src/delta_barth/analysis/forecast.py aktualisiert

.gitignore

@@ -3,6 +3,7 @@ prototypes/
 data/
 reports/
 *.code-workspace
+docs/
 
 # credentials
 CREDENTIALS*

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "delta-barth"
-version = "0.5.0"
+version = "0.5.7dev1"
 description = "workflows and pipelines for the Python-based Plugin of Delta Barth's ERP system"
 authors = [
     {name = "Florian Förster", email = "f.foerster@d-opt.com"},
@@ -73,7 +73,7 @@ directory = "reports/coverage"
 
 
 [tool.bumpversion]
-current_version = "0.5.0"
+current_version = "0.5.7dev1"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.

scripts/bump_patch.ps1

@@ -0,0 +1,2 @@
+pdm run bump-my-version bump patch
+pdm run bump-my-version show current_version

src/delta_barth/_csharp/json_types.py

@@ -42,7 +42,11 @@ def delta_barth_api_error() -> str:
 
 
 def status_err() -> str:
-    status = Status(code=102, description="internal error occurred", message="caused by test")
+    status = Status(
+        code=102,
+        description="internal error occurred: 'Limit-Überschreitung'",
+        message="caused by test",
+    )
     return status.model_dump_json()
 
 

src/delta_barth/analysis/forecast.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import copy
 import datetime
 import math
 from collections.abc import Mapping, Set
@@ -7,10 +8,15 @@ from dataclasses import asdict
 from datetime import datetime as Datetime
 from typing import TYPE_CHECKING, Final, TypeAlias, cast
 
+import dopt_basics.datetime
 import numpy as np
 import pandas as pd
 import scipy.stats
 import sqlalchemy as sql
+
+# --- new: for calculating timedelta
+from dateutil.relativedelta import relativedelta
+from dopt_basics.datetime import TimeUnitsTimedelta
 from sklearn.metrics import mean_absolute_error, r2_score
 from sklearn.model_selection import KFold, RandomizedSearchCV
 from xgboost import XGBRegressor
@@ -26,6 +32,7 @@ from delta_barth.api.requests import (
 )
 from delta_barth.constants import (
     COL_MAP_SALES_PROGNOSIS,
+    DEFAULT_DB_ERR_CODE,
     DUMMY_DATA_PATH,
     FEATURES_SALES_PROGNOSIS,
     SALES_BASE_NUM_DATAPOINTS_MONTHS,
@@ -110,7 +117,7 @@ def _parse_df_to_results_wrapped(
     return _parse_df_to_results(data)
 
 
-@wrap_result()
+@wrap_result(code_on_error=DEFAULT_DB_ERR_CODE)
 def _write_sales_forecast_stats_wrapped(
     stats: SalesForecastStatistics,
 ) -> None:
@@ -182,16 +189,14 @@ def _process_sales(
     PipeResult
         _description_
     """
-    # cust_data: CustomerDataSalesForecast = CustomerDataSalesForecast()
-
     # filter data
     data = pipe.data
     assert data is not None, "processing not existing pipe result"
 
     DATE_FEAT: Final[str] = "buchungs_datum"
     SALES_FEAT: Final[str] = "betrag"
-    df_firma = data[(data["betrag"] > 0)]
+    df_filter = data[(data["betrag"] > 0)]
-    df_cust = df_firma.copy()
+    df_cust = df_filter.copy()
     df_cust = df_cust.sort_values(by=DATE_FEAT).reset_index()
     len_ds = len(df_cust)
 
@@ -205,7 +210,18 @@ def _process_sales(
     df_cust["jahr"] = df_cust[DATE_FEAT].dt.year
     df_cust["monat"] = df_cust[DATE_FEAT].dt.month
 
-    monthly_sum = df_cust.groupby(["jahr", "monat"])[SALES_FEAT].sum().reset_index()
+    current_year = datetime.now().year
+    current_month = datetime.now().month
+    years = range(df_cust["jahr"].min(), current_year + 1)
+
+    old_monthly_sum = df_cust.groupby(["jahr", "monat"])[SALES_FEAT].sum().reset_index()
+
+    all_month_year_combinations = pd.DataFrame(
+        [(year, month) for year in years for month in range(1, 13) if (year < current_year or (year == current_year and month <= current_month))], columns=["jahr", "monat"]
+    )
+
+    monthly_sum = pd.merge(all_month_year_combinations, old_monthly_sum, on=["jahr", "monat"], how="left")
+    monthly_sum[SALES_FEAT] = monthly_sum[SALES_FEAT].fillna(0)
     monthly_sum[DATE_FEAT] = (
         monthly_sum["monat"].astype(str) + "." + monthly_sum["jahr"].astype(str)
     )
@@ -214,13 +230,17 @@ def _process_sales(
 
     features = ["jahr", "monat"]
     target = SALES_FEAT
-    current_year = datetime.datetime.now().year
+
-    first_year = cast(int, df_cust["jahr"].min())
+    last_date = pd.to_datetime(datetime.datetime.now().strftime("%m.%Y"), format="%m.%Y")
+    future_dates = pd.date_range(
+        start=last_date + pd.DateOffset(months=1), periods=6, freq="MS"
+    )
+    forecast = pd.DataFrame({"datum": future_dates}).set_index("datum")
 
     # Randomized Search
     kfold = KFold(n_splits=5, shuffle=True)
     params: ParamSearchXGBRegressor = {
-        "n_estimators": scipy.stats.poisson(mu=1000),
+        "n_estimators": scipy.stats.poisson(mu=100),
         "learning_rate": [0.03, 0.04, 0.05],
         "max_depth": range(2, 9),
         "min_child_weight": range(1, 5),
@@ -230,26 +250,68 @@ def _process_sales(
         "early_stopping_rounds": [20, 50],
     }
 
+    best_estimator = None
     best_params: BestParametersXGBRegressor | None = None
     best_score_mae: float | None = float("inf")
     best_score_r2: float | None = None
     best_start_year: int | None = None
     too_few_month_points: bool = True
-    forecast: pd.DataFrame | None = None
+    
+    stride = dopt_basics.datetime.timedelta_from_val(365, TimeUnitsTimedelta.DAYS)
+    dates = cast(pd.DatetimeIndex, monthly_sum.index)
+    min_date = dates.min()
+
+    # baseline: 3 years - 36 months
+    starting_date = datetime.datetime.now() - relativedelta(months=36)
+
+    def get_index_date(
+        dates: pd.DatetimeIndex,
+        starting_date: datetime.datetime | pd.Timestamp,
+    ) -> tuple[pd.Timestamp, bool]:
+        target, succ = next(
+            ((date, True) for date in dates if date >= starting_date), (dates[-1], False)
+        )
+        return target, succ
+
+    first_date, succ = get_index_date(dates, starting_date)
+    if not succ:
+        # !! return early
+        ...
+
+    date_span = first_date - min_date
+    steps = date_span.days // stride.days
+
+    for step in range(steps + 1):
+        print("step: ", step)
+        target_date = first_date - step * stride
+        print("target date: ", target_date)
+        split_date = dates[-6]
+
+        index_date, succ = get_index_date(dates, target_date)
+
+        if not succ:
+            break
+
+        if index_date >= split_date:
+            print("Skip because of date difference")
+            continue
 
-    for start_year in range(current_year - 4, first_year - 1, -1):
         train = cast(
             pd.DataFrame,
-            monthly_sum[monthly_sum.index.year >= start_year].iloc[:-5].copy(),  # type: ignore
+            monthly_sum.loc[index_date:split_date].copy(),  # type: ignore
         )
+        print(train)
+        print("Length train: ", len(train))
         test = cast(
             pd.DataFrame,
-            monthly_sum[monthly_sum.index.year >= start_year].iloc[-5:].copy(),  # type: ignore
+            monthly_sum.loc[split_date:].copy(),  # type: ignore
         )
         X_train, X_test = train[features], test[features]
         y_train, y_test = train[target], test[target]
 
-        if len(train) >= (base_num_data_points_months + 10 * (current_year - 4 - start_year)):
+        # test set size fixed at 6 --> first iteration: baseline - 6 entries
+        # for each new year 10 new data points (i.e., sales strictly positive) needed
+        if len(train[train[SALES_FEAT] > 0]) >= 30 + 10 * step:
             too_few_month_points = False
 
             rand = RandomizedSearchCV(
@@ -272,13 +334,22 @@ def _process_sales(
                     best_params = cast(BestParametersXGBRegressor, rand.best_params_)
                     best_score_mae = error
                     best_score_r2 = cast(float, r2_score(y_test, y_pred))
-                    best_start_year = start_year
+                    # --- new: use target_date for best_start_year
-                    print("executed")
+                    best_start_year = target_date.year
-                    forecast = test.copy()
+                    # --- new: store best_estimator
-                    forecast.loc[:, "vorhersage"] = y_pred
+                    best_estimator = copy.copy(rand.best_estimator_)
+
+    # ?? --- new: use best_estimator to calculate future values and store them in forecast
+    if best_estimator is not None:
+        X_future = pd.DataFrame(
+            {"jahr": future_dates.year, "monat": future_dates.month}, index=future_dates
+        )
+        y_future = best_estimator.predict(X_future)  # type: ignore
+        forecast["vorhersage"] = y_future
+        forecast["jahr"] = forecast.index.year  # type: ignore
+        forecast["monat"] = forecast.index.month  # type: ignore
+        forecast = forecast.reset_index(drop=True)
 
-    if forecast is not None:
-        forecast = forecast.drop(SALES_FEAT, axis=1).reset_index(drop=True)
     best_score_mae = best_score_mae if not math.isinf(best_score_mae) else None
 
     if too_few_month_points:
@@ -294,7 +365,9 @@ def _process_sales(
         pipe.stats(stats)
         return pipe
 
-    assert forecast is not None, "forecast is None, but was attempted to be returned"
+    assert "vorhersage" in forecast.columns, (
+        "forecast does not contain prognosis values, but was attempted to be returned"
+    )
     status = STATUS_HANDLER.SUCCESS
     pipe.success(forecast, status)
     stats = SalesForecastStatistics(
@@ -353,6 +426,7 @@ def pipeline_sales_forecast(
     company_id: int | None = None,
     start_date: Datetime | None = None,
 ) -> SalesPrognosisResultsExport:
+    logger_pipelines.info("[PIPELINES] Starting main sales forecast pipeline...")
     response, status = get_sales_prognosis_data(
         session,
         company_id=company_id,
@@ -413,6 +487,8 @@ def pipeline_sales_forecast(
 
     assert pipe.results is not None, "needed export response not set in pipeline"
 
+    logger_pipelines.info("[PIPELINES] Main sales forecast pipeline successful")
+
     return pipe.results
 
 
@@ -422,6 +498,9 @@ def pipeline_sales_dummy(
     start_date: Datetime | None = None,
 ) -> SalesPrognosisResultsExport:
     """prototype dummy function for tests by DelBar"""
+
+    logger_pipelines.info("[PIPELINES] Starting dummy sales forecast pipeline...")
+
     _, _, _ = session, company_id, start_date
 
     data_pth = DUMMY_DATA_PATH / "exmp_sales_prognosis_output.pkl"
@@ -434,6 +513,8 @@ def pipeline_sales_dummy(
         pipe.fail(res.status)
         return _export_on_fail(res.status)
 
+    logger_pipelines.info("[PIPELINES] Dummy sales forecast pipeline successful")
+
     return SalesPrognosisResultsExport(
         response=res.unwrap(),
         status=res.status,

src/delta_barth/api/requests.py

@@ -7,6 +7,7 @@ import requests
 from dopt_basics.io import combine_route
 from pydantic import BaseModel, PositiveInt, SkipValidation
 
+from delta_barth.constants import API_CON_TIMEOUT
 from delta_barth.errors import STATUS_HANDLER
 from delta_barth.types import DelBarApiError, ExportResponse, ResponseType, Status
 
@@ -55,7 +56,7 @@ def get_sales_prognosis_data(
     company_id: int | None = None,
     start_date: Datetime | None = None,
 ) -> tuple[SalesPrognosisResponse, Status]:
-    resp, status = session.assert_login()
+    _, status = session.assert_login()
     if status != STATUS_HANDLER.SUCCESS:
         response = SalesPrognosisResponse(daten=tuple())
         return response, status
@@ -67,11 +68,18 @@ def get_sales_prognosis_data(
         FirmaId=company_id,
         BuchungsDatum=start_date,
     )
-    resp = requests.get(
+    empty_response = SalesPrognosisResponse(daten=tuple())
-        URL,
+    try:
-        params=sales_prog_req.model_dump(mode="json", exclude_none=True),
+        resp = requests.get(
-        headers=session.headers,  # type: ignore[argumentType]
+            URL,
-    )
+            params=sales_prog_req.model_dump(mode="json", exclude_none=True),
+            headers=session.headers,  # type: ignore[argumentType]
+            timeout=API_CON_TIMEOUT,
+        )
+    except requests.exceptions.Timeout:
+        return empty_response, STATUS_HANDLER.pipe_states.CONNECTION_TIMEOUT
+    except requests.exceptions.RequestException:
+        return empty_response, STATUS_HANDLER.pipe_states.CONNECTION_ERROR
 
     response: SalesPrognosisResponse
     status: Status
@@ -79,7 +87,7 @@ def get_sales_prognosis_data(
         response = SalesPrognosisResponse(**resp.json())
         status = STATUS_HANDLER.SUCCESS
     else:
-        response = SalesPrognosisResponse(daten=tuple())
+        response = empty_response
         err = DelBarApiError(status_code=resp.status_code, **resp.json())
         status = STATUS_HANDLER.api_error(err)
 

src/delta_barth/constants.py

@@ -15,9 +15,9 @@ assert dummy_data_pth.exists(), f"dummy data path not found: {dummy_data_pth}"
 DUMMY_DATA_PATH: Final[Path] = dummy_data_pth
 
 # ** logging
-ENABLE_LOGGING: Final[bool] = False
+ENABLE_LOGGING: Final[bool] = True
 LOGGING_TO_FILE: Final[bool] = True
-LOGGING_TO_STDERR: Final[bool] = True
+LOGGING_TO_STDERR: Final[bool] = False
 LOG_FILENAME: Final[str] = "dopt-delbar.log"
 
 # ** databases
@@ -25,6 +25,7 @@ DB_ECHO: Final[bool] = True
 
 # ** error handling
 DEFAULT_INTERNAL_ERR_CODE: Final[int] = 100
+DEFAULT_DB_ERR_CODE: Final[int] = 150
 DEFAULT_API_ERR_CODE: Final[int] = 400
 
 
@@ -38,6 +39,8 @@ class KnownDelBarApiErrorCodes(enum.Enum):
     COMMON = frozenset((400, 401, 409, 500))
 
 
+# ** API
+API_CON_TIMEOUT: Final[float] = 10.0  # secs to response
 # ** API response parsing
 # ** column mapping [API-Response --> Target-Features]
 COL_MAP_SALES_PROGNOSIS: Final[DualDict[str, str]] = DualDict(

src/delta_barth/databases.py

@@ -22,8 +22,8 @@ perf_meas = sql.Table(
     "performance_measurement",
     metadata,
     sql.Column("id", sql.Integer, primary_key=True),
-    sql.Column("execution_duration", sql.Float),
     sql.Column("pipeline_name", sql.String(length=30)),
+    sql.Column("execution_duration", sql.Float),
 )
 # ** ---- forecasts
 sf_stats = sql.Table(

src/delta_barth/errors.py

@@ -6,7 +6,7 @@ from functools import wraps
 from typing import Any, Final
 
 from delta_barth.constants import DEFAULT_API_ERR_CODE, DEFAULT_INTERNAL_ERR_CODE
-from delta_barth.logging import logger_wrapped_results as logger
+from delta_barth.logging import logger_status, logger_wrapped_results
 from delta_barth.types import DataPipeStates, Status
 
 if t.TYPE_CHECKING:
@@ -53,9 +53,19 @@ class UApiError(Exception):
 ## ** internal error handling
 DATA_PIPELINE_STATUS_DESCR: Final[tuple[StatusDescription, ...]] = (
     ("SUCCESS", 0, "Erfolg"),
-    ("TOO_FEW_POINTS", 1, "Datensatz besitzt nicht genügend Datenpunkte"),
+    (
-    ("TOO_FEW_MONTH_POINTS", 2, "nach Aggregation pro Monat nicht genügend Datenpunkte"),
+        "CONNECTION_TIMEOUT",
-    ("NO_RELIABLE_FORECAST", 3, "Prognosequalität des Modells unzureichend"),
+        1,
+        "Der Verbindungsaufbau zum API-Server dauerte zu lange. Ist der Server erreichbar?",
+    ),
+    (
+        "CONNECTION_ERROR",
+        2,
+        "Es ist keine Verbindung zum API-Server möglich. Ist der Server erreichbar?",
+    ),
+    ("TOO_FEW_POINTS", 3, "Datensatz besitzt nicht genügend Datenpunkte"),
+    ("TOO_FEW_MONTH_POINTS", 4, "nach Aggregation pro Monat nicht genügend Datenpunkte"),
+    ("NO_RELIABLE_FORECAST", 5, "Prognosequalität des Modells unzureichend"),
 )
 
 
@@ -151,23 +161,32 @@ class StatusHandler:
         state: Status,
     ) -> None:
         if state == self.SUCCESS:
+            logger_status.info(
+                "[STATUS] Raise for status - SUCCESS. all good.", stack_info=True
+            )
             return
 
         code = state.code
         descr = state.description
         msg = state.message
 
+        exc: Exception
         if code < DEFAULT_INTERNAL_ERR_CODE:
-            raise _construct_exception(UDataProcessingError, descr, msg)
+            exc = _construct_exception(UDataProcessingError, descr, msg)
         elif DEFAULT_INTERNAL_ERR_CODE <= code < DEFAULT_API_ERR_CODE:
-            raise _construct_exception(UInternalError, descr, msg)
+            exc = _construct_exception(UInternalError, descr, msg)
         else:
             api_err = state.api_server_error
             assert api_err is not None, (
                 "error code inidcated API error, but no error instance found"
             )
             add_info = api_err.model_dump(exclude_none=True)
-            raise _construct_exception(UApiError, descr, msg, add_info)
+            exc = _construct_exception(UApiError, descr, msg, add_info)
+
+        logger_status.error(
+            "[STATUS] Raise for status - Error occurred: %s", exc, stack_info=True
+        )
+        raise exc
 
 
 STATUS_HANDLER: Final[StatusHandler] = StatusHandler()
@@ -229,24 +248,24 @@ def wrap_result(
     def wrap_result(func: Callable[P, T]) -> Callable[P, ResultWrapper[T]]:
         @wraps(func)
         def wrapper(*args: P.args, **kwargs: P.kwargs) -> ResultWrapper[T]:
-            status: ResultWrapper[T]
+            wrapped_result: ResultWrapper[T]
             try:
                 res = func(*args, **kwargs)
-                status = ResultWrapper(
+                wrapped_result = ResultWrapper(
                     result=res, exception=None, code_on_error=code_on_error
                 )
             except Exception as err:
-                status = ResultWrapper(
+                wrapped_result = ResultWrapper(
                     result=NotSet(), exception=err, code_on_error=code_on_error
                 )
-                logger.error(
+                logger_wrapped_results.info(
-                    "An exception in routine %s occurred - msg: %s, stack trace:",
+                    "[RESULT-WRAPPER] An exception in routine %s occurred - msg: %s, stack trace:",
                     func.__name__,
                     str(err),
                     stack_info=True,
                 )
 
-            return status
+            return wrapped_result
 
         return wrapper
 

src/delta_barth/logging.py

@@ -17,21 +17,22 @@ from delta_barth.constants import (
 logging.Formatter.converter = gmtime
 LOG_FMT: Final[str] = "%(asctime)s | lang_main:%(module)s:%(levelname)s | %(message)s"
 LOG_DATE_FMT: Final[str] = "%Y-%m-%d %H:%M:%S +0000"
-# LOG_FILE_FOLDER: Final[Path] = LIB_PATH / "logs" # !! configured in SESSION
-# if not LOG_FILE_FOLDER.exists():
-#     LOG_FILE_FOLDER.mkdir(parents=True)
-
-
 LOGGING_LEVEL_STDERR: Final[int] = logging.INFO
 LOGGING_LEVEL_FILE: Final[int] = logging.DEBUG
-
+# ** handlers
+NULL_HANDLER = logging.NullHandler()
+# ** formatters
+LOGGER_ALL_FORMATER = logging.Formatter(fmt=LOG_FMT, datefmt=LOG_DATE_FMT)
 
 # ** loggers and configuration
-logger_all = logging.getLogger("delta_barth")
+
-# logger_all.addHandler(logger_all_handler_stderr)
+logger_base = logging.getLogger("delta_barth")
-# logger_all.addHandler(logger_all_handler_file)
+logger_status = logging.getLogger("delta_barth.status")
+logger_status.setLevel(logging.DEBUG)
 logger_session = logging.getLogger("delta_barth.session")
 logger_session.setLevel(logging.DEBUG)
+logger_management = logging.getLogger("delta_barth.management")
+logger_management.setLevel(logging.DEBUG)
 logger_wrapped_results = logging.getLogger("delta_barth.wrapped_results")
 logger_wrapped_results.setLevel(logging.DEBUG)
 logger_pipelines = logging.getLogger("delta_barth.pipelines")
@@ -43,18 +44,15 @@ logger_db.setLevel(logging.DEBUG)
 def setup_logging(
     logging_dir: Path,
 ) -> None:
-    # ** formatters
-    logger_all_formater = logging.Formatter(fmt=LOG_FMT, datefmt=LOG_DATE_FMT)
-
     # ** handlers
     LOG_FILE_PATH: Final[Path] = logging_dir / LOG_FILENAME
-    null_handler = logging.NullHandler()
+
     if ENABLE_LOGGING and LOGGING_TO_STDERR:
         logger_all_handler_stderr = logging.StreamHandler()
         logger_all_handler_stderr.setLevel(LOGGING_LEVEL_STDERR)
-        logger_all_handler_stderr.setFormatter(logger_all_formater)
+        logger_all_handler_stderr.setFormatter(LOGGER_ALL_FORMATER)
     else:  # pragma: no cover
-        logger_all_handler_stderr = null_handler
+        logger_all_handler_stderr = NULL_HANDLER
 
     if ENABLE_LOGGING and LOGGING_TO_FILE:
         logger_all_handler_file = logging.handlers.RotatingFileHandler(
@@ -65,9 +63,17 @@ def setup_logging(
             delay=True,
         )
         logger_all_handler_file.setLevel(LOGGING_LEVEL_FILE)
-        logger_all_handler_file.setFormatter(logger_all_formater)
+        logger_all_handler_file.setFormatter(LOGGER_ALL_FORMATER)
     else:  # pragma: no cover
-        logger_all_handler_file = null_handler
+        logger_all_handler_file = NULL_HANDLER
 
-    logger_all.addHandler(logger_all_handler_stderr)
+    logger_base.addHandler(logger_all_handler_stderr)
-    logger_all.addHandler(logger_all_handler_file)
+    logger_base.addHandler(logger_all_handler_file)
+
+
+def disable_logging() -> None:
+    handlers = tuple(logger_base.handlers)
+    for handler in handlers:
+        logger_base.removeHandler(handler)
+
+    logger_base.addHandler(NULL_HANDLER)

src/delta_barth/management.py

@@ -6,6 +6,7 @@ from __future__ import annotations
 from typing import Final
 
 from delta_barth.constants import HTTP_BASE_CONTENT_HEADERS
+from delta_barth.logging import logger_session as logger
 from delta_barth.session import Session
 
 SESSION: Final[Session] = Session(HTTP_BASE_CONTENT_HEADERS)
@@ -13,9 +14,13 @@ SESSION: Final[Session] = Session(HTTP_BASE_CONTENT_HEADERS)
 
 def setup(
     data_path: str,
+    base_url: str,
 ) -> None:  # pragma: no cover
+    # at this point: no logging configured
     SESSION.set_data_path(data_path)
+    SESSION.set_base_url(base_url=base_url)
     SESSION.setup()
+    logger.info("[EXT-CALL MANAGEMENT] Successfully set up current session")
 
 
 def set_credentials(
@@ -24,25 +29,33 @@ def set_credentials(
     database: str,
     mandant: str,
 ) -> None:  # pragma: no cover
+    logger.info("[EXT-CALL MANAGEMENT] Setting credentials for current session...")
     SESSION.set_credentials(
         username=username,
         password=password,
         database=database,
         mandant=mandant,
     )
+    logger.info("[EXT-CALL MANAGEMENT] Successfully set credentials for current session")
 
 
+# ** not part of external API, only internal
 def get_credentials() -> str:  # pragma: no cover
+    logger.info("[EXT-CALL MANAGEMENT] Getting credentials for current session...")
     creds = SESSION.creds
+    logger.info("[EXT-CALL MANAGEMENT] Successfully got credentials for current session")
     return creds.model_dump_json()
 
 
-# ** legacy: not part of external API
 def set_base_url(
     base_url: str,
 ) -> None:  # pragma: no cover
     SESSION.set_base_url(base_url=base_url)
 
 
+def get_data_path() -> str:  # pragma: no cover
+    return str(SESSION.data_path)
+
+
 def get_base_url() -> str:  # pragma: no cover
     return SESSION.base_url

src/delta_barth/pipelines.py

@@ -1,20 +1,83 @@
 """collection of configured data pipelines, intended to be invoked from C#"""
 
+import time
 from datetime import datetime as Datetime
+from typing import Final
 
+import sqlalchemy as sql
+
+from delta_barth import databases as db
 from delta_barth.analysis import forecast
+from delta_barth.constants import DEFAULT_DB_ERR_CODE
+from delta_barth.errors import STATUS_HANDLER, wrap_result
+from delta_barth.logging import logger_pipelines as logger
 from delta_barth.management import SESSION
-from delta_barth.types import JsonExportResponse
+from delta_barth.types import JsonExportResponse, PipelineMetrics
+
+
+def _write_performance_metrics(
+    pipeline_name: str,
+    time_start: int,
+    time_end: int,
+) -> PipelineMetrics:
+    if time_end < time_start:
+        raise ValueError("Ending time smaller than starting time")
+    execution_duration = (time_end - time_start) / 1e9
+    metrics = PipelineMetrics(
+        pipeline_name=pipeline_name,
+        execution_duration=execution_duration,
+    )
+
+    with SESSION.db_engine.begin() as con:
+        con.execute(sql.insert(db.perf_meas).values(**metrics))
+
+    return metrics
+
+
+@wrap_result(code_on_error=DEFAULT_DB_ERR_CODE)
+def _write_performance_metrics_wrapped(
+    pipeline_name: str,
+    time_start: int,
+    time_end: int,
+) -> PipelineMetrics:
+    return _write_performance_metrics(pipeline_name, time_start, time_end)
 
 
 def pipeline_sales_forecast(
     company_id: int | None,
     start_date: Datetime | None,
 ) -> JsonExportResponse:
+    PIPELINE_NAME: Final[str] = "sales_forecast"
+    logger.info("[EXT-CALL PIPELINES] Starting main sales forecast pipeline...")
+    t_start = time.perf_counter_ns()
     result = forecast.pipeline_sales_forecast(
         SESSION, company_id=company_id, start_date=start_date
     )
     export = JsonExportResponse(result.model_dump_json())
+    t_end = time.perf_counter_ns()
+    logger.info("[EXT-CALL PIPELINES] Main sales forecast pipeline successful")
+    logger.info("[EXT-CALL PIPELINES] Writing performance metrics...")
+    res = _write_performance_metrics_wrapped(
+        pipeline_name=PIPELINE_NAME,
+        time_start=t_start,
+        time_end=t_end,
+    )
+    if res.status != STATUS_HANDLER.SUCCESS:
+        logger.error(
+            (
+                "[DB-WRITE][METRICS] Pipeline: >%s< - Error on writing "
+                "pipeline metrics to database: %s"
+            ),
+            PIPELINE_NAME,
+            res.status,
+        )
+    else:
+        metrics = res.unwrap()
+        logger.info(
+            "[METRICS] Pipeline: >%s< - Execution time: %.6f",
+            PIPELINE_NAME,
+            metrics["execution_duration"],
+        )
 
     return export
 
@@ -23,11 +86,38 @@ def pipeline_sales_forecast_dummy(
     company_id: int | None,
     start_date: Datetime | None,
 ) -> JsonExportResponse:
+    PIPELINE_NAME: Final[str] = "sales_forecast_dummy"
+    logger.info("[EXT-CALL PIPELINES] Starting dummy sales forecast pipeline...")
+    t_start = time.perf_counter_ns()
     result = forecast.pipeline_sales_dummy(
         SESSION,
         company_id=company_id,
         start_date=start_date,
     )
     export = JsonExportResponse(result.model_dump_json())
+    t_end = time.perf_counter_ns()
+    logger.info("[EXT-CALL PIPELINES] Dummy sales forecast pipeline successful")
+    logger.info("[EXT-CALL PIPELINES] Writing performance metrics...")
+    res = _write_performance_metrics_wrapped(
+        pipeline_name=PIPELINE_NAME,
+        time_start=t_start,
+        time_end=t_end,
+    )
+    if res.status != STATUS_HANDLER.SUCCESS:
+        logger.error(
+            (
+                "[DB-WRITE][METRICS] Pipeline: >%s< - Error on writing "
+                "pipeline metrics to database: %s"
+            ),
+            PIPELINE_NAME,
+            res.status,
+        )
+    else:
+        metrics = res.unwrap()
+        logger.info(
+            "[METRICS] Pipeline: >%s< - Execution time: %.6f",
+            PIPELINE_NAME,
+            metrics["execution_duration"],
+        )
 
     return export

src/delta_barth/session.py

@@ -14,7 +14,7 @@ from delta_barth.api.common import (
     LoginResponse,
     validate_credentials,
 )
-from delta_barth.constants import DB_ECHO
+from delta_barth.constants import API_CON_TIMEOUT, DB_ECHO
 from delta_barth.errors import STATUS_HANDLER
 from delta_barth.logging import logger_session as logger
 from delta_barth.types import DelBarApiError, Status
@@ -42,6 +42,7 @@ class Session:
         db_folder: str = "data",
         logging_folder: str = "logs",
     ) -> None:
+        self._setup: bool = False
         self._data_path: Path | None = None
         self._db_path: Path | None = None
         self._db_folder = db_folder
@@ -55,8 +56,12 @@ class Session:
         self._logged_in: bool = False
 
     def setup(self) -> None:
-        self._setup_db_management()
+        # at this point: no logging configured
+        assert not self._setup, "tried to setup session twice"
         self._setup_logging()
+        self._setup_db_management()
+        self._setup = True
+        logger.info("[SESSION] Setup procedure successful")
 
     @property
     def data_path(self) -> Path:
@@ -70,7 +75,7 @@ class Session:
 
     @property
     def db_path(self) -> Path:
-        if self._db_path is not None:
+        if self._db_path is not None and self._setup:
             return self._db_path
 
         db_root = (self.data_path / self._db_folder).resolve()
@@ -80,9 +85,14 @@ class Session:
         self._db_path = db_path
         return self._db_path
 
+    def _setup_db_management(self) -> None:
+        self._db_engine = db.get_engine(self.db_path, echo=DB_ECHO)
+        db.metadata.create_all(self._db_engine)
+        logger.info("[SESSION] Successfully setup DB management")
+
     @property
     def logging_dir(self) -> Path:
-        if self._logging_dir is not None:
+        if self._logging_dir is not None and self._setup:
             return self._logging_dir
 
         logging_dir = self.data_path / self._logging_folder
@@ -91,15 +101,13 @@ class Session:
         self._logging_dir = logging_dir
         return self._logging_dir
 
-    def _setup_db_management(self) -> None:
-        self._db_engine = db.get_engine(self.db_path, echo=DB_ECHO)
-        db.metadata.create_all(self._db_engine)
-        logger.info("[SESSION] Successfully setup DB management")
-
     def _setup_logging(self) -> None:
         delta_barth.logging.setup_logging(self.logging_dir)
         logger.info("[SESSION] Successfully setup logging")
 
+    def disable_logging(self) -> None:
+        delta_barth.logging.disable_logging()
+
     @property
     def creds(self) -> ApiCredentials:
         assert self._creds is not None, "accessed credentials not set"
@@ -110,6 +118,7 @@ class Session:
         path: str,
     ):
         self._data_path = validate_path(path)
+        self._setup = False
 
     def set_credentials(
         self,
@@ -182,11 +191,18 @@ class Session:
             databaseName=self.creds.database,
             mandantName=self.creds.mandant,
         )
-        resp = requests.put(
+        empty_response = LoginResponse(token="")
-            URL,
+        try:
-            login_req.model_dump_json(),
+            resp = requests.put(
-            headers=self.headers,  # type: ignore
+                URL,
-        )
+                login_req.model_dump_json(),
+                headers=self.headers,  # type: ignore
+                timeout=API_CON_TIMEOUT,
+            )
+        except requests.exceptions.Timeout:  # pragma: no cover
+            return empty_response, STATUS_HANDLER.pipe_states.CONNECTION_TIMEOUT
+        except requests.exceptions.RequestException:  # pragma: no cover
+            return empty_response, STATUS_HANDLER.pipe_states.CONNECTION_ERROR
 
         response: LoginResponse
         status: Status
@@ -195,7 +211,7 @@ class Session:
             status = STATUS_HANDLER.pipe_states.SUCCESS
             self._add_session_token(response.token)
         else:
-            response = LoginResponse(token="")
+            response = empty_response
             err = DelBarApiError(status_code=resp.status_code, **resp.json())
             status = STATUS_HANDLER.api_error(err)
 
@@ -207,12 +223,17 @@ class Session:
         ROUTE: Final[str] = "user/logout"
         URL: Final = combine_route(self.base_url, ROUTE)
 
-        resp = requests.put(
+        try:
-            URL,
+            resp = requests.put(
-            headers=self.headers,  # type: ignore
+                URL,
-        )
+                headers=self.headers,  # type: ignore
+                timeout=API_CON_TIMEOUT,
+            )
+        except requests.exceptions.Timeout:  # pragma: no cover
+            return None, STATUS_HANDLER.pipe_states.CONNECTION_TIMEOUT
+        except requests.exceptions.RequestException:  # pragma: no cover
+            return None, STATUS_HANDLER.pipe_states.CONNECTION_ERROR
 
-        response = None
         status: Status
         if resp.status_code == 200:
             status = STATUS_HANDLER.SUCCESS
@@ -221,7 +242,7 @@ class Session:
             err = DelBarApiError(status_code=resp.status_code, **resp.json())
             status = STATUS_HANDLER.api_error(err)
 
-        return response, status
+        return None, status
 
     def assert_login(
         self,
@@ -237,11 +258,18 @@ class Session:
         ROUTE: Final[str] = "verkauf/umsatzprognosedaten"
         URL: Final = combine_route(self.base_url, ROUTE)
         params: dict[str, int] = {"FirmaId": 999999}
-        resp = requests.get(
+        empty_response = LoginResponse(token="")
-            URL,
+        try:
-            params=params,
+            resp = requests.get(
-            headers=self.headers,  # type: ignore
+                URL,
-        )
+                params=params,
+                headers=self.headers,  # type: ignore
+                timeout=API_CON_TIMEOUT,
+            )
+        except requests.exceptions.Timeout:  # pragma: no cover
+            return empty_response, STATUS_HANDLER.pipe_states.CONNECTION_TIMEOUT
+        except requests.exceptions.RequestException:  # pragma: no cover
+            return empty_response, STATUS_HANDLER.pipe_states.CONNECTION_ERROR
 
         response: LoginResponse
         status: Status
@@ -252,7 +280,7 @@ class Session:
             self._remove_session_token()
             response, status = self.login()
         else:
-            response = LoginResponse(token="")
+            response = empty_response
             err = DelBarApiError(status_code=resp.status_code, **resp.json())
             status = STATUS_HANDLER.api_error(err)
 

src/delta_barth/types.py

@@ -47,6 +47,8 @@ class ExportResponse(BaseModel):
 @dataclass(slots=True)
 class DataPipeStates:
     SUCCESS: Status
+    CONNECTION_TIMEOUT: Status
+    CONNECTION_ERROR: Status
     TOO_FEW_POINTS: Status
     TOO_FEW_MONTH_POINTS: Status
     NO_RELIABLE_FORECAST: Status
@@ -139,7 +141,13 @@ class Statistics:
     pass
 
 
-# ** forecasts
+# ** ---- performance
+class PipelineMetrics(t.TypedDict):
+    pipeline_name: str
+    execution_duration: float
+
+
+# ** ---- forecasts
 @dataclass(slots=True)
 class CustomerDataSalesForecast:
     order: list[int] = field(default_factory=list)

tests/api/test_requests.py

@@ -1,8 +1,10 @@
 from datetime import datetime as Datetime
 
 import pytest
+import requests
 
 from delta_barth.api import requests as requests_
+from delta_barth.api.common import LoginResponse
 
 
 @pytest.mark.api_con_required
@@ -94,3 +96,31 @@ def test_get_sales_prognosis_data_FailApiServer(session, mock_get):
     assert status.api_server_error.message == json["message"]
     assert status.api_server_error.code == json["code"]
     assert status.api_server_error.hints == json["hints"]
+
+
+def test_get_sales_prognosis_data_FailGetTimeout(session, mock_get):
+    mock_get.side_effect = requests.exceptions.Timeout("Test timeout")
+
+    def assert_login():
+        return LoginResponse(token=""), requests_.STATUS_HANDLER.SUCCESS
+
+    session.assert_login = assert_login
+
+    resp, status = requests_.get_sales_prognosis_data(session, None, None)
+    assert resp is not None
+    assert len(resp.daten) == 0
+    assert status.code == 1
+
+
+def test_get_sales_prognosis_data_FailGetRequestException(session, mock_get):
+    mock_get.side_effect = requests.exceptions.RequestException("Test not timeout")
+
+    def assert_login():
+        return LoginResponse(token=""), requests_.STATUS_HANDLER.SUCCESS
+
+    session.assert_login = assert_login
+
+    resp, status = requests_.get_sales_prognosis_data(session, None, None)
+    assert resp is not None
+    assert len(resp.daten) == 0
+    assert status.code == 2

tests/conftest.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import json
 import tomllib
 from pathlib import Path
-from typing import Any, cast
+from typing import cast
 from unittest.mock import patch
 
 import pandas as pd
@@ -95,7 +95,7 @@ def mock_put():
         yield mock
 
 
-@pytest.fixture
+@pytest.fixture(scope="function")
 def mock_get():
     with patch("requests.get") as mock:
         yield mock

tests/test_pipelines.py

@@ -3,20 +3,44 @@ import json
 from unittest.mock import patch
 
 import pytest
+import sqlalchemy as sql
 
 import delta_barth.pipelines
+from delta_barth import databases as db
 from delta_barth import pipelines as pl
 from delta_barth.errors import STATUS_HANDLER
 
 
+def test_write_performance_metrics(session):
+    pipe_name = "test_pipe"
+    t_start = 20_000_000_000
+    t_end = 30_000_000_000
+
+    with patch("delta_barth.pipelines.SESSION", session):
+        metrics = pl._write_performance_metrics(
+            pipeline_name=pipe_name,
+            time_start=t_start,
+            time_end=t_end,
+        )
+    assert metrics["pipeline_name"] == pipe_name
+    assert metrics["execution_duration"] == 10
+
+    with session.db_engine.begin() as con:
+        ret = con.execute(sql.select(db.perf_meas))
+
+    metrics = ret.all()[-1]
+    assert metrics.pipeline_name == pipe_name
+    assert metrics.execution_duration == 10
+
+
 @patch("delta_barth.analysis.forecast.SALES_BASE_NUM_DATAPOINTS_MONTHS", 1)
-def test_sales_prognosis_pipeline(exmpl_api_sales_prognosis_resp):
+def test_sales_prognosis_pipeline(exmpl_api_sales_prognosis_resp, session):
     with patch(
         "delta_barth.analysis.forecast.get_sales_prognosis_data",
     ) as mock:
         mock.return_value = (exmpl_api_sales_prognosis_resp, STATUS_HANDLER.SUCCESS)
-        importlib.reload(delta_barth.pipelines)
+        with patch("delta_barth.pipelines.SESSION", session):
-        json_export = pl.pipeline_sales_forecast(None, None)
+            json_export = pl.pipeline_sales_forecast(None, None)
 
     assert isinstance(json_export, str)
     parsed_resp = json.loads(json_export)
@@ -27,9 +51,18 @@ def test_sales_prognosis_pipeline(exmpl_api_sales_prognosis_resp):
     assert "code" in parsed_resp["status"]
     assert parsed_resp["status"]["code"] == 0
 
+    with session.db_engine.begin() as con:
+        ret = con.execute(sql.select(db.perf_meas))
 
-def test_sales_prognosis_pipeline_dummy():
+    metrics = ret.all()[-1]
-    json_export = pl.pipeline_sales_forecast_dummy(None, None)
+    assert metrics.pipeline_name == "sales_forecast"
+    assert metrics.execution_duration > 0
+
+
+@pytest.mark.new
+def test_sales_prognosis_pipeline_dummy(session):
+    with patch("delta_barth.pipelines.SESSION", session):
+        json_export = pl.pipeline_sales_forecast_dummy(None, None)
 
     assert isinstance(json_export, str)
     parsed_resp = json.loads(json_export)
@@ -43,3 +76,10 @@ def test_sales_prognosis_pipeline_dummy():
     assert entry["vorhersage"] == pytest.approx(47261.058594)
     assert "code" in parsed_resp["status"]
     assert parsed_resp["status"]["code"] == 0
+
+    with session.db_engine.begin() as con:
+        ret = con.execute(sql.select(db.perf_meas))
+
+    metrics = ret.all()[-1]
+    assert metrics.pipeline_name == "sales_forecast_dummy"
+    assert metrics.execution_duration > 0

tests/test_session.py

@@ -4,6 +4,7 @@ from unittest.mock import patch
 import pytest
 
 import delta_barth.session
+from delta_barth import logging
 from delta_barth.constants import (
     DEFAULT_API_ERR_CODE,
     HTTP_BASE_CONTENT_HEADERS,
@@ -55,6 +56,8 @@ def test_session_setup_db_management(tmp_path):
     assert db_path.parent == target_db_dir
     assert not db_path.exists()
     session.setup()
+    db_path2 = session.db_path
+    assert db_path2 == db_path
     assert session._db_engine is not None
     assert db_path.exists()
 
@@ -66,6 +69,30 @@ def test_session_setup_logging(tmp_path):
     foldername: str = "logging_test"
     target_log_dir = tmp_path / foldername
 
+    session = delta_barth.session.Session(
+        HTTP_BASE_CONTENT_HEADERS, logging_folder=foldername
+    )
+    session.set_data_path(str_path)
+    log_dir = session.logging_dir
+
+    assert log_dir.exists()
+    assert log_dir == target_log_dir
+    # write file
+    target_file = target_log_dir / LOG_FILENAME
+    assert not target_file.exists()
+    session.setup()  # calls setup code for logging
+    log_dir2 = session.logging_dir
+    assert log_dir2 == log_dir
+    assert target_file.exists()
+
+
+@patch("delta_barth.logging.ENABLE_LOGGING", True)
+@patch("delta_barth.logging.LOGGING_TO_FILE", True)
+def test_session_disable_logging(tmp_path):
+    str_path = str(tmp_path)
+    foldername: str = "logging_test"
+    target_log_dir = tmp_path / foldername
+
     session = delta_barth.session.Session(
         HTTP_BASE_CONTENT_HEADERS, logging_folder=foldername
     )
@@ -78,6 +105,21 @@ def test_session_setup_logging(tmp_path):
     assert not target_file.exists()
     session.setup()  # calls setup code for logging
     assert target_file.exists()
+    # provoke entry
+    msg = "this is a test"
+    logging.logger_base.critical(msg)
+    session.disable_logging()
+    with open(target_file, "r") as file:
+        content = file.readlines()
+    last_line = content[-1]
+    assert msg in last_line.lower()
+    # log new entry which should not be added as logging is disabled
+    msg = "this is a second test"
+    logging.logger_base.critical(msg)
+    with open(target_file, "r") as file:
+        content = file.readlines()
+    last_line = content[-1]
+    assert msg not in last_line.lower()
 
 
 def test_session_set_ApiInfo_LoggedOut(credentials, api_base_url):