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.
11 from textwrap import dedent
12 from pathlib import Path
14 from psycopg2 import sql as pysql
16 from nominatim.db.utils import execute_file
17 from nominatim.db.sql_preprocessor import SQLPreprocessor
18 from nominatim.version import NOMINATIM_VERSION
20 LOG = logging.getLogger()
23 def _add_address_level_rows_from_entry(rows, entry):
24 """ Converts a single entry from the JSON format for address rank
25 descriptions into a flat format suitable for inserting into a
26 PostgreSQL table and adds these lines to `rows`.
28 countries = entry.get('countries') or (None, )
29 for key, values in entry['tags'].items():
30 for value, ranks in values.items():
31 if isinstance(ranks, list):
32 rank_search, rank_address = ranks
34 rank_search = rank_address = ranks
37 for country in countries:
38 rows.append((country, key, value, rank_search, rank_address))
40 def load_address_levels(conn, table, levels):
41 """ Replace the `address_levels` table with the contents of `levels'.
43 A new table is created any previously existing table is dropped.
44 The table has the following columns:
45 country, class, type, rank_search, rank_address
49 _add_address_level_rows_from_entry(rows, entry)
51 with conn.cursor() as cur:
54 cur.execute("""CREATE TABLE {} (country_code varchar(2),
58 rank_address SMALLINT)""".format(table))
60 cur.execute_values(pysql.SQL("INSERT INTO {} VALUES %s")
61 .format(pysql.Identifier(table)), rows)
63 cur.execute('CREATE UNIQUE INDEX ON {} (country_code, class, type)'.format(table))
68 def load_address_levels_from_config(conn, config):
69 """ Replace the `address_levels` table with the content as
70 defined in the given configuration. Uses the parameter
71 NOMINATIM_ADDRESS_LEVEL_CONFIG to determine the location of the
74 cfg = config.load_sub_configuration('', config='ADDRESS_LEVEL_CONFIG')
75 load_address_levels(conn, 'address_levels', cfg)
78 def create_functions(conn, config, enable_diff_updates=True, enable_debug=False):
79 """ (Re)create the PL/pgSQL functions.
81 sql = SQLPreprocessor(conn, config)
83 sql.run_sql_file(conn, 'functions.sql',
84 disable_diff_updates=not enable_diff_updates,
99 # constants needed by PHP scripts: PHP name, config name, type
101 ('Database_DSN', 'DATABASE_DSN', str),
102 ('Default_Language', 'DEFAULT_LANGUAGE', str),
103 ('Log_DB', 'LOG_DB', bool),
104 ('Log_File', 'LOG_FILE', Path),
105 ('NoAccessControl', 'CORS_NOACCESSCONTROL', bool),
106 ('Places_Max_ID_count', 'LOOKUP_MAX_COUNT', int),
107 ('PolygonOutput_MaximumTypes', 'POLYGON_OUTPUT_MAX_TYPES', int),
108 ('Search_BatchMode', 'SEARCH_BATCH_MODE', bool),
109 ('Search_NameOnlySearchFrequencyThreshold', 'SEARCH_NAME_ONLY_THRESHOLD', str),
110 ('Use_US_Tiger_Data', 'USE_US_TIGER_DATA', bool),
111 ('MapIcon_URL', 'MAPICON_URL', str),
115 def import_wikipedia_articles(dsn, data_path, ignore_errors=False):
116 """ Replaces the wikipedia importance tables with new data.
117 The import is run in a single transaction so that the new data
118 is replace seemlessly.
120 Returns 0 if all was well and 1 if the importance file could not
121 be found. Throws an exception if there was an error reading the file.
123 datafile = data_path / 'wikimedia-importance.sql.gz'
125 if not datafile.exists():
129 DROP TABLE IF EXISTS "wikipedia_article";
130 DROP TABLE IF EXISTS "wikipedia_redirect"
133 execute_file(dsn, datafile, ignore_errors=ignore_errors,
134 pre_code=pre_code, post_code=post_code)
139 def recompute_importance(conn):
140 """ Recompute wikipedia links and importance for all entries in placex.
141 This is a long-running operations that must not be executed in
142 parallel with updates.
144 with conn.cursor() as cur:
145 cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
147 UPDATE placex SET (wikipedia, importance) =
148 (SELECT wikipedia, importance
149 FROM compute_importance(extratags, country_code, osm_type, osm_id))
152 UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
154 WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
155 and (s.wikipedia is null or s.importance < d.importance);
158 cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
162 def _quote_php_variable(var_type, config, conf_name):
164 return 'true' if config.get_bool(conf_name) else 'false'
167 return getattr(config, conf_name)
169 if not getattr(config, conf_name):
173 value = str(config.get_path(conf_name))
175 value = getattr(config, conf_name)
177 quoted = value.replace("'", "\\'")
181 def setup_website(basedir, config, conn):
182 """ Create the website script stubs.
184 if not basedir.exists():
185 LOG.info('Creating website directory.')
188 template = dedent("""\
191 @define('CONST_Debug', $_GET['debug'] ?? false);
192 @define('CONST_LibDir', '{0}');
193 @define('CONST_TokenizerDir', '{2}');
194 @define('CONST_NominatimVersion', '{1[0]}.{1[1]}.{1[2]}-{1[3]}');
196 """.format(config.lib_dir.php, NOMINATIM_VERSION,
197 config.project_dir / 'tokenizer'))
199 for php_name, conf_name, var_type in PHP_CONST_DEFS:
200 varout = _quote_php_variable(var_type, config, conf_name)
202 template += f"@define('CONST_{php_name}', {varout});\n"
204 template += f"\nrequire_once('{config.lib_dir.php}/website/{{}}');\n"
206 search_name_table_exists = bool(conn and conn.table_exists('search_name'))
208 for script in WEBSITE_SCRIPTS:
209 if not search_name_table_exists and script == 'search.php':
210 (basedir / script).write_text(template.format('reverse-only-search.php'), 'utf-8')
212 (basedir / script).write_text(template.format(script), 'utf-8')