1 # SPDX-License-Identifier: GPL-2.0-only
3 # This file is part of Nominatim. (https://nominatim.org)
5 # Copyright (C) 2022 by the Nominatim developer community.
6 # For a full list of authors see the git log.
8 Implementation of the 'import' subcommand.
10 from typing import Optional
13 from pathlib import Path
17 from nominatim.config import Configuration
18 from nominatim.db.connection import connect
19 from nominatim.db import status, properties
20 from nominatim.tokenizer.base import AbstractTokenizer
21 from nominatim.version import version_str
22 from nominatim.clicmd.args import NominatimArgs
23 from nominatim.errors import UsageError
25 # Do not repeat documentation of subcommand classes.
26 # pylint: disable=C0111
27 # Using non-top-level imports to avoid eventually unused imports.
28 # pylint: disable=C0415
30 LOG = logging.getLogger()
34 Create a new Nominatim database from an OSM file.
36 This sub-command sets up a new Nominatim database from scratch starting
37 with creating a new database in Postgresql. The user running this command
38 needs superuser rights on the database.
41 def add_args(self, parser: argparse.ArgumentParser) -> None:
42 group_name = parser.add_argument_group('Required arguments')
43 group1 = group_name.add_mutually_exclusive_group(required=True)
44 group1.add_argument('--osm-file', metavar='FILE', action='append',
45 help='OSM file to be imported'
46 ' (repeat for importing multiple files)')
47 group1.add_argument('--continue', dest='continue_at',
48 choices=['load-data', 'indexing', 'db-postprocess'],
49 help='Continue an import that was interrupted')
50 group2 = parser.add_argument_group('Optional arguments')
51 group2.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
52 help='Size of cache to be used by osm2pgsql (in MB)')
53 group2.add_argument('--reverse-only', action='store_true',
54 help='Do not create tables and indexes for searching')
55 group2.add_argument('--no-partitions', action='store_true',
56 help=("Do not partition search indices "
57 "(speeds up import of single country extracts)"))
58 group2.add_argument('--no-updates', action='store_true',
59 help="Do not keep tables that are only needed for "
60 "updating the database later")
61 group2.add_argument('--offline', action='store_true',
62 help="Do not attempt to load any additional data from the internet")
63 group3 = parser.add_argument_group('Expert options')
64 group3.add_argument('--ignore-errors', action='store_true',
65 help='Continue import even when errors in SQL are present')
66 group3.add_argument('--index-noanalyse', action='store_true',
67 help='Do not perform analyse operations during index (expert only)')
70 def run(self, args: NominatimArgs) -> int: # pylint: disable=too-many-statements
71 from ..data import country_info
72 from ..tools import database_import, refresh, postcodes, freeze
73 from ..indexer.indexer import Indexer
75 num_threads = args.threads or psutil.cpu_count() or 1
77 country_info.setup_country_config(args.config)
79 if args.continue_at is None:
80 files = args.get_osm_file_list()
82 raise UsageError("No input files (use --osm-file).")
84 LOG.warning('Creating database')
85 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
86 rouser=args.config.DATABASE_WEBUSER)
88 LOG.warning('Setting up country tables')
89 country_info.setup_country_tables(args.config.get_libpq_dsn(),
90 args.config.lib_dir.data,
93 LOG.warning('Importing OSM data file')
94 database_import.import_osm_data(files,
95 args.osm2pgsql_options(0, 1),
97 ignore_errors=args.ignore_errors)
99 LOG.warning('Importing wikipedia importance data')
100 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
101 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
103 LOG.error('Wikipedia importance dump file not found. '
104 'Calculating importance values of locations will not '
105 'use Wikipedia importance data.')
107 LOG.warning('Importing secondary importance raster data')
108 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
109 args.project_dir) != 0:
110 LOG.error('Secondary importance file not imported. '
111 'Falling back to default ranking.')
113 self._setup_tables(args.config, args.reverse_only)
115 if args.continue_at is None or args.continue_at == 'load-data':
116 LOG.warning('Initialise tables')
117 with connect(args.config.get_libpq_dsn()) as conn:
118 database_import.truncate_data_tables(conn)
120 LOG.warning('Load data into placex table')
121 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
123 LOG.warning("Setting up tokenizer")
124 tokenizer = self._get_tokenizer(args.continue_at, args.config)
126 if args.continue_at is None or args.continue_at == 'load-data':
127 LOG.warning('Calculate postcodes')
128 postcodes.update_postcodes(args.config.get_libpq_dsn(),
129 args.project_dir, tokenizer)
131 if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
132 LOG.warning('Indexing places')
133 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
134 indexer.index_full(analyse=not args.index_noanalyse)
136 LOG.warning('Post-process tables')
137 with connect(args.config.get_libpq_dsn()) as conn:
138 database_import.create_search_indices(conn, args.config,
139 drop=args.no_updates,
141 LOG.warning('Create search index for default country names.')
142 country_info.create_country_names(conn, tokenizer,
143 args.config.get_str_list('LANGUAGES'))
145 freeze.drop_update_tables(conn)
146 tokenizer.finalize_import(args.config)
148 LOG.warning('Recompute word counts')
149 tokenizer.update_statistics()
151 webdir = args.project_dir / 'website'
152 LOG.warning('Setup website at %s', webdir)
153 with connect(args.config.get_libpq_dsn()) as conn:
154 refresh.setup_website(webdir, args.config, conn)
156 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
161 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
162 """ Set up the basic database layout: tables, indexes and functions.
164 from ..tools import database_import, refresh
166 with connect(config.get_libpq_dsn()) as conn:
167 LOG.warning('Create functions (1st pass)')
168 refresh.create_functions(conn, config, False, False)
169 LOG.warning('Create tables')
170 database_import.create_tables(conn, config, reverse_only=reverse_only)
171 refresh.load_address_levels_from_config(conn, config)
172 LOG.warning('Create functions (2nd pass)')
173 refresh.create_functions(conn, config, False, False)
174 LOG.warning('Create table triggers')
175 database_import.create_table_triggers(conn, config)
176 LOG.warning('Create partition tables')
177 database_import.create_partition_tables(conn, config)
178 LOG.warning('Create functions (3rd pass)')
179 refresh.create_functions(conn, config, False, False)
182 def _get_tokenizer(self, continue_at: Optional[str],
183 config: Configuration) -> AbstractTokenizer:
184 """ Set up a new tokenizer or load an already initialised one.
186 from ..tokenizer import factory as tokenizer_factory
188 if continue_at is None or continue_at == 'load-data':
189 # (re)initialise the tokenizer data
190 return tokenizer_factory.create_tokenizer(config)
192 # just load the tokenizer
193 return tokenizer_factory.get_tokenizer_for_db(config)
196 def _finalize_database(self, dsn: str, offline: bool) -> None:
197 """ Determine the database date and set the status accordingly.
199 with connect(dsn) as conn:
202 dbdate = status.compute_database_date(conn)
203 status.set_status(conn, dbdate)
204 LOG.info('Database is at %s.', dbdate)
205 except Exception as exc: # pylint: disable=broad-except
206 LOG.error('Cannot determine date of database: %s', exc)
208 properties.set_property(conn, 'database_version', version_str())