don't even try heavily penalized searches

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

diff --git a/nominatim/tools/refresh.py b/nominatim/tools/refresh.py
index 1fcb1577302d1fcca188683426ce6a1dfa48efc1..008fc7143313469a7962934df9ded6c8415b3e7b 100644 (file)
--- a/nominatim/tools/refresh.py
+++ b/nominatim/tools/refresh.py
@@ -1,27 +1,31 @@
+# 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 bringing auxiliary data in the database up-to-date.
 """
 """
 Functions for bringing auxiliary data in the database up-to-date.
 """

-import json
-import re
+from typing import MutableSequence, Tuple, Any, Type, Mapping, Sequence, List, cast
+import logging
+from textwrap import dedent
+from pathlib import Path

 
 

-from psycopg2.extras import execute_values
+from psycopg2 import sql as pysql

 
 

-from ..db.utils import execute_file
-
-def update_postcodes(conn, sql_dir):
-    """ Recalculate postcode centroids and add, remove and update entries in the
-        location_postcode table. `conn` is an opne connection to the database.
-    """
-    execute_file(conn, sql_dir / 'update-postcodes.sql')
+from nominatim.config import Configuration
+from nominatim.db.connection import Connection, connect
+from nominatim.db.utils import execute_file
+from nominatim.db.sql_preprocessor import SQLPreprocessor
+from nominatim.version import NOMINATIM_VERSION

 
 

+LOG = logging.getLogger()

 
 

-def recompute_word_counts(conn, sql_dir):
-    """ Compute the frequency of full-word search terms.
-    """
-    execute_file(conn, sql_dir / 'words_from_search_name.sql')
+OSM_TYPE = {'N': 'node', 'W': 'way', 'R': 'relation'}

 
 

-
-def _add_address_level_rows_from_entry(rows, entry):
+def _add_address_level_rows_from_entry(rows: MutableSequence[Tuple[Any, ...]],
+                                       entry: Mapping[str, Any]) -> None:

     """ Converts a single entry from the JSON format for address rank
         descriptions into a flat format suitable for inserting into a
         PostgreSQL table and adds these lines to `rows`.
     """ Converts a single entry from the JSON format for address rank
         descriptions into a flat format suitable for inserting into a
         PostgreSQL table and adds these lines to `rows`.


@@ -38,130 +42,235 @@ def _add_address_level_rows_from_entry(rows, entry):
             for country in countries:
                 rows.append((country, key, value, rank_search, rank_address))
 
             for country in countries:
                 rows.append((country, key, value, rank_search, rank_address))
 

-def load_address_levels(conn, table, levels):
+
+def load_address_levels(conn: Connection, table: str, levels: Sequence[Mapping[str, Any]]) -> None:

     """ Replace the `address_levels` table with the contents of `levels'.
 
         A new table is created any previously existing table is dropped.
         The table has the following columns:
             country, class, type, rank_search, rank_address
     """
     """ Replace the `address_levels` table with the contents of `levels'.
 
         A new table is created any previously existing table is dropped.
         The table has the following columns:
             country, class, type, rank_search, rank_address
     """

-    rows = []
+    rows: List[Tuple[Any, ...]]  = []

     for entry in levels:
         _add_address_level_rows_from_entry(rows, entry)
 
     with conn.cursor() as cur:
     for entry in levels:
         _add_address_level_rows_from_entry(rows, entry)
 
     with conn.cursor() as cur:

-        cur.execute('DROP TABLE IF EXISTS {}'.format(table))
+        cur.drop_table(table)

 
 

-        cur.execute("""CREATE TABLE {} (country_code varchar(2),
+        cur.execute(pysql.SQL("""CREATE TABLE {} (
+                                        country_code varchar(2),

                                         class TEXT,
                                         type TEXT,
                                         rank_search SMALLINT,
                                         class TEXT,
                                         type TEXT,
                                         rank_search SMALLINT,

-                                        rank_address SMALLINT)""".format(table))
+                                        rank_address SMALLINT)
+                              """).format(pysql.Identifier(table)))

 
 

-        execute_values(cur, "INSERT INTO {} VALUES %s".format(table), rows)
+        cur.execute_values(pysql.SQL("INSERT INTO {} VALUES %s")
+                           .format(pysql.Identifier(table)), rows)

 
 

-        cur.execute('CREATE UNIQUE INDEX ON {} (country_code, class, type)'.format(table))
+        cur.execute(pysql.SQL('CREATE UNIQUE INDEX ON {} (country_code, class, type)')
+                    .format(pysql.Identifier(table)))

 
     conn.commit()
 
 
     conn.commit()
 

-def load_address_levels_from_file(conn, config_file):
-    """ Replace the `address_levels` table with the contents of the config
-        file.
+
+def load_address_levels_from_config(conn: Connection, config: Configuration) -> None:
+    """ Replace the `address_levels` table with the content as
+        defined in the given configuration. Uses the parameter
+        NOMINATIM_ADDRESS_LEVEL_CONFIG to determine the location of the
+        configuration file.

     """
     """

-    with config_file.open('r') as fdesc:
-        load_address_levels(conn, 'address_levels', json.load(fdesc))
-
-PLPGSQL_BASE_MODULES = (
-    'utils.sql',
-    'normalization.sql',
-    'ranking.sql',
-    'importance.sql',
-    'address_lookup.sql',
-    'interpolation.sql'
-)
+    cfg = config.load_sub_configuration('', config='ADDRESS_LEVEL_CONFIG')
+    load_address_levels(conn, 'address_levels', cfg)

 
 

-PLPGSQL_TABLE_MODULES = (
-    ('place', 'place_triggers.sql'),
-    ('placex', 'placex_triggers.sql'),
-    ('location_postcode', 'postcode_triggers.sql')
-)

 
 

-def _get_standard_function_sql(conn, config, sql_dir, enable_diff_updates, enable_debug):
-    """ Read all applicable SQLs containing PL/pgSQL functions, replace
-        placefolders and execute them.
+def create_functions(conn: Connection, config: Configuration,
+                     enable_diff_updates: bool = True,
+                     enable_debug: bool = False) -> None:
+    """ (Re)create the PL/pgSQL functions.

     """
     """

-    sql_func_dir = sql_dir / 'functions'
-    sql = ''
+    sql = SQLPreprocessor(conn, config)
+
+    sql.run_sql_file(conn, 'functions.sql',
+                     disable_diff_updates=not enable_diff_updates,
+                     debug=enable_debug)

 
 

-    # Get the basic set of functions that is always imported.
-    for sql_file in PLPGSQL_BASE_MODULES:
-        with (sql_func_dir / sql_file).open('r') as fdesc:
-            sql += fdesc.read()

 
 

-    # Some files require the presence of a certain table
-    for table, fname in PLPGSQL_TABLE_MODULES:
-        if conn.table_exists(table):
-            with (sql_func_dir / fname).open('r') as fdesc:
-                sql += fdesc.read()

 
 

-    # Replace placeholders.
-    sql = sql.replace('{modulepath}',
-                      config.DATABASE_MODULE_PATH or str((config.project_dir / 'module').resolve()))
+WEBSITE_SCRIPTS = (
+    'deletable.php',
+    'details.php',
+    'lookup.php',
+    'polygons.php',
+    'reverse.php',
+    'search.php',
+    'status.php'
+)

 
 

-    if enable_diff_updates:
-        sql = sql.replace('RETURN NEW; -- %DIFFUPDATES%', '--')
+# constants needed by PHP scripts: PHP name, config name, type
+PHP_CONST_DEFS = (
+    ('Database_DSN', 'DATABASE_DSN', str),
+    ('Default_Language', 'DEFAULT_LANGUAGE', str),
+    ('Log_DB', 'LOG_DB', bool),
+    ('Log_File', 'LOG_FILE', Path),
+    ('NoAccessControl', 'CORS_NOACCESSCONTROL', bool),
+    ('Places_Max_ID_count', 'LOOKUP_MAX_COUNT', int),
+    ('PolygonOutput_MaximumTypes', 'POLYGON_OUTPUT_MAX_TYPES', int),
+    ('Search_BatchMode', 'SEARCH_BATCH_MODE', bool),
+    ('Search_NameOnlySearchFrequencyThreshold', 'SEARCH_NAME_ONLY_THRESHOLD', str),
+    ('Use_US_Tiger_Data', 'USE_US_TIGER_DATA', bool),
+    ('MapIcon_URL', 'MAPICON_URL', str),
+    ('Search_WithinCountries', 'SEARCH_WITHIN_COUNTRIES', bool),
+)

 
 

-    if enable_debug:
-        sql = sql.replace('--DEBUG:', '')

 
 

-    if config.get_bool('LIMIT_REINDEXING'):
-        sql = sql.replace('--LIMIT INDEXING:', '')
+def import_wikipedia_articles(dsn: str, data_path: Path, ignore_errors: bool = False) -> int:
+    """ Replaces the wikipedia importance tables with new data.
+        The import is run in a single transaction so that the new data
+        is replace seamlessly.

 
 

-    if not config.get_bool('USE_US_TIGER_DATA'):
-        sql = sql.replace('-- %NOTIGERDATA% ', '')
+        Returns 0 if all was well and 1 if the importance file could not
+        be found. Throws an exception if there was an error reading the file.
+    """
+    datafile = data_path / 'wikimedia-importance.sql.gz'

 
 

-    if not config.get_bool('USE_AUX_LOCATION_DATA'):
-        sql = sql.replace('-- %NOAUXDATA% ', '')
+    if not datafile.exists():
+        return 1

 
 

-    reverse_only = 'false' if conn.table_exists('search_name') else 'true'
+    pre_code = """BEGIN;
+                  DROP TABLE IF EXISTS "wikipedia_article";
+                  DROP TABLE IF EXISTS "wikipedia_redirect"
+               """
+    post_code = "COMMIT"
+    execute_file(dsn, datafile, ignore_errors=ignore_errors,
+                 pre_code=pre_code, post_code=post_code)

 
 

-    return sql.replace('%REVERSE-ONLY%', reverse_only)
+    return 0

 
 

+def import_secondary_importance(dsn: str, data_path: Path, ignore_errors: bool = False) -> int:
+    """ Replaces the secondary importance raster data table with new data.

 
 

-def replace_partition_string(sql, partitions):
-    """ Replace a partition template with the actual partition code.
+        Returns 0 if all was well and 1 if the raster SQL file could not
+        be found. Throws an exception if there was an error reading the file.

     """
     """

-    for match in re.findall('^-- start(.*?)^-- end', sql, re.M | re.S):
-        repl = ''
-        for part in partitions:
-            repl += match.replace('-partition-', str(part))
-        sql = sql.replace(match, repl)
+    datafile = data_path / 'secondary_importance.sql.gz'
+    if not datafile.exists():
+        return 1
+
+    with connect(dsn) as conn:
+        postgis_version = conn.postgis_version_tuple()
+        if postgis_version[0] < 3:
+            LOG.error('PostGIS version is too old for using OSM raster data.')
+            return 2
+
+    execute_file(dsn, datafile, ignore_errors=ignore_errors)

 
 

-    return sql
+    return 0

 
 

-def _get_partition_function_sql(conn, sql_dir):
-    """ Create functions that work on partition tables.
+def recompute_importance(conn: Connection) -> None:
+    """ Recompute wikipedia links and importance for all entries in placex.
+        This is a long-running operations that must not be executed in
+        parallel with updates.

     """
     with conn.cursor() as cur:
     """
     with conn.cursor() as cur:

-        cur.execute('SELECT distinct partition FROM country_name')
-        partitions = set([0])
-        for row in cur:
-            partitions.add(row[0])
+        cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
+        cur.execute("""
+            UPDATE placex SET (wikipedia, importance) =
+               (SELECT wikipedia, importance
+                FROM compute_importance(extratags, country_code, rank_search, centroid))
+            """)
+        cur.execute("""
+            UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
+             FROM placex d
+             WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
+                   and (s.wikipedia is null or s.importance < d.importance);
+            """)
+
+        cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
+    conn.commit()

 
 

-    with (sql_dir / 'partition-functions.src.sql').open('r') as fdesc:
-        sql = fdesc.read()

 
 

-    return replace_partition_string(sql, sorted(partitions))
+def _quote_php_variable(var_type: Type[Any], config: Configuration,
+                        conf_name: str) -> str:
+    if var_type == bool:
+        return 'true' if config.get_bool(conf_name) else 'false'

 
 

-def create_functions(conn, config, sql_dir,
-                     enable_diff_updates=True, enable_debug=False):
-    """ (Re)create the PL/pgSQL functions.
+    if var_type == int:
+        return cast(str, getattr(config, conf_name))
+
+    if not getattr(config, conf_name):
+        return 'false'
+
+    if var_type == Path:
+        value = str(config.get_path(conf_name) or '')
+    else:
+        value = getattr(config, conf_name)
+
+    quoted = value.replace("'", "\\'")
+    return f"'{quoted}'"
+
+
+def setup_website(basedir: Path, config: Configuration, conn: Connection) -> None:
+    """ Create the website script stubs.

     """
     """

-    sql = _get_standard_function_sql(conn, config, sql_dir,
-                                     enable_diff_updates, enable_debug)
-    sql += _get_partition_function_sql(conn, sql_dir)
+    if config.lib_dir.php is None:
+        LOG.info("Python frontend does not require website setup. Skipping.")
+        return

 
 

-    with conn.cursor() as cur:
-        cur.execute(sql)
+    if not basedir.exists():
+        LOG.info('Creating website directory.')
+        basedir.mkdir()

 
 

-    conn.commit()
+    assert config.project_dir is not None
+    basedata = dedent(f"""\
+                      <?php
+
+                      @define('CONST_Debug', $_GET['debug'] ?? false);
+                      @define('CONST_LibDir', '{config.lib_dir.php}');
+                      @define('CONST_TokenizerDir', '{config.project_dir / 'tokenizer'}');
+                      @define('CONST_NominatimVersion', '{NOMINATIM_VERSION!s}');
+
+                      """)
+
+    for php_name, conf_name, var_type in PHP_CONST_DEFS:
+        varout = _quote_php_variable(var_type, config, conf_name)
+
+        basedata += f"@define('CONST_{php_name}', {varout});\n"
+
+    template = "\nrequire_once(CONST_LibDir.'/website/{}');\n"
+
+    search_name_table_exists = bool(conn and conn.table_exists('search_name'))
+
+    for script in WEBSITE_SCRIPTS:
+        if not search_name_table_exists and script == 'search.php':
+            out = template.format('reverse-only-search.php')
+        else:
+            out = template.format(script)
+
+        (basedir / script).write_text(basedata + out, 'utf-8')
+
+
+def invalidate_osm_object(osm_type: str, osm_id: int, conn: Connection,
+                          recursive: bool = True) -> None:
+    """ Mark the given OSM object for reindexing. When 'recursive' is set
+        to True (the default), then all dependent objects are marked for
+        reindexing as well.
+
+        'osm_type' must be on of 'N' (node), 'W' (way) or 'R' (relation).
+        If the given object does not exist, then nothing happens.
+    """
+    assert osm_type in ('N', 'R', 'W')
+
+    LOG.warning("Invalidating OSM %s %s%s.",
+                OSM_TYPE[osm_type], osm_id,
+                ' and its dependent places' if recursive else '')
+
+    with conn.cursor() as cur:
+        if recursive:
+            sql = """SELECT place_force_update(place_id)
+                     FROM placex WHERE osm_type = %s and osm_id = %s"""
+        else:
+            sql = """UPDATE placex SET indexed_status = 2
+                     WHERE osm_type = %s and osm_id = %s"""
+
+        cur.execute(sql, (osm_type, osm_id))