fix timezone handling for timestamps from the database

[nominatim.git] / nominatim / api / status.py

diff --git a/nominatim/api/status.py b/nominatim/api/status.py
index c8ebbefa2ba96be6f470376e9f3e3d57a9520f33..8ac92f35835d0914e1d069b4cfef276ff95ac8e6 100644 (file)
--- a/nominatim/api/status.py
+++ b/nominatim/api/status.py
@@ -7,12 +7,11 @@
 """
 Classes and function releated to status call.
 """
-from typing import Optional, cast
+from typing import Optional
 import datetime as dt
 import dataclasses
 
 import sqlalchemy as sa
-import asyncpg
 
 from nominatim.api.connection import SearchConnection
 from nominatim import version
@@ -28,37 +27,26 @@ class StatusResult:
     database_version: Optional[version.NominatimVersion] = None
 
 
-async def _get_database_date(conn: SearchConnection) -> Optional[dt.datetime]:
-    """ Query the database date.
-    """
-    sql = sa.text('SELECT lastimportdate FROM import_status LIMIT 1')
-    result = await conn.execute(sql)
-
-    for row in result:
-        return cast(dt.datetime, row[0])
-
-    return None
-
-
-async def _get_database_version(conn: SearchConnection) -> Optional[version.NominatimVersion]:
-    sql = sa.text("""SELECT value FROM nominatim_properties
-                     WHERE property = 'database_version'""")
-    result = await conn.execute(sql)
-
-    for row in result:
-        return version.parse_version(cast(str, row[0]))
-
-    return None
-
-
 async def get_status(conn: SearchConnection) -> StatusResult:
     """ Execute a status API call.
     """
     status = StatusResult(0, 'OK')
+
+    # Last update date
+    sql = sa.select(conn.t.import_status.c.lastimportdate).limit(1)
+    status.data_updated = await conn.scalar(sql)
+
+    if status.data_updated is not None:
+        if status.data_updated.tzinfo is None:
+            status.data_updated = status.data_updated.replace(tzinfo=dt.timezone.utc)
+        else:
+            status.data_updated = status.data_updated.astimezone(dt.timezone.utc)
+
+    # Database version
     try:
-        status.data_updated = await _get_database_date(conn)
-        status.database_version = await _get_database_version(conn)
-    except asyncpg.PostgresError:
-        return StatusResult(700, 'Database connection failed')
+        verstr = await conn.get_property('database_version')
+        status.database_version = version.parse_version(verstr)
+    except ValueError:
+        pass
 
     return status