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 NOMINATIM_VERSION
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_argument_group()
44 group1.add_argument('--osm-file', metavar='FILE', action='append',
45 help='OSM file to be imported'
46 ' (repeat for importing multiple files)',
48 group1.add_argument('--continue', dest='continue_at',
49 choices=['import-from-file', 'load-data', 'indexing', 'db-postprocess'],
50 help='Continue an import that was interrupted',
52 group2 = parser.add_argument_group('Optional arguments')
53 group2.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
54 help='Size of cache to be used by osm2pgsql (in MB)')
55 group2.add_argument('--reverse-only', action='store_true',
56 help='Do not create tables and indexes for searching')
57 group2.add_argument('--no-partitions', action='store_true',
58 help=("Do not partition search indices "
59 "(speeds up import of single country extracts)"))
60 group2.add_argument('--no-updates', action='store_true',
61 help="Do not keep tables that are only needed for "
62 "updating the database later")
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)')
70 group3.add_argument('--prepare-database', action='store_true',
71 help='Create the database but do not import any data')
74 def run(self, args: NominatimArgs) -> int: # pylint: disable=too-many-statements
75 from ..data import country_info
76 from ..tools import database_import, refresh, postcodes, freeze
77 from ..indexer.indexer import Indexer
79 num_threads = args.threads or psutil.cpu_count() or 1
81 country_info.setup_country_config(args.config)
83 # Check if osm-file or continue_at is set, if both are set, or none are set, throw an error
84 if args.osm_file is None and args.continue_at is None:
85 raise UsageError("No input files (use --osm-file).")
87 if args.osm_file is not None and args.continue_at not in ('import-from-file', None):
88 raise UsageError(f"Cannot use --continue {args.continue_at} and --osm-file together.")
90 if args.continue_at is not None and args.prepare_database:
92 "Cannot use --continue and --prepare-database together."
97 if args.continue_at in (None, 'import-from-file'):
98 files = args.get_osm_file_list()
99 if not files and not args.prepare_database:
100 raise UsageError("No input files (use --osm-file).")
102 if args.prepare_database:
103 LOG.warning('Creating database')
104 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
105 rouser=args.config.DATABASE_WEBUSER)
108 if not args.prepare_database or \
109 args.continue_at == 'import-from-file':
110 # Check if the correct plugins are installed
111 database_import.check_existing_database_plugins(args.config.get_libpq_dsn())
112 LOG.warning('Setting up country tables')
113 country_info.setup_country_tables(args.config.get_libpq_dsn(),
114 args.config.lib_dir.data,
117 LOG.warning('Importing OSM data file')
118 database_import.import_osm_data(files,
119 args.osm2pgsql_options(0, 1),
120 drop=args.no_updates,
121 ignore_errors=args.ignore_errors)
123 LOG.warning('Importing wikipedia importance data')
124 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
125 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
127 LOG.error('Wikipedia importance dump file not found. '
128 'Calculating importance values of locations will not '
129 'use Wikipedia importance data.')
131 LOG.warning('Importing secondary importance raster data')
132 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
133 args.project_dir) != 0:
134 LOG.error('Secondary importance file not imported. '
135 'Falling back to default ranking.')
137 self._setup_tables(args.config, args.reverse_only)
139 if args.continue_at in ('import-from-file', 'load-data', None):
140 LOG.warning('Initialise tables')
141 with connect(args.config.get_libpq_dsn()) as conn:
142 database_import.truncate_data_tables(conn)
144 LOG.warning('Load data into placex table')
145 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
147 LOG.warning("Setting up tokenizer")
148 tokenizer = self._get_tokenizer(args.continue_at, args.config)
150 if args.continue_at in ('import-from-file', 'load-data', None):
151 LOG.warning('Calculate postcodes')
152 postcodes.update_postcodes(args.config.get_libpq_dsn(),
153 args.project_dir, tokenizer)
155 if args.continue_at in \
156 ('import-from-file', 'load-data', 'indexing', None):
157 LOG.warning('Indexing places')
158 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
159 indexer.index_full(analyse=not args.index_noanalyse)
161 LOG.warning('Post-process tables')
162 with connect(args.config.get_libpq_dsn()) as conn:
163 database_import.create_search_indices(conn, args.config,
164 drop=args.no_updates,
166 LOG.warning('Create search index for default country names.')
167 country_info.create_country_names(conn, tokenizer,
168 args.config.get_str_list('LANGUAGES'))
170 freeze.drop_update_tables(conn)
171 tokenizer.finalize_import(args.config)
173 LOG.warning('Recompute word counts')
174 tokenizer.update_statistics()
176 webdir = args.project_dir / 'website'
177 LOG.warning('Setup website at %s', webdir)
178 with connect(args.config.get_libpq_dsn()) as conn:
179 refresh.setup_website(webdir, args.config, conn)
181 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
186 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
187 """ Set up the basic database layout: tables, indexes and functions.
189 from ..tools import database_import, refresh
191 with connect(config.get_libpq_dsn()) as conn:
192 LOG.warning('Create functions (1st pass)')
193 refresh.create_functions(conn, config, False, False)
194 LOG.warning('Create tables')
195 database_import.create_tables(conn, config, reverse_only=reverse_only)
196 refresh.load_address_levels_from_config(conn, config)
197 LOG.warning('Create functions (2nd pass)')
198 refresh.create_functions(conn, config, False, False)
199 LOG.warning('Create table triggers')
200 database_import.create_table_triggers(conn, config)
201 LOG.warning('Create partition tables')
202 database_import.create_partition_tables(conn, config)
203 LOG.warning('Create functions (3rd pass)')
204 refresh.create_functions(conn, config, False, False)
207 def _get_tokenizer(self, continue_at: Optional[str],
208 config: Configuration) -> AbstractTokenizer:
209 """ Set up a new tokenizer or load an already initialised one.
211 from ..tokenizer import factory as tokenizer_factory
213 if continue_at is None or continue_at == 'load-data':
214 # (re)initialise the tokenizer data
215 return tokenizer_factory.create_tokenizer(config)
217 # just load the tokenizer
218 return tokenizer_factory.get_tokenizer_for_db(config)
221 def _finalize_database(self, dsn: str, offline: bool) -> None:
222 """ Determine the database date and set the status accordingly.
224 with connect(dsn) as conn:
227 dbdate = status.compute_database_date(conn)
228 status.set_status(conn, dbdate)
229 LOG.info('Database is at %s.', dbdate)
230 except Exception as exc: # pylint: disable=broad-except
231 LOG.error('Cannot determine date of database: %s', exc)
233 properties.set_property(conn, 'database_version', str(NOMINATIM_VERSION))