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, too-many-branches
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 if args.osm_file is None and args.continue_at is None and not args.prepare_database:
84 raise UsageError("No input files (use --osm-file).")
86 if args.osm_file is not None and args.continue_at not in ('import-from-file', None):
87 raise UsageError(f"Cannot use --continue {args.continue_at} and --osm-file together.")
89 if args.continue_at is not None and args.prepare_database:
91 "Cannot use --continue and --prepare-database together."
96 if args.continue_at in (None, 'import-from-file'):
97 files = args.get_osm_file_list()
98 if not files and not args.prepare_database:
99 raise UsageError("No input files (use --osm-file).")
101 if args.prepare_database or args.continue_at is None:
102 LOG.warning('Creating database')
103 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
104 rouser=args.config.DATABASE_WEBUSER)
105 if args.prepare_database:
108 if args.continue_at in ('import-from-file', None):
109 # Check if the correct plugins are installed
110 database_import.check_existing_database_plugins(args.config.get_libpq_dsn())
111 LOG.warning('Setting up country tables')
112 country_info.setup_country_tables(args.config.get_libpq_dsn(),
113 args.config.lib_dir.data,
116 LOG.warning('Importing OSM data file')
117 database_import.import_osm_data(files,
118 args.osm2pgsql_options(0, 1),
119 drop=args.no_updates,
120 ignore_errors=args.ignore_errors)
122 LOG.warning('Importing wikipedia importance data')
123 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
124 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
126 LOG.error('Wikipedia importance dump file not found. '
127 'Calculating importance values of locations will not '
128 'use Wikipedia importance data.')
130 LOG.warning('Importing secondary importance raster data')
131 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
132 args.project_dir) != 0:
133 LOG.error('Secondary importance file not imported. '
134 'Falling back to default ranking.')
136 self._setup_tables(args.config, args.reverse_only)
138 if args.continue_at in ('import-from-file', 'load-data', None):
139 LOG.warning('Initialise tables')
140 with connect(args.config.get_libpq_dsn()) as conn:
141 database_import.truncate_data_tables(conn)
143 LOG.warning('Load data into placex table')
144 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
146 LOG.warning("Setting up tokenizer")
147 tokenizer = self._get_tokenizer(args.continue_at, args.config)
149 if args.continue_at in ('import-from-file', 'load-data', None):
150 LOG.warning('Calculate postcodes')
151 postcodes.update_postcodes(args.config.get_libpq_dsn(),
152 args.project_dir, tokenizer)
154 if args.continue_at in \
155 ('import-from-file', 'load-data', 'indexing', None):
156 LOG.warning('Indexing places')
157 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
158 indexer.index_full(analyse=not args.index_noanalyse)
160 LOG.warning('Post-process tables')
161 with connect(args.config.get_libpq_dsn()) as conn:
162 database_import.create_search_indices(conn, args.config,
163 drop=args.no_updates,
165 LOG.warning('Create search index for default country names.')
166 country_info.create_country_names(conn, tokenizer,
167 args.config.get_str_list('LANGUAGES'))
169 freeze.drop_update_tables(conn)
170 tokenizer.finalize_import(args.config)
172 LOG.warning('Recompute word counts')
173 tokenizer.update_statistics()
175 webdir = args.project_dir / 'website'
176 LOG.warning('Setup website at %s', webdir)
177 with connect(args.config.get_libpq_dsn()) as conn:
178 refresh.setup_website(webdir, args.config, conn)
180 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
185 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
186 """ Set up the basic database layout: tables, indexes and functions.
188 from ..tools import database_import, refresh
190 with connect(config.get_libpq_dsn()) as conn:
191 LOG.warning('Create functions (1st pass)')
192 refresh.create_functions(conn, config, False, False)
193 LOG.warning('Create tables')
194 database_import.create_tables(conn, config, reverse_only=reverse_only)
195 refresh.load_address_levels_from_config(conn, config)
196 LOG.warning('Create functions (2nd pass)')
197 refresh.create_functions(conn, config, False, False)
198 LOG.warning('Create table triggers')
199 database_import.create_table_triggers(conn, config)
200 LOG.warning('Create partition tables')
201 database_import.create_partition_tables(conn, config)
202 LOG.warning('Create functions (3rd pass)')
203 refresh.create_functions(conn, config, False, False)
206 def _get_tokenizer(self, continue_at: Optional[str],
207 config: Configuration) -> AbstractTokenizer:
208 """ Set up a new tokenizer or load an already initialised one.
210 from ..tokenizer import factory as tokenizer_factory
212 if continue_at in ('import-from-file', 'load-data', None):
213 # (re)initialise the tokenizer data
214 return tokenizer_factory.create_tokenizer(config)
216 # just load the tokenizer
217 return tokenizer_factory.get_tokenizer_for_db(config)
220 def _finalize_database(self, dsn: str, offline: bool) -> None:
221 """ Determine the database date and set the status accordingly.
223 with connect(dsn) as conn:
226 dbdate = status.compute_database_date(conn)
227 status.set_status(conn, dbdate)
228 LOG.info('Database is at %s.', dbdate)
229 except Exception as exc: # pylint: disable=broad-except
230 LOG.error('Cannot determine date of database: %s', exc)
232 properties.set_property(conn, 'database_version', str(NOMINATIM_VERSION))