+# 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.
"""
Functions for setting up and importing a new Nominatim database.
"""
+from typing import Tuple, Optional, Union, Sequence, MutableMapping, Any
import logging
import os
import selectors
import psutil
from psycopg2 import sql as pysql
-from nominatim.db.connection import connect, get_pg_env
+from nominatim.config import Configuration
+from nominatim.db.connection import connect, get_pg_env, Connection
from nominatim.db.async_connection import DBConnection
from nominatim.db.sql_preprocessor import SQLPreprocessor
from nominatim.tools.exec_utils import run_osm2pgsql
from nominatim.errors import UsageError
-from nominatim.version import POSTGRESQL_REQUIRED_VERSION, POSTGIS_REQUIRED_VERSION
+from nominatim.version import POSTGRESQL_REQUIRED_VERSION, \
+ POSTGIS_REQUIRED_VERSION
LOG = logging.getLogger()
-def _require_version(module, actual, expected):
+def _require_version(module: str, actual: Tuple[int, int], expected: Tuple[int, int]) -> None:
""" Compares the version for the given module and raises an exception
if the actual version is too old.
"""
raise UsageError(f'{module} is too old.')
-def setup_database_skeleton(dsn, rouser=None):
+def _require_loaded(extension_name: str, conn: Connection) -> None:
+ """ Check that the given extension is loaded. """
+ if not conn.extension_loaded(extension_name):
+ LOG.fatal('Required module %s is not loaded.', extension_name)
+ raise UsageError(f'{extension_name} is not loaded.')
+
+
+def check_existing_database_plugins(dsn: str) -> None:
+ """ Check that the database has the required plugins installed."""
+ with connect(dsn) as conn:
+ _require_version('PostgreSQL server',
+ conn.server_version_tuple(),
+ POSTGRESQL_REQUIRED_VERSION)
+ _require_version('PostGIS',
+ conn.postgis_version_tuple(),
+ POSTGIS_REQUIRED_VERSION)
+ _require_loaded('hstore', conn)
+
+
+def setup_database_skeleton(dsn: str, rouser: Optional[str] = None) -> None:
""" Create a new database for Nominatim and populate it with the
essential extensions.
cnt = cur.scalar('SELECT count(*) FROM pg_user where usename = %s',
(rouser, ))
if cnt == 0:
- LOG.fatal("Web user '%s' does not exists. Create it with:\n"
+ LOG.fatal("Web user '%s' does not exist. Create it with:\n"
"\n createuser %s", rouser, rouser)
raise UsageError('Missing read-only user.')
with conn.cursor() as cur:
cur.execute('CREATE EXTENSION IF NOT EXISTS hstore')
cur.execute('CREATE EXTENSION IF NOT EXISTS postgis')
+
+ postgis_version = conn.postgis_version_tuple()
+ if postgis_version[0] >= 3:
+ cur.execute('CREATE EXTENSION IF NOT EXISTS postgis_raster')
+
conn.commit()
_require_version('PostGIS',
POSTGIS_REQUIRED_VERSION)
-def import_osm_data(osm_files, options, drop=False, ignore_errors=False):
+def import_osm_data(osm_files: Union[Path, Sequence[Path]],
+ options: MutableMapping[str, Any],
+ drop: bool = False, ignore_errors: bool = False) -> None:
""" Import the given OSM files. 'options' contains the list of
default settings for osm2pgsql.
"""
Path(options['flatnode_file']).unlink()
-def create_tables(conn, config, reverse_only=False):
+def create_tables(conn: Connection, config: Configuration, reverse_only: bool = False) -> None:
""" Create the set of basic tables.
When `reverse_only` is True, then the main table for searching will
be skipped and only reverse search is possible.
sql.run_sql_file(conn, 'tables.sql')
-def create_table_triggers(conn, config):
+def create_table_triggers(conn: Connection, config: Configuration) -> None:
""" Create the triggers for the tables. The trigger functions must already
have been imported with refresh.create_functions().
"""
sql.run_sql_file(conn, 'table-triggers.sql')
-def create_partition_tables(conn, config):
+def create_partition_tables(conn: Connection, config: Configuration) -> None:
""" Create tables that have explicit partitioning.
"""
sql = SQLPreprocessor(conn, config)
sql.run_sql_file(conn, 'partition-tables.src.sql')
-def truncate_data_tables(conn):
+def truncate_data_tables(conn: Connection) -> None:
""" Truncate all data tables to prepare for a fresh load.
"""
with conn.cursor() as cur:
'extratags', 'geometry')))
-def load_data(dsn, threads):
+def load_data(dsn: str, threads: int) -> None:
""" Copy data into the word and placex table.
"""
sel = selectors.DefaultSelector()
print('.', end='', flush=True)
print('\n')
- with connect(dsn) as conn:
- with conn.cursor() as cur:
+ with connect(dsn) as syn_conn:
+ with syn_conn.cursor() as cur:
cur.execute('ANALYSE')
-def create_search_indices(conn, config, drop=False):
+def create_search_indices(conn: Connection, config: Configuration,
+ drop: bool = False, threads: int = 1) -> None:
""" Create tables that have explicit partitioning.
"""
bad_indices = [row[0] for row in list(cur)]
for idx in bad_indices:
LOG.info("Drop invalid index %s.", idx)
- cur.execute('DROP INDEX "{}"'.format(idx))
+ cur.execute(pysql.SQL('DROP INDEX {}').format(pysql.Identifier(idx)))
conn.commit()
sql = SQLPreprocessor(conn, config)
- sql.run_sql_file(conn, 'indices.sql', drop=drop)
+ sql.run_parallel_sql_file(config.get_libpq_dsn(),
+ 'indices.sql', min(8, threads), drop=drop)
projects / nominatim.git / blobdiff