1 # SPDX-License-Identifier: GPL-2.0-only
3 # This file is part of Nominatim. (https://nominatim.org)
5 # Copyright (C) 2022 by the Nominatim developer community.
6 # For a full list of authors see the git log.
8 Access and helper functions for the status and status log table.
14 from nominatim.tools.exec_utils import get_url
15 from nominatim.errors import UsageError
17 LOG = logging.getLogger()
18 ISODATE_FORMAT = '%Y-%m-%dT%H:%M:%S'
20 def compute_database_date(conn):
21 """ Determine the date of the database from the newest object in the
24 # First, find the node with the highest ID in the database
25 with conn.cursor() as cur:
26 if conn.table_exists('place'):
27 osmid = cur.scalar("SELECT max(osm_id) FROM place WHERE osm_type='N'")
29 osmid = cur.scalar("SELECT max(osm_id) FROM placex WHERE osm_type='N'")
32 LOG.fatal("No data found in the database.")
33 raise UsageError("No data found in the database.")
35 LOG.info("Using node id %d for timestamp lookup", osmid)
36 # Get the node from the API to find the timestamp when it was created.
37 node_url = f'https://www.openstreetmap.org/api/0.6/node/{osmid}/1'
38 data = get_url(node_url)
40 match = re.search(r'timestamp="((\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}))Z"', data)
43 LOG.fatal("The node data downloaded from the API does not contain valid data.\n"
44 "URL used: %s", node_url)
45 raise UsageError("Bad API data.")
47 LOG.debug("Found timestamp %s", match.group(1))
49 return dt.datetime.strptime(match.group(1), ISODATE_FORMAT).replace(tzinfo=dt.timezone.utc)
52 def set_status(conn, date, seq=None, indexed=True):
53 """ Replace the current status with the given status. If date is `None`
54 then only sequence and indexed will be updated as given. Otherwise
55 the whole status is replaced.
57 assert date is None or date.tzinfo == dt.timezone.utc
58 with conn.cursor() as cur:
60 cur.execute("UPDATE import_status set sequence_id = %s, indexed = %s",
63 cur.execute("TRUNCATE TABLE import_status")
64 cur.execute("""INSERT INTO import_status (lastimportdate, sequence_id, indexed)
65 VALUES (%s, %s, %s)""", (date, seq, indexed))
71 """ Return the current status as a triple of (date, sequence, indexed).
72 If status has not been set up yet, a triple of None is returned.
74 with conn.cursor() as cur:
75 cur.execute("SELECT * FROM import_status LIMIT 1")
77 return None, None, None
80 return row['lastimportdate'], row['sequence_id'], row['indexed']
83 def set_indexed(conn, state):
84 """ Set the indexed flag in the status table to the given state.
86 with conn.cursor() as cur:
87 cur.execute("UPDATE import_status SET indexed = %s", (state, ))
91 def log_status(conn, start, event, batchsize=None):
92 """ Write a new status line to the `import_osmosis_log` table.
94 with conn.cursor() as cur:
95 cur.execute("""INSERT INTO import_osmosis_log
96 (batchend, batchseq, batchsize, starttime, endtime, event)
97 SELECT lastimportdate, sequence_id, %s, %s, now(), %s FROM import_status""",
98 (batchsize, start, event))