remove redundant 'u' prefixes for unicode strings

[nominatim.git] / nominatim / tools / database_import.py

diff --git a/nominatim/tools/database_import.py b/nominatim/tools/database_import.py
index 0dd93490d7b4c8c316bdd5635a02a3b1c9a6c6da..50938c19abf2e02fa1ad7647d64a911064278799 100644 (file)
--- a/nominatim/tools/database_import.py
+++ b/nominatim/tools/database_import.py
@@ -1,3 +1,9 @@
+# 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.
 """
 """
 Functions for setting up and importing a new Nominatim database.
 """


@@ -8,11 +14,9 @@ import subprocess
 from pathlib import Path
 
 import psutil
 from pathlib import Path
 
 import psutil

-import psycopg2.extras

 from psycopg2 import sql as pysql
 
 from nominatim.db.connection import connect, get_pg_env
 from psycopg2 import sql as pysql
 
 from nominatim.db.connection import connect, get_pg_env

-from nominatim.db import utils as db_utils

 from nominatim.db.async_connection import DBConnection
 from nominatim.db.sql_preprocessor import SQLPreprocessor
 from nominatim.tools.exec_utils import run_osm2pgsql
 from nominatim.db.async_connection import DBConnection
 from nominatim.db.sql_preprocessor import SQLPreprocessor
 from nominatim.tools.exec_utils import run_osm2pgsql


@@ -21,24 +25,24 @@ from nominatim.version import POSTGRESQL_REQUIRED_VERSION, POSTGIS_REQUIRED_VERS
 
 LOG = logging.getLogger()
 
 
 LOG = logging.getLogger()
 

-def setup_database_skeleton(dsn, data_dir, no_partitions, rouser=None):
-    """ Create a new database for Nominatim and populate it with the
-        essential extensions and data.
+def _require_version(module, actual, expected):
+    """ Compares the version for the given module and raises an exception
+        if the actual version is too old.

     """
     """

-    LOG.warning('Creating database')
-    create_db(dsn, rouser)
+    if actual < expected:
+        LOG.fatal('Minimum supported version of %s is %d.%d. '
+                  'Found version %d.%d.',
+                  module, expected[0], expected[1], actual[0], actual[1])
+        raise UsageError(f'{module} is too old.')

 
 

-    LOG.warning('Setting up database')
-    with connect(dsn) as conn:
-        setup_extensions(conn)

 
 

-    LOG.warning('Loading basic data')
-    import_base_data(dsn, data_dir, no_partitions)
+def setup_database_skeleton(dsn, rouser=None):
+    """ Create a new database for Nominatim and populate it with the
+        essential extensions.

 
 

+        The function fails when the database already exists or Postgresql or
+        PostGIS versions are too old.

 
 

-def create_db(dsn, rouser=None):
-    """ Create a new database for the given DSN. Fails when the database
-        already exists or the PostgreSQL version is too old.

         Uses `createdb` to create the database.
 
         If 'rouser' is given, then the function also checks that the user
         Uses `createdb` to create the database.
 
         If 'rouser' is given, then the function also checks that the user


@@ -52,13 +56,9 @@ def create_db(dsn, rouser=None):
         raise UsageError('Creating new database failed.')
 
     with connect(dsn) as conn:
         raise UsageError('Creating new database failed.')
 
     with connect(dsn) as conn:

-        postgres_version = conn.server_version_tuple()
-        if postgres_version < POSTGRESQL_REQUIRED_VERSION:
-            LOG.fatal('Minimum supported version of Postgresql is %d.%d. '
-                      'Found version %d.%d.',
-                      POSTGRESQL_REQUIRED_VERSION[0], POSTGRESQL_REQUIRED_VERSION[1],
-                      postgres_version[0], postgres_version[1])
-            raise UsageError('PostgreSQL server is too old.')
+        _require_version('PostgreSQL server',
+                         conn.server_version_tuple(),
+                         POSTGRESQL_REQUIRED_VERSION)

 
         if rouser is not None:
             with conn.cursor() as cur:
 
         if rouser is not None:
             with conn.cursor() as cur:


@@ -69,38 +69,15 @@ def create_db(dsn, rouser=None):
                               "\n      createuser %s", rouser, rouser)
                     raise UsageError('Missing read-only user.')
 
                               "\n      createuser %s", rouser, rouser)
                     raise UsageError('Missing read-only user.')
 

+        # Create extensions.
+        with conn.cursor() as cur:
+            cur.execute('CREATE EXTENSION IF NOT EXISTS hstore')
+            cur.execute('CREATE EXTENSION IF NOT EXISTS postgis')
+        conn.commit()

 
 

-
-def setup_extensions(conn):
-    """ Set up all extensions needed for Nominatim. Also checks that the
-        versions of the extensions are sufficient.
-    """
-    with conn.cursor() as cur:
-        cur.execute('CREATE EXTENSION IF NOT EXISTS hstore')
-        cur.execute('CREATE EXTENSION IF NOT EXISTS postgis')
-    conn.commit()
-
-    postgis_version = conn.postgis_version_tuple()
-    if postgis_version < POSTGIS_REQUIRED_VERSION:
-        LOG.fatal('Minimum supported version of PostGIS is %d.%d. '
-                  'Found version %d.%d.',
-                  POSTGIS_REQUIRED_VERSION[0], POSTGIS_REQUIRED_VERSION[1],
-                  postgis_version[0], postgis_version[1])
-        raise UsageError('PostGIS version is too old.')
-
-
-def import_base_data(dsn, sql_dir, ignore_partitions=False):
-    """ Create and populate the tables with basic static data that provides
-        the background for geocoding. Data is assumed to not yet exist.
-    """
-    db_utils.execute_file(dsn, sql_dir / 'country_name.sql')
-    db_utils.execute_file(dsn, sql_dir / 'country_osm_grid.sql.gz')
-
-    if ignore_partitions:
-        with connect(dsn) as conn:
-            with conn.cursor() as cur:
-                cur.execute('UPDATE country_name SET partition = 0')
-            conn.commit()
+        _require_version('PostGIS',
+                         conn.postgis_version_tuple(),
+                         POSTGIS_REQUIRED_VERSION)

 
 
 def import_osm_data(osm_files, options, drop=False, ignore_errors=False):
 
 
 def import_osm_data(osm_files, options, drop=False, ignore_errors=False):


@@ -257,44 +234,9 @@ def create_search_indices(conn, config, drop=False):
         bad_indices = [row[0] for row in list(cur)]
         for idx in bad_indices:
             LOG.info("Drop invalid index %s.", idx)
         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)
     conn.commit()
 
     sql = SQLPreprocessor(conn, config)
 
     sql.run_sql_file(conn, 'indices.sql', drop=drop)

-
-
-def create_country_names(conn, tokenizer, languages=None):
-    """ Add default country names to search index. `languages` is a comma-
-        separated list of language codes as used in OSM. If `languages` is not
-        empty then only name translations for the given languages are added
-        to the index.
-    """
-    if languages:
-        languages = languages.split(',')
-
-    def _include_key(key):
-        return key == 'name' or \
-               (key.startswith('name:') and (not languages or key[5:] in languages))
-
-    with conn.cursor() as cur:
-        psycopg2.extras.register_hstore(cur)
-        cur.execute("""SELECT country_code, name FROM country_name
-                       WHERE country_code is not null""")
-
-        with tokenizer.name_analyzer() as analyzer:
-            for code, name in cur:
-                names = {'countrycode': code}
-                if code == 'gb':
-                    names['short_name'] = 'UK'
-                if code == 'us':
-                    names['short_name'] = 'United States'
-
-                # country names (only in languages as provided)
-                if name:
-                    names.update(((k, v) for k, v in name.items() if _include_key(k)))
-
-                analyzer.add_country_names(code, names)
-
-    conn.commit()