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 bringing auxiliary data in the database up-to-date.
10 from typing import MutableSequence, Tuple, Any, Type, Mapping, Sequence, List, cast
12 from textwrap import dedent
13 from pathlib import Path
15 from psycopg2 import sql as pysql
17 from nominatim.config import Configuration
18 from nominatim.db.connection import Connection
19 from nominatim.db.utils import execute_file
20 from nominatim.db.sql_preprocessor import SQLPreprocessor
21 from nominatim.version import version_str
23 LOG = logging.getLogger()
25 OSM_TYPE = {'N': 'node', 'W': 'way', 'R': 'relation'}
27 def _add_address_level_rows_from_entry(rows: MutableSequence[Tuple[Any, ...]],
28 entry: Mapping[str, Any]) -> None:
29 """ Converts a single entry from the JSON format for address rank
30 descriptions into a flat format suitable for inserting into a
31 PostgreSQL table and adds these lines to `rows`.
33 countries = entry.get('countries') or (None, )
34 for key, values in entry['tags'].items():
35 for value, ranks in values.items():
36 if isinstance(ranks, list):
37 rank_search, rank_address = ranks
39 rank_search = rank_address = ranks
42 for country in countries:
43 rows.append((country, key, value, rank_search, rank_address))
46 def load_address_levels(conn: Connection, table: str, levels: Sequence[Mapping[str, Any]]) -> None:
47 """ Replace the `address_levels` table with the contents of `levels'.
49 A new table is created any previously existing table is dropped.
50 The table has the following columns:
51 country, class, type, rank_search, rank_address
53 rows: List[Tuple[Any, ...]] = []
55 _add_address_level_rows_from_entry(rows, entry)
57 with conn.cursor() as cur:
60 cur.execute(pysql.SQL("""CREATE TABLE {} (
61 country_code varchar(2),
65 rank_address SMALLINT)
66 """).format(pysql.Identifier(table)))
68 cur.execute_values(pysql.SQL("INSERT INTO {} VALUES %s")
69 .format(pysql.Identifier(table)), rows)
71 cur.execute(pysql.SQL('CREATE UNIQUE INDEX ON {} (country_code, class, type)')
72 .format(pysql.Identifier(table)))
77 def load_address_levels_from_config(conn: Connection, config: Configuration) -> None:
78 """ Replace the `address_levels` table with the content as
79 defined in the given configuration. Uses the parameter
80 NOMINATIM_ADDRESS_LEVEL_CONFIG to determine the location of the
83 cfg = config.load_sub_configuration('', config='ADDRESS_LEVEL_CONFIG')
84 load_address_levels(conn, 'address_levels', cfg)
87 def create_functions(conn: Connection, config: Configuration,
88 enable_diff_updates: bool = True,
89 enable_debug: bool = False) -> None:
90 """ (Re)create the PL/pgSQL functions.
92 sql = SQLPreprocessor(conn, config)
94 sql.run_sql_file(conn, 'functions.sql',
95 disable_diff_updates=not enable_diff_updates,
110 # constants needed by PHP scripts: PHP name, config name, type
112 ('Database_DSN', 'DATABASE_DSN', str),
113 ('Default_Language', 'DEFAULT_LANGUAGE', str),
114 ('Log_DB', 'LOG_DB', bool),
115 ('Log_File', 'LOG_FILE', Path),
116 ('NoAccessControl', 'CORS_NOACCESSCONTROL', bool),
117 ('Places_Max_ID_count', 'LOOKUP_MAX_COUNT', int),
118 ('PolygonOutput_MaximumTypes', 'POLYGON_OUTPUT_MAX_TYPES', int),
119 ('Search_BatchMode', 'SEARCH_BATCH_MODE', bool),
120 ('Search_NameOnlySearchFrequencyThreshold', 'SEARCH_NAME_ONLY_THRESHOLD', str),
121 ('Use_US_Tiger_Data', 'USE_US_TIGER_DATA', bool),
122 ('MapIcon_URL', 'MAPICON_URL', str),
126 def import_wikipedia_articles(dsn: str, data_path: Path, ignore_errors: bool = False) -> int:
127 """ Replaces the wikipedia importance tables with new data.
128 The import is run in a single transaction so that the new data
129 is replace seamlessly.
131 Returns 0 if all was well and 1 if the importance file could not
132 be found. Throws an exception if there was an error reading the file.
134 datafile = data_path / 'wikimedia-importance.sql.gz'
136 if not datafile.exists():
140 DROP TABLE IF EXISTS "wikipedia_article";
141 DROP TABLE IF EXISTS "wikipedia_redirect"
144 execute_file(dsn, datafile, ignore_errors=ignore_errors,
145 pre_code=pre_code, post_code=post_code)
149 def import_osm_views_geotiff(dsn, data_path, ignore_errors=False):
150 """ Replaces the OSM views table with new data.
152 Returns 0 if all was well and 1 if the GeoTIFF file could not
153 be found. Throws an exception if there was an error reading the file.
155 datafile = data_path / 'osmviews.tiff'
157 if not datafile.exists():
161 DROP TABLE IF EXISTS "osmviews";
164 execute_file(dsn, datafile, ignore_errors=ignore_errors,
165 pre_code=pre_code, post_code=post_code)
169 def recompute_importance(conn: Connection) -> None:
170 """ Recompute wikipedia links and importance for all entries in placex.
171 This is a long-running operations that must not be executed in
172 parallel with updates.
174 with conn.cursor() as cur:
175 cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
177 UPDATE placex SET (wikipedia, importance) =
178 (SELECT wikipedia, importance
179 FROM compute_importance(extratags, country_code, osm_type, osm_id))
182 UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
184 WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
185 and (s.wikipedia is null or s.importance < d.importance);
188 cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
192 def _quote_php_variable(var_type: Type[Any], config: Configuration,
193 conf_name: str) -> str:
195 return 'true' if config.get_bool(conf_name) else 'false'
198 return cast(str, getattr(config, conf_name))
200 if not getattr(config, conf_name):
204 value = str(config.get_path(conf_name) or '')
206 value = getattr(config, conf_name)
208 quoted = value.replace("'", "\\'")
212 def setup_website(basedir: Path, config: Configuration, conn: Connection) -> None:
213 """ Create the website script stubs.
215 if not basedir.exists():
216 LOG.info('Creating website directory.')
219 template = dedent(f"""\
222 @define('CONST_Debug', $_GET['debug'] ?? false);
223 @define('CONST_LibDir', '{config.lib_dir.php}');
224 @define('CONST_TokenizerDir', '{config.project_dir / 'tokenizer'}');
225 @define('CONST_NominatimVersion', '{version_str()}');
229 for php_name, conf_name, var_type in PHP_CONST_DEFS:
230 varout = _quote_php_variable(var_type, config, conf_name)
232 template += f"@define('CONST_{php_name}', {varout});\n"
234 template += f"\nrequire_once('{config.lib_dir.php}/website/{{}}');\n"
236 search_name_table_exists = bool(conn and conn.table_exists('search_name'))
238 for script in WEBSITE_SCRIPTS:
239 if not search_name_table_exists and script == 'search.php':
240 (basedir / script).write_text(template.format('reverse-only-search.php'), 'utf-8')
242 (basedir / script).write_text(template.format(script), 'utf-8')
245 def invalidate_osm_object(osm_type: str, osm_id: int, conn: Connection,
246 recursive: bool = True) -> None:
247 """ Mark the given OSM object for reindexing. When 'recursive' is set
248 to True (the default), then all dependent objects are marked for
251 'osm_type' must be on of 'N' (node), 'W' (way) or 'R' (relation).
252 If the given object does not exist, then nothing happens.
254 assert osm_type in ('N', 'R', 'W')
256 LOG.warning("Invalidating OSM %s %s%s.",
257 OSM_TYPE[osm_type], osm_id,
258 ' and its dependent places' if recursive else '')
260 with conn.cursor() as cur:
262 sql = """SELECT place_force_update(place_id)
263 FROM placex WHERE osm_type = %s and osm_id = %s"""
265 sql = """UPDATE placex SET indexed_status = 2
266 WHERE osm_type = %s and osm_id = %s"""
268 cur.execute(sql, (osm_type, osm_id))