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('--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)')
70 def run(self, args: NominatimArgs) -> int: # pylint: disable=too-many-statements
71 from ..data import country_info
72 from ..tools import database_import, refresh, postcodes, freeze
73 from ..indexer.indexer import Indexer
75 num_threads = args.threads or psutil.cpu_count() or 1
77 country_info.setup_country_config(args.config)
79 if args.continue_at is None:
80 files = args.get_osm_file_list()
82 raise UsageError("No input files (use --osm-file).")
84 LOG.warning('Creating database')
85 database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
86 rouser=args.config.DATABASE_WEBUSER)
88 LOG.warning('Setting up country tables')
89 country_info.setup_country_tables(args.config.get_libpq_dsn(),
93 LOG.warning('Importing OSM data file')
94 database_import.import_osm_data(files,
95 args.osm2pgsql_options(0, 1),
97 ignore_errors=args.ignore_errors)
99 self._setup_tables(args.config, args.reverse_only)
101 LOG.warning('Importing wikipedia importance data')
102 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
103 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
105 LOG.error('Wikipedia importance dump file not found. '
106 'Will be using default importances.')
108 if args.continue_at is None or args.continue_at == 'load-data':
109 LOG.warning('Initialise tables')
110 with connect(args.config.get_libpq_dsn()) as conn:
111 database_import.truncate_data_tables(conn)
113 LOG.warning('Load data into placex table')
114 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
116 LOG.warning("Setting up tokenizer")
117 tokenizer = self._get_tokenizer(args.continue_at, args.config)
119 if args.continue_at is None or args.continue_at == 'load-data':
120 LOG.warning('Calculate postcodes')
121 postcodes.update_postcodes(args.config.get_libpq_dsn(),
122 args.project_dir, tokenizer)
124 if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
125 LOG.warning('Indexing places')
126 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
127 indexer.index_full(analyse=not args.index_noanalyse)
129 LOG.warning('Post-process tables')
130 with connect(args.config.get_libpq_dsn()) as conn:
131 database_import.create_search_indices(conn, args.config,
132 drop=args.no_updates,
134 LOG.warning('Create search index for default country names.')
135 country_info.create_country_names(conn, tokenizer,
136 args.config.get_str_list('LANGUAGES'))
138 freeze.drop_update_tables(conn)
139 tokenizer.finalize_import(args.config)
141 LOG.warning('Recompute word counts')
142 tokenizer.update_statistics()
144 webdir = args.project_dir / 'website'
145 LOG.warning('Setup website at %s', webdir)
146 with connect(args.config.get_libpq_dsn()) as conn:
147 refresh.setup_website(webdir, args.config, conn)
149 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
154 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
155 """ Set up the basic database layout: tables, indexes and functions.
157 from ..tools import database_import, refresh
159 with connect(config.get_libpq_dsn()) as conn:
160 LOG.warning('Create functions (1st pass)')
161 refresh.create_functions(conn, config, False, False)
162 LOG.warning('Create tables')
163 database_import.create_tables(conn, config, reverse_only=reverse_only)
164 refresh.load_address_levels_from_config(conn, config)
165 LOG.warning('Create functions (2nd pass)')
166 refresh.create_functions(conn, config, False, False)
167 LOG.warning('Create table triggers')
168 database_import.create_table_triggers(conn, config)
169 LOG.warning('Create partition tables')
170 database_import.create_partition_tables(conn, config)
171 LOG.warning('Create functions (3rd pass)')
172 refresh.create_functions(conn, config, False, False)
175 def _get_tokenizer(self, continue_at: Optional[str],
176 config: Configuration) -> AbstractTokenizer:
177 """ Set up a new tokenizer or load an already initialised one.
179 from ..tokenizer import factory as tokenizer_factory
181 if continue_at is None or continue_at == 'load-data':
182 # (re)initialise the tokenizer data
183 return tokenizer_factory.create_tokenizer(config)
185 # just load the tokenizer
186 return tokenizer_factory.get_tokenizer_for_db(config)
189 def _finalize_database(self, dsn: str, offline: bool) -> None:
190 """ Determine the database date and set the status accordingly.
192 with connect(dsn) as conn:
195 dbdate = status.compute_database_date(conn)
196 status.set_status(conn, dbdate)
197 LOG.info('Database is at %s.', dbdate)
198 except Exception as exc: # pylint: disable=broad-except
199 LOG.error('Cannot determine date of database: %s', exc)
201 properties.set_property(conn, 'database_version', version_str())