fix: logging, prediction update, multiple bugs (#584)

* Fix logging configuration issues that made logging stop operation. Switch to Loguru
  logging (from Python logging). Enable console and file logging with different log levels.
  Add logging documentation.

* Fix logging configuration and EOS configuration out of sync. Added tracking support
  for nested value updates of Pydantic models. This used to update the logging configuration
  when the EOS configurationm for logging is changed. Should keep logging config and EOS
  config in sync as long as all changes to the EOS logging configuration are done by
  set_nested_value(), which is the case for the REST API.

* Fix energy management task looping endlessly after the second update when trying to update
  the last_update datetime.

* Fix get_nested_value() to correctly take values from the dicts in a Pydantic model instance.

* Fix usage of model classes instead of model instances in nested value access when evaluation
  the value type that is associated to each key.

* Fix illegal json format in prediction documentation for PVForecastAkkudoktor provider.

* Fix documentation qirks and add EOS Connect to integrations.

* Support deprecated fields in configuration in documentation generation and EOSdash.

* Enhance EOSdash demo to show BrightSky humidity data (that is often missing)

* Update documentation reference to German EOS installation videos.

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

Makefile

@@ -76,6 +76,11 @@ read-docs: docs
 	@echo "Read the documentation in your browser"
 	.venv/bin/python -m webbrowser build/docs/html/index.html
 
+# Clean Python bytecode
+clean-bytecode:
+	find . -type d -name "__pycache__" -exec rm -r {} +
+	find . -type f -name "*.pyc" -delete
+
 # Clean target to remove generated documentation and documentation artefacts
 clean-docs:
 	@echo "Searching and deleting all '_autosum' directories in docs..."

docs/_generated/config.md

@@ -15,10 +15,6 @@ Properties:
     timezone (Optional[str]): Computed time zone string based on the specified latitude
         and longitude.
 
-Validators:
-    validate_latitude (float): Ensures `latitude` is within the range -90 to 90.
-    validate_longitude (float): Ensures `longitude` is within the range -180 to 180.
-
 :::{table} general
 :widths: 10 20 10 5 5 30
 :align: left
@@ -127,8 +123,10 @@ Validators:
 
 | Name | Environment Variable | Type | Read-Only | Default | Description |
 | ---- | -------------------- | ---- | --------- | ------- | ----------- |
-| level | `EOS_LOGGING__LEVEL` | `Optional[str]` | `rw` | `None` | EOS default logging level. |
-| root_level | | `str` | `ro` | `N/A` | Root logger logging level. |
+| level | `EOS_LOGGING__LEVEL` | `Optional[str]` | `rw` | `None` | This is deprecated. Use console_level and file_level instead. |
+| console_level | `EOS_LOGGING__CONSOLE_LEVEL` | `Optional[str]` | `rw` | `None` | Logging level when logging to console. |
+| file_level | `EOS_LOGGING__FILE_LEVEL` | `Optional[str]` | `rw` | `None` | Logging level when logging to file. |
+| file_path | | `Optional[pathlib.Path]` | `ro` | `N/A` | Computed log file path based on data output path. |
 :::
 
 ### Example Input
@@ -138,7 +136,9 @@ Validators:
 
    {
        "logging": {
-           "level": "INFO"
+           "level": null,
+           "console_level": "TRACE",
+           "file_level": "TRACE"
        }
    }
 ```
@@ -150,8 +150,10 @@ Validators:
 
    {
        "logging": {
-           "level": "INFO",
-           "root_level": "INFO"
+           "level": null,
+           "console_level": "TRACE",
+           "file_level": "TRACE",
+           "file_path": "/home/user/.local/share/net.akkudoktoreos.net/output/eos.log"
        }
    }
 ```
@@ -946,7 +948,9 @@ Validators:
            "interval": 300.0
        },
        "logging": {
-           "level": "INFO"
+           "level": null,
+           "console_level": "TRACE",
+           "file_level": "TRACE"
        },
        "devices": {
            "batteries": [

docs/_generated/openapi.md

@@ -464,6 +464,55 @@ Health check endpoint to verify that the EOS server is alive.
 
 ---
 
+## GET /v1/logging/log
+
+**Links**: [local](http://localhost:8503/docs#/default/fastapi_logging_get_log_v1_logging_log_get), [eos](https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/Akkudoktor-EOS/EOS/refs/heads/main/openapi.json#/default/fastapi_logging_get_log_v1_logging_log_get)
+
+Fastapi Logging Get Log
+
+```
+Get structured log entries from the EOS log file.
+
+Filters and returns log entries based on the specified query parameters. The log
+file is expected to contain newline-delimited JSON entries.
+
+Args:
+    limit (int): Maximum number of entries to return.
+    level (Optional[str]): Filter logs by severity level (e.g., DEBUG, INFO).
+    contains (Optional[str]): Return only logs that include this string in the message.
+    regex (Optional[str]): Return logs that match this regular expression in the message.
+    from_time (Optional[str]): ISO 8601 timestamp to filter logs not older than this.
+    to_time (Optional[str]): ISO 8601 timestamp to filter logs not newer than this.
+    tail (bool): If True, fetch the most recent log entries (like `tail`).
+
+Returns:
+    JSONResponse: A JSON list of log entries.
+```
+
+**Parameters**:
+
+- `limit` (query, optional): Maximum number of log entries to return.
+
+- `level` (query, optional): Filter by log level (e.g., INFO, ERROR).
+
+- `contains` (query, optional): Filter logs containing this substring.
+
+- `regex` (query, optional): Filter logs by matching regex in message.
+
+- `from_time` (query, optional): Start time (ISO format) for filtering logs.
+
+- `to_time` (query, optional): End time (ISO format) for filtering logs.
+
+- `tail` (query, optional): If True, returns the most recent lines (tail mode).
+
+**Responses**:
+
+- **200**: Successful Response
+
+- **422**: Validation Error
+
+---
+
 ## PUT /v1/measurement/data
 
 **Links**: [local](http://localhost:8503/docs#/default/fastapi_measurement_data_put_v1_measurement_data_put), [eos](https://petstore3.swagger.io/?url=https://raw.githubusercontent.com/Akkudoktor-EOS/EOS/refs/heads/main/openapi.json#/default/fastapi_measurement_data_put_v1_measurement_data_put)

docs/akkudoktoreos/architecture.md

@@ -28,7 +28,7 @@ management.
 Energy management is the overall process to provide planning data for scheduling the different
 devices in your system in an optimal way. Energy management cares for the update of predictions and
 the optimization of the planning based on the simulated behavior of the devices. The planning is on
-the hour. Sub-hour energy management is left
+the hour.
 
 ### Optimization
 

docs/akkudoktoreos/integration.md

@@ -20,8 +20,8 @@ Andreas Schmitz uses [Node-RED](https://nodered.org/) as part of his home automa
 
 ### Node-Red Resources
 
-- [Installation Guide (German)](https://meintechblog.de/2024/09/05/andreas-schmitz-joerg-installiert-mein-energieoptimierungssystem/)
-  \— A detailed guide on integrating an early version of EOS with `Node-RED`.
+- [Installation Guide (German)](https://www.youtube.com/playlist?list=PL8_vk9A-s7zLD865Oou6y3EeQLlNtu-Hn)
+  \— A detailed guide on integrating EOS with `Node-RED`.
 
 ## Home Assistant
 
@@ -34,3 +34,8 @@ emphasizes local control and user privacy.
 
 - Duetting's [EOS Home Assistant Addon](https://github.com/Duetting/ha_eos_addon) — Additional
   details can be found in this [discussion thread](https://github.com/Akkudoktor-EOS/EOS/discussions/294).
+
+## EOS Connect
+
+[EOS connect](https://github.com/ohAnd/EOS_connect) uses `EOS` for energy management and optimization,
+and connects to smart home platforms to monitor, forecast, and control energy flows.

docs/akkudoktoreos/introduction.md

@@ -174,7 +174,7 @@ but usually find good local optima very quickly in a large solution space.
 
 ## Links
 
-- [German Video explaining the basic concept and installation process for the early version of EOS (YouTube)](https://www.youtube.com/live/ftQULW4-1ts?si=oDdBBifCpUmiCXaY)
+- [German Videos explaining the basic concept and installation process of EOS (YouTube)](https://www.youtube.com/playlist?list=PL8_vk9A-s7zLD865Oou6y3EeQLlNtu-Hn)
 - [German Forum of Akkudoktor EOS](https://akkudoktor.net/c/der-akkudoktor/eos)
 - [Akkudoktor-EOS GitHub Repository](https://github.com/Akkudoktor-EOS/EOS)
 - [Latest EOS Documentation](https://akkudoktor-eos.readthedocs.io/en/latest/)

docs/akkudoktoreos/logging.md

@@ -0,0 +1,75 @@
+% SPDX-License-Identifier: Apache-2.0
+(logging-page)=
+
+# Logging
+
+EOS automatically records important events and messages to help you understand what’s happening and
+to troubleshoot problems.
+
+## How Logging Works
+
+- By default, logs are shown in your terminal (console).
+- You can also save logs to a file for later review.
+- Log files are rotated automatically to avoid becoming too large.
+
+## Controlling Log Details
+
+### 1. Command-Line Option
+
+Set the amount of log detail shown on the console by using `--log-level` when starting EOS.
+
+Example:
+
+```{eval-rst}
+.. tabs::
+
+  .. tab:: Windows
+
+     .. code-block:: powershell
+
+        .venv\Scripts\python src/akkudoktoreos/server/eos.py --log-level DEBUG
+
+  .. tab:: Linux
+
+     .. code-block:: bash
+
+        .venv/bin/python src/akkudoktoreos/server/eos.py --log-level DEBUG
+
+```
+
+Common levels:
+
+- DEBUG (most detail)
+- INFO (default)
+- WARNING
+- ERROR
+- CRITICAL (least detail)
+
+### 2. Configuration File
+
+You can also set logging options in your EOS configuration file (EOS.config.json).
+
+```Json
+{
+  "logging": {
+    "console_level": "INFO",
+    "file_level": "DEBUG"
+  }
+}
+```
+
+### 3. Environment Variable
+
+You can also control the log level by setting the `EOS_LOGGING__CONSOLE_LEVEL` and the
+`EOS_LOGGING__FILE_LEVEL` environment variables.
+
+```bash
+  EOS_LOGGING__CONSOLE_LEVEL="INFO"
+  EOS_LOGGING__FILE_LEVEL="DEBUG"
+```
+
+## File Logging
+
+If the `file_level` configuration is set, log records are written to a rotating log file. The log
+file is in the data output directory and named `eos.log`. You may directly read the file or use
+the `/v1/logging/log` endpoint to access the file log.

docs/akkudoktoreos/prediction.md

@@ -375,28 +375,28 @@ Example:
         "surface_azimuth": -10,
         "surface_tilt": 7,
         "userhorizon": [20, 27, 22, 20],
-        "inverter_paco": 10000,
+        "inverter_paco": 10000
       },
       {
         "peakpower": 4.8,
         "surface_azimuth": -90,
         "surface_tilt": 7,
         "userhorizon": [30, 30, 30, 50],
-        "inverter_paco": 10000,
+        "inverter_paco": 10000
       },
       {
         "peakpower": 1.4,
         "surface_azimuth": -40,
         "surface_tilt": 60,
         "userhorizon": [60, 30, 0, 30],
-        "inverter_paco": 2000,
+        "inverter_paco": 2000
       },
       {
         "peakpower": 1.6,
         "surface_azimuth": 5,
         "surface_tilt": 45,
         "userhorizon": [45, 25, 30, 60],
-        "inverter_paco": 1400,
+        "inverter_paco": 1400
       }
     ]
   }

docs/index.md

@@ -40,6 +40,7 @@ akkudoktoreos/optimization.md
 akkudoktoreos/prediction.md
 akkudoktoreos/measurement.md
 akkudoktoreos/integration.md
+akkudoktoreos/logging.md
 akkudoktoreos/serverapi.md
 akkudoktoreos/api.rst
 

requirements.txt

@@ -22,3 +22,4 @@ pydantic==2.11.5
 statsmodels==0.14.4
 pydantic-settings==2.9.1
 linkify-it-py==2.0.3
+loguru==0.7.3

scripts/generate_config_md.py

@@ -4,22 +4,20 @@
 import argparse
 import json
 import os
+import re
 import sys
 import textwrap
 from pathlib import Path
 from typing import Any, Union
 
+from loguru import logger
 from pydantic.fields import ComputedFieldInfo, FieldInfo
 from pydantic_core import PydanticUndefined
 
 from akkudoktoreos.config.config import ConfigEOS, GeneralSettings, get_config
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticBaseModel
 from akkudoktoreos.utils.docs import get_model_structure_from_examples
 
-logger = get_logger(__name__)
-
-
 documented_types: set[PydanticBaseModel] = set()
 undocumented_types: dict[PydanticBaseModel, tuple[str, list[str]]] = dict()
 
@@ -145,6 +143,7 @@ def generate_config_table_md(
         field_type = field_info.annotation if regular_field else field_info.return_type
         default_value = get_default_value(field_info, regular_field)
         description = field_info.description if field_info.description else "-"
+        deprecated = field_info.deprecated if field_info.deprecated else None
         read_only = "rw" if regular_field else "ro"
         type_name = get_type_name(field_type)
 
@@ -154,6 +153,11 @@ def generate_config_table_md(
                 env_entry = f"| `{prefix}{config_name}` "
             else:
                 env_entry = "| "
+        if deprecated:
+            if isinstance(deprecated, bool):
+                description = "Deprecated!"
+            else:
+                description = deprecated
         table += f"| {field_name} {env_entry}| `{type_name}` | `{read_only}` | `{default_value}` | {description} |\n"
 
         inner_types: dict[PydanticBaseModel, tuple[str, list[str]]] = dict()
@@ -259,7 +263,7 @@ def generate_config_md(config_eos: ConfigEOS) -> str:
     markdown = "# Configuration Table\n\n"
 
     # Generate tables for each top level config
-    for field_name, field_info in config_eos.model_fields.items():
+    for field_name, field_info in config_eos.__class__.model_fields.items():
         field_type = field_info.annotation
         markdown += generate_config_table_md(
             field_type, [field_name], f"EOS_{field_name.upper()}__", True
@@ -279,6 +283,13 @@ def generate_config_md(config_eos: ConfigEOS) -> str:
     markdown = markdown.rstrip("\n")
     markdown += "\n"
 
+    # Assure log path does not leak to documentation
+    markdown = re.sub(
+        r'(?<=["\'])/[^"\']*/output/eos\.log(?=["\'])',
+        '/home/user/.local/share/net.akkudoktoreos.net/output/eos.log',
+        markdown
+    )
+
     return markdown
 
 

scripts/generate_openapi.py

@@ -42,6 +42,9 @@ def generate_openapi() -> dict:
     general = openapi_spec["components"]["schemas"]["ConfigEOS"]["properties"]["general"]["default"]
     general["config_file_path"] = "/home/user/.config/net.akkudoktoreos.net/EOS.config.json"
     general["config_folder_path"] = "/home/user/.config/net.akkudoktoreos.net"
+    # Fix file path for logging settings to not show local/test file path
+    logging = openapi_spec["components"]["schemas"]["ConfigEOS"]["properties"]["logging"]["default"]
+    logging["file_path"] = "/home/user/.local/share/net.akkudoktoreos.net/output/eos.log"
 
     return openapi_spec
 

single_test_optimization.py

@@ -12,15 +12,12 @@ import numpy as np
 
 from akkudoktoreos.config.config import get_config
 from akkudoktoreos.core.ems import get_ems
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.optimization.genetic import (
     OptimizationParameters,
     optimization_problem,
 )
 from akkudoktoreos.prediction.prediction import get_prediction
 
-get_logger(__name__, logging_level="DEBUG")
-
 
 def prepare_optimization_real_parameters() -> OptimizationParameters:
     """Prepare and return optimization parameters with real world data.

src/akkudoktoreos/config/config.py

@@ -14,6 +14,7 @@ import shutil
 from pathlib import Path
 from typing import Any, ClassVar, Optional, Type
 
+from loguru import logger
 from platformdirs import user_config_dir, user_data_dir
 from pydantic import Field, computed_field
 from pydantic_settings import (
@@ -29,7 +30,6 @@ from akkudoktoreos.core.cachesettings import CacheCommonSettings
 from akkudoktoreos.core.coreabc import SingletonMixin
 from akkudoktoreos.core.decorators import classproperty
 from akkudoktoreos.core.emsettings import EnergyManagementCommonSettings
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.logsettings import LoggingCommonSettings
 from akkudoktoreos.core.pydantic import PydanticModelNestedValueMixin, merge_models
 from akkudoktoreos.devices.settings import DevicesCommonSettings
@@ -44,8 +44,6 @@ from akkudoktoreos.server.server import ServerCommonSettings
 from akkudoktoreos.utils.datetimeutil import to_timezone
 from akkudoktoreos.utils.utils import UtilsCommonSettings
 
-logger = get_logger(__name__)
-
 
 def get_absolute_path(
     basepath: Optional[Path | str], subpath: Optional[Path | str]
@@ -80,10 +78,6 @@ class GeneralSettings(SettingsBaseModel):
     Properties:
         timezone (Optional[str]): Computed time zone string based on the specified latitude
             and longitude.
-
-    Validators:
-        validate_latitude (float): Ensures `latitude` is within the range -90 to 90.
-        validate_longitude (float): Ensures `longitude` is within the range -180 to 180.
     """
 
     _config_folder_path: ClassVar[Optional[Path]] = None
@@ -283,6 +277,16 @@ class ConfigEOS(SingletonMixin, SettingsEOSDefaults):
     ENCODING: ClassVar[str] = "UTF-8"
     CONFIG_FILE_NAME: ClassVar[str] = "EOS.config.json"
 
+    def __hash__(self) -> int:
+        # ConfigEOS is a singleton
+        return hash("config_eos")
+
+    def __eq__(self, other: Any) -> bool:
+        if not isinstance(other, ConfigEOS):
+            return False
+        # ConfigEOS is a singleton
+        return True
+
     @classmethod
     def settings_customise_sources(
         cls,

src/akkudoktoreos/core/cache.py

@@ -27,17 +27,14 @@ from typing import (
 )
 
 import cachebox
+from loguru import logger
 from pendulum import DateTime, Duration
 from pydantic import Field
 
 from akkudoktoreos.core.coreabc import ConfigMixin, SingletonMixin
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticBaseModel
 from akkudoktoreos.utils.datetimeutil import compare_datetimes, to_datetime, to_duration
 
-logger = get_logger(__name__)
-
-
 # ---------------------------------
 # In-Memory Caching Functionality
 # ---------------------------------

src/akkudoktoreos/core/coreabc.py

@@ -13,13 +13,10 @@ Classes:
 import threading
 from typing import Any, ClassVar, Dict, Optional, Type
 
+from loguru import logger
 from pendulum import DateTime
 from pydantic import computed_field
 
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
-
 config_eos: Any = None
 measurement_eos: Any = None
 prediction_eos: Any = None

src/akkudoktoreos/core/dataabc.py

@@ -19,6 +19,7 @@ from typing import Any, Dict, Iterator, List, Optional, Tuple, Type, Union, over
 import numpy as np
 import pandas as pd
 import pendulum
+from loguru import logger
 from numpydantic import NDArray, Shape
 from pendulum import DateTime, Duration
 from pydantic import (
@@ -31,7 +32,6 @@ from pydantic import (
 )
 
 from akkudoktoreos.core.coreabc import ConfigMixin, SingletonMixin, StartMixin
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import (
     PydanticBaseModel,
     PydanticDateTimeData,
@@ -39,8 +39,6 @@ from akkudoktoreos.core.pydantic import (
 )
 from akkudoktoreos.utils.datetimeutil import compare_datetimes, to_datetime, to_duration
 
-logger = get_logger(__name__)
-
 
 class DataBase(ConfigMixin, StartMixin, PydanticBaseModel):
     """Base class for handling generic data.

src/akkudoktoreos/core/decorators.py

@@ -1,10 +1,6 @@
 from collections.abc import Callable
 from typing import Any, Optional
 
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
-
 
 class classproperty:
     """A decorator to define a read-only property at the class level.

src/akkudoktoreos/core/ems.py

@@ -2,6 +2,7 @@ import traceback
 from typing import Any, ClassVar, Optional
 
 import numpy as np
+from loguru import logger
 from numpydantic import NDArray, Shape
 from pendulum import DateTime
 from pydantic import ConfigDict, Field, computed_field, field_validator, model_validator
@@ -9,7 +10,6 @@ from typing_extensions import Self
 
 from akkudoktoreos.core.cache import CacheUntilUpdateStore
 from akkudoktoreos.core.coreabc import ConfigMixin, PredictionMixin, SingletonMixin
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import ParametersBaseModel, PydanticBaseModel
 from akkudoktoreos.devices.battery import Battery
 from akkudoktoreos.devices.generic import HomeAppliance
@@ -17,8 +17,6 @@ from akkudoktoreos.devices.inverter import Inverter
 from akkudoktoreos.utils.datetimeutil import compare_datetimes, to_datetime
 from akkudoktoreos.utils.utils import NumpyEncoder
 
-logger = get_logger(__name__)
-
 
 class EnergyManagementParameters(ParametersBaseModel):
     pv_prognose_wh: list[float] = Field(
@@ -283,6 +281,8 @@ class EnergyManagement(SingletonMixin, ConfigMixin, PredictionMixin, PydanticBas
         self.prediction.update_data(force_enable=force_enable, force_update=force_update)
         # TODO: Create optimisation problem that calls into devices.update_data() for simulations.
 
+        logger.info("Energy management run (crippled version - prediction update only)")
+
     def manage_energy(self) -> None:
         """Repeating task for managing energy.
 
@@ -302,6 +302,7 @@ class EnergyManagement(SingletonMixin, ConfigMixin, PredictionMixin, PydanticBas
         Note: The task maintains the interval even if some intervals are missed.
         """
         current_datetime = to_datetime()
+        interval = self.config.ems.interval  # interval maybe changed in between
 
         if EnergyManagement._last_datetime is None:
             # Never run before
@@ -316,13 +317,13 @@ class EnergyManagement(SingletonMixin, ConfigMixin, PredictionMixin, PydanticBas
                 logger.error(message)
             return
 
-        if self.config.ems.interval is None or self.config.ems.interval == float("nan"):
+        if interval is None or interval == float("nan"):
             # No Repetition
             return
 
         if (
-            compare_datetimes(current_datetime, self._last_datetime).time_diff
-            < self.config.ems.interval
+            compare_datetimes(current_datetime, EnergyManagement._last_datetime).time_diff
+            < interval
         ):
             # Wait for next run
             return
@@ -337,9 +338,9 @@ class EnergyManagement(SingletonMixin, ConfigMixin, PredictionMixin, PydanticBas
         # Remember the energy management run - keep on interval even if we missed some intervals
         while (
             compare_datetimes(current_datetime, EnergyManagement._last_datetime).time_diff
-            >= self.config.ems.interval
+            >= interval
         ):
-            EnergyManagement._last_datetime.add(seconds=self.config.ems.interval)
+            EnergyManagement._last_datetime = EnergyManagement._last_datetime.add(seconds=interval)
 
     def set_start_hour(self, start_hour: Optional[int] = None) -> None:
         """Sets start datetime to given hour.

src/akkudoktoreos/core/logabc.py

@@ -1,20 +1,3 @@
 """Abstract and base classes for logging."""
 
-import logging
-
-
-def logging_str_to_level(level_str: str) -> int:
-    """Convert log level string to logging level."""
-    if level_str == "DEBUG":
-        level = logging.DEBUG
-    elif level_str == "INFO":
-        level = logging.INFO
-    elif level_str == "WARNING":
-        level = logging.WARNING
-    elif level_str == "CRITICAL":
-        level = logging.CRITICAL
-    elif level_str == "ERROR":
-        level = logging.ERROR
-    else:
-        raise ValueError(f"Unknown loggin level: {level_str}")
-    return level
+LOGGING_LEVELS: list[str] = ["TRACE", "DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]

src/akkudoktoreos/core/logging.py

@@ -1,95 +1,241 @@
-"""Utility functions for handling logging tasks.
-
-Functions:
-----------
-- get_logger: Creates and configures a logger with console and optional rotating file logging.
-
-Example usage:
---------------
-    # Logger setup
-    >>> logger = get_logger(__name__, log_file="app.log", logging_level="DEBUG")
-    >>> logger.info("Logging initialized.")
-
-Notes:
-------
-- The logger supports rotating log files to prevent excessive log file size.
-"""
+"""Utility for configuring Loguru loggers."""
 
+import json
 import logging as pylogging
 import os
-from logging.handlers import RotatingFileHandler
-from typing import Optional
+import re
+import sys
+from pathlib import Path
+from types import FrameType
+from typing import Any, List, Optional
 
-from akkudoktoreos.core.logabc import logging_str_to_level
+import pendulum
+from loguru import logger
+
+from akkudoktoreos.core.logabc import LOGGING_LEVELS
 
 
-def get_logger(
-    name: str,
-    log_file: Optional[str] = None,
-    logging_level: Optional[str] = None,
-    max_bytes: int = 5000000,
-    backup_count: int = 5,
-) -> pylogging.Logger:
-    """Creates and configures a logger with a given name.
+class InterceptHandler(pylogging.Handler):
+    """A logging handler that redirects standard Python logging messages to Loguru.
 
-    The logger supports logging to both the console and an optional log file. File logging is
-    handled by a rotating file handler to prevent excessive log file size.
+    This handler ensures consistency between the `logging` module and Loguru by intercepting
+    logs sent to the standard logging system and re-emitting them through Loguru with proper
+    formatting and context (including exception info and call depth).
+
+    Attributes:
+        loglevel_mapping (dict): Mapping from standard logging levels to Loguru level names.
+    """
+
+    loglevel_mapping: dict[int, str] = {
+        50: "CRITICAL",
+        40: "ERROR",
+        30: "WARNING",
+        20: "INFO",
+        10: "DEBUG",
+        5: "TRACE",
+        0: "NOTSET",
+    }
+
+    def emit(self, record: pylogging.LogRecord) -> None:
+        """Emits a logging record by forwarding it to Loguru with preserved metadata.
+
+        Args:
+            record (logging.LogRecord): A record object containing log message and metadata.
+        """
+        try:
+            level = logger.level(record.levelname).name
+        except AttributeError:
+            level = self.loglevel_mapping.get(record.levelno, "INFO")
+
+        frame: Optional[FrameType] = pylogging.currentframe()
+        depth: int = 2
+        while frame and frame.f_code.co_filename == pylogging.__file__:
+            frame = frame.f_back
+            depth += 1
+
+        log = logger.bind(request_id="app")
+        log.opt(depth=depth, exception=record.exc_info).log(level, record.getMessage())
+
+
+console_handler_id = None
+file_handler_id = None
+
+
+def track_logging_config(config_eos: Any, path: str, old_value: Any, value: Any) -> None:
+    """Track logging config changes."""
+    global console_handler_id, file_handler_id
+
+    if not path.startswith("logging"):
+        raise ValueError(f"Logging shall not track '{path}'")
+
+    if not config_eos.logging.console_level:
+        # No value given - check environment value - may also be None
+        config_eos.logging.console_level = os.getenv("EOS_LOGGING__LEVEL")
+    if not config_eos.logging.file_level:
+        # No value given - check environment value - may also be None
+        config_eos.logging.file_level = os.getenv("EOS_LOGGING__LEVEL")
+
+    # Remove handlers
+    if console_handler_id:
+        try:
+            logger.remove(console_handler_id)
+        except Exception as e:
+            logger.debug("Exception on logger.remove: {}", e, exc_info=True)
+        console_handler_id = None
+    if file_handler_id:
+        try:
+            logger.remove(file_handler_id)
+        except Exception as e:
+            logger.debug("Exception on logger.remove: {}", e, exc_info=True)
+        file_handler_id = None
+
+    # Create handlers with new configuration
+    # Always add console handler
+    if config_eos.logging.console_level not in LOGGING_LEVELS:
+        logger.error(
+            f"Invalid console log level '{config_eos.logging.console_level} - forced to INFO'."
+        )
+        config_eos.logging.console_level = "INFO"
+
+    console_handler_id = logger.add(
+        sys.stderr,
+        enqueue=True,
+        backtrace=True,
+        level=config_eos.logging.console_level,
+        # format=_console_format
+    )
+
+    # Add file handler
+    if config_eos.logging.file_level and config_eos.logging.file_path:
+        if config_eos.logging.file_level not in LOGGING_LEVELS:
+            logger.error(
+                f"Invalid file log level '{config_eos.logging.console_level}' - forced to INFO."
+            )
+            config_eos.logging.file_level = "INFO"
+
+        file_handler_id = logger.add(
+            sink=config_eos.logging.file_path,
+            rotation="100 MB",
+            retention="3 days",
+            enqueue=True,
+            backtrace=True,
+            level=config_eos.logging.file_level,
+            serialize=True,  # JSON dict formatting
+            # format=_file_format
+        )
+
+    # Redirect standard logging to Loguru
+    pylogging.basicConfig(handlers=[InterceptHandler()], level=0)
+    # Redirect uvicorn and fastapi logging to Loguru
+    pylogging.getLogger("uvicorn.access").handlers = [InterceptHandler()]
+    for pylogger_name in ["uvicorn", "uvicorn.error", "fastapi"]:
+        pylogger = pylogging.getLogger(pylogger_name)
+        pylogger.handlers = [InterceptHandler()]
+        pylogger.propagate = False
+
+    logger.info(
+        f"Logger reconfigured - console: {config_eos.logging.console_level}, file: {config_eos.logging.file_level}."
+    )
+
+
+def read_file_log(
+    log_path: Path,
+    limit: int = 100,
+    level: Optional[str] = None,
+    contains: Optional[str] = None,
+    regex: Optional[str] = None,
+    from_time: Optional[str] = None,
+    to_time: Optional[str] = None,
+    tail: bool = False,
+) -> List[dict]:
+    """Read and filter structured log entries from a JSON-formatted log file.
 
     Args:
-        name (str): The name of the logger, typically `__name__` from the calling module.
-        log_file (Optional[str]): Path to the log file for file logging. If None, no file logging is done.
-        logging_level (Optional[str]): Logging level (e.g., "INFO", "DEBUG"). Defaults to "INFO".
-        max_bytes (int): Maximum size in bytes for log file before rotation. Defaults to 5 MB.
-        backup_count (int): Number of backup log files to keep. Defaults to 5.
+        log_path (Path): Path to the JSON-formatted log file.
+        limit (int, optional): Maximum number of log entries to return. Defaults to 100.
+        level (Optional[str], optional): Filter logs by log level (e.g., "INFO", "ERROR"). Defaults to None.
+        contains (Optional[str], optional): Filter logs that contain this substring in their message. Case-insensitive. Defaults to None.
+        regex (Optional[str], optional): Filter logs whose message matches this regular expression. Defaults to None.
+        from_time (Optional[str], optional): ISO 8601 datetime string to filter logs not earlier than this time. Defaults to None.
+        to_time (Optional[str], optional): ISO 8601 datetime string to filter logs not later than this time. Defaults to None.
+        tail (bool, optional): If True, read the last lines of the file (like `tail -n`). Defaults to False.
 
     Returns:
-        logging.Logger: Configured logger instance.
+        List[dict]: A list of filtered log entries as dictionaries.
 
-    Example:
-        logger = get_logger(__name__, log_file="app.log", logging_level="DEBUG")
-        logger.info("Application started")
+    Raises:
+        FileNotFoundError: If the log file does not exist.
+        ValueError: If the datetime strings are invalid or improperly formatted.
+        Exception: For other unforeseen I/O or parsing errors.
     """
-    # Create a logger with the specified name
-    logger = pylogging.getLogger(name)
-    logger.propagate = True
-    # This is already supported by pydantic-settings in LoggingCommonSettings, however in case
-    # loading the config itself fails and to set the level before we load the config, we set it here manually.
-    if logging_level is None and (env_level := os.getenv("EOS_LOGGING__LEVEL")) is not None:
-        logging_level = env_level
-    if logging_level is not None:
-        level = logging_str_to_level(logging_level)
-        logger.setLevel(level)
+    if not log_path.exists():
+        raise FileNotFoundError("Log file not found")
 
-    # The log message format
-    formatter = pylogging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
+    try:
+        from_dt = pendulum.parse(from_time) if from_time else None
+        to_dt = pendulum.parse(to_time) if to_time else None
+    except Exception as e:
+        raise ValueError(f"Invalid date/time format: {e}")
 
-    # Prevent loggers from being added multiple times
-    # There may already be a logger from pytest
-    if not logger.handlers:
-        # Create a console handler with a standard output stream
-        console_handler = pylogging.StreamHandler()
-        if logging_level is not None:
-            console_handler.setLevel(level)
-        console_handler.setFormatter(formatter)
+    regex_pattern = re.compile(regex) if regex else None
 
-        # Add the console handler to the logger
-        logger.addHandler(console_handler)
+    def matches_filters(log: dict) -> bool:
+        if level and log.get("level", {}).get("name") != level.upper():
+            return False
+        if contains and contains.lower() not in log.get("message", "").lower():
+            return False
+        if regex_pattern and not regex_pattern.search(log.get("message", "")):
+            return False
+        if from_dt or to_dt:
+            try:
+                log_time = pendulum.parse(log["time"])
+            except Exception:
+                return False
+            if from_dt and log_time < from_dt:
+                return False
+            if to_dt and log_time > to_dt:
+                return False
+        return True
 
-    if log_file and len(logger.handlers) < 2:  # We assume a console logger to be the first logger
-        # If a log file path is specified, create a rotating file handler
+    matched_logs = []
+    lines: list[str] = []
 
-        # Ensure the log directory exists
-        log_dir = os.path.dirname(log_file)
-        if log_dir and not os.path.exists(log_dir):
-            os.makedirs(log_dir)
+    if tail:
+        with log_path.open("rb") as f:
+            f.seek(0, 2)
+            end = f.tell()
+            buffer = bytearray()
+            pointer = end
 
-        # Create a rotating file handler
-        file_handler = RotatingFileHandler(log_file, maxBytes=max_bytes, backupCount=backup_count)
-        if logging_level is not None:
-            file_handler.setLevel(level)
-        file_handler.setFormatter(formatter)
+            while pointer > 0 and len(lines) < limit * 5:
+                pointer -= 1
+                f.seek(pointer)
+                byte = f.read(1)
+                if byte == b"\n":
+                    if buffer:
+                        line = buffer[::-1].decode("utf-8", errors="ignore")
+                        lines.append(line)
+                        buffer.clear()
+                else:
+                    buffer.append(byte[0])
+            if buffer:
+                line = buffer[::-1].decode("utf-8", errors="ignore")
+                lines.append(line)
+        lines = lines[::-1]
+    else:
+        with log_path.open("r", encoding="utf-8", newline=None) as f_txt:
+            lines = f_txt.readlines()
 
-        # Add the file handler to the logger
-        logger.addHandler(file_handler)
+    for line in lines:
+        if not line.strip():
+            continue
+        try:
+            log = json.loads(line)
+        except json.JSONDecodeError:
+            continue
+        if matches_filters(log):
+            matched_logs.append(log)
+            if len(matched_logs) >= limit:
+                break
 
-    return logger
+    return matched_logs

src/akkudoktoreos/core/logsettings.py

@@ -3,13 +3,13 @@
 Kept in an extra module to avoid cyclic dependencies on package import.
 """
 
-import logging
+from pathlib import Path
 from typing import Optional
 
 from pydantic import Field, computed_field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logabc import logging_str_to_level
+from akkudoktoreos.core.logabc import LOGGING_LEVELS
 
 
 class LoggingCommonSettings(SettingsBaseModel):
@@ -17,27 +17,47 @@ class LoggingCommonSettings(SettingsBaseModel):
 
     level: Optional[str] = Field(
         default=None,
-        description="EOS default logging level.",
-        examples=["INFO", "DEBUG", "WARNING", "ERROR", "CRITICAL"],
+        deprecated="This is deprecated. Use console_level and file_level instead.",
     )
 
-    # Validators
-    @field_validator("level", mode="after")
-    @classmethod
-    def set_default_logging_level(cls, value: Optional[str]) -> Optional[str]:
-        if isinstance(value, str) and value.upper() == "NONE":
-            value = None
-        if value is None:
-            return None
-        level = logging_str_to_level(value)
-        logging.getLogger().setLevel(level)
-        return value
+    console_level: Optional[str] = Field(
+        default=None,
+        description="Logging level when logging to console.",
+        examples=LOGGING_LEVELS,
+    )
+
+    file_level: Optional[str] = Field(
+        default=None,
+        description="Logging level when logging to file.",
+        examples=LOGGING_LEVELS,
+    )
 
-    # Computed fields
     @computed_field  # type: ignore[prop-decorator]
     @property
-    def root_level(self) -> str:
-        """Root logger logging level."""
-        level = logging.getLogger().getEffectiveLevel()
-        level_name = logging.getLevelName(level)
-        return level_name
+    def file_path(self) -> Optional[Path]:
+        """Computed log file path based on data output path."""
+        try:
+            path = SettingsBaseModel.config.general.data_output_path / "eos.log"
+        except:
+            # Config may not be fully set up
+            path = None
+        return path
+
+    # Validators
+    @field_validator("console_level", "file_level", mode="after")
+    @classmethod
+    def validate_level(cls, value: Optional[str]) -> Optional[str]:
+        """Validate logging level string."""
+        if value is None:
+            # Nothing to set
+            return None
+        if isinstance(value, str):
+            level = value.upper()
+            if level == "NONE":
+                return None
+            if level not in LOGGING_LEVELS:
+                raise ValueError(f"Logging level {value} not supported")
+            value = level
+        else:
+            raise TypeError(f"Invalid {type(value)} of logging level {value}")
+        return value

src/akkudoktoreos/core/pydantic.py

@@ -12,20 +12,35 @@ Key Features:
   pandas DataFrames and Series with datetime indexes.
 """
 
+import inspect
 import json
 import re
+import uuid
+import weakref
 from copy import deepcopy
-from typing import Any, Dict, List, Optional, Type, Union, get_args, get_origin
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    List,
+    Optional,
+    Type,
+    Union,
+    get_args,
+    get_origin,
+)
 from zoneinfo import ZoneInfo
 
 import pandas as pd
 import pendulum
+from loguru import logger
 from pandas.api.types import is_datetime64_any_dtype
 from pydantic import (
     AwareDatetime,
     BaseModel,
     ConfigDict,
     Field,
+    PrivateAttr,
     RootModel,
     TypeAdapter,
     ValidationError,
@@ -35,6 +50,10 @@ from pydantic import (
 
 from akkudoktoreos.utils.datetimeutil import to_datetime, to_duration
 
+# Global weakref dictionary to hold external state per model instance
+# Used as a workaround for PrivateAttr not working in e.g. Mixin Classes
+_model_private_state: "weakref.WeakKeyDictionary[Union[PydanticBaseModel, PydanticModelNestedValueMixin], Dict[str, Any]]" = weakref.WeakKeyDictionary()
+
 
 def merge_models(source: BaseModel, update_dict: dict[str, Any]) -> dict[str, Any]:
     def deep_update(source_dict: dict[str, Any], update_dict: dict[str, Any]) -> dict[str, Any]:
@@ -83,13 +102,164 @@ class PydanticTypeAdapterDateTime(TypeAdapter[pendulum.DateTime]):
 
 
 class PydanticModelNestedValueMixin:
-    """A mixin providing methods to get and set nested values within a Pydantic model.
+    """A mixin providing methods to get, set and track nested values within a Pydantic model.
 
     The methods use a '/'-separated path to denote the nested values.
     Supports handling `Optional`, `List`, and `Dict` types, ensuring correct initialization of
     missing attributes.
+
+
+    Example:
+        class Address(PydanticBaseModel):
+            city: str
+
+        class User(PydanticBaseModel):
+            name: str
+            address: Address
+
+        def on_city_change(old, new, path):
+            print(f"{path}: {old} -> {new}")
+
+        user = User(name="Alice", address=Address(city="NY"))
+        user.track_nested_value("address/city", on_city_change)
+        user.set_nested_value("address/city", "LA")  # triggers callback
+
     """
 
+    def track_nested_value(self, path: str, callback: Callable[[Any, str, Any, Any], None]) -> None:
+        """Register a callback for a specific path (or subtree).
+
+        Callback triggers if set path is equal or deeper.
+
+        Args:
+            path (str): '/'-separated path to track.
+            callback (callable): Function called as callback(model_instance, set_path, old_value, new_value).
+        """
+        try:
+            self._validate_path_structure(path)
+            pass
+        except:
+            raise ValueError(f"Path '{path}' is invalid")
+        path = path.strip("/")
+        # Use private data workaround
+        # Should be:
+        #  _nested_value_callbacks: dict[str, list[Callable[[str, Any, Any], None]]]
+        #   = PrivateAttr(default_factory=dict)
+        nested_value_callbacks = get_private_attr(self, "nested_value_callbacks", dict())
+        if path not in nested_value_callbacks:
+            nested_value_callbacks[path] = []
+        nested_value_callbacks[path].append(callback)
+        set_private_attr(self, "nested_value_callbacks", nested_value_callbacks)
+
+        logger.debug("Nested value callbacks {}", nested_value_callbacks)
+
+    def _validate_path_structure(self, path: str) -> None:
+        """Validate that a '/'-separated path is structurally valid for this model.
+
+        Checks that each segment of the path corresponds to a field or index in the model's type structure,
+        without requiring that all intermediate values are currently initialized. This method is intended
+        to ensure that the path could be valid for nested access or assignment, according to the model's
+        class definition.
+
+        Args:
+            path (str): The '/'-separated attribute/index path to validate (e.g., "address/city" or "items/0/value").
+
+        Raises:
+            ValueError: If any segment of the path does not correspond to a valid field in the model,
+                or an invalid transition is made (such as an attribute on a non-model).
+
+        Example:
+            class Address(PydanticBaseModel):
+                city: str
+
+            class User(PydanticBaseModel):
+                name: str
+                address: Address
+
+            user = User(name="Alice", address=Address(city="NY"))
+            user._validate_path_structure("address/city")  # OK
+            user._validate_path_structure("address/zipcode")  # Raises ValueError
+        """
+        path_elements = path.strip("/").split("/")
+        # The model we are currently working on
+        model: Any = self
+        # The model we get the type information from. It is a pydantic BaseModel
+        parent: BaseModel = model
+        # The field that provides type information for the current key
+        # Fields may have nested types that translates to a sequence of keys, not just one
+        # - my_field: Optional[list[OtherModel]] -> e.g. "myfield/0" for index 0
+        #   parent_key = ["myfield",] ... ["myfield", "0"]
+        #   parent_key_types = [list, OtherModel]
+        parent_key: list[str] = []
+        parent_key_types: list = []
+
+        for i, key in enumerate(path_elements):
+            is_final_key = i == len(path_elements) - 1
+            # Add current key to parent key to enable nested type tracking
+            parent_key.append(key)
+
+            # Get next value
+            next_value = None
+            if isinstance(model, BaseModel):
+                # Track parent and key for possible assignment later
+                parent = model
+                parent_key = [
+                    key,
+                ]
+                parent_key_types = self._get_key_types(model.__class__, key)
+
+                # If this is the final key, set the value
+                if is_final_key:
+                    return
+
+                # Attempt to access the next attribute, handling None values
+                next_value = getattr(model, key, None)
+
+                # Handle missing values (initialize dict/list/model if necessary)
+                if next_value is None:
+                    next_type = parent_key_types[len(parent_key) - 1]
+                    next_value = self._initialize_value(next_type)
+
+            elif isinstance(model, list):
+                # Handle lists
+                try:
+                    idx = int(key)
+                except Exception as e:
+                    raise IndexError(
+                        f"Invalid list index '{key}' at '{path}': key = '{key}'; parent = '{parent}', parent_key = '{parent_key}'; model = '{model}'; {e}"
+                    )
+
+                # Get next type from parent key type information
+                next_type = parent_key_types[len(parent_key) - 1]
+
+                if len(model) > idx:
+                    next_value = model[idx]
+                else:
+                    return
+
+                if is_final_key:
+                    return
+
+            elif isinstance(model, dict):
+                # Handle dictionaries (auto-create missing keys)
+
+                # Get next type from parent key type information
+                next_type = parent_key_types[len(parent_key) - 1]
+
+                if is_final_key:
+                    return
+
+                if key not in model:
+                    return
+                else:
+                    next_value = model[key]
+
+            else:
+                raise KeyError(f"Key '{key}' not found in model.")
+
+            # Move deeper
+            model = next_value
+
     def get_nested_value(self, path: str) -> Any:
         """Retrieve a nested value from the model using a '/'-separated path.
 
@@ -128,6 +298,11 @@ class PydanticModelNestedValueMixin:
                     model = model[int(key)]
                 except (ValueError, IndexError) as e:
                     raise IndexError(f"Invalid list index at '{path}': {key}; {e}")
+            elif isinstance(model, dict):
+                try:
+                    model = model[key]
+                except Exception as e:
+                    raise KeyError(f"Invalid dict key at '{path}': {key}; {e}")
             elif isinstance(model, BaseModel):
                 model = getattr(model, key)
             else:
@@ -142,6 +317,8 @@ class PydanticModelNestedValueMixin:
         Automatically initializes missing `Optional`, `Union`, `dict`, and `list` fields if necessary.
         If a missing field cannot be initialized, raises an exception.
 
+        Triggers the callbacks registered by track_nested_value().
+
         Args:
             path (str): A '/'-separated path to the nested attribute (e.g., "key1/key2/0").
             value (Any): The new value to set.
@@ -170,6 +347,44 @@ class PydanticModelNestedValueMixin:
             print(user.settings)  # Output: {'theme': 'dark'}
             ```
         """
+        path = path.strip("/")
+        # Store old value (if possible)
+        try:
+            old_value = self.get_nested_value(path)
+        except Exception as e:
+            # We can not get the old value
+            # raise ValueError(f"Can not get old (current) value of '{path}': {e}") from e
+            old_value = None
+
+        # Proceed with core logic
+        self._set_nested_value(path, value)
+
+        # Trigger all callbacks whose path is a prefix of set path
+        triggered = set()
+        nested_value_callbacks = get_private_attr(self, "nested_value_callbacks", dict())
+        for cb_path, callbacks in nested_value_callbacks.items():
+            # Match: cb_path == path, or cb_path is a prefix (parent) of path
+            pass
+            if path == cb_path or path.startswith(cb_path + "/"):
+                for cb in callbacks:
+                    # Prevent duplicate calls
+                    if (cb_path, id(cb)) not in triggered:
+                        cb(self, path, old_value, value)
+                        triggered.add((cb_path, id(cb)))
+
+    def _set_nested_value(self, path: str, value: Any) -> None:
+        """Set a nested value core logic.
+
+        Args:
+            path (str): A '/'-separated path to the nested attribute (e.g., "key1/key2/0").
+            value (Any): The new value to set.
+
+        Raises:
+            KeyError: If a key is not found in the model.
+            IndexError: If a list index is out of bounds or invalid.
+            ValueError: If a validation error occurs.
+            TypeError: If a missing field cannot be initialized.
+        """
         path_elements = path.strip("/").split("/")
         # The model we are currently working on
         model: Any = self
@@ -191,6 +406,13 @@ class PydanticModelNestedValueMixin:
             # Get next value
             next_value = None
             if isinstance(model, BaseModel):
+                # Track parent and key for possible assignment later
+                parent = model
+                parent_key = [
+                    key,
+                ]
+                parent_key_types = self._get_key_types(model.__class__, key)
+
                 # If this is the final key, set the value
                 if is_final_key:
                     try:
@@ -199,13 +421,6 @@ class PydanticModelNestedValueMixin:
                         raise ValueError(f"Error updating model: {e}") from e
                     return
 
-                # Track parent and key for possible assignment later
-                parent = model
-                parent_key = [
-                    key,
-                ]
-                parent_key_types = self._get_key_types(model, key)
-
                 # Attempt to access the next attribute, handling None values
                 next_value = getattr(model, key, None)
 
@@ -227,7 +442,7 @@ class PydanticModelNestedValueMixin:
                     idx = int(key)
                 except Exception as e:
                     raise IndexError(
-                        f"Invalid list index '{key}' at '{path}': key = {key}; parent = {parent}, parent_key = {parent_key}; model = {model}; {e}"
+                        f"Invalid list index '{key}' at '{path}': key = '{key}'; parent = '{parent}', parent_key = '{parent_key}'; model = '{model}'; {e}"
                     )
 
                 # Get next type from parent key type information
@@ -309,6 +524,9 @@ class PydanticModelNestedValueMixin:
         Raises:
             TypeError: If the key does not exist or lacks a valid type annotation.
         """
+        if not inspect.isclass(model):
+            raise TypeError(f"Model '{model}' is not of class type.")
+
         if key not in model.model_fields:
             raise TypeError(f"Field '{key}' does not exist in model '{model.__name__}'.")
 
@@ -408,11 +626,13 @@ class PydanticModelNestedValueMixin:
         raise TypeError(f"Unsupported type hint '{type_hint}' for initialization.")
 
 
-class PydanticBaseModel(BaseModel, PydanticModelNestedValueMixin):
-    """Base model class with automatic serialization and deserialization of `pendulum.DateTime` fields.
+class PydanticBaseModel(PydanticModelNestedValueMixin, BaseModel):
+    """Base model with pendulum datetime support, nested value utilities, and stable hashing.
 
-    This model serializes pendulum.DateTime objects to ISO 8601 strings and
-    deserializes ISO 8601 strings to pendulum.DateTime objects.
+    This class provides:
+    - ISO 8601 serialization/deserialization of `pendulum.DateTime` fields.
+    - Nested attribute access and mutation via `PydanticModelNestedValueMixin`.
+    - A consistent hash using a UUID for use in sets and as dictionary keys
     """
 
     # Enable custom serialization globally in config
@@ -422,6 +642,17 @@ class PydanticBaseModel(BaseModel, PydanticModelNestedValueMixin):
         validate_assignment=True,
     )
 
+    _uuid: str = PrivateAttr(default_factory=lambda: str(uuid.uuid4()))
+    """str: A private UUID string generated on instantiation, used for hashing."""
+
+    def __hash__(self) -> int:
+        """Returns a stable hash based on the instance's UUID.
+
+        Returns:
+            int: Hash value derived from the model's UUID.
+        """
+        return hash(self._uuid)
+
     @field_validator("*", mode="before")
     def validate_and_convert_pendulum(cls, value: Any, info: ValidationInfo) -> Any:
         """Validator to convert fields of type `pendulum.DateTime`.
@@ -839,3 +1070,27 @@ class PydanticDateTimeSeries(PydanticBaseModel):
 
 class ParametersBaseModel(PydanticBaseModel):
     model_config = ConfigDict(extra="forbid")
+
+
+def set_private_attr(
+    model: Union[PydanticBaseModel, PydanticModelNestedValueMixin], key: str, value: Any
+) -> None:
+    """Set a private attribute for a model instance (not stored in model itself)."""
+    if model not in _model_private_state:
+        _model_private_state[model] = {}
+    _model_private_state[model][key] = value
+
+
+def get_private_attr(
+    model: Union[PydanticBaseModel, PydanticModelNestedValueMixin], key: str, default: Any = None
+) -> Any:
+    """Get a private attribute or return default."""
+    return _model_private_state.get(model, {}).get(key, default)
+
+
+def del_private_attr(
+    model: Union[PydanticBaseModel, PydanticModelNestedValueMixin], key: str
+) -> None:
+    """Delete a private attribute."""
+    if model in _model_private_state and key in _model_private_state[model]:
+        del _model_private_state[model][key]

src/akkudoktoreos/devices/battery.py

@@ -3,7 +3,6 @@ from typing import Any, Optional
 import numpy as np
 from pydantic import Field, field_validator
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.devices.devicesabc import (
     DeviceBase,
     DeviceOptimizeResult,
@@ -11,8 +10,6 @@ from akkudoktoreos.devices.devicesabc import (
 )
 from akkudoktoreos.utils.utils import NumpyEncoder
 
-logger = get_logger(__name__)
-
 
 def max_charging_power_field(description: Optional[str] = None) -> float:
     if description is None:

src/akkudoktoreos/devices/devices.py

@@ -1,15 +1,12 @@
 from typing import Optional
 
 from akkudoktoreos.core.coreabc import SingletonMixin
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.devices.battery import Battery
 from akkudoktoreos.devices.devicesabc import DevicesBase
 from akkudoktoreos.devices.generic import HomeAppliance
 from akkudoktoreos.devices.inverter import Inverter
 from akkudoktoreos.devices.settings import DevicesCommonSettings
 
-logger = get_logger(__name__)
-
 
 class Devices(SingletonMixin, DevicesBase):
     def __init__(self, settings: Optional[DevicesCommonSettings] = None):

src/akkudoktoreos/devices/devicesabc.py

@@ -3,6 +3,7 @@
 from enum import Enum
 from typing import Optional, Type
 
+from loguru import logger
 from pendulum import DateTime
 from pydantic import Field, computed_field
 
@@ -12,12 +13,9 @@ from akkudoktoreos.core.coreabc import (
     EnergyManagementSystemMixin,
     PredictionMixin,
 )
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import ParametersBaseModel
 from akkudoktoreos.utils.datetimeutil import to_duration
 
-logger = get_logger(__name__)
-
 
 class DeviceParameters(ParametersBaseModel):
     device_id: str = Field(description="ID of device", examples="device1")

src/akkudoktoreos/devices/generic.py

@@ -3,11 +3,8 @@ from typing import Optional
 import numpy as np
 from pydantic import Field
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.devices.devicesabc import DeviceBase, DeviceParameters
 
-logger = get_logger(__name__)
-
 
 class HomeApplianceParameters(DeviceParameters):
     """Home Appliance Device Simulation Configuration."""

src/akkudoktoreos/devices/heatpump.py

@@ -1,6 +1,6 @@
 from typing import List, Sequence
 
-from akkudoktoreos.core.logging import get_logger
+from loguru import logger
 
 
 class Heatpump:
@@ -22,7 +22,6 @@ class Heatpump:
     def __init__(self, max_heat_output: int, hours: int):
         self.max_heat_output = max_heat_output
         self.hours = hours
-        self.log = get_logger(__name__)
 
     def __check_outside_temperature_range__(self, temp_celsius: float) -> bool:
         """Check if temperature is in valid range between -100 and 100 degree Celsius.
@@ -59,7 +58,7 @@ class Heatpump:
                 f"Outside temperature '{outside_temperature_celsius}' not in range "
                 "(min: -100 Celsius, max: 100 Celsius)"
             )
-            self.log.error(err_msg)
+            logger.error(err_msg)
             raise ValueError(err_msg)
 
     def calculate_heating_output(self, outside_temperature_celsius: float) -> float:
@@ -87,7 +86,7 @@ class Heatpump:
                 f"Outside temperature '{outside_temperature_celsius}' not in range "
                 "(min: -100 Celsius, max: 100 Celsius)"
             )
-            self.log.error(err_msg)
+            logger.error(err_msg)
             raise ValueError(err_msg)
 
     def calculate_heat_power(self, outside_temperature_celsius: float) -> float:
@@ -111,7 +110,7 @@ class Heatpump:
                 f"Outside temperature '{outside_temperature_celsius}' not in range "
                 "(min: -100 Celsius, max: 100 Celsius)"
             )
-            self.log.error(err_msg)
+            logger.error(err_msg)
             raise ValueError(err_msg)
 
     def simulate_24h(self, temperatures: Sequence[float]) -> List[float]:

src/akkudoktoreos/devices/inverter.py

@@ -1,13 +1,11 @@
 from typing import Optional
 
+from loguru import logger
 from pydantic import Field
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.devices.devicesabc import DeviceBase, DeviceParameters
 from akkudoktoreos.prediction.interpolator import get_eos_load_interpolator
 
-logger = get_logger(__name__)
-
 
 class InverterParameters(DeviceParameters):
     """Inverter Device Simulation Configuration."""

src/akkudoktoreos/devices/settings.py

@@ -3,13 +3,10 @@ from typing import Optional
 from pydantic import Field
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.devices.battery import BaseBatteryParameters
 from akkudoktoreos.devices.generic import HomeApplianceParameters
 from akkudoktoreos.devices.inverter import InverterParameters
 
-logger = get_logger(__name__)
-
 
 class DevicesCommonSettings(SettingsBaseModel):
     """Base configuration for devices simulation settings."""

src/akkudoktoreos/measurement/measurement.py

@@ -9,6 +9,7 @@ The measurements can be added programmatically or imported from a file or JSON s
 from typing import Any, ClassVar, List, Optional
 
 import numpy as np
+from loguru import logger
 from numpydantic import NDArray, Shape
 from pendulum import DateTime, Duration
 from pydantic import Field, computed_field
@@ -16,11 +17,8 @@ from pydantic import Field, computed_field
 from akkudoktoreos.config.configabc import SettingsBaseModel
 from akkudoktoreos.core.coreabc import SingletonMixin
 from akkudoktoreos.core.dataabc import DataImportMixin, DataRecord, DataSequence
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.utils.datetimeutil import to_duration
 
-logger = get_logger(__name__)
-
 
 class MeasurementCommonSettings(SettingsBaseModel):
     """Measurement Configuration."""

src/akkudoktoreos/optimization/genetic.py

@@ -4,6 +4,7 @@ from typing import Any, Optional
 
 import numpy as np
 from deap import algorithms, base, creator, tools
+from loguru import logger
 from pydantic import Field, field_validator, model_validator
 from typing_extensions import Self
 
@@ -13,7 +14,6 @@ from akkudoktoreos.core.coreabc import (
     EnergyManagementSystemMixin,
 )
 from akkudoktoreos.core.ems import EnergyManagementParameters, SimulationResult
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import ParametersBaseModel
 from akkudoktoreos.devices.battery import (
     Battery,
@@ -25,8 +25,6 @@ from akkudoktoreos.devices.generic import HomeAppliance, HomeApplianceParameters
 from akkudoktoreos.devices.inverter import Inverter, InverterParameters
 from akkudoktoreos.utils.utils import NumpyEncoder
 
-logger = get_logger(__name__)
-
 
 class OptimizationParameters(ParametersBaseModel):
     ems: EnergyManagementParameters

src/akkudoktoreos/optimization/optimization.py

@@ -3,9 +3,6 @@ from typing import List, Optional
 from pydantic import Field
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
 
 
 class OptimizationCommonSettings(SettingsBaseModel):

src/akkudoktoreos/optimization/optimizationabc.py

@@ -3,11 +3,8 @@
 from pydantic import ConfigDict
 
 from akkudoktoreos.core.coreabc import ConfigMixin, PredictionMixin
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticBaseModel
 
-logger = get_logger(__name__)
-
 
 class OptimizationBase(ConfigMixin, PredictionMixin, PydanticBaseModel):
     """Base class for handling optimization data.

src/akkudoktoreos/prediction/elecpriceabc.py

@@ -9,11 +9,8 @@ from typing import List, Optional
 
 from pydantic import Field, computed_field
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.predictionabc import PredictionProvider, PredictionRecord
 
-logger = get_logger(__name__)
-
 
 class ElecPriceDataRecord(PredictionRecord):
     """Represents a electricity price data record containing various price attributes at a specific datetime.

src/akkudoktoreos/prediction/elecpriceakkudoktor.py

@@ -11,17 +11,15 @@ from typing import Any, List, Optional, Union
 import numpy as np
 import pandas as pd
 import requests
+from loguru import logger
 from pydantic import ValidationError
 from statsmodels.tsa.holtwinters import ExponentialSmoothing
 
 from akkudoktoreos.core.cache import cache_in_file
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticBaseModel
 from akkudoktoreos.prediction.elecpriceabc import ElecPriceProvider
 from akkudoktoreos.utils.datetimeutil import to_datetime, to_duration
 
-logger = get_logger(__name__)
-
 
 class AkkudoktorElecPriceMeta(PydanticBaseModel):
     start_timestamp: str

src/akkudoktoreos/prediction/elecpriceimport.py

@@ -9,15 +9,13 @@ format, enabling consistent access to forecasted and historical elecprice attrib
 from pathlib import Path
 from typing import Optional, Union
 
+from loguru import logger
 from pydantic import Field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.elecpriceabc import ElecPriceProvider
 from akkudoktoreos.prediction.predictionabc import PredictionImportProvider
 
-logger = get_logger(__name__)
-
 
 class ElecPriceImportCommonSettings(SettingsBaseModel):
     """Common settings for elecprice data import from file or JSON String."""

src/akkudoktoreos/prediction/load.py

@@ -5,13 +5,11 @@ from typing import Optional, Union
 from pydantic import Field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.loadabc import LoadProvider
 from akkudoktoreos.prediction.loadakkudoktor import LoadAkkudoktorCommonSettings
 from akkudoktoreos.prediction.loadimport import LoadImportCommonSettings
 from akkudoktoreos.prediction.prediction import get_prediction
 
-logger = get_logger(__name__)
 prediction_eos = get_prediction()
 
 # Valid load providers

src/akkudoktoreos/prediction/loadabc.py

@@ -9,11 +9,8 @@ from typing import List, Optional
 
 from pydantic import Field
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.predictionabc import PredictionProvider, PredictionRecord
 
-logger = get_logger(__name__)
-
 
 class LoadDataRecord(PredictionRecord):
     """Represents a load data record containing various load attributes at a specific datetime."""

src/akkudoktoreos/prediction/loadakkudoktor.py

@@ -3,15 +3,13 @@
 from typing import Optional
 
 import numpy as np
+from loguru import logger
 from pydantic import Field
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.loadabc import LoadProvider
 from akkudoktoreos.utils.datetimeutil import compare_datetimes, to_datetime, to_duration
 
-logger = get_logger(__name__)
-
 
 class LoadAkkudoktorCommonSettings(SettingsBaseModel):
     """Common settings for load data import from file."""

src/akkudoktoreos/prediction/loadimport.py

@@ -9,15 +9,13 @@ format, enabling consistent access to forecasted and historical load attributes.
 from pathlib import Path
 from typing import Optional, Union
 
+from loguru import logger
 from pydantic import Field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.loadabc import LoadProvider
 from akkudoktoreos.prediction.predictionabc import PredictionImportProvider
 
-logger = get_logger(__name__)
-
 
 class LoadImportCommonSettings(SettingsBaseModel):
     """Common settings for load data import from file or JSON string."""

src/akkudoktoreos/prediction/predictionabc.py

@@ -10,6 +10,7 @@ and manipulation of configuration and prediction data in a clear, scalable, and
 
 from typing import List, Optional
 
+from loguru import logger
 from pendulum import DateTime
 from pydantic import Field, computed_field
 
@@ -22,11 +23,8 @@ from akkudoktoreos.core.dataabc import (
     DataRecord,
     DataSequence,
 )
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.utils.datetimeutil import to_duration
 
-logger = get_logger(__name__)
-
 
 class PredictionBase(DataBase, MeasurementMixin):
     """Base class for handling prediction data.

src/akkudoktoreos/prediction/pvforecast.py

@@ -5,13 +5,11 @@ from typing import Any, List, Optional, Self
 from pydantic import Field, computed_field, field_validator, model_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.prediction import get_prediction
 from akkudoktoreos.prediction.pvforecastabc import PVForecastProvider
 from akkudoktoreos.prediction.pvforecastimport import PVForecastImportCommonSettings
 from akkudoktoreos.utils.docs import get_model_structure_from_examples
 
-logger = get_logger(__name__)
 prediction_eos = get_prediction()
 
 # Valid PV forecast providers

src/akkudoktoreos/prediction/pvforecastabc.py

@@ -7,13 +7,11 @@ Notes:
 from abc import abstractmethod
 from typing import List, Optional
 
+from loguru import logger
 from pydantic import Field
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.predictionabc import PredictionProvider, PredictionRecord
 
-logger = get_logger(__name__)
-
 
 class PVForecastDataRecord(PredictionRecord):
     """Represents a pvforecast data record containing various pvforecast attributes at a specific datetime."""

src/akkudoktoreos/prediction/pvforecastakkudoktor.py

@@ -78,10 +78,10 @@ Methods:
 from typing import Any, List, Optional, Union
 
 import requests
+from loguru import logger
 from pydantic import Field, ValidationError, computed_field, field_validator
 
 from akkudoktoreos.core.cache import cache_in_file
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticBaseModel
 from akkudoktoreos.prediction.pvforecastabc import (
     PVForecastDataRecord,
@@ -89,8 +89,6 @@ from akkudoktoreos.prediction.pvforecastabc import (
 )
 from akkudoktoreos.utils.datetimeutil import compare_datetimes, to_datetime
 
-logger = get_logger(__name__)
-
 
 class AkkudoktorForecastHorizon(PydanticBaseModel):
     altitude: int

src/akkudoktoreos/prediction/pvforecastimport.py

@@ -9,15 +9,13 @@ format, enabling consistent access to forecasted and historical pvforecast attri
 from pathlib import Path
 from typing import Optional, Union
 
+from loguru import logger
 from pydantic import Field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.predictionabc import PredictionImportProvider
 from akkudoktoreos.prediction.pvforecastabc import PVForecastProvider
 
-logger = get_logger(__name__)
-
 
 class PVForecastImportCommonSettings(SettingsBaseModel):
     """Common settings for pvforecast data import from file or JSON string."""

src/akkudoktoreos/prediction/weatherabc.py

@@ -14,11 +14,8 @@ import pandas as pd
 import pvlib
 from pydantic import Field
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.predictionabc import PredictionProvider, PredictionRecord
 
-logger = get_logger(__name__)
-
 
 class WeatherDataRecord(PredictionRecord):
     """Represents a weather data record containing various weather attributes at a specific datetime.

src/akkudoktoreos/prediction/weatherbrightsky.py

@@ -13,15 +13,12 @@ import numpy as np
 import pandas as pd
 import pvlib
 import requests
+from loguru import logger
 
 from akkudoktoreos.core.cache import cache_in_file
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.weatherabc import WeatherDataRecord, WeatherProvider
 from akkudoktoreos.utils.datetimeutil import to_datetime, to_duration
 
-logger = get_logger(__name__)
-
-
 WheaterDataBrightSkyMapping: List[Tuple[str, Optional[str], Optional[Union[str, float]]]] = [
     # brightsky_key, description, corr_factor
     ("timestamp", "DateTime", "to datetime in timezone"),

src/akkudoktoreos/prediction/weatherclearoutside.py

@@ -18,15 +18,12 @@ from typing import Dict, List, Optional, Tuple
 import pandas as pd
 import requests
 from bs4 import BeautifulSoup
+from loguru import logger
 
 from akkudoktoreos.core.cache import cache_in_file
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.weatherabc import WeatherDataRecord, WeatherProvider
 from akkudoktoreos.utils.datetimeutil import to_datetime, to_duration, to_timezone
 
-logger = get_logger(__name__)
-
-
 WheaterDataClearOutsideMapping: List[Tuple[str, Optional[str], Optional[float]]] = [
     # clearoutside_key, description, corr_factor
     ("DateTime", "DateTime", None),

src/akkudoktoreos/prediction/weatherimport.py

@@ -9,15 +9,13 @@ format, enabling consistent access to forecasted and historical weather attribut
 from pathlib import Path
 from typing import Optional, Union
 
+from loguru import logger
 from pydantic import Field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.predictionabc import PredictionImportProvider
 from akkudoktoreos.prediction.weatherabc import WeatherProvider
 
-logger = get_logger(__name__)
-
 
 class WeatherImportCommonSettings(SettingsBaseModel):
     """Common settings for weather data import from file or JSON string."""

src/akkudoktoreos/server/dash/admin.py

@@ -10,6 +10,7 @@ from typing import Any, Optional, Union
 
 import requests
 from fasthtml.common import Select
+from loguru import logger
 from monsterui.foundations import stringify
 from monsterui.franken import (  # Select, TODO: Select from FrankenUI does not work - using Select from FastHTML instead
     H3,
@@ -29,13 +30,10 @@ from monsterui.franken import (  # Select, TODO: Select from FrankenUI does not
 )
 from platformdirs import user_config_dir
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.server.dash.components import Error, Success
 from akkudoktoreos.server.dash.configuration import get_nested_value
 from akkudoktoreos.utils.datetimeutil import to_datetime
 
-logger = get_logger(__name__)
-
 # Directory to export files to, or to import files from
 export_import_directory = Path(user_config_dir("net.akkudoktor.eosdash", "akkudoktor"))
 

src/akkudoktoreos/server/dash/components.py

@@ -100,6 +100,7 @@ def ConfigCard(
     value: str,
     default: str,
     description: str,
+    deprecated: Optional[Union[str, bool]],
     update_error: Optional[str],
     update_value: Optional[str],
     update_open: Optional[bool],
@@ -118,6 +119,7 @@ def ConfigCard(
         value (str): The current value of the configuration.
         default (str): The default value of the configuration.
         description (str): A description of the configuration.
+        deprecated (Optional[Union[str, bool]]): The deprecated marker of the configuration.
         update_error (Optional[str]): The error message, if any, during the update process.
         update_value (Optional[str]): The value to be updated, if different from the current value.
         update_open (Optional[bool]): A flag indicating whether the update section of the card
@@ -131,6 +133,9 @@ def ConfigCard(
         update_value = value
     if not update_open:
         update_open = False
+    if deprecated:
+        if isinstance(deprecated, bool):
+            deprecated = "Deprecated"
     return Card(
         Details(
             Summary(
@@ -151,13 +156,21 @@ def ConfigCard(
             Grid(
                 P(description),
                 P(config_type),
-            ),
+            )
+            if not deprecated
+            else None,
+            Grid(
+                P(deprecated),
+                P("DEPRECATED!"),
+            )
+            if deprecated
+            else None,
             # Default
             Grid(
                 DivRAligned(P("default")),
                 P(default),
             )
-            if read_only == "rw"
+            if read_only == "rw" and not deprecated
             else None,
             # Set value
             Grid(
@@ -172,7 +185,7 @@ def ConfigCard(
                     ),
                 ),
             )
-            if read_only == "rw"
+            if read_only == "rw" and not deprecated
             else None,
             # Last error
             Grid(

src/akkudoktoreos/server/dash/configuration.py

@@ -2,6 +2,7 @@ import json
 from typing import Any, Dict, List, Optional, Sequence, TypeVar, Union
 
 import requests
+from loguru import logger
 from monsterui.franken import (
     H3,
     H4,
@@ -22,13 +23,10 @@ from pydantic.fields import ComputedFieldInfo, FieldInfo
 from pydantic_core import PydanticUndefined
 
 from akkudoktoreos.config.config import ConfigEOS
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticBaseModel
 from akkudoktoreos.prediction.pvforecast import PVForecastPlaneSetting
 from akkudoktoreos.server.dash.components import ConfigCard
 
-logger = get_logger(__name__)
-
 T = TypeVar("T")
 
 # Latest configuration update results
@@ -166,7 +164,7 @@ def configuration(
                     if found_basic:
                         continue
 
-                    config = {}
+                    config: dict[str, Optional[Any]] = {}
                     config["name"] = ".".join(values_prefix + parent_types)
                     config["value"] = json.dumps(
                         get_nested_value(values, values_prefix + parent_types, "<unknown>")
@@ -175,6 +173,9 @@ def configuration(
                     config["description"] = (
                         subfield_info.description if subfield_info.description else ""
                     )
+                    config["deprecated"] = (
+                        subfield_info.deprecated if subfield_info.deprecated else None
+                    )
                     if isinstance(subfield_info, ComputedFieldInfo):
                         config["read-only"] = "ro"
                         type_description = str(subfield_info.return_type)
@@ -319,6 +320,7 @@ def ConfigPlanesCard(
                     config["value"],
                     config["default"],
                     config["description"],
+                    config["deprecated"],
                     update_error,
                     update_value,
                     update_open,
@@ -457,6 +459,7 @@ def Configuration(
         if (
             config["type"]
             == "Optional[list[akkudoktoreos.prediction.pvforecast.PVForecastPlaneSetting]]"
+            and not config["deprecated"]
         ):
             # Special configuration for PV planes
             rows.append(
@@ -482,6 +485,7 @@ def Configuration(
                     config["value"],
                     config["default"],
                     config["description"],
+                    config["deprecated"],
                     update_error,
                     update_value,
                     update_open,

src/akkudoktoreos/server/dash/demo.py

@@ -8,7 +8,6 @@ from bokeh.models import ColumnDataSource, LinearAxis, Range1d
 from bokeh.plotting import figure
 from monsterui.franken import FT, Grid, P
 
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.pydantic import PydanticDateTimeDataFrame
 from akkudoktoreos.server.dash.bokeh import Bokeh
 
@@ -17,8 +16,6 @@ FILE_DEMOCONFIG = DIR_DEMODATA.joinpath("democonfig.json")
 if not FILE_DEMOCONFIG.exists():
     raise ValueError(f"File does not exist: {FILE_DEMOCONFIG}")
 
-logger = get_logger(__name__)
-
 # bar width for 1 hour bars (time given in millseconds)
 BAR_WIDTH_1HOUR = 1000 * 60 * 60
 
@@ -76,25 +73,37 @@ def DemoElectricityPriceForecast(predictions: pd.DataFrame, config: dict) -> FT:
     return Bokeh(plot)
 
 
-def DemoWeatherTempAir(predictions: pd.DataFrame, config: dict) -> FT:
+def DemoWeatherTempAirHumidity(predictions: pd.DataFrame, config: dict) -> FT:
     source = ColumnDataSource(predictions)
     provider = config["weather"]["provider"]
 
     plot = figure(
         x_axis_type="datetime",
-        y_range=Range1d(
-            predictions["weather_temp_air"].min() - 1.0, predictions["weather_temp_air"].max() + 1.0
-        ),
-        title=f"Air Temperature Prediction ({provider})",
+        title=f"Air Temperature and Humidity Prediction ({provider})",
         x_axis_label="Datetime",
         y_axis_label="Temperature [°C]",
         sizing_mode="stretch_width",
         height=400,
     )
+    # Add secondary y-axis for humidity
+    plot.extra_y_ranges["humidity"] = Range1d(start=-5, end=105)
+    y2_axis = LinearAxis(y_range_name="humidity", axis_label="Relative Humidity [%]")
+    y2_axis.axis_label_text_color = "green"
+    plot.add_layout(y2_axis, "left")
+
     plot.line(
         "date_time", "weather_temp_air", source=source, legend_label="Air Temperature", color="blue"
     )
 
+    plot.line(
+        "date_time",
+        "weather_relative_humidity",
+        source=source,
+        legend_label="Relative Humidity [%]",
+        color="green",
+        y_range_name="humidity",
+    )
+
     return Bokeh(plot)
 
 
@@ -150,7 +159,10 @@ def DemoLoad(predictions: pd.DataFrame, config: dict) -> FT:
         sizing_mode="stretch_width",
         height=400,
     )
-    plot.extra_y_ranges["stddev"] = Range1d(0, 1000)
+    # Add secondary y-axis for stddev
+    stddev_min = predictions["load_std"].min()
+    stddev_max = predictions["load_std"].max()
+    plot.extra_y_ranges["stddev"] = Range1d(start=stddev_min - 5, end=stddev_max + 5)
     y2_axis = LinearAxis(y_range_name="stddev", axis_label="Load Standard Deviation [W]")
     y2_axis.axis_label_text_color = "green"
     plot.add_layout(y2_axis, "left")
@@ -230,6 +242,7 @@ def Demo(eos_host: str, eos_port: Union[str, int]) -> str:
             "keys": [
                 "pvforecast_ac_power",
                 "elecprice_marketprice_kwh",
+                "weather_relative_humidity",
                 "weather_temp_air",
                 "weather_ghi",
                 "weather_dni",
@@ -260,7 +273,7 @@ def Demo(eos_host: str, eos_port: Union[str, int]) -> str:
     return Grid(
         DemoPVForecast(predictions, democonfig),
         DemoElectricityPriceForecast(predictions, democonfig),
-        DemoWeatherTempAir(predictions, democonfig),
+        DemoWeatherTempAirHumidity(predictions, democonfig),
         DemoWeatherIrradiance(predictions, democonfig),
         DemoLoad(predictions, democonfig),
         cols_max=2,

src/akkudoktoreos/server/dash/footer.py

@@ -1,14 +1,13 @@
 from typing import Optional, Union
 
 import requests
+from loguru import logger
 from monsterui.daisy import Loading, LoadingT
 from monsterui.franken import A, ButtonT, DivFullySpaced, P
 from requests.exceptions import RequestException
 
 from akkudoktoreos.config.config import get_config
-from akkudoktoreos.core.logging import get_logger
 
-logger = get_logger(__name__)
 config_eos = get_config()
 
 

src/akkudoktoreos/server/eos.py

@@ -25,11 +25,13 @@ from fastapi.responses import (
     RedirectResponse,
     Response,
 )
+from loguru import logger
 
 from akkudoktoreos.config.config import ConfigEOS, SettingsEOS, get_config
 from akkudoktoreos.core.cache import CacheFileStore
 from akkudoktoreos.core.ems import get_ems
-from akkudoktoreos.core.logging import get_logger
+from akkudoktoreos.core.logabc import LOGGING_LEVELS
+from akkudoktoreos.core.logging import read_file_log, track_logging_config
 from akkudoktoreos.core.pydantic import (
     PydanticBaseModel,
     PydanticDateTimeData,
@@ -56,7 +58,6 @@ from akkudoktoreos.server.server import (
 )
 from akkudoktoreos.utils.datetimeutil import to_datetime, to_duration
 
-logger = get_logger(__name__)
 config_eos = get_config()
 measurement_eos = get_measurement()
 prediction_eos = get_prediction()
@@ -66,6 +67,14 @@ ems_eos = get_ems()
 args = None
 
 
+# ----------------------
+# Logging configuration
+# ----------------------
+
+logger.remove()
+track_logging_config(config_eos, "logging", None, None)
+config_eos.track_nested_value("/logging", track_logging_config)
+
 # ----------------------
 # EOSdash server startup
 # ----------------------
@@ -177,18 +186,32 @@ def cache_save() -> dict:
     return CacheFileStore().save_store()
 
 
-@repeat_every(seconds=float(config_eos.cache.cleanup_interval))
+def cache_cleanup_on_exception(e: Exception) -> None:
+    logger.error("Cache cleanup task caught an exception: {}", e, exc_info=True)
+
+
+@repeat_every(
+    seconds=float(config_eos.cache.cleanup_interval),
+    on_exception=cache_cleanup_on_exception,
+)
 def cache_cleanup_task() -> None:
     """Repeating task to clear cache from expired cache files."""
+    logger.debug("Clear cache")
     cache_clear()
 
 
+def energy_management_on_exception(e: Exception) -> None:
+    logger.error("Energy management task caught an exception: {}", e, exc_info=True)
+
+
 @repeat_every(
     seconds=10,
     wait_first=config_eos.ems.startup_delay,
+    on_exception=energy_management_on_exception,
 )
 def energy_management_task() -> None:
     """Repeating task for energy management."""
+    logger.debug("Check EMS run")
     ems_eos.manage_energy()
 
 
@@ -219,6 +242,7 @@ async def server_shutdown_task() -> None:
         os.kill(pid, signal.SIGTERM)  # type: ignore[attr-defined,unused-ignore]
 
     logger.info(f"🚀 EOS terminated, PID {pid}")
+    sys.exit(0)
 
 
 @asynccontextmanager
@@ -544,6 +568,52 @@ def fastapi_config_get_key(
         raise HTTPException(status_code=400, detail=str(e))
 
 
+@app.get("/v1/logging/log", tags=["logging"])
+async def fastapi_logging_get_log(
+    limit: int = Query(100, description="Maximum number of log entries to return."),
+    level: Optional[str] = Query(None, description="Filter by log level (e.g., INFO, ERROR)."),
+    contains: Optional[str] = Query(None, description="Filter logs containing this substring."),
+    regex: Optional[str] = Query(None, description="Filter logs by matching regex in message."),
+    from_time: Optional[str] = Query(
+        None, description="Start time (ISO format) for filtering logs."
+    ),
+    to_time: Optional[str] = Query(None, description="End time (ISO format) for filtering logs."),
+    tail: bool = Query(False, description="If True, returns the most recent lines (tail mode)."),
+) -> JSONResponse:
+    """Get structured log entries from the EOS log file.
+
+    Filters and returns log entries based on the specified query parameters. The log
+    file is expected to contain newline-delimited JSON entries.
+
+    Args:
+        limit (int): Maximum number of entries to return.
+        level (Optional[str]): Filter logs by severity level (e.g., DEBUG, INFO).
+        contains (Optional[str]): Return only logs that include this string in the message.
+        regex (Optional[str]): Return logs that match this regular expression in the message.
+        from_time (Optional[str]): ISO 8601 timestamp to filter logs not older than this.
+        to_time (Optional[str]): ISO 8601 timestamp to filter logs not newer than this.
+        tail (bool): If True, fetch the most recent log entries (like `tail`).
+
+    Returns:
+        JSONResponse: A JSON list of log entries.
+    """
+    log_path = config_eos.logging.file_path
+    try:
+        logs = read_file_log(
+            log_path=log_path,
+            limit=limit,
+            level=level,
+            contains=contains,
+            regex=regex,
+            from_time=from_time,
+            to_time=to_time,
+            tail=tail,
+        )
+        return JSONResponse(content=logs)
+    except Exception as e:
+        return JSONResponse(content={"error": str(e)}, status_code=500)
+
+
 @app.get("/v1/measurement/keys", tags=["measurement"])
 def fastapi_measurement_keys_get() -> list[str]:
     """Get a list of available measurement keys."""
@@ -1245,45 +1315,46 @@ Did you want to connect to <a href="{url}" class="back-button">EOSdash</a>?
     return RedirectResponse(url="/docs", status_code=303)
 
 
-def run_eos(host: str, port: int, log_level: str, access_log: bool, reload: bool) -> None:
+def run_eos(host: str, port: int, log_level: str, reload: bool) -> None:
     """Run the EOS server with the specified configurations.
 
-    This function starts the EOS server using the Uvicorn ASGI server. It accepts
-    arguments for the host, port, log level, access log, and reload options. The
-    log level is converted to lowercase to ensure compatibility with Uvicorn's
-    expected log level format. If an error occurs while attempting to bind the
-    server to the specified host and port, an error message is logged and the
-    application exits.
+    Starts the EOS server using the Uvicorn ASGI server. Logs an error and exits if
+    binding to the host and port fails.
 
-    Parameters:
-    host (str): The hostname to bind the server to.
-    port (int): The port number to bind the server to.
-    log_level (str): The log level for the server. Options include "critical", "error",
-                     "warning", "info", "debug", and "trace".
-    access_log (bool): Whether to enable or disable the access log. Set to True to enable.
-    reload (bool): Whether to enable or disable auto-reload. Set to True for development.
+    Args:
+        host (str): Hostname to bind the server to.
+        port (int): Port number to bind the server to.
+        log_level (str): Log level for the server. One of
+            "critical", "error", "warning", "info", "debug", or "trace".
+        reload (bool): Enable or disable auto-reload. True for development.
 
     Returns:
-    None
+        None
     """
     # Make hostname Windows friendly
     if host == "0.0.0.0" and os.name == "nt":  # noqa: S104
         host = "localhost"
 
+    # Setup console logging level using nested value
+    # - triggers logging configuration by track_logging_config
+    if log_level.upper() in LOGGING_LEVELS:
+        config_eos.set_nested_value("logging/console_level", log_level.upper())
+
     # Wait for EOS port to be free - e.g. in case of restart
     wait_for_port_free(port, timeout=120, waiting_app_name="EOS")
 
     try:
+        # Let uvicorn run the fastAPI app
         uvicorn.run(
             "akkudoktoreos.server.eos:app",
             host=host,
             port=port,
-            log_level=log_level.lower(),  # Convert log_level to lowercase
-            access_log=access_log,
+            log_level="info",
+            access_log=True,
             reload=reload,
         )
     except Exception as e:
-        logger.error(f"Could not bind to host {host}:{port}. Error: {e}")
+        logger.exception("Failed to start uvicorn server.")
         raise e
 
 
@@ -1298,7 +1369,7 @@ def main() -> None:
     Command-line Arguments:
     --host (str): Host for the EOS server (default: value from config).
     --port (int): Port for the EOS server (default: value from config).
-    --log_level (str): Log level for the server. Options: "critical", "error", "warning", "info", "debug", "trace" (default: "info").
+    --log_level (str): Log level for the server console. Options: "critical", "error", "warning", "info", "debug", "trace" (default: "info").
     --access_log (bool): Enable or disable access log. Options: True or False (default: False).
     --reload (bool): Enable or disable auto-reload. Useful for development. Options: True or False (default: False).
     """
@@ -1322,14 +1393,8 @@ def main() -> None:
     parser.add_argument(
         "--log_level",
         type=str,
-        default="info",
-        help='Log level for the server. Options: "critical", "error", "warning", "info", "debug", "trace" (default: "info")',
-    )
-    parser.add_argument(
-        "--access_log",
-        type=bool,
-        default=False,
-        help="Enable or disable access log. Options: True or False (default: True)",
+        default="none",
+        help='Log level for the server console. Options: "critical", "error", "warning", "info", "debug", "trace" (default: "none")',
     )
     parser.add_argument(
         "--reload",
@@ -1344,7 +1409,7 @@ def main() -> None:
     port = args.port if args.port else 8503
 
     try:
-        run_eos(host, port, args.log_level, args.access_log, args.reload)
+        run_eos(host, port, args.log_level, args.reload)
     except:
         sys.exit(1)
 

src/akkudoktoreos/server/eosdash.py

@@ -8,10 +8,10 @@ from typing import Optional
 import psutil
 import uvicorn
 from fasthtml.common import FileResponse, JSONResponse
+from loguru import logger
 from monsterui.core import FastHTML, Theme
 
 from akkudoktoreos.config.config import get_config
-from akkudoktoreos.core.logging import get_logger
 
 # Pages
 from akkudoktoreos.server.dash.admin import Admin
@@ -23,7 +23,6 @@ from akkudoktoreos.server.dash.footer import Footer
 from akkudoktoreos.server.dash.hello import Hello
 from akkudoktoreos.server.server import get_default_host, wait_for_port_free
 
-logger = get_logger(__name__)
 config_eos = get_config()
 
 # The favicon for EOSdash

src/akkudoktoreos/server/server.py

@@ -6,12 +6,10 @@ import time
 from typing import Optional, Union
 
 import psutil
+from loguru import logger
 from pydantic import Field, IPvAnyAddress, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
 
 
 def get_default_host() -> str:

src/akkudoktoreos/utils/datetimeutil.py

@@ -27,13 +27,11 @@ from datetime import date, datetime, timedelta
 from typing import Any, List, Literal, Optional, Tuple, Union, overload
 
 import pendulum
+from loguru import logger
 from pendulum import Date, DateTime, Duration
 from pendulum.tz.timezone import Timezone
 from timezonefinder import TimezoneFinder
 
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
 MAX_DURATION_STRING_LENGTH = 350
 
 
@@ -154,22 +152,22 @@ def to_datetime(
                 fmt_tz = f"{fmt} z"
                 dt_tz = f"{date_input} {in_timezone}"
                 dt = pendulum.from_format(dt_tz, fmt_tz)
-                logger.debug(
+                logger.trace(
                     f"Str Fmt converted: {dt}, tz={dt.tz} from {date_input}, tz={in_timezone}"
                 )
                 break
             except ValueError as e:
-                logger.debug(f"{date_input}, {fmt}, {e}")
+                logger.trace(f"{date_input}, {fmt}, {e}")
                 dt = None
         else:
             # DateTime input with timezone info
             try:
                 dt = pendulum.parse(date_input)
-                logger.debug(
+                logger.trace(
                     f"Pendulum Fmt converted: {dt}, tz={dt.tz} from {date_input}, tz={in_timezone}"
                 )
             except pendulum.parsing.exceptions.ParserError as e:
-                logger.debug(f"Date string {date_input} does not match any Pendulum formats: {e}")
+                logger.trace(f"Date string {date_input} does not match any Pendulum formats: {e}")
                 dt = None
         if dt is None:
             # Some special values
@@ -181,7 +179,7 @@ def to_datetime(
                 timestamp = float(date_input)
                 dt = pendulum.from_timestamp(timestamp, tz="UTC")
             except (ValueError, TypeError) as e:
-                logger.debug(f"Date string {date_input} does not match timestamp format: {e}")
+                logger.trace(f"Date string {date_input} does not match timestamp format: {e}")
                 dt = None
         if dt is None:
             raise ValueError(f"Date string {date_input} does not match any known formats.")
@@ -202,7 +200,7 @@ def to_datetime(
 
     # Represent in target timezone
     dt_in_tz = dt.in_timezone(in_timezone)
-    logger.debug(
+    logger.trace(
         f"\nTimezone adapted to: {in_timezone}\nfrom: {dt} tz={dt.timezone}\nto:   {dt_in_tz} tz={dt_in_tz.tz}"
     )
     dt = dt_in_tz
@@ -277,7 +275,7 @@ def to_duration(
             duration = pendulum.parse(input_value)
             return duration - duration.start_of("day")
         except pendulum.parsing.exceptions.ParserError as e:
-            logger.debug(f"Invalid Pendulum time string format '{input_value}': {e}")
+            logger.trace(f"Invalid Pendulum time string format '{input_value}': {e}")
 
         # Handle strings like "2 days 5 hours 30 minutes"
         total_seconds = 0

src/akkudoktoreos/utils/docs.py

@@ -35,6 +35,8 @@ def get_model_structure_from_examples(
     example_data: list[dict[str, Any]] = [{} for _ in range(example_max_length)]
 
     for field_name, field_info in model_class.model_fields.items():
+        if field_info.deprecated:
+            continue
         for example_ix in range(example_max_length):
             example_data[example_ix][field_name] = get_example_or_default(
                 field_name, field_info, example_ix

src/akkudoktoreos/utils/utils.py

@@ -4,9 +4,6 @@ from typing import Any
 import numpy as np
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
 
 
 class UtilsCommonSettings(SettingsBaseModel):

src/akkudoktoreos/utils/visualize.py

@@ -13,16 +13,17 @@ from matplotlib.backends.backend_pdf import PdfPages
 
 from akkudoktoreos.core.coreabc import ConfigMixin
 from akkudoktoreos.core.ems import EnergyManagement
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.optimization.genetic import OptimizationParameters
 from akkudoktoreos.utils.datetimeutil import to_datetime
 
-logger = get_logger(__name__)
 matplotlib.use(
     "Agg"
 )  # non-interactive backend that can only write to files, backend needed to stay in main thread.
 
 
+debug_visualize: bool = False
+
+
 class VisualizationReport(ConfigMixin):
     def __init__(
         self,
@@ -440,6 +441,8 @@ def prepare_visualize(
     filename: str = "visualization_results.pdf",
     start_hour: int = 0,
 ) -> None:
+    global debug_visualize
+
     report = VisualizationReport(filename)
     next_full_hour_date = EnergyManagement.set_start_datetime()
     # Group 1:
@@ -642,7 +645,7 @@ def prepare_visualize(
 
     if filtered_balance.size > 0 or filtered_losses.size > 0:
         report.finalize_group()
-    if logger.level == "DEBUG" or results["fixed_seed"]:
+    if debug_visualize or results["fixed_seed"]:
         report.create_line_chart(
             0,
             [
@@ -667,6 +670,8 @@ def prepare_visualize(
 
 def generate_example_report(filename: str = "example_report.pdf") -> None:
     """Generate example visualization report."""
+    global debug_visualize
+
     report = VisualizationReport(filename, "test")
     x_hours = 0  # Define x-axis start values (e.g., hours)
 
@@ -738,9 +743,9 @@ def generate_example_report(filename: str = "example_report.pdf") -> None:
 
     report.finalize_group()  # Finalize the third group of charts
 
-    logger.setLevel("DEBUG")  # set level for example report
+    debug_visualize = True  # set level for example report
 
-    if logger.level == "DEBUG":
+    if debug_visualize:
         report.create_line_chart(
             x_hours,
             [np.array([0.2, 0.25, 0.3, 0.35])],

tests/conftest.py

@@ -16,35 +16,75 @@ import pendulum
 import psutil
 import pytest
 import requests
+from _pytest.logging import LogCaptureFixture
+from loguru import logger
 from xprocess import ProcessStarter, XProcess
 
 from akkudoktoreos.config.config import ConfigEOS, get_config
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.server.server import get_default_host
 
-logger = get_logger(__name__)
+# -----------------------------------------------
+# Adapt pytest logging handling to Loguru logging
+# -----------------------------------------------
+
+@pytest.fixture
+def caplog(caplog: LogCaptureFixture):
+    """Propagate Loguru logs to the pytest caplog handler."""
+    handler_id = logger.add(
+        caplog.handler,
+        format="{message}",
+        level=0,
+        filter=lambda record: record["level"].no >= caplog.handler.level,
+        enqueue=False,  # Set to 'True' if your test is spawning child processes.
+    )
+    yield caplog
+    try:
+        logger.remove(handler_id)
+    except:
+        # May already be deleted
+        pass
+
+
+@pytest.fixture
+def reportlog(pytestconfig):
+    """Propagate Loguru logs to the pytest terminal reporter."""
+    logging_plugin = pytestconfig.pluginmanager.getplugin("logging-plugin")
+    handler_id = logger.add(logging_plugin.report_handler, format="{message}")
+    yield
+    try:
+        logger.remove(handler_id)
+    except:
+        # May already be deleted
+        pass
+
+
+@pytest.fixture(autouse=True)
+def propagate_logs():
+    """Deal with the pytest --log-cli-level command-line flag.
+
+    This option controls the standard logging logs, not loguru ones.
+    For this reason, we first install a PropagateHandler for compatibility.
+    """
+    class PropagateHandler(logging.Handler):
+        def emit(self, record):
+            if logging.getLogger(record.name).isEnabledFor(record.levelno):
+                logging.getLogger(record.name).handle(record)
+
+    logger.remove()
+    logger.add(PropagateHandler(), format="{message}")
+    yield
 
 
 @pytest.fixture()
 def disable_debug_logging(scope="session", autouse=True):
     """Automatically disable debug logging for all tests."""
-    original_levels = {}
-    root_logger = logging.getLogger()
+    logger.remove()  # Remove all loggers
+    logger.add(sys.stderr, level="INFO")  # Only show INFO and above
 
-    original_levels[root_logger] = root_logger.level
-    root_logger.setLevel(logging.INFO)
-
-    for logger_name, logger in logging.root.manager.loggerDict.items():
-        if isinstance(logger, logging.Logger):
-            original_levels[logger] = logger.level
-            if logger.level <= logging.DEBUG:
-                logger.setLevel(logging.INFO)
-
-    yield
-
-    for logger, level in original_levels.items():
-        logger.setLevel(level)
 
+# -----------------------------------------------
+# Provide pytest options for specific test setups
+# -----------------------------------------------
 
 def pytest_addoption(parser):
     parser.addoption(
@@ -144,6 +184,7 @@ def cfg_non_existent(request):
 
 @pytest.fixture(autouse=True)
 def user_cwd(config_default_dirs):
+    """Patch cwd provided by module pathlib.Path.cwd."""
     with patch(
         "pathlib.Path.cwd",
         return_value=config_default_dirs[1],
@@ -153,6 +194,7 @@ def user_cwd(config_default_dirs):
 
 @pytest.fixture(autouse=True)
 def user_config_dir(config_default_dirs):
+    """Patch user_config_dir provided by module platformdirs."""
     with patch(
         "akkudoktoreos.config.config.user_config_dir",
         return_value=str(config_default_dirs[0]),
@@ -162,6 +204,7 @@ def user_config_dir(config_default_dirs):
 
 @pytest.fixture(autouse=True)
 def user_data_dir(config_default_dirs):
+    """Patch user_data_dir provided by module platformdirs."""
     with patch(
         "akkudoktoreos.config.config.user_data_dir",
         return_value=str(config_default_dirs[-1] / "data"),
@@ -189,14 +232,18 @@ def config_eos(
     config_file_cwd = config_default_dirs[1] / ConfigEOS.CONFIG_FILE_NAME
     assert not config_file.exists()
     assert not config_file_cwd.exists()
+
     config_eos = get_config()
     config_eos.reset_settings()
     assert config_file == config_eos.general.config_file_path
     assert config_file.exists()
     assert not config_file_cwd.exists()
+
+    # Check user data directory pathes (config_default_dirs[-1] == data_default_dir_user)
     assert config_default_dirs[-1] / "data" == config_eos.general.data_folder_path
     assert config_default_dirs[-1] / "data/cache" == config_eos.cache.path()
     assert config_default_dirs[-1] / "data/output" == config_eos.general.data_output_path
+    assert config_default_dirs[-1] / "data/output/eos.log" == config_eos.logging.file_path
     return config_eos
 
 

tests/test_config.py

@@ -4,12 +4,10 @@ from typing import Union
 from unittest.mock import patch
 
 import pytest
+from loguru import logger
 from pydantic import ValidationError
 
 from akkudoktoreos.config.config import ConfigEOS, GeneralSettings
-from akkudoktoreos.core.logging import get_logger
-
-logger = get_logger(__name__)
 
 
 # overwrite config_mixin fixture from conftest

tests/test_dataabc.py

@@ -156,7 +156,7 @@ class TestDataRecord:
         assert "data_value" in record_dict
         assert record_dict["data_value"] == 20.0
         record2 = DerivedRecord.from_dict(record_dict)
-        assert record2 == record
+        assert record2.model_dump() == record.model_dump()
 
     def test_to_json(self):
         record = self.create_test_record(datetime(2024, 1, 3, tzinfo=timezone.utc), 10.0)
@@ -165,7 +165,7 @@ class TestDataRecord:
         assert "data_value" in json_str
         assert "20.0" in json_str
         record2 = DerivedRecord.from_json(json_str)
-        assert record2 == record
+        assert record2.model_dump() == record.model_dump()
 
 
 class TestDataSequence:
@@ -526,7 +526,7 @@ class TestDataSequence:
         data_dict = sequence.to_dict()
         assert isinstance(data_dict, dict)
         sequence_other = sequence.from_dict(data_dict)
-        assert sequence_other == sequence
+        assert sequence_other.model_dump() == sequence.model_dump()
 
     def test_to_json(self, sequence):
         record = self.create_test_record(datetime(2023, 11, 6), 0.8)

tests/test_elecpriceakkudoktor.py

@@ -5,10 +5,10 @@ from unittest.mock import Mock, patch
 import numpy as np
 import pytest
 import requests
+from loguru import logger
 
 from akkudoktoreos.core.cache import CacheFileStore
 from akkudoktoreos.core.ems import get_ems
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.elecpriceakkudoktor import (
     AkkudoktorElecPrice,
     AkkudoktorElecPriceValue,
@@ -22,8 +22,6 @@ FILE_TESTDATA_ELECPRICEAKKUDOKTOR_1_JSON = DIR_TESTDATA.joinpath(
     "elecpriceforecast_akkudoktor_1.json"
 )
 
-logger = get_logger(__name__)
-
 
 @pytest.fixture
 def provider(monkeypatch, config_eos):
@@ -94,7 +92,7 @@ def test_request_forecast(mock_get, provider, sample_akkudoktor_1_json):
     akkudoktor_data = provider._request_forecast()
 
     assert isinstance(akkudoktor_data, AkkudoktorElecPrice)
-    assert akkudoktor_data.values[0] == AkkudoktorElecPriceValue(
+    assert akkudoktor_data.values[0].model_dump() == AkkudoktorElecPriceValue(
         start_timestamp=1733785200000,
         end_timestamp=1733788800000,
         start="2024-12-09T23:00:00.000Z",
@@ -102,7 +100,7 @@ def test_request_forecast(mock_get, provider, sample_akkudoktor_1_json):
         marketprice=92.85,
         unit="Eur/MWh",
         marketpriceEurocentPerKWh=9.29,
-    )
+    ).model_dump()
 
 
 @patch("requests.get")

tests/test_logging.py

@@ -1,69 +1,35 @@
 """Test Module for logging Module."""
-
 import logging
-from logging.handlers import RotatingFileHandler
+import os
+import sys
 from pathlib import Path
+from unittest.mock import patch
 
 import pytest
+from loguru import logger
 
-from akkudoktoreos.core.logging import get_logger
+from akkudoktoreos.core.logging import track_logging_config
 
 # -----------------------------
-# get_logger
+# logsettings
 # -----------------------------
 
+class TestLoggingCommonSettings:
+    def teardown_method(self):
+        """Reset Loguru after each test to avoid handler contamination."""
+        logger.remove()
 
-def test_get_logger_console_logging():
-    """Test logger creation with console logging."""
-    logger = get_logger("test_logger", logging_level="DEBUG")
+    def test_valid_console_level_sets_logging(self, config_eos, caplog):
+        config_eos.track_nested_value("/logging", track_logging_config)
+        config_eos.set_nested_value("/logging/console_level", "INFO")
+        assert config_eos.get_nested_value("/logging/console_level") == "INFO"
+        assert config_eos.logging.console_level == "INFO"
+        assert any("console: INFO" in message for message in caplog.messages)
 
-    # Check logger name
-    assert logger.name == "test_logger"
-
-    # Check logger level
-    assert logger.level == logging.DEBUG
-
-    # Check console handler is present
-    assert len(logger.handlers) == 1
-    assert isinstance(logger.handlers[0], logging.StreamHandler)
-
-
-def test_get_logger_file_logging(tmpdir):
-    """Test logger creation with file logging."""
-    log_file = Path(tmpdir).joinpath("test.log")
-    logger = get_logger("test_logger", log_file=str(log_file), logging_level="WARNING")
-
-    # Check logger name
-    assert logger.name == "test_logger"
-
-    # Check logger level
-    assert logger.level == logging.WARNING
-
-    # Check console handler is present
-    assert len(logger.handlers) == 2  # One for console and one for file
-    assert isinstance(logger.handlers[0], logging.StreamHandler)
-    assert isinstance(logger.handlers[1], RotatingFileHandler)
-
-    # Check file existence
-    assert log_file.exists()
-
-
-def test_get_logger_no_file_logging():
-    """Test logger creation without file logging."""
-    logger = get_logger("test_logger")
-
-    # Check logger name
-    assert logger.name == "test_logger"
-
-    # Check logger level
-    assert logger.level == logging.INFO
-
-    # Check no file handler is present
-    assert len(logger.handlers) >= 1  # First is console handler (maybe be pytest handler)
-    assert isinstance(logger.handlers[0], logging.StreamHandler)
-
-
-def test_get_logger_with_invalid_level():
-    """Test logger creation with an invalid logging level."""
-    with pytest.raises(ValueError, match="Unknown loggin level: INVALID"):
-        logger = get_logger("test_logger", logging_level="INVALID")
+    def test_valid_console_level_calls_tracking_callback(self, config_eos):
+        with patch("akkudoktoreos.core.logging.track_logging_config") as mock_setup:
+            config_eos.track_nested_value("/logging", mock_setup)
+            config_eos.set_nested_value("/logging/console_level", "INFO")
+            assert config_eos.get_nested_value("/logging/console_level") == "INFO"
+            assert config_eos.logging.console_level == "INFO"
+            mock_setup.assert_called_once()

tests/test_pvforecastakkudoktor.py

@@ -3,9 +3,9 @@ from pathlib import Path
 from unittest.mock import Mock, patch
 
 import pytest
+from loguru import logger
 
 from akkudoktoreos.core.ems import get_ems
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.prediction.prediction import get_prediction
 from akkudoktoreos.prediction.pvforecastakkudoktor import (
     AkkudoktorForecastHorizon,
@@ -24,8 +24,6 @@ FILE_TESTDATA_PV_FORECAST_INPUT_SINGLE_PLANE = DIR_TESTDATA.joinpath(
 )
 FILE_TESTDATA_PV_FORECAST_RESULT_1 = DIR_TESTDATA.joinpath("pv_forecast_result_1.txt")
 
-logger = get_logger(__name__)
-
 
 @pytest.fixture
 def sample_settings(config_eos):

tests/test_pydantic.py

@@ -66,6 +66,11 @@ class TestPydanticModelNestedValueMixin:
         with pytest.raises(TypeError):
             PydanticModelNestedValueMixin._get_key_types(User, "unknown_field")
 
+    def test_get_key_types_for_instance_raises(self, user_instance):
+        """Test _get_key_types raises an error for an instance."""
+        with pytest.raises(TypeError):
+            PydanticModelNestedValueMixin._get_key_types(user_instance, "unknown_field")
+
     def test_set_nested_value_in_model(self, user_instance):
         """Test setting nested value in a model field (Address -> city)."""
         assert user_instance.addresses is None
@@ -123,7 +128,7 @@ class TestPydanticModelNestedValueMixin:
         """Test attempting to set value for a non-existent field."""
         user = User(name="John")
 
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeError):
             user.set_nested_value("non_existent_field", "Some Value")
 
     def test_set_nested_value_with_invalid_type(self, user_instance):
@@ -144,6 +149,91 @@ class TestPydanticModelNestedValueMixin:
             "The first address should be an instance of Address"
         )
 
+    def test_track_nested_value_simple_callback(self, user_instance):
+        user_instance.set_nested_value("addresses/0/city", "NY")
+        assert user_instance.addresses is not None
+        assert user_instance.addresses[0].city == "NY"
+
+        callback_calls = []
+        def cb(model, path, old, new):
+            callback_calls.append((path, old, new))
+
+        user_instance.track_nested_value("addresses/0/city", cb)
+        user_instance.set_nested_value("addresses/0/city", "LA")
+        assert user_instance.addresses is not None
+        assert user_instance.addresses[0].city == "LA"
+        assert callback_calls == [("addresses/0/city", "NY", "LA")]
+
+    def test_track_nested_value_prefix_triggers(self, user_instance):
+        user_instance.set_nested_value("addresses/0", Address(city="Berlin", postal_code="10000"))
+        assert user_instance.addresses is not None
+        assert user_instance.addresses[0].city == "Berlin"
+
+        cb_prefix = []
+        cb_exact = []
+
+        def cb1(model, path, old, new):
+            cb_prefix.append((path, old, new))
+        def cb2(model, path, old, new):
+            cb_exact.append((path, old, new))
+
+        user_instance.track_nested_value("addresses/0", cb1)
+        user_instance.track_nested_value("addresses/0/city", cb2)
+        user_instance.set_nested_value("addresses/0/city", "Munich")
+        assert user_instance.addresses is not None
+        assert user_instance.addresses[0].city == "Munich"
+
+        # Both callbacks should be triggered
+        assert cb_prefix == [("addresses/0/city", "Berlin", "Munich")]
+        assert cb_exact == [("addresses/0/city", "Berlin", "Munich")]
+
+    def test_track_nested_value_multiple_callbacks_same_path(self, user_instance):
+        user_instance.set_nested_value("addresses/0/city", "Berlin")
+        calls1 = []
+        calls2 = []
+
+        user_instance.track_nested_value("addresses/0/city", lambda lib, path, o, n: calls1.append((path, o, n)))
+        user_instance.track_nested_value("addresses/0/city", lambda lib, path, o, n: calls2.append((path, o, n)))
+        user_instance.set_nested_value("addresses/0/city", "Stuttgart")
+
+        assert calls1 == [("addresses/0/city", "Berlin", "Stuttgart")]
+        assert calls2 == [("addresses/0/city", "Berlin", "Stuttgart")]
+
+    def test_track_nested_value_invalid_path_raises(self, user_instance):
+        with pytest.raises(ValueError) as excinfo:
+            user_instance.track_nested_value("unknown_field", lambda model, path, o, n: None)
+        assert "is invalid" in str(excinfo.value)
+
+        with pytest.raises(ValueError) as excinfo:
+            user_instance.track_nested_value("unknown_field/0/city", lambda model, path, o, n: None)
+        assert "is invalid" in str(excinfo.value)
+
+    def test_track_nested_value_list_and_dict_path(self):
+        class Book(PydanticBaseModel):
+            title: str
+
+        class Library(PydanticBaseModel):
+            books: list[Book]
+            meta: dict[str, str] = {}
+
+        lib = Library(books=[Book(title="A")], meta={"location": "center"})
+        assert lib.meta["location"] == "center"
+        calls = []
+
+        # For list, only root attribute structure is checked, not indices
+        lib.track_nested_value("books/0/title", lambda lib, path, o, n: calls.append((path, o, n)))
+        lib.set_nested_value("books/0/title", "B")
+        assert lib.books[0].title == "B"
+        assert calls == [("books/0/title", "A", "B")]
+
+        # For dict, only root attribute structure is checked
+        meta_calls = []
+        lib.track_nested_value("meta/location", lambda lib, path, o, n: meta_calls.append((path, o, n)))
+        assert lib.meta["location"] == "center"
+        lib.set_nested_value("meta/location", "north")
+        assert lib.meta["location"] == "north"
+        assert meta_calls == [("meta/location", "center", "north")]
+
 
 class TestPydanticBaseModel:
     def test_valid_pendulum_datetime(self):