X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/6f6910101e495cb7dbda2a295645f6174fce6a54..e0a7b94e49cb4c47d0a42f0d8108f826e9de59f3:/nominatim/tools/tiger_data.py?ds=inline diff --git a/nominatim/tools/tiger_data.py b/nominatim/tools/tiger_data.py index 07772c70..8610880f 100644 --- a/nominatim/tools/tiger_data.py +++ b/nominatim/tools/tiger_data.py @@ -1,15 +1,23 @@ +# 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 importing tiger data and handling tarbar and directory files """ +import csv +import io import logging import os import tarfile -import selectors from nominatim.db.connection import connect -from nominatim.db.async_connection import DBConnection +from nominatim.db.async_connection import WorkerPool from nominatim.db.sql_preprocessor import SQLPreprocessor - +from nominatim.errors import UsageError +from nominatim.indexer.place_info import PlaceInfo LOG = logging.getLogger() @@ -20,96 +28,81 @@ def handle_tarfile_or_directory(data_dir): tar = None if data_dir.endswith('.tar.gz'): - tar = tarfile.open(data_dir) - sql_files = [i for i in tar.getmembers() if i.name.endswith('.sql')] - LOG.warning("Found %d SQL files in tarfile with path %s", len(sql_files), data_dir) - if not sql_files: + try: + tar = tarfile.open(data_dir) + except tarfile.ReadError as err: + LOG.fatal("Cannot open '%s'. Is this a tar file?", data_dir) + raise UsageError("Cannot open Tiger data file.") from err + + csv_files = [i for i in tar.getmembers() if i.name.endswith('.csv')] + LOG.warning("Found %d CSV files in tarfile with path %s", len(csv_files), data_dir) + if not csv_files: LOG.warning("Tiger data import selected but no files in tarfile's path %s", data_dir) return None, None else: files = os.listdir(data_dir) - sql_files = [os.path.join(data_dir, i) for i in files if i.endswith('.sql')] - LOG.warning("Found %d SQL files in path %s", len(sql_files), data_dir) - if not sql_files: + csv_files = [os.path.join(data_dir, i) for i in files if i.endswith('.csv')] + LOG.warning("Found %d CSV files in path %s", len(csv_files), data_dir) + if not csv_files: LOG.warning("Tiger data import selected but no files found in path %s", data_dir) return None, None - return sql_files, tar + return csv_files, tar -def handle_threaded_sql_statements(sel, file): +def handle_threaded_sql_statements(pool, fd, analyzer): """ Handles sql statement with multiplexing """ - lines = 0 - end_of_file = False # Using pool of database connections to execute sql statements - while not end_of_file: - for key, _ in sel.select(1): - conn = key.data - try: - if conn.is_done(): - sql_query = file.readline() - lines += 1 - if not sql_query: - end_of_file = True - break - conn.perform(sql_query) - if lines == 1000: - print('. ', end='', flush=True) - lines = 0 - except Exception as exc: # pylint: disable=broad-except - LOG.info('Wrong SQL statement: %s', exc) - -def handle_unregister_connection_pool(sel, place_threads): - """ Handles unregistering pool of connections - """ - while place_threads > 0: - for key, _ in sel.select(1): - conn = key.data - sel.unregister(conn) - try: - conn.wait() - except Exception as exc: # pylint: disable=broad-except - LOG.info('Wrong SQL statement: %s', exc) - conn.close() - place_threads -= 1 - -def add_tiger_data(data_dir, config, threads): + sql = "SELECT tiger_line_import(%s, %s, %s, %s, %s, %s)" + + for row in csv.DictReader(fd, delimiter=';'): + try: + address = dict(street=row['street'], postcode=row['postcode']) + args = ('SRID=4326;' + row['geometry'], + int(row['from']), int(row['to']), row['interpolation'], + PlaceInfo({'address': address}).analyze(analyzer), + analyzer.normalize_postcode(row['postcode'])) + except ValueError: + continue + pool.next_free_worker().perform(sql, args=args) + + lines += 1 + if lines == 1000: + print('.', end='', flush=True) + lines = 0 + + +def add_tiger_data(data_dir, config, threads, tokenizer): """ Import tiger data from directory or tar file `data dir`. """ dsn = config.get_libpq_dsn() - sql_files, tar = handle_tarfile_or_directory(data_dir) + files, tar = handle_tarfile_or_directory(data_dir) - if not sql_files: + if not files: return with connect(dsn) as conn: sql = SQLPreprocessor(conn, config) sql.run_sql_file(conn, 'tiger_import_start.sql') - # Reading sql_files and then for each file line handling + # Reading files and then for each file line handling # sql_query in chunks. - sel = selectors.DefaultSelector() place_threads = max(1, threads - 1) - # Creates a pool of database connections - for _ in range(place_threads): - conn = DBConnection(dsn) - conn.connect() - sel.register(conn, selectors.EVENT_WRITE, conn) - - for sql_file in sql_files: - if not tar: - file = open(sql_file) - else: - file = tar.extractfile(sql_file) + with WorkerPool(dsn, place_threads, ignore_sql_errors=True) as pool: + with tokenizer.name_analyzer() as analyzer: + for fname in files: + if not tar: + fd = open(fname) + else: + fd = io.TextIOWrapper(tar.extractfile(fname)) - handle_threaded_sql_statements(sel, file) + handle_threaded_sql_statements(pool, fd, analyzer) - # Unregistering pool of database connections - handle_unregister_connection_pool(sel, place_threads) + fd.close() if tar: tar.close()