X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/d14a3df10fe0a2834fd38770179bf0318f5eecfa..a0ed80d821bd3f7938a2e3d4e38357f0c03b919e:/nominatim/tools/database_import.py?ds=sidebyside diff --git a/nominatim/tools/database_import.py b/nominatim/tools/database_import.py index ab8ccdd2..caec9035 100644 --- a/nominatim/tools/database_import.py +++ b/nominatim/tools/database_import.py @@ -1,3 +1,9 @@ +# 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. """ @@ -5,39 +11,38 @@ import logging import os import selectors import subprocess -import shutil from pathlib import Path import psutil -import psycopg2 +from psycopg2 import sql as pysql -from ..db.connection import connect, get_pg_env -from ..db import utils as db_utils -from ..db.async_connection import DBConnection -from .exec_utils import run_osm2pgsql -from ..errors import UsageError -from ..version import POSTGRESQL_REQUIRED_VERSION, POSTGIS_REQUIRED_VERSION +from nominatim.db.connection import connect, get_pg_env +from nominatim.db.async_connection import DBConnection +from nominatim.db.sql_preprocessor import SQLPreprocessor +from nominatim.tools.exec_utils import run_osm2pgsql +from nominatim.errors import UsageError +from nominatim.version import POSTGRESQL_REQUIRED_VERSION, POSTGIS_REQUIRED_VERSION 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, actual, expected): + """ 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, rouser=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 @@ -51,13 +56,9 @@ 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: @@ -68,88 +69,22 @@ def create_db(dsn, rouser=None): "\n createuser %s", rouser, rouser) raise UsageError('Missing read-only user.') - - -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 install_module(src_dir, project_dir, module_dir, conn=None): - """ Copy the normalization module from src_dir into the project - directory under the '/module' directory. If 'module_dir' is set, then - use the module from there instead and check that it is accessible - for Postgresql. - - The function detects when the installation is run from the - build directory. It doesn't touch the module in that case. - - If 'conn' is given, then the function also tests if the module - can be access via the given database. - """ - if not module_dir: - module_dir = project_dir / 'module' - - if not module_dir.exists() or not src_dir.samefile(module_dir): - - if not module_dir.exists(): - module_dir.mkdir() - - destfile = module_dir / 'nominatim.so' - shutil.copy(str(src_dir / 'nominatim.so'), str(destfile)) - destfile.chmod(0o755) - - LOG.info('Database module installed at %s', str(destfile)) - else: - LOG.info('Running from build directory. Leaving database module as is.') - else: - LOG.info("Using custom path for database module at '%s'", module_dir) - - if conn is not None: + # Create extensions. with conn.cursor() as cur: - try: - cur.execute("""CREATE FUNCTION nominatim_test_import_func(text) - RETURNS text AS '{}/nominatim.so', 'transliteration' - LANGUAGE c IMMUTABLE STRICT; - DROP FUNCTION nominatim_test_import_func(text) - """.format(module_dir)) - except psycopg2.DatabaseError as err: - LOG.fatal("Error accessing database module: %s", err) - raise UsageError("Database module cannot be accessed.") from err - - -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') + cur.execute('CREATE EXTENSION IF NOT EXISTS hstore') + cur.execute('CREATE EXTENSION IF NOT EXISTS postgis') + conn.commit() - if ignore_partitions: - with connect(dsn) as conn: - with conn.cursor() as cur: - cur.execute('UPDATE country_name SET partition = 0') - conn.commit() + _require_version('PostGIS', + conn.postgis_version_tuple(), + POSTGIS_REQUIRED_VERSION) -def import_osm_data(osm_file, options, drop=False, ignore_errors=False): - """ Import the given OSM file. 'options' contains the list of +def import_osm_data(osm_files, options, drop=False, ignore_errors=False): + """ Import the given OSM files. 'options' contains the list of default settings for osm2pgsql. """ - options['import_file'] = osm_file + options['import_file'] = osm_files options['append'] = False options['threads'] = 1 @@ -157,7 +92,12 @@ def import_osm_data(osm_file, options, drop=False, ignore_errors=False): # Make some educated guesses about cache size based on the size # of the import file and the available memory. mem = psutil.virtual_memory() - fsize = os.stat(str(osm_file)).st_size + fsize = 0 + if isinstance(osm_files, list): + for fname in osm_files: + fsize += os.stat(str(fname)).st_size + else: + fsize = os.stat(str(osm_files)).st_size options['osm2pgsql_cache'] = int(min((mem.available + mem.cached) * 0.75, fsize * 2) / 1024 / 1024) + 1 @@ -173,21 +113,44 @@ def import_osm_data(osm_file, options, drop=False, ignore_errors=False): if drop: conn.drop_table('planet_osm_nodes') - if drop: - if options['flatnode_file']: - Path(options['flatnode_file']).unlink() + if drop and options['flatnode_file']: + Path(options['flatnode_file']).unlink() + + +def create_tables(conn, config, reverse_only=False): + """ 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. + """ + sql = SQLPreprocessor(conn, config) + sql.env.globals['db']['reverse_only'] = reverse_only + + sql.run_sql_file(conn, 'tables.sql') + + +def create_table_triggers(conn, config): + """ Create the triggers for the tables. The trigger functions must already + have been imported with refresh.create_functions(). + """ + sql = SQLPreprocessor(conn, config) + sql.run_sql_file(conn, 'table-triggers.sql') + + +def create_partition_tables(conn, config): + """ Create tables that have explicit partitioning. + """ + sql = SQLPreprocessor(conn, config) + sql.run_sql_file(conn, 'partition-tables.src.sql') -def truncate_data_tables(conn, max_word_frequency=None): +def truncate_data_tables(conn): """ Truncate all data tables to prepare for a fresh load. """ with conn.cursor() as cur: - cur.execute('TRUNCATE word') cur.execute('TRUNCATE placex') cur.execute('TRUNCATE place_addressline') cur.execute('TRUNCATE location_area') cur.execute('TRUNCATE location_area_country') - cur.execute('TRUNCATE location_property') cur.execute('TRUNCATE location_property_tiger') cur.execute('TRUNCATE location_property_osmline') cur.execute('TRUNCATE location_postcode') @@ -202,35 +165,33 @@ def truncate_data_tables(conn, max_word_frequency=None): for table in [r[0] for r in list(cur)]: cur.execute('TRUNCATE ' + table) - if max_word_frequency is not None: - # Used by getorcreate_word_id to ignore frequent partial words. - cur.execute("""CREATE OR REPLACE FUNCTION get_maxwordfreq() - RETURNS integer AS $$ - SELECT {} as maxwordfreq; - $$ LANGUAGE SQL IMMUTABLE - """.format(max_word_frequency)) - conn.commit() + conn.commit() + + +_COPY_COLUMNS = pysql.SQL(',').join(map(pysql.Identifier, + ('osm_type', 'osm_id', 'class', 'type', + 'name', 'admin_level', 'address', + 'extratags', 'geometry'))) -_COPY_COLUMNS = 'osm_type, osm_id, class, type, name, admin_level, address, extratags, geometry' -def load_data(dsn, data_dir, threads): +def load_data(dsn, threads): """ Copy data into the word and placex table. """ - # Pre-calculate the most important terms in the word list. - db_utils.execute_file(dsn, data_dir / 'words.sql') - sel = selectors.DefaultSelector() # Then copy data from place to placex in chunks. place_threads = max(1, threads - 1) for imod in range(place_threads): conn = DBConnection(dsn) conn.connect() - conn.perform("""INSERT INTO placex ({0}) - SELECT {0} FROM place - WHERE osm_id % {1} = {2} - AND NOT (class='place' and type='houses') - AND ST_IsValid(geometry) - """.format(_COPY_COLUMNS, place_threads, imod)) + conn.perform( + pysql.SQL("""INSERT INTO placex ({columns}) + SELECT {columns} FROM place + WHERE osm_id % {total} = {mod} + AND NOT (class='place' and (type='houses' or type='postcode')) + AND ST_IsValid(geometry) + """).format(columns=_COPY_COLUMNS, + total=pysql.Literal(place_threads), + mod=pysql.Literal(imod))) sel.register(conn, selectors.EVENT_READ, conn) # Address interpolations go into another table. @@ -258,3 +219,24 @@ def load_data(dsn, data_dir, threads): with connect(dsn) as conn: with conn.cursor() as cur: cur.execute('ANALYSE') + + +def create_search_indices(conn, config, drop=False): + """ Create tables that have explicit partitioning. + """ + + # If index creation failed and left an index invalid, they need to be + # cleaned out first, so that the script recreates them. + with conn.cursor() as cur: + cur.execute("""SELECT relname FROM pg_class, pg_index + WHERE pg_index.indisvalid = false + AND pg_index.indexrelid = pg_class.oid""") + 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)) + conn.commit() + + sql = SQLPreprocessor(conn, config) + + sql.run_sql_file(conn, 'indices.sql', drop=drop)