+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
"""
Implementation of the 'replication' sub-command.
"""
class UpdateReplication:
"""\
Update the database using an online replication service.
+
+ An OSM replication service is an online service that provides regular
+ updates (OSM diff files) for the planet or update they provide. The OSMF
+ provides the primary replication service for the full planet at
+ https://planet.osm.org/replication/ but there are other providers of
+ extracts of OSM data who provide such a service as well.
+
+ This sub-command allows to set up such a replication service and download
+ and import updates at regular intervals. You need to call '--init' once to
+ set up the process or whenever you change the replication configuration
+ parameters. Without any arguments, the sub-command will go into a loop and
+ continuously apply updates as they become available. Giving `--once` just
+ downloads and imports the next batch of updates.
"""
@staticmethod
help='Initialise the update process')
group.add_argument('--no-update-functions', dest='update_functions',
action='store_false',
- help=("Do not update the trigger function to "
- "support differential updates."))
+ help="Do not update the trigger function to "
+ "support differential updates (EXPERT)")
group = parser.add_argument_group('Arguments for updates')
group.add_argument('--check-for-updates', action='store_true',
help='Check if new updates are available and exit')
group.add_argument('--once', action='store_true',
- help=("Download and apply updates only once. When "
- "not set, updates are continuously applied"))
+ help="Download and apply updates only once. When "
+ "not set, updates are continuously applied")
+ group.add_argument('--catch-up', action='store_true',
+ help="Download and apply updates until no new "
+ "data is available on the server")
group.add_argument('--no-index', action='store_false', dest='do_index',
- help=("Do not index the new data. Only applicable "
+ help=("Do not index the new data. Only usable "
"together with --once"))
group.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
help='Size of cache to be used by osm2pgsql (in MB)')
group = parser.add_argument_group('Download parameters')
group.add_argument('--socket-timeout', dest='socket_timeout', type=int, default=60,
- help='Set timeout for file downloads.')
+ help='Set timeout for file downloads')
@staticmethod
def _init_replication(args):
round_time(end - start_import),
round_time(end - batchdate))
+
+ @staticmethod
+ def _compute_update_interval(args):
+ if args.catch_up:
+ return 0
+
+ update_interval = args.config.get_int('REPLICATION_UPDATE_INTERVAL')
+ # Sanity check to not overwhelm the Geofabrik servers.
+ if 'download.geofabrik.de' in args.config.REPLICATION_URL\
+ and update_interval < 86400:
+ LOG.fatal("Update interval too low for download.geofabrik.de.\n"
+ "Please check install documentation "
+ "(https://nominatim.org/release-docs/latest/admin/Import-and-Update#"
+ "setting-up-the-update-process).")
+ raise UsageError("Invalid replication update interval setting.")
+
+ return update_interval
+
+
@staticmethod
def _update(args):
from ..tools import replication
from ..indexer.indexer import Indexer
+ from ..tokenizer import factory as tokenizer_factory
+
+ update_interval = UpdateReplication._compute_update_interval(args)
params = args.osm2pgsql_options(default_cache=2000, default_threads=1)
params.update(base_url=args.config.REPLICATION_URL,
- update_interval=args.config.get_int('REPLICATION_UPDATE_INTERVAL'),
+ update_interval=update_interval,
import_file=args.project_dir / 'osmosischange.osc',
max_diff_size=args.config.get_int('REPLICATION_MAX_DIFF'),
indexed_only=not args.once)
- # Sanity check to not overwhelm the Geofabrik servers.
- if 'download.geofabrik.de'in params['base_url']\
- and params['update_interval'] < 86400:
- LOG.fatal("Update interval too low for download.geofabrik.de.\n"
- "Please check install documentation "
- "(https://nominatim.org/release-docs/latest/admin/Import-and-Update#"
- "setting-up-the-update-process).")
- raise UsageError("Invalid replication update interval setting.")
-
if not args.once:
if not args.do_index:
LOG.fatal("Indexing cannot be disabled when running updates continuously.")
raise UsageError("Bad argument '--no-index'.")
recheck_interval = args.config.get_int('REPLICATION_RECHECK_INTERVAL')
+ tokenizer = tokenizer_factory.get_tokenizer_for_db(args.config)
+ indexer = Indexer(args.config.get_libpq_dsn(), tokenizer, args.threads or 1)
+
while True:
with connect(args.config.get_libpq_dsn()) as conn:
start = dt.datetime.now(dt.timezone.utc)
if state is not replication.UpdateState.NO_CHANGES:
status.log_status(conn, start, 'import')
batchdate, _, _ = status.get_status(conn)
+ conn.commit()
if state is not replication.UpdateState.NO_CHANGES and args.do_index:
index_start = dt.datetime.now(dt.timezone.utc)
- indexer = Indexer(args.config.get_libpq_dsn(),
- args.threads or 1)
- indexer.index_boundaries(0, 30)
- indexer.index_by_rank(0, 30)
+ indexer.index_full(analyse=False)
with connect(args.config.get_libpq_dsn()) as conn:
status.set_indexed(conn, True)
status.log_status(conn, index_start, 'index')
+ conn.commit()
else:
index_start = None
+ if state is replication.UpdateState.NO_CHANGES and \
+ args.catch_up or update_interval > 40*60:
+ while indexer.has_pending():
+ indexer.index_full(analyse=False)
+
if LOG.isEnabledFor(logging.WARNING):
UpdateReplication._report_update(batchdate, start, index_start)
- if args.once:
+ if args.once or (args.catch_up and state is replication.UpdateState.NO_CHANGES):
break
if state is replication.UpdateState.NO_CHANGES:
projects / nominatim.git / blobdiff