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=['import-from-file', '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('--prepare-database', action='store_true',
69 help='Create the database but do not import any data')
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()
83 if not files and not args.prepare_database:
84 raise UsageError("No input files (use --osm-file).")
86 if args.continue_at is not None and args.prepare_database:
88 "Cannot use --continue and --prepare-database together."
91 if args.prepare_database or self._is_complete_import(args):
92 LOG.warning('Creating database')
93 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
94 rouser=args.config.DATABASE_WEBUSER)
96 if not self._is_complete_import(args):
99 if not args.prepare_database or \
100 args.continue_at == 'import-from-file' or \
101 self._is_complete_import(args):
102 # Check if the correct plugins are installed
103 database_import.check_existing_database_plugins(args.config.get_libpq_dsn())
104 LOG.warning('Setting up country tables')
105 country_info.setup_country_tables(args.config.get_libpq_dsn(),
106 args.config.lib_dir.data,
109 LOG.warning('Importing OSM data file')
110 database_import.import_osm_data(files,
111 args.osm2pgsql_options(0, 1),
112 drop=args.no_updates,
113 ignore_errors=args.ignore_errors)
115 LOG.warning('Importing wikipedia importance data')
116 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
117 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
119 LOG.error('Wikipedia importance dump file not found. '
120 'Calculating importance values of locations will not '
121 'use Wikipedia importance data.')
123 LOG.warning('Importing secondary importance raster data')
124 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
125 args.project_dir) != 0:
126 LOG.error('Secondary importance file not imported. '
127 'Falling back to default ranking.')
129 self._setup_tables(args.config, args.reverse_only)
131 if args.continue_at is None or args.continue_at in ('import-from-file', 'load-data'):
132 LOG.warning('Initialise tables')
133 with connect(args.config.get_libpq_dsn()) as conn:
134 database_import.truncate_data_tables(conn)
136 LOG.warning('Load data into placex table')
137 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
139 LOG.warning("Setting up tokenizer")
140 tokenizer = self._get_tokenizer(args.continue_at, args.config)
142 if args.continue_at is None or args.continue_at in ('import-from-file', 'load-data'):
143 LOG.warning('Calculate postcodes')
144 postcodes.update_postcodes(args.config.get_libpq_dsn(),
145 args.project_dir, tokenizer)
147 if args.continue_at is None or args.continue_at in ('import-from-file', 'load-data', 'indexing'):
148 LOG.warning('Indexing places')
149 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
150 indexer.index_full(analyse=not args.index_noanalyse)
152 LOG.warning('Post-process tables')
153 with connect(args.config.get_libpq_dsn()) as conn:
154 database_import.create_search_indices(conn, args.config,
155 drop=args.no_updates,
157 LOG.warning('Create search index for default country names.')
158 country_info.create_country_names(conn, tokenizer,
159 args.config.get_str_list('LANGUAGES'))
161 freeze.drop_update_tables(conn)
162 tokenizer.finalize_import(args.config)
164 LOG.warning('Recompute word counts')
165 tokenizer.update_statistics()
167 webdir = args.project_dir / 'website'
168 LOG.warning('Setup website at %s', webdir)
169 with connect(args.config.get_libpq_dsn()) as conn:
170 refresh.setup_website(webdir, args.config, conn)
172 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
176 def _is_complete_import(self, args: NominatimArgs) -> bool:
177 """ Determine if the import is complete or if only the database should be prepared.
179 return args.continue_at is None and not args.prepare_database
182 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
183 """ Set up the basic database layout: tables, indexes and functions.
185 from ..tools import database_import, refresh
187 with connect(config.get_libpq_dsn()) as conn:
188 LOG.warning('Create functions (1st pass)')
189 refresh.create_functions(conn, config, False, False)
190 LOG.warning('Create tables')
191 database_import.create_tables(conn, config, reverse_only=reverse_only)
192 refresh.load_address_levels_from_config(conn, config)
193 LOG.warning('Create functions (2nd pass)')
194 refresh.create_functions(conn, config, False, False)
195 LOG.warning('Create table triggers')
196 database_import.create_table_triggers(conn, config)
197 LOG.warning('Create partition tables')
198 database_import.create_partition_tables(conn, config)
199 LOG.warning('Create functions (3rd pass)')
200 refresh.create_functions(conn, config, False, False)
203 def _get_tokenizer(self, continue_at: Optional[str],
204 config: Configuration) -> AbstractTokenizer:
205 """ Set up a new tokenizer or load an already initialised one.
207 from ..tokenizer import factory as tokenizer_factory
209 if continue_at is None or continue_at == 'load-data':
210 # (re)initialise the tokenizer data
211 return tokenizer_factory.create_tokenizer(config)
213 # just load the tokenizer
214 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:
223 dbdate = status.compute_database_date(conn)
224 status.set_status(conn, dbdate)
225 LOG.info('Database is at %s.', dbdate)
226 except Exception as exc: # pylint: disable=broad-except
227 LOG.error('Cannot determine date of database: %s', exc)
229 properties.set_property(conn, 'database_version', str(NOMINATIM_VERSION))