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('--no-superuser', action='store_true',
69 help='Do not attempt to create the database')
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
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()
86 raise UsageError("No input files (use --osm-file).")
88 if args.no_superuser and args.prepare_database:
89 raise UsageError("Cannot use --no-superuser 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 args.no_superuser or self.is_complete_import(args):
100 # Check if the correct plugins are installed
101 database_import.check_existing_database_plugins(args.config.get_libpq_dsn())
102 LOG.warning('Setting up country tables')
103 country_info.setup_country_tables(args.config.get_libpq_dsn(),
104 args.config.lib_dir.data,
107 LOG.warning('Importing OSM data file')
108 database_import.import_osm_data(files,
109 args.osm2pgsql_options(0, 1),
110 drop=args.no_updates,
111 ignore_errors=args.ignore_errors)
113 LOG.warning('Importing wikipedia importance data')
114 data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
115 if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
117 LOG.error('Wikipedia importance dump file not found. '
118 'Calculating importance values of locations will not '
119 'use Wikipedia importance data.')
121 LOG.warning('Importing secondary importance raster data')
122 if refresh.import_secondary_importance(args.config.get_libpq_dsn(),
123 args.project_dir) != 0:
124 LOG.error('Secondary importance file not imported. '
125 'Falling back to default ranking.')
127 self._setup_tables(args.config, args.reverse_only)
129 if args.continue_at is None or args.continue_at == 'load-data':
130 LOG.warning('Initialise tables')
131 with connect(args.config.get_libpq_dsn()) as conn:
132 database_import.truncate_data_tables(conn)
134 LOG.warning('Load data into placex table')
135 database_import.load_data(args.config.get_libpq_dsn(), num_threads)
137 LOG.warning("Setting up tokenizer")
138 tokenizer = self._get_tokenizer(args.continue_at, args.config)
140 if args.continue_at is None or args.continue_at == 'load-data':
141 LOG.warning('Calculate postcodes')
142 postcodes.update_postcodes(args.config.get_libpq_dsn(),
143 args.project_dir, tokenizer)
145 if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
146 LOG.warning('Indexing places')
147 indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, num_threads)
148 indexer.index_full(analyse=not args.index_noanalyse)
150 LOG.warning('Post-process tables')
151 with connect(args.config.get_libpq_dsn()) as conn:
152 database_import.create_search_indices(conn, args.config,
153 drop=args.no_updates,
155 LOG.warning('Create search index for default country names.')
156 country_info.create_country_names(conn, tokenizer,
157 args.config.get_str_list('LANGUAGES'))
159 freeze.drop_update_tables(conn)
160 tokenizer.finalize_import(args.config)
162 LOG.warning('Recompute word counts')
163 tokenizer.update_statistics()
165 webdir = args.project_dir / 'website'
166 LOG.warning('Setup website at %s', webdir)
167 with connect(args.config.get_libpq_dsn()) as conn:
168 refresh.setup_website(webdir, args.config, conn)
170 self._finalize_database(args.config.get_libpq_dsn(), args.offline)
174 def _is_complete_import(self, args: NominatimArgs) -> bool:
175 """ Determine if the import is complete or if only the database should be prepared.
177 return not args.no_superuser and not args.prepare_database
180 def _setup_tables(self, config: Configuration, reverse_only: bool) -> None:
181 """ Set up the basic database layout: tables, indexes and functions.
183 from ..tools import database_import, refresh
185 with connect(config.get_libpq_dsn()) as conn:
186 LOG.warning('Create functions (1st pass)')
187 refresh.create_functions(conn, config, False, False)
188 LOG.warning('Create tables')
189 database_import.create_tables(conn, config, reverse_only=reverse_only)
190 refresh.load_address_levels_from_config(conn, config)
191 LOG.warning('Create functions (2nd pass)')
192 refresh.create_functions(conn, config, False, False)
193 LOG.warning('Create table triggers')
194 database_import.create_table_triggers(conn, config)
195 LOG.warning('Create partition tables')
196 database_import.create_partition_tables(conn, config)
197 LOG.warning('Create functions (3rd pass)')
198 refresh.create_functions(conn, config, False, False)
201 def _get_tokenizer(self, continue_at: Optional[str],
202 config: Configuration) -> AbstractTokenizer:
203 """ Set up a new tokenizer or load an already initialised one.
205 from ..tokenizer import factory as tokenizer_factory
207 if continue_at is None or continue_at == 'load-data':
208 # (re)initialise the tokenizer data
209 return tokenizer_factory.create_tokenizer(config)
211 # just load the tokenizer
212 return tokenizer_factory.get_tokenizer_for_db(config)
215 def _finalize_database(self, dsn: str, offline: bool) -> None:
216 """ Determine the database date and set the status accordingly.
218 with connect(dsn) as conn:
221 dbdate = status.compute_database_date(conn)
222 status.set_status(conn, dbdate)
223 LOG.info('Database is at %s.', dbdate)
224 except Exception as exc: # pylint: disable=broad-except
225 LOG.error('Cannot determine date of database: %s', exc)
227 properties.set_property(conn, 'database_version', str(NOMINATIM_VERSION))