1 # SPDX-License-Identifier: GPL-3.0-or-later
3 # This file is part of Nominatim. (https://nominatim.org)
5 # Copyright (C) 2024 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
18 from ..errors import UsageError
19 from ..config import Configuration
20 from ..db.connection import connect
21 from ..db import status, properties
22 from ..tokenizer.base import AbstractTokenizer
23 from ..version import NOMINATIM_VERSION
24 from .args import NominatimArgs
27 LOG = logging.getLogger()
32 Create a new Nominatim database from an OSM file.
34 This sub-command sets up a new Nominatim database from scratch starting
35 with creating a new database in Postgresql. The user running this command
36 needs superuser rights on the database.
39 def add_args(self, parser: argparse.ArgumentParser) -> None:
40 group1 = parser.add_argument_group('Required arguments')
41 group1.add_argument('--osm-file', metavar='FILE', action='append',
42 help='OSM file to be imported'
43 ' (repeat for importing multiple files)',
45 group1.add_argument('--continue', dest='continue_at',
46 choices=['import-from-file', 'load-data', 'indexing', 'db-postprocess'],
47 help='Continue an import that was interrupted',
49 group2 = parser.add_argument_group('Optional arguments')
50 group2.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
51 help='Size of cache to be used by osm2pgsql (in MB)')
52 group2.add_argument('--reverse-only', action='store_true',
53 help='Do not create tables and indexes for searching')
54 group2.add_argument('--no-partitions', action='store_true',
55 help="Do not partition search indices "
56 "(speeds up import of single country extracts)")
57 group2.add_argument('--no-updates', action='store_true',
58 help="Do not keep tables that are only needed for "
59 "updating the database later")
60 group2.add_argument('--offline', action='store_true',
61 help="Do not attempt to load any additional data from the internet")
62 group3 = parser.add_argument_group('Expert options')
63 group3.add_argument('--ignore-errors', action='store_true',
64 help='Continue import even when errors in SQL are present')
65 group3.add_argument('--index-noanalyse', action='store_true',
66 help='Do not perform analyse operations during index (expert only)')
67 group3.add_argument('--prepare-database', action='store_true',
68 help='Create the database but do not import any data')
70 def run(self, args: NominatimArgs) -> int:
71 if args.osm_file is None and args.continue_at is None and not args.prepare_database:
72 raise UsageError("No input files (use --osm-file).")
74 if args.osm_file is not None and args.continue_at not in ('import-from-file', None):
75 raise UsageError(f"Cannot use --continue {args.continue_at} and --osm-file together.")
77 if args.continue_at is not None and args.prepare_database:
79 "Cannot use --continue and --prepare-database together."
82 return asyncio.run(self.async_run(args))
84 async def async_run(self, args: NominatimArgs) -> int:
85 from ..data import country_info
86 from ..tools import database_import, postcodes, freeze
87 from ..indexer.indexer import Indexer
89 num_threads = args.threads or psutil.cpu_count() or 1
90 country_info.setup_country_config(args.config)
92 if args.prepare_database or args.continue_at is None:
93 LOG.warning('Creating database')
94 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
95 rouser=args.config.DATABASE_WEBUSER)
96 if args.prepare_database:
99 if args.continue_at in (None, 'import-from-file'):
100 self._base_import(args)
102 if args.continue_at in ('import-from-file', 'load-data', None):
103 LOG.warning('Initialise tables')
104 with connect(args.config.get_libpq_dsn()) as conn:
105 database_import.truncate_data_tables(conn)
107 LOG.warning('Load data into placex table')
108 await database_import.load_data(args.config.get_libpq_dsn(), num_threads)
110 LOG.warning("Setting up tokenizer")
111 tokenizer = self._get_tokenizer(args.continue_at, args.config)
113 if args.continue_at in ('import-from-file', 'load-data', None):
114 LOG.warning('Calculate postcodes')
115 postcodes.update_postcodes(args.config.get_libpq_dsn(),
116 args.project_dir, tokenizer)
118 if args.continue_at in ('import-from-file', 'load-data', 'indexing', None):
119 LOG.warning('Indexing places')
120 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
121 await indexer.index_full(analyse=not args.index_noanalyse)
123 LOG.warning('Post-process tables')
124 with connect(args.config.get_libpq_dsn()) as conn:
125 conn.autocommit = True
126 await database_import.create_search_indices(conn, args.config,
127 drop=args.no_updates,
129 LOG.warning('Create search index for default country names.')
130 conn.autocommit = False
131 country_info.create_country_names(conn, tokenizer,
132 args.config.get_str_list('LANGUAGES'))
134 conn.autocommit = True
135 freeze.drop_update_tables(conn)
136 tokenizer.finalize_import(args.config)
138 LOG.warning('Recompute word counts')
139 tokenizer.update_statistics(args.config, threads=num_threads)
141 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
145 def _base_import(self, args: NominatimArgs) -> None:
146 from ..tools import database_import, refresh
147 from ..data import country_info
149 files = args.get_osm_file_list()
151 raise UsageError("No input files (use --osm-file).")
153 if args.continue_at in ('import-from-file', None):
154 # Check if the correct plugins are installed
155 database_import.check_existing_database_plugins(args.config.get_libpq_dsn())
156 LOG.warning('Setting up country tables')
157 country_info.setup_country_tables(args.config.get_libpq_dsn(),
158 args.config.lib_dir.data,
161 LOG.warning('Importing OSM data file')
162 database_import.import_osm_data(files,
163 args.osm2pgsql_options(0, 1),
164 drop=args.no_updates,
165 ignore_errors=args.ignore_errors)
167 LOG.warning('Importing wikipedia importance data')
168 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
169 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
171 LOG.error('Wikipedia importance dump file not found. '
172 'Calculating importance values of locations will not '
173 'use Wikipedia importance data.')
175 LOG.warning('Importing secondary importance raster data')
176 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
177 args.project_dir) != 0:
178 LOG.error('Secondary importance file not imported. '
179 'Falling back to default ranking.')
181 self._setup_tables(args.config, args.reverse_only)
183 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
184 """ Set up the basic database layout: tables, indexes and functions.
186 from ..tools import database_import, refresh
188 with connect(config.get_libpq_dsn()) as conn:
189 conn.autocommit = True
190 LOG.warning('Create functions (1st pass)')
191 refresh.create_functions(conn, config, False, False)
192 LOG.warning('Create tables')
193 database_import.create_tables(conn, config, reverse_only=reverse_only)
194 refresh.load_address_levels_from_config(conn, config)
195 LOG.warning('Create functions (2nd pass)')
196 refresh.create_functions(conn, config, False, False)
197 LOG.warning('Create table triggers')
198 database_import.create_table_triggers(conn, config)
199 LOG.warning('Create partition tables')
200 database_import.create_partition_tables(conn, config)
201 LOG.warning('Create functions (3rd pass)')
202 refresh.create_functions(conn, config, False, False)
204 def _get_tokenizer(self, continue_at: Optional[str],
205 config: Configuration) -> AbstractTokenizer:
206 """ Set up a new tokenizer or load an already initialised one.
208 from ..tokenizer import factory as tokenizer_factory
210 if continue_at in ('import-from-file', 'load-data', None):
211 # (re)initialise the tokenizer data
212 return tokenizer_factory.create_tokenizer(config)
214 # just load the tokenizer
215 return tokenizer_factory.get_tokenizer_for_db(config)
217 def _finalize_database(self, dsn: str, offline: bool) -> None:
218 """ Determine the database date and set the status accordingly.
220 with connect(dsn) as conn:
221 properties.set_property(conn, 'database_version', str(NOMINATIM_VERSION))
224 dbdate = status.compute_database_date(conn, offline)
225 status.set_status(conn, dbdate)
226 LOG.info('Database is at %s.', dbdate)
227 except Exception as exc:
228 LOG.error('Cannot determine date of database: %s', exc)