20f032338f
Reworks the hash equivalence server to address performance issues that were encountered with the REST mechanism used previously, particularly during the heavy request load encountered during signature generation. Notable changes are: 1) The server protocol is no longer HTTP based. Instead, it uses a simpler JSON over a streaming protocol link. This protocol has much lower overhead than HTTP since it eliminates the HTTP headers. 2) The hash equivalence server can either bind to a TCP port, or a Unix domain socket. Unix domain sockets are more efficient for local communication, and so are preferred if the user enables hash equivalence only for the local build. The arguments to the 'bitbake-hashserve' command have been updated accordingly. 3) The value to which BB_HASHSERVE should be set to enable a local hash equivalence server is changed to "auto" instead of "localhost:0". The latter didn't make sense when the local server was using a Unix domain socket. 4) Clients are expected to keep a persistent connection to the server instead of creating a new connection each time a request is made for optimal performance. 5) Most of the client logic has been moved to the hashserve module in bitbake. This makes it easier to share the client code. 6) A new bitbake command has been added called 'bitbake-hashclient'. This command can be used to query a hash equivalence server, including fetching the statistics and running a performance stress test. 7) The table indexes in the SQLite database have been updated to optimize hash lookups. This change is backward compatible, as the database will delete the old indexes first if they exist. 8) The server has been reworked to use python async to maximize performance with persistently connected clients. This requires Python 3.5 or later. (Bitbake rev: 2124eec3a5830afe8e07ffb6f2a0df6a417ac973) Signed-off-by: Joshua Watt <JPEWhacker@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2.0 KiB
Executable File
#! /usr/bin/env python3
Copyright (C) 2018 Garmin Ltd.
SPDX-License-Identifier: GPL-2.0-only
import os import sys import logging import argparse import sqlite3
sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(file)), 'lib'))
import hashserv
VERSION = "1.0.0"
DEFAULT_BIND = 'unix://./hashserve.sock'
def main(): parser = argparse.ArgumentParser(description='Hash Equivalence Reference Server. Version=%s' % VERSION, epilog='''The bind address is the path to a unix domain socket if it is prefixed with "unix://". Otherwise, it is an IP address and port in form ADDRESS:PORT. To bind to all addresses, leave the ADDRESS empty, e.g. "--bind :8686". To bind to a specific IPv6 address, enclose the address in "[]", e.g. "--bind [::1]:8686"''' )
parser.add_argument('--bind', default=DEFAULT_BIND, help='Bind address (default "%(default)s")')
parser.add_argument('--database', default='./hashserv.db', help='Database file (default "%(default)s")')
parser.add_argument('--log', default='WARNING', help='Set logging level')
args = parser.parse_args()
logger = logging.getLogger('hashserv')
level = getattr(logging, args.log.upper(), None)
if not isinstance(level, int):
raise ValueError('Invalid log level: %s' % args.log)
logger.setLevel(level)
console = logging.StreamHandler()
console.setLevel(level)
logger.addHandler(console)
server = hashserv.create_server(args.bind, args.database)
server.serve_forever()
return 0
if name == 'main': try: ret = main() except Exception: ret = 1 import traceback traceback.print_exc() sys.exit(ret)