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Diffstat (limited to '')
| -rw-r--r-- | daemon/cache.test/clear.test.lua | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/daemon/cache.test/clear.test.lua b/daemon/cache.test/clear.test.lua new file mode 100644 index 0000000..e1f6914 --- /dev/null +++ b/daemon/cache.test/clear.test.lua @@ -0,0 +1,215 @@ +-- unload modules which are not related to this test +-- SPDX-License-Identifier: GPL-3.0-or-later + +if ta_signal_query then + modules.unload('ta_signal_query') +end +if priming then + modules.unload('priming') +end +if detect_time_skew then + modules.unload('detect_time_skew') +end + +-- test. domain is used by some tests, allow it +policy.add(policy.suffix(policy.PASS, {todname('test.')})) + +cache.size = 2*MB +-- log_level('debug') + +-- Self-checks on globals +assert(help() ~= nil) +assert(worker.id ~= nil) +-- Self-checks on facilities +assert(cache.stats() ~= nil) +assert(cache.backends() ~= nil) +assert(worker.stats() ~= nil) +assert(net.interfaces() ~= nil) +-- Self-checks on loaded stuff +assert(#modules.list() > 0) +-- Self-check timers +ev = event.recurrent(1 * sec, function () return 1 end) +event.cancel(ev) +ev = event.after(0, function () return 1 end) + + +-- Import fake root zone; avoid interference with configured keyfile_default. +trust_anchors.remove('.') +trust_anchors.add('. IN DS 48409 8 2 3D63A0C25BCE86621DE63636F11B35B908EFE8E9381E0E3E9DEFD89EA952C27D') + +local check_answer = require('test_utils').check_answer + +-- do not attempt to contact outside world, operate only on cache +net.ipv4 = false +net.ipv6 = false +-- do not listen, test is driven by config code +env.KRESD_NO_LISTEN = true + + +local function import_zone() + local import_res = require('ffi').C.zi_zone_import({ zone_file = 'testroot.zone' }) + assert(import_res == 0) + -- beware that import takes at least 100 ms + worker.sleep(0.2) -- zimport is delayed by 100 ms from function call + -- sanity checks - cache must be filled in + ok(cache.count() > 0, 'cache is not empty after import') + check_answer('root apex is in cache', + '.', kres.type.NS, kres.rcode.NOERROR) + check_answer('deep subdomain is in cache', + 'a.b.subtree1.', kres.type.AAAA, kres.rcode.NOERROR) + +end + +local function test_exact_match_qtype() + nok(cache.clear('a.b.subtree1.', true, kres.type.A)['chunk_limit'], + 'single qname+qtype can be cleared at once') + check_answer('exact match on qname+qtype must flush RR from cache', + 'a.b.subtree1.', kres.type.A, kres.rcode.SERVFAIL) + check_answer('exact match on qname+qtype must not affect other RRs on the same node', + 'a.b.subtree1.', kres.type.AAAA, kres.rcode.NOERROR) + check_answer('exact match on qname must not affect parent', + 'b.subtree1.', kres.type.A, kres.rcode.NOERROR) +end + +local function test_exact_match_qname() + res = cache.clear('a.b.SubTree1.') + is(res.count, 2, 'single qname can be cleared at once') + check_answer('exact match on qname must flush all RRs with the same owner from cache', + 'a.b.subtree1.', kres.type.AAAA, kres.rcode.SERVFAIL) + check_answer('exact match on qname must flush all RRs with the same owner from cache', + 'a.b.subtree1.', kres.type.A, kres.rcode.SERVFAIL) + check_answer('exact match on qname must flush all RRs with the same owner from cache', + 'a.b.subtree1.', kres.type.TXT, kres.rcode.SERVFAIL) + -- exact match for negative proofs is not implemented yet + --check_answer('exact match on qname must flush negative proofs for owner from cache', + -- 'a.b.subtree1.', kres.type.NULL, kres.rcode.SERVFAIL) + --check_answer('exact match on qname must not affect parent', + -- 'b.subtree1.', kres.type.A, kres.rcode.NOERROR) + -- same(cache.clear(), 0, 'full cache clear can be performed') + --check_answer('.', kres.type.NS, false) + +end + +local function test_subtree() + res = cache.clear('subtree1.') + nok(res.chunk_limit, + 'whole positive subtree must be flushed (does not include neg. proofs)') + ok(res.not_apex, + 'subtree clear below apex must be detected') + same(res.subtree, '.', 'detected apex must be returned') + check_answer('subtree variant must flush all RRs in subdomains from cache', + 'b.subtree1.', kres.type.A, kres.rcode.SERVFAIL) + check_answer('subtree variant must flush all RRs in subdomains from cache', + 'b.subtree1.', kres.type.TXT, kres.rcode.SERVFAIL) + check_answer('subtree variant must flush all RRs in subdomains from cache', + 'subtree1.', kres.type.TXT, kres.rcode.SERVFAIL) + check_answer('subtree variant must not affect parent', + '.', kres.type.NS, kres.rcode.NOERROR) + -- same(cache.clear(), 0, 'full cache clear can be performed') + --check_answer('.', kres.type.NS, false) + +end + +local function test_callback() + local test_name = '20r.subtree2.' + local test_exactname = true + local test_rrtype = nil + local test_chunksize = 1 + local test_prev_state = { works = true } + local function check_callback(name, exact_name, rr_type, chunk_size, callback, prev_state, errors) + is(errors.count, 1, 'callback received correct # of removed records') + is(test_name, name, 'callback received subtree name') + is(test_exactname, exact_name, 'callback received exact_name') + is(test_rrtype, rr_type, 'callback received rr_type') + is(test_chunksize, chunk_size, 'callback received chunk_size') + is(check_callback, callback, 'callback received reference to itself') + is(type(errors), 'table', 'callback received table of errors') + same(test_prev_state, prev_state, 'callback received previous state') + return 666 + end + same(cache.clear(test_name, test_exactname, test_rrtype, test_chunksize, check_callback, test_prev_state), + 666, 'first callback return value is passed to cache.clear() caller') + local cnt_before_wait = cache.count() + worker.sleep(0.2) + is(cnt_before_wait, cache.count(), 'custom callback can stop clearing') +end + +local function test_subtree_limit() -- default limit = 100 + res = cache.clear('subtree2.', false, nil) + ok(res.chunk_limit, + 'chunk_size limit must be respected') + is(res.count, 100, + 'chunk_size limit must match returned count') + + -- callbacks are running in background so we can now wait + -- and later verify that everything was removed + -- 200 RRs, 100 was removed in first call + -- so the rest should be removed in single invocation of callback + -- hopefully the machine is not too slow ... + worker.sleep(0.1) + res = cache.clear('subtree2.', false, nil) + is(res.count, 0, + 'previous calls + callbacks must have removed everything') +end + +local function test_apex() + check_answer('a negative proof is still present in cache', + 'aaaaa.b.subtree1.', kres.type.TXT, kres.rcode.NXDOMAIN) + + local prev_count = cache.count() + ok(prev_count > 0, 'previous subtree clearing did not remove everything') + res = cache.clear('.', false, nil, 10000) + is(res.count, prev_count, 'clear on root removed everything including proofs') + check_answer('exact match on qname must flush negative proofs for owner from cache', + 'a.b.subtree1.', kres.type.NULL, kres.rcode.SERVFAIL) +end + +local function test_root() + check_answer('root apex is still in cache', + '.', kres.type.NS, kres.rcode.NOERROR) + res = cache.clear('.', true) + check_answer('root apex is in no longer cache', + '.', kres.type.NS, kres.rcode.SERVFAIL) + check_answer('some other item is still in cache', + '16r.subtree2.', kres.type.A, kres.rcode.NOERROR) + + local prev_count = cache.count() + res = cache.clear('.') + is(res.count, prev_count, 'full clear reports correct number of entries') + is(cache.count(), 0, 'clearing root clears everything') +end + +local function test_complete_flush() + local prev_count = cache.count() + res = cache.clear() + is(res.count, prev_count, 'full clear reports correct number of entries') + is(cache.count(), 0, 'cache is empty after full clear') +end + +local function test_cache_used(lower, upper) + return function() + local usage = cache.stats().usage_percent + ok(usage >= lower and usage <= upper, + string.format('cache percentage usage %.1f is between <%d, %d>', usage, lower, upper)) + end +end + +return { + test_cache_used(0, 1), + import_zone, + test_cache_used(9, 11), + test_exact_match_qtype, + test_exact_match_qname, + test_callback, + import_zone, + test_subtree, + test_cache_used(9, 11), + test_subtree_limit, + test_cache_used(5, 8), + test_apex, + import_zone, + test_root, + import_zone, + test_complete_flush, + test_cache_used(0, 1), +} |