convert special phrase loaders to generators

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

diff --git a/nominatim/db/status.py b/nominatim/db/status.py
index 9d7344c48754e93313be543a60d3120ed02fcb61..d31196b3f9cdd14c9da1277565525e10f3688430 100644 (file)
--- a/nominatim/db/status.py
+++ b/nominatim/db/status.py
@@ -1,3 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
 """
 Access and helper functions for the status and status log table.
 """
@@ -5,9 +11,11 @@ import datetime as dt
 import logging
 import re
 
-from ..tools.exec_utils import get_url
+from nominatim.tools.exec_utils import get_url
+from nominatim.errors import UsageError
 
 LOG = logging.getLogger()
+ISODATE_FORMAT = '%Y-%m-%dT%H:%M:%S'
 
 def compute_database_date(conn):
     """ Determine the date of the database from the newest object in the
@@ -15,15 +23,18 @@ def compute_database_date(conn):
     """
     # First, find the node with the highest ID in the database
     with conn.cursor() as cur:
-        osmid = cur.scalar("SELECT max(osm_id) FROM place WHERE osm_type='N'")
+        if conn.table_exists('place'):
+            osmid = cur.scalar("SELECT max(osm_id) FROM place WHERE osm_type='N'")
+        else:
+            osmid = cur.scalar("SELECT max(osm_id) FROM placex WHERE osm_type='N'")
 
         if osmid is None:
             LOG.fatal("No data found in the database.")
-            raise RuntimeError("No data found in the database.")
+            raise UsageError("No data found in the database.")
 
     LOG.info("Using node id %d for timestamp lookup", osmid)
     # Get the node from the API to find the timestamp when it was created.
-    node_url = 'https://www.openstreetmap.org/api/0.6/node/{}/1'.format(osmid)
+    node_url = f'https://www.openstreetmap.org/api/0.6/node/{osmid}/1'
     data = get_url(node_url)
 
     match = re.search(r'timestamp="((\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}))Z"', data)
@@ -31,21 +42,27 @@ def compute_database_date(conn):
     if match is None:
         LOG.fatal("The node data downloaded from the API does not contain valid data.\n"
                   "URL used: %s", node_url)
-        raise RuntimeError("Bad API data.")
+        raise UsageError("Bad API data.")
 
-    LOG.debug("Found timestamp %s", match[1])
+    LOG.debug("Found timestamp %s", match.group(1))
 
-    return dt.datetime.fromisoformat(match[1]).replace(tzinfo=dt.timezone.utc)
+    return dt.datetime.strptime(match.group(1), ISODATE_FORMAT).replace(tzinfo=dt.timezone.utc)
 
 
 def set_status(conn, date, seq=None, indexed=True):
-    """ Replace the current status with the given status.
+    """ Replace the current status with the given status. If date is `None`
+        then only sequence and indexed will be updated as given. Otherwise
+        the whole status is replaced.
     """
-    assert date.tzinfo == dt.timezone.utc
+    assert date is None or date.tzinfo == dt.timezone.utc
     with conn.cursor() as cur:
-        cur.execute("TRUNCATE TABLE import_status")
-        cur.execute("""INSERT INTO import_status (lastimportdate, sequence_id, indexed)
-                       VALUES (%s, %s, %s)""", (date, seq, indexed))
+        if date is None:
+            cur.execute("UPDATE import_status set sequence_id = %s, indexed = %s",
+                        (seq, indexed))
+        else:
+            cur.execute("TRUNCATE TABLE import_status")
+            cur.execute("""INSERT INTO import_status (lastimportdate, sequence_id, indexed)
+                           VALUES (%s, %s, %s)""", (date, seq, indexed))
 
     conn.commit()