mirror of
https://github.com/osm-search/Nominatim.git
synced 2026-02-16 15:47:58 +00:00
64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
"""
|
|
Access and helper functions for the status table.
|
|
"""
|
|
import datetime as dt
|
|
import logging
|
|
import re
|
|
|
|
from ..tools.exec_utils import get_url
|
|
|
|
LOG = logging.getLogger()
|
|
|
|
def compute_database_date(conn):
|
|
""" Determine the date of the database from the newest object in the
|
|
data base.
|
|
"""
|
|
# 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 osmid is None:
|
|
LOG.fatal("No data found in the database.")
|
|
raise RuntimeError("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)
|
|
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)
|
|
|
|
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.")
|
|
|
|
LOG.debug("Found timestamp %s", match[1])
|
|
|
|
return dt.datetime.fromisoformat(match[1]).replace(tzinfo=dt.timezone.utc)
|
|
|
|
|
|
def set_status(conn, date, seq=None, indexed=True):
|
|
""" Replace the current status with the given status.
|
|
"""
|
|
assert 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))
|
|
|
|
conn.commit()
|
|
|
|
|
|
def get_status(conn):
|
|
""" Return the current status as a triple of (date, sequence, indexed).
|
|
If status has not been set up yet, a triple of None is returned.
|
|
"""
|
|
with conn.cursor() as cur:
|
|
cur.execute("SELECT * FROM import_status LIMIT 1")
|
|
if cur.rowcount < 1:
|
|
return None, None, None
|
|
|
|
row = cur.fetchone()
|
|
return row['lastimportdate'], row['sequence_id'], row['indexed']
|