| |
| |
| |
|
|
| import logging |
| from typing import Optional |
|
|
| import haystack.logging as haystack_logging |
| from haystack.core.component import component |
|
|
| logger = haystack_logging.getLogger(__name__) |
|
|
|
|
| @component |
| class Greet: |
| """ |
| Logs a greeting message without affecting the value passing on the connection. |
| """ |
|
|
| def __init__(self, message: str = "\nGreeting component says: Hi! The value is {value}\n", log_level: str = "INFO"): |
| """ |
| Class constructor |
| |
| :param message: the message to log. Can use `{value}` to embed the value. |
| :param log_level: the level to log at. |
| """ |
| if log_level and not getattr(logging, log_level): |
| raise ValueError(f"This log level does not exist: {log_level}") |
| self.message = message |
| self.log_level = log_level |
|
|
| @component.output_types(value=int) |
| def run(self, value: int, message: Optional[str] = None, log_level: Optional[str] = None): |
| """ |
| Logs a greeting message without affecting the value passing on the connection. |
| """ |
| if not message: |
| message = self.message |
| if not log_level: |
| log_level = self.log_level |
|
|
| level = getattr(logging, log_level, None) |
| if not level: |
| raise ValueError(f"This log level does not exist: {log_level}") |
|
|
| logger.log(level=level, msg=message.format(value=value)) |
| return {"value": value} |
|
|
