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 Functions for database analysis and maintenance.
10 from typing import Optional, Tuple, Any, cast
13 from psycopg2.extras import Json, register_hstore
14 from psycopg2 import DataError
16 from nominatim.config import Configuration
17 from nominatim.db.connection import connect, Cursor
18 from nominatim.tokenizer import factory as tokenizer_factory
19 from nominatim.errors import UsageError
20 from nominatim.data.place_info import PlaceInfo
21 from nominatim.typing import DictCursorResult
23 LOG = logging.getLogger()
25 def _get_place_info(cursor: Cursor, osm_id: Optional[str],
26 place_id: Optional[int]) -> DictCursorResult:
27 sql = """SELECT place_id, extra.*
28 FROM placex, LATERAL placex_indexing_prepare(placex) as extra
31 values: Tuple[Any, ...]
33 osm_type = osm_id[0].upper()
34 if osm_type not in 'NWR' or not osm_id[1:].isdigit():
35 LOG.fatal('OSM ID must be of form <N|W|R><id>. Got: %s', osm_id)
36 raise UsageError("OSM ID parameter badly formatted")
38 sql += ' WHERE placex.osm_type = %s AND placex.osm_id = %s'
39 values = (osm_type, int(osm_id[1:]))
40 elif place_id is not None:
41 sql += ' WHERE placex.place_id = %s'
44 LOG.fatal("No OSM object given to index.")
45 raise UsageError("OSM object not found")
47 cursor.execute(sql + ' LIMIT 1', values)
49 if cursor.rowcount < 1:
50 LOG.fatal("OSM object %s not found in database.", osm_id)
51 raise UsageError("OSM object not found")
53 return cast(DictCursorResult, cursor.fetchone())
56 def analyse_indexing(config: Configuration, osm_id: Optional[str] = None,
57 place_id: Optional[int] = None) -> None:
58 """ Analyse indexing of a single Nominatim object.
60 with connect(config.get_libpq_dsn()) as conn:
62 with conn.cursor() as cur:
63 place = _get_place_info(cur, osm_id, place_id)
65 cur.execute("update placex set indexed_status = 2 where place_id = %s",
66 (place['place_id'], ))
68 cur.execute("""SET auto_explain.log_min_duration = '0';
69 SET auto_explain.log_analyze = 'true';
70 SET auto_explain.log_nested_statements = 'true';
72 SET client_min_messages = LOG;
73 SET log_min_messages = FATAL""")
75 tokenizer = tokenizer_factory.get_tokenizer_for_db(config)
77 with tokenizer.name_analyzer() as analyzer:
78 cur.execute("""UPDATE placex
79 SET indexed_status = 0, address = %s, token_info = %s,
80 name = %s, linked_place_id = %s
81 WHERE place_id = %s""",
83 Json(analyzer.process_place(PlaceInfo(place))),
84 place['name'], place['linked_place_id'], place['place_id']))
86 # we do not want to keep the results
89 for msg in conn.notices:
93 def clean_deleted_relations(config: Configuration, age: str) -> None:
94 """ Clean deleted relations older than a given age
96 with connect(config.get_libpq_dsn()) as conn:
97 with conn.cursor() as cur:
99 cur.execute("""SELECT place_force_delete(p.place_id)
100 FROM import_polygon_delete d, placex p
101 WHERE p.osm_type = d.osm_type AND p.osm_id = d.osm_id
102 AND age(p.indexed_date) > %s::interval""",
104 except DataError as exc:
105 raise UsageError('Invalid PostgreSQL time interval format') from exc