+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
"""
Functions for bringing auxiliary data in the database up-to-date.
"""
-from ..db.utils import execute_file
+import logging
+from textwrap import dedent
+from pathlib import Path
-def update_postcodes(conn, datadir):
- """ Recalculate postcode centroids and add, remove and update entries in the
- location_postcode table. `conn` is an opne connection to the database.
+from psycopg2 import sql as pysql
+
+from nominatim.db.utils import execute_file
+from nominatim.db.sql_preprocessor import SQLPreprocessor
+from nominatim.version import NOMINATIM_VERSION
+
+LOG = logging.getLogger()
+
+
+def _add_address_level_rows_from_entry(rows, entry):
+ """ Converts a single entry from the JSON format for address rank
+ descriptions into a flat format suitable for inserting into a
+ PostgreSQL table and adds these lines to `rows`.
+ """
+ countries = entry.get('countries') or (None, )
+ for key, values in entry['tags'].items():
+ for value, ranks in values.items():
+ if isinstance(ranks, list):
+ rank_search, rank_address = ranks
+ else:
+ rank_search = rank_address = ranks
+ if not value:
+ value = None
+ for country in countries:
+ rows.append((country, key, value, rank_search, rank_address))
+
+def load_address_levels(conn, table, levels):
+ """ Replace the `address_levels` table with the contents of `levels'.
+
+ A new table is created any previously existing table is dropped.
+ The table has the following columns:
+ country, class, type, rank_search, rank_address
+ """
+ rows = []
+ for entry in levels:
+ _add_address_level_rows_from_entry(rows, entry)
+
+ with conn.cursor() as cur:
+ cur.drop_table(table)
+
+ cur.execute("""CREATE TABLE {} (country_code varchar(2),
+ class TEXT,
+ type TEXT,
+ rank_search SMALLINT,
+ rank_address SMALLINT)""".format(table))
+
+ cur.execute_values(pysql.SQL("INSERT INTO {} VALUES %s")
+ .format(pysql.Identifier(table)), rows)
+
+ cur.execute('CREATE UNIQUE INDEX ON {} (country_code, class, type)'.format(table))
+
+ conn.commit()
+
+
+def load_address_levels_from_config(conn, config):
+ """ Replace the `address_levels` table with the content as
+ defined in the given configuration. Uses the parameter
+ NOMINATIM_ADDRESS_LEVEL_CONFIG to determine the location of the
+ configuration file.
+ """
+ cfg = config.load_sub_configuration('', config='ADDRESS_LEVEL_CONFIG')
+ load_address_levels(conn, 'address_levels', cfg)
+
+
+def create_functions(conn, config, enable_diff_updates=True, enable_debug=False):
+ """ (Re)create the PL/pgSQL functions.
+ """
+ sql = SQLPreprocessor(conn, config)
+
+ sql.run_sql_file(conn, 'functions.sql',
+ disable_diff_updates=not enable_diff_updates,
+ debug=enable_debug)
+
+
+
+WEBSITE_SCRIPTS = (
+ 'deletable.php',
+ 'details.php',
+ 'lookup.php',
+ 'polygons.php',
+ 'reverse.php',
+ 'search.php',
+ 'status.php'
+)
+
+# constants needed by PHP scripts: PHP name, config name, type
+PHP_CONST_DEFS = (
+ ('Database_DSN', 'DATABASE_DSN', str),
+ ('Default_Language', 'DEFAULT_LANGUAGE', str),
+ ('Log_DB', 'LOG_DB', bool),
+ ('Log_File', 'LOG_FILE', Path),
+ ('NoAccessControl', 'CORS_NOACCESSCONTROL', bool),
+ ('Places_Max_ID_count', 'LOOKUP_MAX_COUNT', int),
+ ('PolygonOutput_MaximumTypes', 'POLYGON_OUTPUT_MAX_TYPES', int),
+ ('Search_BatchMode', 'SEARCH_BATCH_MODE', bool),
+ ('Search_NameOnlySearchFrequencyThreshold', 'SEARCH_NAME_ONLY_THRESHOLD', str),
+ ('Use_US_Tiger_Data', 'USE_US_TIGER_DATA', bool),
+ ('MapIcon_URL', 'MAPICON_URL', str),
+)
+
+
+def import_wikipedia_articles(dsn, data_path, ignore_errors=False):
+ """ Replaces the wikipedia importance tables with new data.
+ The import is run in a single transaction so that the new data
+ is replace seemlessly.
+
+ Returns 0 if all was well and 1 if the importance file could not
+ be found. Throws an exception if there was an error reading the file.
+ """
+ datafile = data_path / 'wikimedia-importance.sql.gz'
+
+ if not datafile.exists():
+ return 1
+
+ pre_code = """BEGIN;
+ DROP TABLE IF EXISTS "wikipedia_article";
+ DROP TABLE IF EXISTS "wikipedia_redirect"
+ """
+ post_code = "COMMIT"
+ execute_file(dsn, datafile, ignore_errors=ignore_errors,
+ pre_code=pre_code, post_code=post_code)
+
+ return 0
+
+
+def recompute_importance(conn):
+ """ Recompute wikipedia links and importance for all entries in placex.
+ This is a long-running operations that must not be executed in
+ parallel with updates.
"""
- execute_file(conn, datadir / 'sql' / 'update-postcodes.sql')
+ with conn.cursor() as cur:
+ cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
+ cur.execute("""
+ UPDATE placex SET (wikipedia, importance) =
+ (SELECT wikipedia, importance
+ FROM compute_importance(extratags, country_code, osm_type, osm_id))
+ """)
+ cur.execute("""
+ UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
+ FROM placex d
+ WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
+ and (s.wikipedia is null or s.importance < d.importance);
+ """)
+
+ cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
+ conn.commit()
+
+
+def _quote_php_variable(var_type, config, conf_name):
+ if var_type == bool:
+ return 'true' if config.get_bool(conf_name) else 'false'
+ if var_type == int:
+ return getattr(config, conf_name)
-def recompute_word_counts(conn, datadir):
- """ Compute the frequency of full-word search terms.
+ if not getattr(config, conf_name):
+ return 'false'
+
+ if var_type == Path:
+ value = str(config.get_path(conf_name))
+ else:
+ value = getattr(config, conf_name)
+
+ quoted = value.replace("'", "\\'")
+ return f"'{quoted}'"
+
+
+def setup_website(basedir, config, conn):
+ """ Create the website script stubs.
"""
- execute_file(conn, datadir / 'sql' / 'words_from_search_name.sql')
+ if not basedir.exists():
+ LOG.info('Creating website directory.')
+ basedir.mkdir()
+
+ template = dedent("""\
+ <?php
+
+ @define('CONST_Debug', $_GET['debug'] ?? false);
+ @define('CONST_LibDir', '{0}');
+ @define('CONST_TokenizerDir', '{2}');
+ @define('CONST_NominatimVersion', '{1[0]}.{1[1]}.{1[2]}-{1[3]}');
+
+ """.format(config.lib_dir.php, NOMINATIM_VERSION,
+ config.project_dir / 'tokenizer'))
+
+ for php_name, conf_name, var_type in PHP_CONST_DEFS:
+ varout = _quote_php_variable(var_type, config, conf_name)
+
+ template += f"@define('CONST_{php_name}', {varout});\n"
+
+ template += f"\nrequire_once('{config.lib_dir.php}/website/{{}}');\n"
+
+ search_name_table_exists = bool(conn and conn.table_exists('search_name'))
+
+ for script in WEBSITE_SCRIPTS:
+ if not search_name_table_exists and script == 'search.php':
+ (basedir / script).write_text(template.format('reverse-only-search.php'), 'utf-8')
+ else:
+ (basedir / script).write_text(template.format(script), 'utf-8')
projects / nominatim.git / blobdiff