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3b559bb16d
The -r/--readonly argument is added to the bitbake-hashserv app. If this argument is given then clients may only perform read operations against the server. The read-only mode is implemented by simply not installing handlers for write operations, this keeps the permission model simple and reduces the risk of accidentally allowing write operations. As a sqlite database can be safely opened by multiple processes in parallel, it's possible to start two hashserv instances against a single database if you wish to export both a read-only port and a read-write port. (Bitbake rev: 492bb02eb0e071c792407ac3113f92492da1a9cc) Signed-off-by: Paul Barker <pbarker@konsulko.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
134 lines
3.6 KiB
Python
134 lines
3.6 KiB
Python
# Copyright (C) 2018-2019 Garmin Ltd.
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#
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# SPDX-License-Identifier: GPL-2.0-only
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#
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import asyncio
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from contextlib import closing
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import re
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import sqlite3
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import itertools
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import json
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UNIX_PREFIX = "unix://"
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ADDR_TYPE_UNIX = 0
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ADDR_TYPE_TCP = 1
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# The Python async server defaults to a 64K receive buffer, so we hardcode our
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# maximum chunk size. It would be better if the client and server reported to
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# each other what the maximum chunk sizes were, but that will slow down the
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# connection setup with a round trip delay so I'd rather not do that unless it
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# is necessary
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DEFAULT_MAX_CHUNK = 32 * 1024
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TABLE_DEFINITION = (
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("method", "TEXT NOT NULL"),
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("outhash", "TEXT NOT NULL"),
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("taskhash", "TEXT NOT NULL"),
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("unihash", "TEXT NOT NULL"),
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("created", "DATETIME"),
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# Optional fields
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("owner", "TEXT"),
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("PN", "TEXT"),
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("PV", "TEXT"),
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("PR", "TEXT"),
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("task", "TEXT"),
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("outhash_siginfo", "TEXT"),
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)
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TABLE_COLUMNS = tuple(name for name, _ in TABLE_DEFINITION)
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def setup_database(database, sync=True):
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db = sqlite3.connect(database)
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db.row_factory = sqlite3.Row
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with closing(db.cursor()) as cursor:
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS tasks_v2 (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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%s
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UNIQUE(method, outhash, taskhash)
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)
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''' % " ".join("%s %s," % (name, typ) for name, typ in TABLE_DEFINITION))
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cursor.execute('PRAGMA journal_mode = WAL')
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cursor.execute('PRAGMA synchronous = %s' % ('NORMAL' if sync else 'OFF'))
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# Drop old indexes
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cursor.execute('DROP INDEX IF EXISTS taskhash_lookup')
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cursor.execute('DROP INDEX IF EXISTS outhash_lookup')
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# Create new indexes
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cursor.execute('CREATE INDEX IF NOT EXISTS taskhash_lookup_v2 ON tasks_v2 (method, taskhash, created)')
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cursor.execute('CREATE INDEX IF NOT EXISTS outhash_lookup_v2 ON tasks_v2 (method, outhash)')
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return db
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def parse_address(addr):
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if addr.startswith(UNIX_PREFIX):
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return (ADDR_TYPE_UNIX, (addr[len(UNIX_PREFIX):],))
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else:
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m = re.match(r'\[(?P<host>[^\]]*)\]:(?P<port>\d+)$', addr)
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if m is not None:
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host = m.group('host')
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port = m.group('port')
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else:
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host, port = addr.split(':')
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return (ADDR_TYPE_TCP, (host, int(port)))
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def chunkify(msg, max_chunk):
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if len(msg) < max_chunk - 1:
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yield ''.join((msg, "\n"))
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else:
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yield ''.join((json.dumps({
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'chunk-stream': None
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}), "\n"))
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args = [iter(msg)] * (max_chunk - 1)
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for m in map(''.join, itertools.zip_longest(*args, fillvalue='')):
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yield ''.join(itertools.chain(m, "\n"))
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yield "\n"
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def create_server(addr, dbname, *, sync=True, upstream=None, read_only=False):
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from . import server
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db = setup_database(dbname, sync=sync)
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s = server.Server(db, upstream=upstream, read_only=read_only)
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(typ, a) = parse_address(addr)
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if typ == ADDR_TYPE_UNIX:
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s.start_unix_server(*a)
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else:
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s.start_tcp_server(*a)
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return s
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def create_client(addr):
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from . import client
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c = client.Client()
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(typ, a) = parse_address(addr)
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if typ == ADDR_TYPE_UNIX:
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c.connect_unix(*a)
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else:
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c.connect_tcp(*a)
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return c
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async def create_async_client(addr):
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from . import client
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c = client.AsyncClient()
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(typ, a) = parse_address(addr)
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if typ == ADDR_TYPE_UNIX:
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await c.connect_unix(*a)
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else:
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await c.connect_tcp(*a)
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return c
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