Chiusura fase di ristrutturazione e modularizzazione del workflow per favorire sviluppo modulare

harness/tht/db/execute.py

@@ -5,10 +5,12 @@ from sqlalchemy import Engine
 from tht.execute import (
     ExecResult,
     PlanSummary,
-    explain as _explain,
     require_positive_int,
     run_controlled,
 )
+from tht.execute import (
+    explain as _explain,
+)
 
 DEFAULT_TIMEOUT_MS = 30_000
 

harness/tht/db/fetch_ca.py

@@ -45,9 +45,11 @@ def fetch_chain_pem(host: str, port: int = 443, timeout: int = 30) -> list[str]:
     ctx.check_hostname = False
     ctx.verify_mode = ssl.CERT_NONE
     try:
-        with socket.create_connection((host, port), timeout=timeout) as sock:
-            with ctx.wrap_socket(sock, server_hostname=host) as tls:
-                certs = _unverified_chain(tls)
+        with (
+            socket.create_connection((host, port), timeout=timeout) as sock,
+            ctx.wrap_socket(sock, server_hostname=host) as tls,
+        ):
+            certs = _unverified_chain(tls)
     except (OSError, ssl.SSLError) as e:
         raise CaFetchError(
             f"Impossibile connettersi a {host}:{port} per recuperare i certificati: {e}"

harness/tht/db/sampling.py

@@ -92,7 +92,7 @@ def add_examples(engine: Engine, physical: PhysicalSchema, cfg: ExamplesConfig)
                 ''')
                 try:
                     rows = conn.execute(q, {"lim": cfg.max_per_column}).fetchall()
-                except Exception as e:  # colonna non leggibile: si salta, non si interrompe
+                except Exception as e:  # noqa: BLE001 - skip any unreadable DWH column
                     logger.warning("Campionamento saltato per %s.%s: %s", table_name, column_name, e)
                     continue
                 column.examples = [str(r[0]) for r in rows]
@@ -164,7 +164,7 @@ def unique_values_for_lsh(
                 ''')
                 try:
                     rows = conn.execute(q, {"lim": cfg.max_values_per_column}).fetchall()
-                except Exception as e:
+                except Exception as e:  # noqa: BLE001 - skip any unreadable DWH column
                     skipped.append(SkippedColumn(table_name, column_name, f"errore: {e}"))
                     continue
                 vals = [str(r[0]) for r in rows]
@@ -205,7 +205,7 @@ def unique_values_for_lsh_rest(
                 rows = client.top_values(
                     schema, table_name, column_name, cfg.max_values_per_column
                 )
-            except Exception as e:
+            except Exception as e:  # noqa: BLE001 - skip any unreadable REST column
                 skipped.append(SkippedColumn(table_name, column_name, f"errore: {e}"))
                 continue
             vals = [str(r["value"]) for r in rows if r["value"] not in (None, "")]