X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/1801db523b7d125a408cf041d24cb41d9ef72632..1d2f4264a2453ac83492213aff37f4d294845f68:/nominatim/nominatim.py diff --git a/nominatim/nominatim.py b/nominatim/nominatim.py index 54d9b208..0819bb11 100755 --- a/nominatim/nominatim.py +++ b/nominatim/nominatim.py @@ -28,17 +28,12 @@ import sys import re import getpass from datetime import datetime -import psycopg2 -from psycopg2.extras import wait_select import select -log = logging.getLogger() - -def make_connection(options, asynchronous=False): - return psycopg2.connect(dbname=options.dbname, user=options.user, - password=options.password, host=options.host, - port=options.port, async_=asynchronous) +from indexer.progress import ProgressLogger +from indexer.db import DBConnection, make_connection +log = logging.getLogger() class RankRunner(object): """ Returns SQL commands for indexing one rank within the placex table. @@ -50,24 +45,19 @@ class RankRunner(object): def name(self): return "rank {}".format(self.rank) - def sql_index_sectors(self): - return """SELECT geometry_sector, count(*) FROM placex - WHERE rank_search = {} and indexed_status > 0 - GROUP BY geometry_sector - ORDER BY geometry_sector""".format(self.rank) + def sql_count_objects(self): + return """SELECT count(*) FROM placex + WHERE rank_address = {} and indexed_status > 0 + """.format(self.rank) - def sql_nosector_places(self): + def sql_get_objects(self): return """SELECT place_id FROM placex - WHERE indexed_status > 0 and rank_search = {} + WHERE indexed_status > 0 and rank_address = {} ORDER BY geometry_sector""".format(self.rank) - def sql_sector_places(self): - return """SELECT place_id FROM placex - WHERE indexed_status > 0 and rank_search = {} - and geometry_sector = %s""".format(self.rank) - - def sql_index_place(self): - return "UPDATE placex SET indexed_status = 0 WHERE place_id = %s" + def sql_index_place(self, ids): + return "UPDATE placex SET indexed_status = 0 WHERE place_id IN ({})"\ + .format(','.join((str(i) for i in ids))) class InterpolationRunner(object): @@ -78,194 +68,146 @@ class InterpolationRunner(object): def name(self): return "interpolation lines (location_property_osmline)" - def sql_index_sectors(self): - return """SELECT geometry_sector, count(*) FROM location_property_osmline - WHERE indexed_status > 0 - GROUP BY geometry_sector - ORDER BY geometry_sector""" + def sql_count_objects(self): + return """SELECT count(*) FROM location_property_osmline + WHERE indexed_status > 0""" - def sql_nosector_places(self): + def sql_get_objects(self): return """SELECT place_id FROM location_property_osmline WHERE indexed_status > 0 ORDER BY geometry_sector""" - def sql_sector_places(self): - return """SELECT place_id FROM location_property_osmline - WHERE indexed_status > 0 and geometry_sector = %s - ORDER BY geometry_sector""" - - def sql_index_place(self): + def sql_index_place(self, ids): return """UPDATE location_property_osmline - SET indexed_status = 0 WHERE place_id = %s""" - + SET indexed_status = 0 WHERE place_id IN ({})"""\ + .format(','.join((str(i) for i in ids))) -class DBConnection(object): - """ A single non-blocking database connection. +class BoundaryRunner(object): + """ Returns SQL commands for indexing the administrative boundaries + of a certain rank. """ - def __init__(self, options): - self.conn = make_connection(options, asynchronous=True) - self.wait() - - self.cursor = self.conn.cursor() - - self.current_query = None - self.current_params = None - - def wait(self): - """ Block until any pending operation is done. - """ - wait_select(self.conn) - self.current_query = None - - def perform(self, sql, args=None): - """ Send SQL query to the server. Returns immediately without - blocking. - """ - self.current_query = sql - self.current_params = args - self.cursor.execute(sql, args) - - def fileno(self): - """ File descriptor to wait for. (Makes this class select()able.) - """ - return self.conn.fileno() + def __init__(self, rank): + self.rank = rank - def is_done(self): - """ Check if the connection is available for a new query. + def name(self): + return "boundaries rank {}".format(self.rank) - Also checks if the previous query has run into a deadlock. - If so, then the previous query is repeated. - """ - if self.current_query is None: - return True - - try: - if self.conn.poll() == psycopg2.extensions.POLL_OK: - self.current_query = None - return True - except psycopg2.extensions.TransactionRollbackError as e: - if e.pgcode == '40P01': - log.info("Deadlock detected (params = {}), retry.".format(self.current_params)) - self.cursor.execute(self.current_query, self.current_params) - else: - raise + def sql_count_objects(self): + return """SELECT count(*) FROM placex + WHERE indexed_status > 0 + AND rank_search = {} + AND class = 'boundary' and type = 'administrative'""".format(self.rank) - return False + def sql_get_objects(self): + return """SELECT place_id FROM placex + WHERE indexed_status > 0 and rank_search = {} + and class = 'boundary' and type = 'administrative' + ORDER BY partition, admin_level""".format(self.rank) + def sql_index_place(self, ids): + return "UPDATE placex SET indexed_status = 0 WHERE place_id IN ({})"\ + .format(','.join((str(i) for i in ids))) class Indexer(object): """ Main indexing routine. """ def __init__(self, options): - self.minrank = max(0, options.minrank) + self.minrank = max(1, options.minrank) self.maxrank = min(30, options.maxrank) self.conn = make_connection(options) self.threads = [DBConnection(options) for i in range(options.threads)] - def run(self): - """ Run indexing over the entire database. + def index_boundaries(self): + log.warning("Starting indexing boundaries using {} threads".format( + len(self.threads))) + + for rank in range(max(self.minrank, 5), min(self.maxrank, 26)): + self.index(BoundaryRunner(rank)) + + def index_by_rank(self): + """ Run classic indexing by rank. """ log.warning("Starting indexing rank ({} to {}) using {} threads".format( self.minrank, self.maxrank, len(self.threads))) - for rank in range(self.minrank, self.maxrank): + for rank in range(max(1, self.minrank), self.maxrank): self.index(RankRunner(rank)) + if self.maxrank == 30: - self.index(InterpolationRunner()) + self.index(RankRunner(0)) + self.index(InterpolationRunner(), 20) - self.index(RankRunner(self.maxrank)) + self.index(RankRunner(self.maxrank), 20) - def index(self, obj): + def index(self, obj, batch=1): """ Index a single rank or table. `obj` describes the SQL to use - for indexing. + for indexing. `batch` describes the number of objects that + should be processed with a single SQL statement """ log.warning("Starting {}".format(obj.name())) - cur = self.conn.cursor(name='main') - cur.execute(obj.sql_index_sectors()) - - total_tuples = 0 - for r in cur: - total_tuples += r[1] - log.debug("Total number of rows; {}".format(total_tuples)) + cur = self.conn.cursor() + cur.execute(obj.sql_count_objects()) - cur.scroll(0, mode='absolute') + total_tuples = cur.fetchone()[0] + log.debug("Total number of rows: {}".format(total_tuples)) - next_thread = self.find_free_thread() - done_tuples = 0 - rank_start_time = datetime.now() - - sector_sql = obj.sql_sector_places() - index_sql = obj.sql_index_place() - min_grouped_tuples = total_tuples - len(self.threads) * 1000 - - next_info = 100 if log.isEnabledFor(logging.INFO) else total_tuples + 1 - - for r in cur: - sector = r[0] + cur.close() - # Should we do the remaining ones together? - do_all = done_tuples > min_grouped_tuples + progress = ProgressLogger(obj.name(), total_tuples) - pcur = self.conn.cursor(name='places') + if total_tuples > 0: + cur = self.conn.cursor(name='places') + cur.execute(obj.sql_get_objects()) - if do_all: - pcur.execute(obj.sql_nosector_places()) - else: - pcur.execute(sector_sql, (sector, )) + next_thread = self.find_free_thread() + while True: + places = [p[0] for p in cur.fetchmany(batch)] + if len(places) == 0: + break - for place in pcur: - place_id = place[0] - log.debug("Processing place {}".format(place_id)) + log.debug("Processing places: {}".format(places)) thread = next(next_thread) - thread.perform(index_sql, (place_id,)) - done_tuples += 1 + thread.perform(obj.sql_index_place(places)) + progress.add(len(places)) - if done_tuples >= next_info: - now = datetime.now() - done_time = (now - rank_start_time).total_seconds() - tuples_per_sec = done_tuples / done_time - log.info("Done {} in {} @ {:.3f} per second - {} ETA (seconds): {:.2f}" - .format(done_tuples, int(done_time), - tuples_per_sec, obj.name(), - (total_tuples - done_tuples)/tuples_per_sec)) - next_info += int(tuples_per_sec) + cur.close() - pcur.close() + for t in self.threads: + t.wait() - if do_all: - break - - cur.close() - - for t in self.threads: - t.wait() - - rank_end_time = datetime.now() - diff_seconds = (rank_end_time-rank_start_time).total_seconds() - - log.warning("Done {}/{} in {} @ {:.3f} per second - FINISHED {}\n".format( - done_tuples, total_tuples, int(diff_seconds), - done_tuples/diff_seconds, obj.name())) + progress.done() def find_free_thread(self): """ Generator that returns the next connection that is free for sending a query. """ ready = self.threads + command_stat = 0 while True: for thread in ready: if thread.is_done(): + command_stat += 1 yield thread - ready, _, _ = select.select(self.threads, [], []) + # refresh the connections occasionaly to avoid potential + # memory leaks in Postgresql. + if command_stat > 100000: + for t in self.threads: + while not t.is_done(): + t.wait() + t.connect() + command_stat = 0 + ready = self.threads + else: + ready, _, _ = select.select(self.threads, [], []) - assert(False, "Unreachable code") + assert False, "Unreachable code" def nominatim_arg_parser(): @@ -292,6 +234,9 @@ def nominatim_arg_parser(): p.add_argument('-P', '--port', dest='port', action='store', help='PostgreSQL server port') + p.add_argument('-b', '--boundary-only', + dest='boundary_only', action='store_true', + help='Only index administrative boundaries (ignores min/maxrank).') p.add_argument('-r', '--minrank', dest='minrank', type=int, metavar='RANK', default=0, help='Minimum/starting rank.') @@ -319,4 +264,7 @@ if __name__ == '__main__': password = getpass.getpass("Database password: ") options.password = password - Indexer(options).run() + if options.boundary_only: + Indexer(options).index_boundaries() + else: + Indexer(options).index_by_rank()