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, connect
19 from nominatim.db.utils import execute_file
20 from nominatim.db.sql_preprocessor import SQLPreprocessor
21 from nominatim.version import NOMINATIM_VERSION
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),
123 ('Search_WithinCountries', 'SEARCH_WITHIN_COUNTRIES', bool),
127 def import_wikipedia_articles(dsn: str, data_path: Path, ignore_errors: bool = False) -> int:
128 """ Replaces the wikipedia importance tables with new data.
129 The import is run in a single transaction so that the new data
130 is replace seamlessly.
132 Returns 0 if all was well and 1 if the importance file could not
133 be found. Throws an exception if there was an error reading the file.
135 datafile = data_path / 'wikimedia-importance.sql.gz'
137 if not datafile.exists():
141 DROP TABLE IF EXISTS "wikipedia_article";
142 DROP TABLE IF EXISTS "wikipedia_redirect"
145 execute_file(dsn, datafile, ignore_errors=ignore_errors,
146 pre_code=pre_code, post_code=post_code)
150 def import_secondary_importance(dsn: str, data_path: Path, ignore_errors: bool = False) -> int:
151 """ Replaces the secondary importance raster data table with new data.
153 Returns 0 if all was well and 1 if the raster SQL file could not
154 be found. Throws an exception if there was an error reading the file.
156 datafile = data_path / 'secondary_importance.sql.gz'
157 if not datafile.exists():
160 with connect(dsn) as conn:
161 postgis_version = conn.postgis_version_tuple()
162 if postgis_version[0] < 3:
163 LOG.error('PostGIS version is too old for using OSM raster data.')
166 execute_file(dsn, datafile, ignore_errors=ignore_errors)
170 def recompute_importance(conn: Connection) -> None:
171 """ Recompute wikipedia links and importance for all entries in placex.
172 This is a long-running operations that must not be executed in
173 parallel with updates.
175 with conn.cursor() as cur:
176 cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
178 UPDATE placex SET (wikipedia, importance) =
179 (SELECT wikipedia, importance
180 FROM compute_importance(extratags, country_code, rank_search, centroid))
183 UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
185 WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
186 and (s.wikipedia is null or s.importance < d.importance);
189 cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
193 def _quote_php_variable(var_type: Type[Any], config: Configuration,
194 conf_name: str) -> str:
196 return 'true' if config.get_bool(conf_name) else 'false'
199 return cast(str, getattr(config, conf_name))
201 if not getattr(config, conf_name):
205 value = str(config.get_path(conf_name) or '')
207 value = getattr(config, conf_name)
209 quoted = value.replace("'", "\\'")
213 def setup_website(basedir: Path, config: Configuration, conn: Connection) -> None:
214 """ Create the website script stubs.
216 if config.lib_dir.php is None:
217 LOG.info("Python frontend does not require website setup. Skipping.")
220 if not basedir.exists():
221 LOG.info('Creating website directory.')
224 assert config.project_dir is not None
225 basedata = dedent(f"""\
228 @define('CONST_Debug', $_GET['debug'] ?? false);
229 @define('CONST_LibDir', '{config.lib_dir.php}');
230 @define('CONST_TokenizerDir', '{config.project_dir / 'tokenizer'}');
231 @define('CONST_NominatimVersion', '{NOMINATIM_VERSION!s}');
235 for php_name, conf_name, var_type in PHP_CONST_DEFS:
236 varout = _quote_php_variable(var_type, config, conf_name)
238 basedata += f"@define('CONST_{php_name}', {varout});\n"
240 template = "\nrequire_once(CONST_LibDir.'/website/{}');\n"
242 search_name_table_exists = bool(conn and conn.table_exists('search_name'))
244 for script in WEBSITE_SCRIPTS:
245 if not search_name_table_exists and script == 'search.php':
246 out = template.format('reverse-only-search.php')
248 out = template.format(script)
250 (basedir / script).write_text(basedata + out, 'utf-8')
253 def invalidate_osm_object(osm_type: str, osm_id: int, conn: Connection,
254 recursive: bool = True) -> None:
255 """ Mark the given OSM object for reindexing. When 'recursive' is set
256 to True (the default), then all dependent objects are marked for
259 'osm_type' must be on of 'N' (node), 'W' (way) or 'R' (relation).
260 If the given object does not exist, then nothing happens.
262 assert osm_type in ('N', 'R', 'W')
264 LOG.warning("Invalidating OSM %s %s%s.",
265 OSM_TYPE[osm_type], osm_id,
266 ' and its dependent places' if recursive else '')
268 with conn.cursor() as cur:
270 sql = """SELECT place_force_update(place_id)
271 FROM placex WHERE osm_type = %s and osm_id = %s"""
273 sql = """UPDATE placex SET indexed_status = 2
274 WHERE osm_type = %s and osm_id = %s"""
276 cur.execute(sql, (osm_type, osm_id))