2 Access and helper functions for the status and status log table.
8 from nominatim.tools.exec_utils import get_url
9 from nominatim.errors import UsageError
11 LOG = logging.getLogger()
12 ISODATE_FORMAT = '%Y-%m-%dT%H:%M:%S'
14 def compute_database_date(conn):
15 """ Determine the date of the database from the newest object in the
18 # First, find the node with the highest ID in the database
19 with conn.cursor() as cur:
20 osmid = cur.scalar("SELECT max(osm_id) FROM place WHERE osm_type='N'")
23 LOG.fatal("No data found in the database.")
24 raise UsageError("No data found in the database.")
26 LOG.info("Using node id %d for timestamp lookup", osmid)
27 # Get the node from the API to find the timestamp when it was created.
28 node_url = 'https://www.openstreetmap.org/api/0.6/node/{}/1'.format(osmid)
29 data = get_url(node_url)
31 match = re.search(r'timestamp="((\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}))Z"', data)
34 LOG.fatal("The node data downloaded from the API does not contain valid data.\n"
35 "URL used: %s", node_url)
36 raise UsageError("Bad API data.")
38 LOG.debug("Found timestamp %s", match.group(1))
40 return dt.datetime.strptime(match.group(1), ISODATE_FORMAT).replace(tzinfo=dt.timezone.utc)
43 def set_status(conn, date, seq=None, indexed=True):
44 """ Replace the current status with the given status. If date is `None`
45 then only sequence and indexed will be updated as given. Otherwise
46 the whole status is replaced.
48 assert date is None or date.tzinfo == dt.timezone.utc
49 with conn.cursor() as cur:
51 cur.execute("UPDATE import_status set sequence_id = %s, indexed = %s",
54 cur.execute("TRUNCATE TABLE import_status")
55 cur.execute("""INSERT INTO import_status (lastimportdate, sequence_id, indexed)
56 VALUES (%s, %s, %s)""", (date, seq, indexed))
62 """ Return the current status as a triple of (date, sequence, indexed).
63 If status has not been set up yet, a triple of None is returned.
65 with conn.cursor() as cur:
66 cur.execute("SELECT * FROM import_status LIMIT 1")
68 return None, None, None
71 return row['lastimportdate'], row['sequence_id'], row['indexed']
74 def set_indexed(conn, state):
75 """ Set the indexed flag in the status table to the given state.
77 with conn.cursor() as cur:
78 cur.execute("UPDATE import_status SET indexed = %s", (state, ))
82 def log_status(conn, start, event, batchsize=None):
83 """ Write a new status line to the `import_osmosis_log` table.
85 with conn.cursor() as cur:
86 cur.execute("""INSERT INTO import_osmosis_log
87 (batchend, batchseq, batchsize, starttime, endtime, event)
88 SELECT lastimportdate, sequence_id, %s, %s, now(), %s FROM import_status""",
89 (batchsize, start, event))