Updated sensors and added empty logger for speedup

spatz/logger.py

@@ -1,6 +1,7 @@
 import numpy as np
 import pandas as pd
 
+from abc import abstractmethod
 from typing import Any, Tuple, List
 from numpy.typing import ArrayLike
 
@@ -10,6 +11,35 @@ from spatz.simulations.advanceable import Advanceable
 class Logger(Advanceable):
     def __init__(self) -> None:
         super().__init__()
+
+    @abstractmethod
+    def write(self, attrib: str | List[str], value: Any | List[Any] | List[ArrayLike], domain: str = 'all'):
+        pass
+        
+
+class EmptyLogger(Logger):
+    def __init__(self) -> None:
+        super().__init__()
+
+        self.__idx = -1
+
+    def _on_step(self, _: float):
+        pass
+
+    def _on_reset(self):
+        pass
+
+    def write(self, attrib: str | List[str], value: Any | List[Any] | List[ArrayLike], domain: str = 'all'):
+        pass
+
+    def get_dataframe(self) -> pd.DataFrame:
+        pass
+
+
+class CSVLogger(Logger):
+    def __init__(self) -> None:
+        super().__init__()
+
         self.__idx = -1
 
     def _on_step(self, _: float):