X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/e6c2842b66c607400a0a95b7b8e8de8cd5b12d51..554d25e2e508c57fe763cee95b574b8e7c66eb0b:/nominatim/tools/refresh.py?ds=sidebyside diff --git a/nominatim/tools/refresh.py b/nominatim/tools/refresh.py index 859b5646..00ae5dc9 100644 --- a/nominatim/tools/refresh.py +++ b/nominatim/tools/refresh.py @@ -1,16 +1,198 @@ """ Functions for bringing auxiliary data in the database up-to-date. """ -from ..db.utils import execute_file +import json +import logging +from textwrap import dedent -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_file(conn, config_file): + """ Replace the `address_levels` table with the contents of the config + file. + """ + with config_file.open('r') as fdesc: + load_address_levels(conn, 'address_levels', json.load(fdesc)) + + +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', str), + ('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. """ - execute_file(conn, datadir / 'sql' / 'update-postcodes.sql') + 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_word_counts(conn, datadir): - """ Compute the frequency of full-word search terms. +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' / 'words_from_search_name.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) + + if not getattr(config, conf_name): + return 'false' + + quoted = getattr(config, conf_name).replace("'", "\\'") + return f"'{quoted}'" + + +def setup_website(basedir, config, conn): + """ Create the website script stubs. + """ + if not basedir.exists(): + LOG.info('Creating website directory.') + basedir.mkdir() + + template = dedent("""\ +