X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/f3c4196c758a7720aefc26a7043bf1c6553028e2..cdfc8628f22a5be2d8ad402adeb9bd6bfcaeface:/nominatim/tools/database_import.py diff --git a/nominatim/tools/database_import.py b/nominatim/tools/database_import.py index 0dd93490..fa60abf2 100644 --- a/nominatim/tools/database_import.py +++ b/nominatim/tools/database_import.py @@ -1,6 +1,13 @@ +# 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 setting up and importing a new Nominatim database. """ +from typing import Tuple, Optional, Union, Sequence, MutableMapping, Any import logging import os import selectors @@ -8,11 +15,10 @@ import subprocess from pathlib import Path import psutil -import psycopg2.extras from psycopg2 import sql as pysql -from nominatim.db.connection import connect, get_pg_env -from nominatim.db import utils as db_utils +from nominatim.config import Configuration +from nominatim.db.connection import connect, get_pg_env, Connection from nominatim.db.async_connection import DBConnection from nominatim.db.sql_preprocessor import SQLPreprocessor from nominatim.tools.exec_utils import run_osm2pgsql @@ -21,24 +27,24 @@ from nominatim.version import POSTGRESQL_REQUIRED_VERSION, POSTGIS_REQUIRED_VERS LOG = logging.getLogger() -def setup_database_skeleton(dsn, data_dir, no_partitions, rouser=None): - """ Create a new database for Nominatim and populate it with the - essential extensions and data. +def _require_version(module: str, actual: Tuple[int, int], expected: Tuple[int, int]) -> None: + """ Compares the version for the given module and raises an exception + if the actual version is too old. """ - LOG.warning('Creating database') - create_db(dsn, rouser) + if actual < expected: + LOG.fatal('Minimum supported version of %s is %d.%d. ' + 'Found version %d.%d.', + module, expected[0], expected[1], actual[0], actual[1]) + raise UsageError(f'{module} is too old.') - LOG.warning('Setting up database') - with connect(dsn) as conn: - setup_extensions(conn) - LOG.warning('Loading basic data') - import_base_data(dsn, data_dir, no_partitions) +def setup_database_skeleton(dsn: str, rouser: Optional[str] = None) -> None: + """ Create a new database for Nominatim and populate it with the + essential extensions. + The function fails when the database already exists or Postgresql or + PostGIS versions are too old. -def create_db(dsn, rouser=None): - """ Create a new database for the given DSN. Fails when the database - already exists or the PostgreSQL version is too old. Uses `createdb` to create the database. If 'rouser' is given, then the function also checks that the user @@ -52,58 +58,33 @@ def create_db(dsn, rouser=None): raise UsageError('Creating new database failed.') with connect(dsn) as conn: - postgres_version = conn.server_version_tuple() - if postgres_version < POSTGRESQL_REQUIRED_VERSION: - LOG.fatal('Minimum supported version of Postgresql is %d.%d. ' - 'Found version %d.%d.', - POSTGRESQL_REQUIRED_VERSION[0], POSTGRESQL_REQUIRED_VERSION[1], - postgres_version[0], postgres_version[1]) - raise UsageError('PostgreSQL server is too old.') + _require_version('PostgreSQL server', + conn.server_version_tuple(), + POSTGRESQL_REQUIRED_VERSION) if rouser is not None: with conn.cursor() as cur: cnt = cur.scalar('SELECT count(*) FROM pg_user where usename = %s', (rouser, )) if cnt == 0: - LOG.fatal("Web user '%s' does not exists. Create it with:\n" + LOG.fatal("Web user '%s' does not exist. Create it with:\n" "\n createuser %s", rouser, rouser) raise UsageError('Missing read-only user.') + # Create extensions. + with conn.cursor() as cur: + cur.execute('CREATE EXTENSION IF NOT EXISTS hstore') + cur.execute('CREATE EXTENSION IF NOT EXISTS postgis') + conn.commit() + _require_version('PostGIS', + conn.postgis_version_tuple(), + POSTGIS_REQUIRED_VERSION) -def setup_extensions(conn): - """ Set up all extensions needed for Nominatim. Also checks that the - versions of the extensions are sufficient. - """ - with conn.cursor() as cur: - cur.execute('CREATE EXTENSION IF NOT EXISTS hstore') - cur.execute('CREATE EXTENSION IF NOT EXISTS postgis') - conn.commit() - - postgis_version = conn.postgis_version_tuple() - if postgis_version < POSTGIS_REQUIRED_VERSION: - LOG.fatal('Minimum supported version of PostGIS is %d.%d. ' - 'Found version %d.%d.', - POSTGIS_REQUIRED_VERSION[0], POSTGIS_REQUIRED_VERSION[1], - postgis_version[0], postgis_version[1]) - raise UsageError('PostGIS version is too old.') - - -def import_base_data(dsn, sql_dir, ignore_partitions=False): - """ Create and populate the tables with basic static data that provides - the background for geocoding. Data is assumed to not yet exist. - """ - db_utils.execute_file(dsn, sql_dir / 'country_name.sql') - db_utils.execute_file(dsn, sql_dir / 'country_osm_grid.sql.gz') - - if ignore_partitions: - with connect(dsn) as conn: - with conn.cursor() as cur: - cur.execute('UPDATE country_name SET partition = 0') - conn.commit() - -def import_osm_data(osm_files, options, drop=False, ignore_errors=False): +def import_osm_data(osm_files: Union[Path, Sequence[Path]], + options: MutableMapping[str, Any], + drop: bool = False, ignore_errors: bool = False) -> None: """ Import the given OSM files. 'options' contains the list of default settings for osm2pgsql. """ @@ -114,7 +95,7 @@ def import_osm_data(osm_files, options, drop=False, ignore_errors=False): if not options['flatnode_file'] and options['osm2pgsql_cache'] == 0: # Make some educated guesses about cache size based on the size # of the import file and the available memory. - mem = psutil.virtual_memory() + mem = psutil.virtual_memory() # type: ignore[no-untyped-call] fsize = 0 if isinstance(osm_files, list): for fname in osm_files: @@ -140,7 +121,7 @@ def import_osm_data(osm_files, options, drop=False, ignore_errors=False): Path(options['flatnode_file']).unlink() -def create_tables(conn, config, reverse_only=False): +def create_tables(conn: Connection, config: Configuration, reverse_only: bool = False) -> None: """ Create the set of basic tables. When `reverse_only` is True, then the main table for searching will be skipped and only reverse search is possible. @@ -151,7 +132,7 @@ def create_tables(conn, config, reverse_only=False): sql.run_sql_file(conn, 'tables.sql') -def create_table_triggers(conn, config): +def create_table_triggers(conn: Connection, config: Configuration) -> None: """ Create the triggers for the tables. The trigger functions must already have been imported with refresh.create_functions(). """ @@ -159,14 +140,14 @@ def create_table_triggers(conn, config): sql.run_sql_file(conn, 'table-triggers.sql') -def create_partition_tables(conn, config): +def create_partition_tables(conn: Connection, config: Configuration) -> None: """ Create tables that have explicit partitioning. """ sql = SQLPreprocessor(conn, config) sql.run_sql_file(conn, 'partition-tables.src.sql') -def truncate_data_tables(conn): +def truncate_data_tables(conn: Connection) -> None: """ Truncate all data tables to prepare for a fresh load. """ with conn.cursor() as cur: @@ -197,7 +178,7 @@ _COPY_COLUMNS = pysql.SQL(',').join(map(pysql.Identifier, 'extratags', 'geometry'))) -def load_data(dsn, threads): +def load_data(dsn: str, threads: int) -> None: """ Copy data into the word and placex table. """ sel = selectors.DefaultSelector() @@ -239,12 +220,12 @@ def load_data(dsn, threads): print('.', end='', flush=True) print('\n') - with connect(dsn) as conn: - with conn.cursor() as cur: + with connect(dsn) as syn_conn: + with syn_conn.cursor() as cur: cur.execute('ANALYSE') -def create_search_indices(conn, config, drop=False): +def create_search_indices(conn: Connection, config: Configuration, drop: bool = False) -> None: """ Create tables that have explicit partitioning. """ @@ -257,44 +238,9 @@ def create_search_indices(conn, config, drop=False): bad_indices = [row[0] for row in list(cur)] for idx in bad_indices: LOG.info("Drop invalid index %s.", idx) - cur.execute('DROP INDEX "{}"'.format(idx)) + cur.execute(pysql.SQL('DROP INDEX {}').format(pysql.Identifier(idx))) conn.commit() sql = SQLPreprocessor(conn, config) sql.run_sql_file(conn, 'indices.sql', drop=drop) - - -def create_country_names(conn, tokenizer, languages=None): - """ Add default country names to search index. `languages` is a comma- - separated list of language codes as used in OSM. If `languages` is not - empty then only name translations for the given languages are added - to the index. - """ - if languages: - languages = languages.split(',') - - def _include_key(key): - return key == 'name' or \ - (key.startswith('name:') and (not languages or key[5:] in languages)) - - with conn.cursor() as cur: - psycopg2.extras.register_hstore(cur) - cur.execute("""SELECT country_code, name FROM country_name - WHERE country_code is not null""") - - with tokenizer.name_analyzer() as analyzer: - for code, name in cur: - names = {'countrycode': code} - if code == 'gb': - names['short_name'] = 'UK' - if code == 'us': - names['short_name'] = 'United States' - - # country names (only in languages as provided) - if name: - names.update(((k, v) for k, v in name.items() if _include_key(k))) - - analyzer.add_country_names(code, names) - - conn.commit()