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 use Wikipedia importance data.')
110 LOG.warning('Importing OSM views GeoTIFF data')
111 database_import.import_osm_views_geotiff()
112 data_path = Path(args.config.OSM_VIEWS_DATA_PATH or args.project_dir)
113 if refresh.import_osm_views_geotiff(args.config.get_libpq_dsn(),
115 LOG.error('OSM views GeoTIFF file not found. '
116 'Calculating importance values of locations will not use OSM views data.')
118 if args.continue_at is None or args.continue_at == 'load-data':
119 LOG.warning('Initialise tables')
120 with connect(args.config.get_libpq_dsn()) as conn:
121 database_import.truncate_data_tables(conn)
123 LOG.warning('Load data into placex table')
124 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
126 LOG.warning("Setting up tokenizer")
127 tokenizer = self._get_tokenizer(args.continue_at, args.config)
129 if args.continue_at is None or args.continue_at == 'load-data':
130 LOG.warning('Calculate postcodes')
131 postcodes.update_postcodes(args.config.get_libpq_dsn(),
132 args.project_dir, tokenizer)
134 if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
135 LOG.warning('Indexing places')
136 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
137 indexer.index_full(analyse=not args.index_noanalyse)
139 LOG.warning('Post-process tables')
140 with connect(args.config.get_libpq_dsn()) as conn:
141 database_import.create_search_indices(conn, args.config,
142 drop=args.no_updates,
144 LOG.warning('Create search index for default country names.')
145 country_info.create_country_names(conn, tokenizer,
146 args.config.get_str_list('LANGUAGES'))
148 freeze.drop_update_tables(conn)
149 tokenizer.finalize_import(args.config)
151 LOG.warning('Recompute word counts')
152 tokenizer.update_statistics()
154 webdir = args.project_dir / 'website'
155 LOG.warning('Setup website at %s', webdir)
156 with connect(args.config.get_libpq_dsn()) as conn:
157 refresh.setup_website(webdir, args.config, conn)
159 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
164 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
165 """ Set up the basic database layout: tables, indexes and functions.
167 from ..tools import database_import, refresh
169 with connect(config.get_libpq_dsn()) as conn:
170 LOG.warning('Create functions (1st pass)')
171 refresh.create_functions(conn, config, False, False)
172 LOG.warning('Create tables')
173 database_import.create_tables(conn, config, reverse_only=reverse_only)
174 refresh.load_address_levels_from_config(conn, config)
175 LOG.warning('Create functions (2nd pass)')
176 refresh.create_functions(conn, config, False, False)
177 LOG.warning('Create table triggers')
178 database_import.create_table_triggers(conn, config)
179 LOG.warning('Create partition tables')
180 database_import.create_partition_tables(conn, config)
181 LOG.warning('Create functions (3rd pass)')
182 refresh.create_functions(conn, config, False, False)
185 def _get_tokenizer(self, continue_at: Optional[str],
186 config: Configuration) -> AbstractTokenizer:
187 """ Set up a new tokenizer or load an already initialised one.
189 from ..tokenizer import factory as tokenizer_factory
191 if continue_at is None or continue_at == 'load-data':
192 # (re)initialise the tokenizer data
193 return tokenizer_factory.create_tokenizer(config)
195 # just load the tokenizer
196 return tokenizer_factory.get_tokenizer_for_db(config)
199 def _finalize_database(self, dsn: str, offline: bool) -> None:
200 """ Determine the database date and set the status accordingly.
202 with connect(dsn) as conn:
205 dbdate = status.compute_database_date(conn)
206 status.set_status(conn, dbdate)
207 LOG.info('Database is at %s.', dbdate)
208 except Exception as exc: # pylint: disable=broad-except
209 LOG.error('Cannot determine date of database: %s', exc)
211 properties.set_property(conn, 'database_version', version_str())