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f20a612ae7
Add system test which check the behavior of `rndc dumpdb -cache` as well as the preservation of the delegation cache on server reload.
116 lines
3.5 KiB
Python
116 lines
3.5 KiB
Python
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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#
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# SPDX-License-Identifier: MPL-2.0
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, you can obtain one at https://mozilla.org/MPL/2.0/.
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#
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# See the COPYRIGHT file distributed with this work for additional
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# information regarding copyright ownership.
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from re import compile as Re
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import time
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import isctest
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DUMP_FILE_NAME = "ns2/named_dump.db"
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def warmup_cache(ns):
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# Let's flush all caches first so we're sure the query will fully run into the resolver.
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flush_caches(ns, "flush", "", "flushing caches in all views succeeded")
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msg = isctest.query.create("gee.foo.bar.com.", "A")
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res = isctest.query.udp(msg, ns.ip)
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isctest.check.noerror(res)
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msg = isctest.query.create("whatever.lame-and-expired-soon.bar.com.", "A")
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# This will fail, we don't care, this is just to have the entry in the cache
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isctest.query.udp(msg, ns.ip)
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assert len(res.answer) == 1
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def check_cache_expired(ns):
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time.sleep(2)
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with ns.watch_log_from_here() as watcher:
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ns.rndc("dumpdb -expired")
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watcher.wait_for_line("dumpdb complete")
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with isctest.log.WatchLogFromStart(DUMP_FILE_NAME) as watcher:
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patterns = [
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Re("lame-and-expired-soon.bar.com. 0 DELEG server-name=ns.somehost.com."),
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Re("foo.bar.com. 99999[5-9] DELEG server-name=ns.somehost.com."),
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]
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watcher.wait_for_all(patterns)
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def check_cache(ns, hit):
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with ns.watch_log_from_here() as watcher:
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ns.rndc("dumpdb -deleg")
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watcher.wait_for_line("dumpdb complete")
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with isctest.log.WatchLogFromStart(DUMP_FILE_NAME) as watcher:
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if hit:
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pattern = Re("foo.bar.com. 99999[5-9] DELEG server-name=ns.somehost.com.")
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watcher.wait_for_line(pattern)
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else:
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seq = ["; Delegation cache", ";", ";", "; Start view _bind"]
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watcher.wait_for_sequence(seq)
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def reload_server(ns):
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with ns.watch_log_from_here() as watcher:
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ns.rndc("reload")
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watcher.wait_for_line("running")
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with ns.watch_log_from_here() as watcher:
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ns.rndc("reconfig")
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watcher.wait_for_line("running")
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def flush_caches(ns, flushcmd, flusharg, confirm):
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with ns.watch_log_from_here() as watcher:
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ns.rndc(f"{flushcmd} {flusharg}")
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watcher.wait_for_line(confirm)
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def test_cacheclean_deleg(ns2):
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# Make sure the delegation cache has foo.bar.com.
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warmup_cache(ns2)
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# Flushing the cache
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check_cache(ns2, True)
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# Reloading the server keeps the cache hot
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reload_server(ns2)
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# The cache is still hot
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check_cache(ns2, True)
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# Flush the cache, and its now cold
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flush_caches(ns2, "flush", "", "flushing caches in all views succeeded")
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check_cache(ns2, False)
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# Flush just the name foo.bar.com.
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warmup_cache(ns2)
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check_cache(ns2, True)
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flush_caches(
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ns2,
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"flushname",
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"foo.bar.com.",
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"flushing name 'foo.bar.com.' in delegation cache for all views succeeded",
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)
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check_cache(ns2, False)
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# Flush the whole .com. tree (need to flush
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warmup_cache(ns2)
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check_cache(ns2, True)
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flush_caches(
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ns2,
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"flushtree",
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"com.",
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"flushing tree 'com.' in DNS cache for all views succeeded",
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)
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check_cache(ns2, False)
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# Check -expired
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warmup_cache(ns2)
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check_cache(ns2, True)
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check_cache_expired(ns2)
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