""" Implementation of the 'import' subcommand. """ import logging from pathlib import Path import psutil from nominatim.db.connection import connect from nominatim.db import status, properties from nominatim.version import NOMINATIM_VERSION # Do not repeat documentation of subcommand classes. # pylint: disable=C0111 # Using non-top-level imports to avoid eventually unused imports. # pylint: disable=E0012,C0415 LOG = logging.getLogger() class SetupAll: """\ Create a new Nominatim database from an OSM file. This sub-command sets up a new Nominatim database from scratch starting with creating a new database in Postgresql. The user running this command needs superuser rights on the database. """ @staticmethod def add_args(parser): group_name = parser.add_argument_group('Required arguments') group = group_name.add_mutually_exclusive_group(required=True) group.add_argument('--osm-file', metavar='FILE', action='append', help='OSM file to be imported' ' (repeat for importing multiple files)') group.add_argument('--continue', dest='continue_at', choices=['load-data', 'indexing', 'db-postprocess'], help='Continue an import that was interrupted') group = parser.add_argument_group('Optional arguments') group.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int, help='Size of cache to be used by osm2pgsql (in MB)') group.add_argument('--reverse-only', action='store_true', help='Do not create tables and indexes for searching') group.add_argument('--no-partitions', action='store_true', help=("Do not partition search indices " "(speeds up import of single country extracts)")) group.add_argument('--no-updates', action='store_true', help="Do not keep tables that are only needed for " "updating the database later") group = parser.add_argument_group('Expert options') group.add_argument('--ignore-errors', action='store_true', help='Continue import even when errors in SQL are present') group.add_argument('--index-noanalyse', action='store_true', help='Do not perform analyse operations during index (expert only)') @staticmethod def run(args): from ..tools import database_import, refresh, postcodes, freeze, country_info from ..indexer.indexer import Indexer country_info.setup_country_config(args.config) if args.continue_at is None: files = args.get_osm_file_list() LOG.warning('Creating database') database_import.setup_database_skeleton(args.config.get_libpq_dsn(), rouser=args.config.DATABASE_WEBUSER) LOG.warning('Setting up country tables') country_info.setup_country_tables(args.config.get_libpq_dsn(), args.data_dir, args.no_partitions) LOG.warning('Importing OSM data file') database_import.import_osm_data(files, args.osm2pgsql_options(0, 1), drop=args.no_updates, ignore_errors=args.ignore_errors) SetupAll._setup_tables(args.config, args.reverse_only) LOG.warning('Importing wikipedia importance data') data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir) if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(), data_path) > 0: LOG.error('Wikipedia importance dump file not found. ' 'Will be using default importances.') if args.continue_at is None or args.continue_at == 'load-data': LOG.warning('Initialise tables') with connect(args.config.get_libpq_dsn()) as conn: database_import.truncate_data_tables(conn) LOG.warning('Load data into placex table') database_import.load_data(args.config.get_libpq_dsn(), args.threads or psutil.cpu_count() or 1) LOG.warning("Setting up tokenizer") tokenizer = SetupAll._get_tokenizer(args.continue_at, args.config) if args.continue_at is None or args.continue_at == 'load-data': LOG.warning('Calculate postcodes') postcodes.update_postcodes(args.config.get_libpq_dsn(), args.project_dir, tokenizer) if args.continue_at is None or args.continue_at in ('load-data', 'indexing'): if args.continue_at is not None and args.continue_at != 'load-data': with connect(args.config.get_libpq_dsn()) as conn: SetupAll._create_pending_index(conn, args.config.TABLESPACE_ADDRESS_INDEX) LOG.warning('Indexing places') indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, args.threads or psutil.cpu_count() or 1) indexer.index_full(analyse=not args.index_noanalyse) LOG.warning('Post-process tables') with connect(args.config.get_libpq_dsn()) as conn: database_import.create_search_indices(conn, args.config, drop=args.no_updates) LOG.warning('Create search index for default country names.') country_info.create_country_names(conn, tokenizer, args.config.LANGUAGES) if args.no_updates: freeze.drop_update_tables(conn) tokenizer.finalize_import(args.config) webdir = args.project_dir / 'website' LOG.warning('Setup website at %s', webdir) with connect(args.config.get_libpq_dsn()) as conn: refresh.setup_website(webdir, args.config, conn) with connect(args.config.get_libpq_dsn()) as conn: SetupAll._set_database_date(conn) properties.set_property(conn, 'database_version', '{0[0]}.{0[1]}.{0[2]}-{0[3]}'.format(NOMINATIM_VERSION)) return 0 @staticmethod def _setup_tables(config, reverse_only): """ Set up the basic database layout: tables, indexes and functions. """ from ..tools import database_import, refresh with connect(config.get_libpq_dsn()) as conn: LOG.warning('Create functions (1st pass)') refresh.create_functions(conn, config, False, False) LOG.warning('Create tables') database_import.create_tables(conn, config, reverse_only=reverse_only) refresh.load_address_levels_from_config(conn, config) LOG.warning('Create functions (2nd pass)') refresh.create_functions(conn, config, False, False) LOG.warning('Create table triggers') database_import.create_table_triggers(conn, config) LOG.warning('Create partition tables') database_import.create_partition_tables(conn, config) LOG.warning('Create functions (3rd pass)') refresh.create_functions(conn, config, False, False) @staticmethod def _get_tokenizer(continue_at, config): """ Set up a new tokenizer or load an already initialised one. """ from ..tokenizer import factory as tokenizer_factory if continue_at is None or continue_at == 'load-data': # (re)initialise the tokenizer data return tokenizer_factory.create_tokenizer(config) # just load the tokenizer return tokenizer_factory.get_tokenizer_for_db(config) @staticmethod def _create_pending_index(conn, tablespace): """ Add a supporting index for finding places still to be indexed. This index is normally created at the end of the import process for later updates. When indexing was partially done, then this index can greatly improve speed going through already indexed data. """ if conn.index_exists('idx_placex_pendingsector'): return with conn.cursor() as cur: LOG.warning('Creating support index') if tablespace: tablespace = 'TABLESPACE ' + tablespace cur.execute("""CREATE INDEX idx_placex_pendingsector ON placex USING BTREE (rank_address,geometry_sector) {} WHERE indexed_status > 0 """.format(tablespace)) conn.commit() @staticmethod def _set_database_date(conn): """ Determine the database date and set the status accordingly. """ try: dbdate = status.compute_database_date(conn) status.set_status(conn, dbdate) LOG.info('Database is at %s.', dbdate) except Exception as exc: # pylint: disable=broad-except LOG.error('Cannot determine date of database: %s', exc)