Merge remote-tracking branch 'upstream/master'

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

diff --git a/nominatim/tools/refresh.py b/nominatim/tools/refresh.py
index 859b5646ea188ec58badc636549dcaa09b9a9fd7..00ae5dc95bb4c3c5fa0205e74ab49abf61b51e13 100644 (file)
--- a/nominatim/tools/refresh.py
+++ b/nominatim/tools/refresh.py
@@ -1,16 +1,198 @@
 """
 Functions for bringing auxiliary data in the database up-to-date.
 """
 """
 Functions for bringing auxiliary data in the database up-to-date.
 """

-from ..db.utils import execute_file
+import json
+import logging
+from textwrap import dedent

 
 

-def update_postcodes(conn, datadir):
-    """ Recalculate postcode centroids and add, remove and update entries in the
-        location_postcode table. `conn` is an opne connection to the database.
+from psycopg2 import sql as pysql
+
+from nominatim.db.utils import execute_file
+from nominatim.db.sql_preprocessor import SQLPreprocessor
+from nominatim.version import NOMINATIM_VERSION
+
+LOG = logging.getLogger()
+
+
+def _add_address_level_rows_from_entry(rows, entry):
+    """ 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`.
+    """
+    countries = entry.get('countries') or (None, )
+    for key, values in entry['tags'].items():
+        for value, ranks in values.items():
+            if isinstance(ranks, list):
+                rank_search, rank_address = ranks
+            else:
+                rank_search = rank_address = ranks
+            if not value:
+                value = None
+            for country in countries:
+                rows.append((country, key, value, rank_search, rank_address))
+
+def load_address_levels(conn, table, levels):
+    """ 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 = []
+    for entry in levels:
+        _add_address_level_rows_from_entry(rows, entry)
+
+    with conn.cursor() as cur:
+        cur.drop_table(table)
+
+        cur.execute("""CREATE TABLE {} (country_code varchar(2),
+                                        class TEXT,
+                                        type TEXT,
+                                        rank_search SMALLINT,
+                                        rank_address SMALLINT)""".format(table))
+
+        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))
+
+    conn.commit()
+
+def load_address_levels_from_file(conn, config_file):
+    """ Replace the `address_levels` table with the contents of the config
+        file.
+    """
+    with config_file.open('r') as fdesc:
+        load_address_levels(conn, 'address_levels', json.load(fdesc))
+
+
+def create_functions(conn, config, enable_diff_updates=True, enable_debug=False):
+    """ (Re)create the PL/pgSQL functions.
+    """
+    sql = SQLPreprocessor(conn, config)
+
+    sql.run_sql_file(conn, 'functions.sql',
+                     disable_diff_updates=not enable_diff_updates,
+                     debug=enable_debug)
+
+
+
+WEBSITE_SCRIPTS = (
+    'deletable.php',
+    'details.php',
+    'lookup.php',
+    'polygons.php',
+    'reverse.php',
+    'search.php',
+    'status.php'
+)
+
+# 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', str),
+    ('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),
+)
+
+
+def import_wikipedia_articles(dsn, data_path, ignore_errors=False):
+    """ Replaces the wikipedia importance tables with new data.
+        The import is run in a single transaction so that the new data
+        is replace seemlessly.
+
+        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.

     """
     """

-    execute_file(conn, datadir / 'sql' / 'update-postcodes.sql')
+    datafile = data_path / 'wikimedia-importance.sql.gz'
+
+    if not datafile.exists():
+        return 1
+
+    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 0

 
 
 
 

-def recompute_word_counts(conn, datadir):
-    """ Compute the frequency of full-word search terms.
+def recompute_importance(conn):
+    """ 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.

     """
     """

-    execute_file(conn, datadir / 'sql' / 'words_from_search_name.sql')
+    with conn.cursor() as cur:
+        cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
+        cur.execute("""
+            UPDATE placex SET (wikipedia, importance) =
+               (SELECT wikipedia, importance
+                FROM compute_importance(extratags, country_code, osm_type, osm_id))
+            """)
+        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()
+
+
+def _quote_php_variable(var_type, config, conf_name):
+    if var_type == bool:
+        return 'true' if config.get_bool(conf_name) else 'false'
+
+    if var_type == int:
+        return getattr(config, conf_name)
+
+    if not getattr(config, conf_name):
+        return 'false'
+
+    quoted = getattr(config, conf_name).replace("'", "\\'")
+    return f"'{quoted}'"
+
+
+def setup_website(basedir, config, conn):
+    """ Create the website script stubs.
+    """
+    if not basedir.exists():
+        LOG.info('Creating website directory.')
+        basedir.mkdir()
+
+    template = dedent("""\
+                      <?php
+
+                      @define('CONST_Debug', $_GET['debug'] ?? false);
+                      @define('CONST_LibDir', '{0}');
+                      @define('CONST_TokenizerDir', '{2}');
+                      @define('CONST_NominatimVersion', '{1[0]}.{1[1]}.{1[2]}-{1[3]}');
+
+                      """.format(config.lib_dir.php, NOMINATIM_VERSION,
+                                 config.project_dir / 'tokenizer'))
+
+    for php_name, conf_name, var_type in PHP_CONST_DEFS:
+        varout = _quote_php_variable(var_type, config, conf_name)
+
+        template += f"@define('CONST_{php_name}', {varout});\n"
+
+    template += f"\nrequire_once('{config.lib_dir.php}/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':
+            (basedir / script).write_text(template.format('reverse-only-search.php'), 'utf-8')
+        else:
+            (basedir / script).write_text(template.format(script), 'utf-8')