add metadata tracking

prototypes/05-1_metadata.py

@@ -0,0 +1,49 @@
+# %%
+import dataclasses as dc
+import importlib
+import time
+from pathlib import Path
+
+import polars as pl
+import sqlalchemy as sql
+from dopt_basics import datetime as dopt_dt
+
+import wattanalyse
+from wattanalyse import constants, db, pipelines
+
+importlib.reload(wattanalyse)
+importlib.reload(constants)
+importlib.reload(db)
+
+PROJECT_BASE = Path(__file__).parents[1]
+DATA_PTH = PROJECT_BASE / "data"
+assert DATA_PTH.exists()
+
+# %%
+start = dopt_dt.current_time_tz()
+t1 = time.perf_counter_ns()
+
+time.sleep(1.5)
+
+t2 = time.perf_counter_ns()
+dur_sek = (t2 - t1) / 1e9
+dur = dopt_dt.timedelta_from_val(dur_sek, dopt_dt.TimeUnitsTimedelta.SECONDS)
+
+stop = start + dur
+
+print(f"Started: {start}\nDuration: {dur} sek\nEnded: {stop}")
+# %%
+metadata = db.InternMetadataInsertEntry(
+    pipeline_name="test",
+    gestartet_um=start,
+    beendet_um=stop,
+    dauer_sek=dur_sek,
+    status_code=0,
+)
+
+# %%
+res = pipelines.write_metadata(metadata)
+
+# %%
+res.status
+# %%