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How to use message_attributes_to_upper method in localstack

Best Python code snippet using localstack_python

dead_letter_queue.py

Source:dead_letter_queue.py

...79    }80    if ":sqs:" in source_arn:81        custom_attrs["ErrorMessage"]["StringValue"] = str(error.result)82        for record in event.get("Records", []):83            msg_attrs = message_attributes_to_upper(record.get("messageAttributes"))84            message_attrs = {**msg_attrs, **custom_attrs}85            messages.append(86                {87                    "Id": record.get("messageId"),88                    "MessageBody": record.get("body"),89                    "MessageAttributes": message_attrs,90                }91            )92    elif ":sns:" in source_arn:93        messages.append(94            {95                "Id": str(uuid.uuid4()),96                "MessageBody": json.dumps(event),97                "MessageAttributes": custom_attrs,98            }99        )100    elif ":lambda:" in source_arn:101        if event.get("Records") and "sns" in event["Records"][0]["EventSource"]:102            for record in event["Records"]:103                sns_rec = record.get("Sns", {})104                message_attrs = {**sns_rec.get("MessageAttributes"), **custom_attrs}105                messages.append(106                    {107                        "Id": sns_rec.get("MessageId"),108                        "MessageBody": sns_rec.get("Message"),109                        "MessageAttributes": message_attrs,110                    }111                )112        else:113            messages.append(114                {115                    "Id": str(uuid.uuid4()),116                    "MessageBody": json.dumps(event),117                    "MessageAttributes": custom_attrs,118                }119            )120    return messages121def message_attributes_to_upper(message_attrs):122    """Convert message attribute details (first characters) to upper case (e.g., StringValue, DataType)."""123    message_attrs = message_attrs or {}124    for _, attr in message_attrs.items():125        if not isinstance(attr, dict):126            continue127        for key, value in dict(attr).items():128            attr[first_char_to_upper(key)] = attr.pop(key)...

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