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
15 from nominatim.config import Configuration
16 from nominatim.db.connection import connect, Cursor
17 from nominatim.tokenizer import factory as tokenizer_factory
18 from nominatim.errors import UsageError
19 from nominatim.data.place_info import PlaceInfo
20 from nominatim.typing import DictCursorResult
22 LOG = logging.getLogger()
24 def _get_place_info(cursor: Cursor, osm_id: Optional[str],
25 place_id: Optional[int]) -> DictCursorResult:
26 sql = """SELECT place_id, extra.*
27 FROM placex, LATERAL placex_indexing_prepare(placex) as extra
30 values: Tuple[Any, ...]
32 osm_type = osm_id[0].upper()
33 if osm_type not in 'NWR' or not osm_id[1:].isdigit():
34 LOG.fatal('OSM ID must be of form <N|W|R><id>. Got: %s', osm_id)
35 raise UsageError("OSM ID parameter badly formatted")
37 sql += ' WHERE placex.osm_type = %s AND placex.osm_id = %s'
38 values = (osm_type, int(osm_id[1:]))
39 elif place_id is not None:
40 sql += ' WHERE placex.place_id = %s'
43 LOG.fatal("No OSM object given to index.")
44 raise UsageError("OSM object not found")
46 cursor.execute(sql + ' LIMIT 1', values)
48 if cursor.rowcount < 1:
49 LOG.fatal("OSM object %s not found in database.", osm_id)
50 raise UsageError("OSM object not found")
52 return cast(DictCursorResult, cursor.fetchone())
55 def analyse_indexing(config: Configuration, osm_id: Optional[str] = None,
56 place_id: Optional[int] = None) -> None:
57 """ Analyse indexing of a single Nominatim object.
59 with connect(config.get_libpq_dsn()) as conn:
61 with conn.cursor() as cur:
62 place = _get_place_info(cur, osm_id, place_id)
64 cur.execute("update placex set indexed_status = 2 where place_id = %s",
65 (place['place_id'], ))
67 cur.execute("""SET auto_explain.log_min_duration = '0';
68 SET auto_explain.log_analyze = 'true';
69 SET auto_explain.log_nested_statements = 'true';
71 SET client_min_messages = LOG;
72 SET log_min_messages = FATAL""")
74 tokenizer = tokenizer_factory.get_tokenizer_for_db(config)
76 with tokenizer.name_analyzer() as analyzer:
77 cur.execute("""UPDATE placex
78 SET indexed_status = 0, address = %s, token_info = %s,
79 name = %s, linked_place_id = %s
80 WHERE place_id = %s""",
82 Json(analyzer.process_place(PlaceInfo(place))),
83 place['name'], place['linked_place_id'], place['place_id']))
85 # we do not want to keep the results
88 for msg in conn.notices: