1 # SPDX-License-Identifier: GPL-3.0-or-later
3 # This file is part of Nominatim. (https://nominatim.org)
5 # Copyright (C) 2024 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
14 from psycopg.types.json import Json
16 from ..typing import DictCursorResult
17 from ..config import Configuration
18 from ..db.connection import connect, Cursor, register_hstore
19 from ..errors import UsageError
20 from ..tokenizer import factory as tokenizer_factory
21 from ..data.place_info import PlaceInfo
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(row_factory=psycopg.rows.dict_row) 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 # Enable printing of messages.
78 conn.add_notice_handler(lambda diag: print(diag.message_primary))
80 with tokenizer.name_analyzer() as analyzer:
81 cur.execute("""UPDATE placex
82 SET indexed_status = 0, address = %s, token_info = %s,
83 name = %s, linked_place_id = %s
84 WHERE place_id = %s""",
86 Json(analyzer.process_place(PlaceInfo(place))),
87 place['name'], place['linked_place_id'], place['place_id']))
89 # we do not want to keep the results
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 psycopg.DataError as exc:
105 raise UsageError('Invalid PostgreSQL time interval format') from exc