartialSQSProcessor(config=config)
+
+    records = event["Records"]
+
+    with processor(records, record_handler):
+        processor.process()
+
+    return handler(event, context)