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('--osm-views', action='store_true',
62 help='Import OSM views GeoTIFF')
63 group2.add_argument('--offline', action='store_true',
64 help="Do not attempt to load any additional data from the internet")
65 group3 = parser.add_argument_group('Expert options')
66 group3.add_argument('--ignore-errors', action='store_true',
67 help='Continue import even when errors in SQL are present')
68 group3.add_argument('--index-noanalyse', action='store_true',
69 help='Do not perform analyse operations during index (expert only)')
72 def run(self, args: NominatimArgs) -> int: # pylint: disable=too-many-statements
73 from ..data import country_info
74 from ..tools import database_import, refresh, postcodes, freeze
75 from ..indexer.indexer import Indexer
77 num_threads = args.threads or psutil.cpu_count() or 1
79 country_info.setup_country_config(args.config)
81 if args.continue_at is None:
82 files = args.get_osm_file_list()
84 raise UsageError("No input files (use --osm-file).")
86 LOG.warning('Creating database')
87 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
88 rouser=args.config.DATABASE_WEBUSER)
90 LOG.warning('Setting up country tables')
91 country_info.setup_country_tables(args.config.get_libpq_dsn(),
95 LOG.warning('Importing OSM data file')
96 database_import.import_osm_data(files,
97 args.osm2pgsql_options(0, 1),
99 ignore_errors=args.ignore_errors)
101 self._setup_tables(args.config, args.reverse_only)
103 LOG.warning('Importing wikipedia importance data')
104 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
105 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
107 LOG.error('Wikipedia importance dump file not found. '
108 'Calculating importance values of locations will not '
109 'use Wikipedia importance data.')
111 LOG.warning('Importing OSM views GeoTIFF data')
112 data_path = Path(args.project_dir)
113 num = refresh.import_osm_views_geotiff(args.config.get_libpq_dsn(), data_path)
115 LOG.error('OSM views GeoTIFF file not found. '
116 'Calculating importance values of locations will not use OSM views data.')
118 LOG.error('PostGIS version number is less than 3. '
119 'Calculating importance values of locations will not use OSM views data.')
121 if args.continue_at is None or args.continue_at == 'load-data':
122 LOG.warning('Initialise tables')
123 with connect(args.config.get_libpq_dsn()) as conn:
124 database_import.truncate_data_tables(conn)
126 LOG.warning('Load data into placex table')
127 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
129 LOG.warning("Setting up tokenizer")
130 tokenizer = self._get_tokenizer(args.continue_at, args.config)
132 if args.continue_at is None or args.continue_at == 'load-data':
133 LOG.warning('Calculate postcodes')
134 postcodes.update_postcodes(args.config.get_libpq_dsn(),
135 args.project_dir, tokenizer)
137 if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
138 LOG.warning('Indexing places')
139 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
140 indexer.index_full(analyse=not args.index_noanalyse)
142 LOG.warning('Post-process tables')
143 with connect(args.config.get_libpq_dsn()) as conn:
144 database_import.create_search_indices(conn, args.config,
145 drop=args.no_updates,
147 LOG.warning('Create search index for default country names.')
148 country_info.create_country_names(conn, tokenizer,
149 args.config.get_str_list('LANGUAGES'))
151 freeze.drop_update_tables(conn)
152 tokenizer.finalize_import(args.config)
154 LOG.warning('Recompute word counts')
155 tokenizer.update_statistics()
157 webdir = args.project_dir / 'website'
158 LOG.warning('Setup website at %s', webdir)
159 with connect(args.config.get_libpq_dsn()) as conn:
160 refresh.setup_website(webdir, args.config, conn)
162 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
167 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
168 """ Set up the basic database layout: tables, indexes and functions.
170 from ..tools import database_import, refresh
172 with connect(config.get_libpq_dsn()) as conn:
173 LOG.warning('Create functions (1st pass)')
174 refresh.create_functions(conn, config, False, False)
175 LOG.warning('Create tables')
176 database_import.create_tables(conn, config, reverse_only=reverse_only)
177 refresh.load_address_levels_from_config(conn, config)
178 LOG.warning('Create functions (2nd pass)')
179 refresh.create_functions(conn, config, False, False)
180 LOG.warning('Create table triggers')
181 database_import.create_table_triggers(conn, config)
182 LOG.warning('Create partition tables')
183 database_import.create_partition_tables(conn, config)
184 LOG.warning('Create functions (3rd pass)')
185 refresh.create_functions(conn, config, False, False)
188 def _get_tokenizer(self, continue_at: Optional[str],
189 config: Configuration) -> AbstractTokenizer:
190 """ Set up a new tokenizer or load an already initialised one.
192 from ..tokenizer import factory as tokenizer_factory
194 if continue_at is None or continue_at == 'load-data':
195 # (re)initialise the tokenizer data
196 return tokenizer_factory.create_tokenizer(config)
198 # just load the tokenizer
199 return tokenizer_factory.get_tokenizer_for_db(config)
202 def _finalize_database(self, dsn: str, offline: bool) -> None:
203 """ Determine the database date and set the status accordingly.
205 with connect(dsn) as conn:
208 dbdate = status.compute_database_date(conn)
209 status.set_status(conn, dbdate)
210 LOG.info('Database is at %s.', dbdate)
211 except Exception as exc: # pylint: disable=broad-except
212 LOG.error('Cannot determine date of database: %s', exc)
214 properties.set_property(conn, 'database_version', version_str())