nominatim/clicmd/setup.py

   1 """
   2 Implementation of the 'import' subcommand.
   3 """
   4 import logging
   5 from pathlib import Path
   6
   7 import psutil
   8
   9 from nominatim.db.connection import connect
  10 from nominatim.db import status, properties
  11 from nominatim.version import NOMINATIM_VERSION
  12 from nominatim.errors import UsageError
  13
  14 # Do not repeat documentation of subcommand classes.
  15 # pylint: disable=C0111
  16 # Using non-top-level imports to avoid eventually unused imports.
  17 # pylint: disable=E0012,C0415
  18
  19 LOG = logging.getLogger()
  20
  21 class SetupAll:
  22     """\
  23     Create a new Nominatim database from an OSM file.
  24     """
  25
  26     @staticmethod
  27     def add_args(parser):
  28         group_name = parser.add_argument_group('Required arguments')
  29         group = group_name.add_mutually_exclusive_group(required=True)
  30         group.add_argument('--osm-file', metavar='FILE',
  31                            help='OSM file to be imported.')
  32         group.add_argument('--continue', dest='continue_at',
  33                            choices=['load-data', 'indexing', 'db-postprocess'],
  34                            help='Continue an import that was interrupted')
  35         group = parser.add_argument_group('Optional arguments')
  36         group.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
  37                            help='Size of cache to be used by osm2pgsql (in MB)')
  38         group.add_argument('--reverse-only', action='store_true',
  39                            help='Do not create tables and indexes for searching')
  40         group.add_argument('--no-partitions', action='store_true',
  41                            help=("Do not partition search indices "
  42                                  "(speeds up import of single country extracts)"))
  43         group.add_argument('--no-updates', action='store_true',
  44                            help="Do not keep tables that are only needed for "
  45                                 "updating the database later")
  46         group = parser.add_argument_group('Expert options')
  47         group.add_argument('--ignore-errors', action='store_true',
  48                            help='Continue import even when errors in SQL are present')
  49         group.add_argument('--index-noanalyse', action='store_true',
  50                            help='Do not perform analyse operations during index')
  51
  52
  53     @staticmethod
  54     def run(args): # pylint: disable=too-many-statements
  55         from ..tools import database_import
  56         from ..tools import refresh
  57         from ..indexer.indexer import Indexer
  58         from ..tools import postcodes
  59         from ..tokenizer import factory as tokenizer_factory
  60
  61         if args.osm_file and not Path(args.osm_file).is_file():
  62             LOG.fatal("OSM file '%s' does not exist.", args.osm_file)
  63             raise UsageError('Cannot access file.')
  64
  65         if args.continue_at is None:
  66             database_import.setup_database_skeleton(args.config.get_libpq_dsn(),
  67                                                     args.data_dir,
  68                                                     args.no_partitions,
  69                                                     rouser=args.config.DATABASE_WEBUSER)
  70
  71             LOG.warning('Importing OSM data file')
  72             database_import.import_osm_data(Path(args.osm_file),
  73                                             args.osm2pgsql_options(0, 1),
  74                                             drop=args.no_updates,
  75                                             ignore_errors=args.ignore_errors)
  76
  77             with connect(args.config.get_libpq_dsn()) as conn:
  78                 LOG.warning('Create functions (1st pass)')
  79                 refresh.create_functions(conn, args.config, False, False)
  80                 LOG.warning('Create tables')
  81                 database_import.create_tables(conn, args.config,
  82                                               reverse_only=args.reverse_only)
  83                 refresh.load_address_levels_from_file(conn, Path(args.config.ADDRESS_LEVEL_CONFIG))
  84                 LOG.warning('Create functions (2nd pass)')
  85                 refresh.create_functions(conn, args.config, False, False)
  86                 LOG.warning('Create table triggers')
  87                 database_import.create_table_triggers(conn, args.config)
  88                 LOG.warning('Create partition tables')
  89                 database_import.create_partition_tables(conn, args.config)
  90                 LOG.warning('Create functions (3rd pass)')
  91                 refresh.create_functions(conn, args.config, False, False)
  92
  93             LOG.warning('Importing wikipedia importance data')
  94             data_path = Path(args.config.WIKIPEDIA_DATA_PATH or args.project_dir)
  95             if refresh.import_wikipedia_articles(args.config.get_libpq_dsn(),
  96                                                  data_path) > 0:
  97                 LOG.error('Wikipedia importance dump file not found. '
  98                           'Will be using default importances.')
  99
 100         if args.continue_at is None or args.continue_at == 'load-data':
 101             LOG.warning('Initialise tables')
 102             with connect(args.config.get_libpq_dsn()) as conn:
 103                 database_import.truncate_data_tables(conn)
 104
 105             LOG.warning('Load data into placex table')
 106             database_import.load_data(args.config.get_libpq_dsn(),
 107                                       args.threads or psutil.cpu_count() or 1)
 108
 109         LOG.warning("Setting up tokenizer")
 110         if args.continue_at is None or args.continue_at == 'load-data':
 111             # (re)initialise the tokenizer data
 112             tokenizer = tokenizer_factory.create_tokenizer(args.config)
 113         else:
 114             # just load the tokenizer
 115             tokenizer = tokenizer_factory.get_tokenizer_for_db(args.config)
 116
 117         if args.continue_at is None or args.continue_at == 'load-data':
 118             LOG.warning('Calculate postcodes')
 119             postcodes.update_postcodes(args.config.get_libpq_dsn(),
 120                                        args.project_dir, tokenizer)
 121
 122         if args.continue_at is None or args.continue_at in ('load-data', 'indexing'):
 123             if args.continue_at is not None and args.continue_at != 'load-data':
 124                 with connect(args.config.get_libpq_dsn()) as conn:
 125                     SetupAll._create_pending_index(conn, args.config.TABLESPACE_ADDRESS_INDEX)
 126             LOG.warning('Indexing places')
 127             indexer = Indexer(args.config.get_libpq_dsn(), tokenizer,
 128                               args.threads or psutil.cpu_count() or 1)
 129             indexer.index_full(analyse=not args.index_noanalyse)
 130
 131         LOG.warning('Post-process tables')
 132         with connect(args.config.get_libpq_dsn()) as conn:
 133             database_import.create_search_indices(conn, args.config,
 134                                                   drop=args.no_updates)
 135             LOG.warning('Create search index for default country names.')
 136             database_import.create_country_names(conn, tokenizer,
 137                                                  args.config.LANGUAGES)
 138         tokenizer.finalize_import(args.config)
 139
 140         webdir = args.project_dir / 'website'
 141         LOG.warning('Setup website at %s', webdir)
 142         refresh.setup_website(webdir, args.config)
 143
 144         with connect(args.config.get_libpq_dsn()) as conn:
 145             try:
 146                 dbdate = status.compute_database_date(conn)
 147                 status.set_status(conn, dbdate)
 148                 LOG.info('Database is at %s.', dbdate)
 149             except Exception as exc: # pylint: disable=broad-except
 150                 LOG.error('Cannot determine date of database: %s', exc)
 151
 152             properties.set_property(conn, 'database_version',
 153                                     '{0[0]}.{0[1]}.{0[2]}-{0[3]}'.format(NOMINATIM_VERSION))
 154
 155         return 0
 156
 157
 158     @staticmethod
 159     def _create_pending_index(conn, tablespace):
 160         """ Add a supporting index for finding places still to be indexed.
 161
 162             This index is normally created at the end of the import process
 163             for later updates. When indexing was partially done, then this
 164             index can greatly improve speed going through already indexed data.
 165         """
 166         if conn.index_exists('idx_placex_pendingsector'):
 167             return
 168
 169         with conn.cursor() as cur:
 170             LOG.warning('Creating support index')
 171             if tablespace:
 172                 tablespace = 'TABLESPACE ' + tablespace
 173             cur.execute("""CREATE INDEX idx_placex_pendingsector
 174                            ON placex USING BTREE (rank_address,geometry_sector)
 175                            {} WHERE indexed_status > 0
 176                         """.format(tablespace))
 177         conn.commit()