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_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)')
68 group3.add_argument('--only-import-data', action='store_true',
69 help='Do not attempt to create the database')
70 group3.add_argument('--only-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 if args.continue_at is None:
84 files = args.get_osm_file_list()
85 if not files and not args.only_prepare_database:
86 raise UsageError("No input files (use --osm-file).")
88 if args.only_import_data and args.only_prepare_database:
90 "Cannot use --only-import-data and --only-prepare-database together."
93 if args.only_prepare_database or self._is_complete_import(args):
94 LOG.warning('Creating database')
95 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
96 rouser=args.config.DATABASE_WEBUSER)
98 if not self._is_complete_import(args):
101 if not args.only_prepare_database or \
102 args.only_import_data or \
103 self._is_complete_import(args):
104 # Check if the correct plugins are installed
105 database_import.check_existing_database_plugins(args.config.get_libpq_dsn())
106 LOG.warning('Setting up country tables')
107 country_info.setup_country_tables(args.config.get_libpq_dsn(),
108 args.config.lib_dir.data,
111 LOG.warning('Importing OSM data file')
112 database_import.import_osm_data(files,
113 args.osm2pgsql_options(0, 1),
114 drop=args.no_updates,
115 ignore_errors=args.ignore_errors)
117 LOG.warning('Importing wikipedia importance data')
118 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
119 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
121 LOG.error('Wikipedia importance dump file not found. '
122 'Calculating importance values of locations will not '
123 'use Wikipedia importance data.')
125 LOG.warning('Importing secondary importance raster data')
126 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
127 args.project_dir) != 0:
128 LOG.error('Secondary importance file not imported. '
129 'Falling back to default ranking.')
131 self._setup_tables(args.config, args.reverse_only)
133 if args.continue_at is None or args.continue_at == 'load-data':
134 LOG.warning('Initialise tables')
135 with connect(args.config.get_libpq_dsn()) as conn:
136 database_import.truncate_data_tables(conn)
138 LOG.warning('Load data into placex table')
139 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
141 LOG.warning("Setting up tokenizer")
142 tokenizer = self._get_tokenizer(args.continue_at, args.config)
144 if args.continue_at is None or args.continue_at == 'load-data':
145 LOG.warning('Calculate postcodes')
146 postcodes.update_postcodes(args.config.get_libpq_dsn(),
147 args.project_dir, tokenizer)
149 if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
150 LOG.warning('Indexing places')
151 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
152 indexer.index_full(analyse=not args.index_noanalyse)
154 LOG.warning('Post-process tables')
155 with connect(args.config.get_libpq_dsn()) as conn:
156 database_import.create_search_indices(conn, args.config,
157 drop=args.no_updates,
159 LOG.warning('Create search index for default country names.')
160 country_info.create_country_names(conn, tokenizer,
161 args.config.get_str_list('LANGUAGES'))
163 freeze.drop_update_tables(conn)
164 tokenizer.finalize_import(args.config)
166 LOG.warning('Recompute word counts')
167 tokenizer.update_statistics()
169 webdir = args.project_dir / 'website'
170 LOG.warning('Setup website at %s', webdir)
171 with connect(args.config.get_libpq_dsn()) as conn:
172 refresh.setup_website(webdir, args.config, conn)
174 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
178 def _is_complete_import(self, args: NominatimArgs) -> bool:
179 """ Determine if the import is complete or if only the database should be prepared.
181 return not args.only_import_data and not args.only_prepare_database
184 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
185 """ Set up the basic database layout: tables, indexes and functions.
187 from ..tools import database_import, refresh
189 with connect(config.get_libpq_dsn()) as conn:
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)
205 def _get_tokenizer(self, continue_at: Optional[str],
206 config: Configuration) -> AbstractTokenizer:
207 """ Set up a new tokenizer or load an already initialised one.
209 from ..tokenizer import factory as tokenizer_factory
211 if continue_at is None or continue_at == 'load-data':
212 # (re)initialise the tokenizer data
213 return tokenizer_factory.create_tokenizer(config)
215 # just load the tokenizer
216 return tokenizer_factory.get_tokenizer_for_db(config)
219 def _finalize_database(self, dsn: str, offline: bool) -> None:
220 """ Determine the database date and set the status accordingly.
222 with connect(dsn) as conn:
225 dbdate = status.compute_database_date(conn)
226 status.set_status(conn, dbdate)
227 LOG.info('Database is at %s.', dbdate)
228 except Exception as exc: # pylint: disable=broad-except
229 LOG.error('Cannot determine date of database: %s', exc)
231 properties.set_property(conn, 'database_version', str(NOMINATIM_VERSION))