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Closes#35306
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35306 from yijiem:dns-empty-hostname 9c7f67c27a
PiperOrigin-RevId: 591028370
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Closes#35153
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35153 from yijiem:native_dns_resolver a4107f7d81
PiperOrigin-RevId: 588543137
ChannelArgs shared_ptr only supports types that extend `enable_shared_from_this`. `args.SetObject<shared_ptr<X>>(x)` with a non-comforming type X will now fail with something like:
```
./src/core/lib/channel/channel_args.h:453:12: error: no matching member function for call to 'Set'
return Set(ChannelArgNameTraits<T>::ChannelArgName(), std::move(p));
^~~
test/core/channel/channel_args_test.cc:352:32: note: in instantiation of function template specialization 'grpc_core::ChannelArgs::SetObject<X>' requested here
grpc_core::ChannelArgs b = a.SetObject(x);
^
..
```
Closes#35008
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35008 from drfloob:channel-args-cant-set-unsupported-shared-ptr-type dc93f27ac7
PiperOrigin-RevId: 586766674
Design is documented at
[go/windows-dns-resolver-issue](http://go/windows-dns-resolver-issue)
(note that the design doc is slightly outdated regarding the shared
ownership model of the virtual socket that was implemented in
13bd2b404e).
Passed `//test/cpp/naming:resolver_component_tests_runner_invoker` and
`//test/cpp/naming:cancel_ares_query_test`:
```
C:\Users\yijiem\projects\grpc>bazel --output_base=C:\bazel6 test --dynamic_mode=off --verbose_failures --test_env=GRPC_EXPERIMENTS=event_engine_dns --test_env=GRPC_VERBOSITY=debug --test_env=GRPC_TRACE=cares_resolver --enable_runfiles=yes --nocache_test_results //test/cpp/naming:resolver_component_tests_runner_invoker
INFO: Analyzed target //test/cpp/naming:resolver_component_tests_runner_invoker (1 packages loaded, 8 targets configured).
INFO: Found 1 test target...
INFO: From Compiling src/core/lib/event_engine/windows/windows_engine.cc:
C:\bazel6\execroot\com_github_grpc_grpc\src/core/lib/channel/channel_args.h(287): warning C4312: 'reinterpret_cast': conversion from 'int' to 'void *' of greater size
Target //test/cpp/naming:resolver_component_tests_runner_invoker up-to-date:
bazel-bin/test/cpp/naming/resolver_component_tests_runner_invoker.exe
INFO: Elapsed time: 230.374s, Critical Path: 228.54s
INFO: 9 processes: 2 internal, 7 local.
INFO: Build completed successfully, 9 total actions
//test/cpp/naming:resolver_component_tests_runner_invoker PASSED in 221.2s
Executed 1 out of 1 test: 1 test passes.
```
```
C:\Users\yijiem\projects\grpc>bazel --output_base=C:\bazel6 test --dynamic_mode=off --verbose_failures --test_env=GRPC_EXPERIMENTS=event_engine_dns --test_env=GRPC_VERBOSITY=debug --test_env=GRPC_TRACE=cares_resolver --enable_runfiles=yes --nocache_test_results //test/cpp/naming:cancel_ares_query_test
INFO: Analyzed target //test/cpp/naming:cancel_ares_query_test (0 packages loaded, 0 targets configured).
INFO: Found 1 test target...
Target //test/cpp/naming:cancel_ares_query_test up-to-date:
bazel-bin/test/cpp/naming/cancel_ares_query_test.exe
INFO: Elapsed time: 49.656s, Critical Path: 48.00s
INFO: 6 processes: 2 internal, 4 local.
INFO: Build completed successfully, 6 total actions
//test/cpp/naming:cancel_ares_query_test PASSED in 43.0s
Executed 1 out of 1 test: 1 test passes.
```
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---------
Co-authored-by: Bradley Hess <bdhess@google.com>
Co-authored-by: AJ Heller <hork@google.com>
This fixes a bug which could happen if multiple WorkStealingThreadPools
existed (wstpA and wstpB), and a thread in wstpA called
`wstpB->Run(closure)`. Previously, this would have scheduled the closure
on the current wstpA thread worker's local queue.
`bm_thread_pool` results look unchanged on RBE.
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Fix b/304114403
- adds a new experimental tracer useful for diagnosing ping timeout
failures in unit tests
- adds a pair of experimental tracers for fuzzing event engine
- fix the behavior of FuzzingEventEngine so that a RunAfter(0, ...) runs
in the same tick
- up the rate of sends (reduce the send delay) so we guarantee to be
able to send 200kb/sec in fuzzed e2e unit tests
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
The `TickForDuration()` method was using `grpc_core::Timestamp::Now()`
to get the current time, but that was not in sync with the `now_` value
inside the Fuzzing EE itself, with the result that after two subsequent
250ms increments, timers were not being properly fired. I've added a
test that demonstrates this failure without the fix.
If the client calls LookupHostname again within the on_resolve callback,
it re-acquires the `request_mu_` before releasing it which results in
deadlock.
With this PR it extracts the request and releases the lock before
calling on_resolve callback so it won't deadlock any more.
This has been stable for a bit, everywhere that the EventEngine is
enabled. Going forward, I think the event_engine_{client|listener}
experiments can probably be used to regulate thread-pool-specific
issues.
---------
Co-authored-by: drfloob <drfloob@users.noreply.github.com>
Proposed alternative to https://github.com/grpc/grpc/pull/34024.
This version has a simpler, faster busy-count implementation based on a
sharded set of atomic counts: fast increment/decrement operations,
relatively slower summation of total counts (which need to happen much
less frequently).
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Implement DNS using dns service for iOS.
Current limitation:
1. Using a custom name server is not supported.
2. Only supports `LookupHostname`. `LookupSRV` and `LookupTXT` are not
implemented.
3. Not tested with single stack (ipv4 or ipv6) environment
4. ~Not tested with multiple ip records per stack~ manually tested with
wsj.com
5. Not tested with multiple interface environment
Reverts grpc/grpc#33819
Verified that it passed these jobs:
`grpc/core/master/linux/grpc_basictests_c_cpp_dbg`
`grpc/core/master/linux/grpc_basictests_c_cpp_opt`
`grpc/core/master/linux/grpc_portability`
Why: Cleanup for chttp2_transport ahead of promise conversion - lots of
logic has become interleaved throughout chttp2, so some effort to
isolate logic out is warranted ahead of that conversion.
What: Split configuration and policy tracking for each of ping rate
throttling and abuse detection into their own modules. Add tests for
them.
Incidentally: Split channel args into their own header so that we can
split the policy stuff into separate build targets.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
Those tests are failing on CIs which do not have twisted installed. Skip
them for now and will fix the docker images next.
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This PR implements a c-ares based DNS resolver for EventEngine with the
reference from the original
[grpc_ares_wrapper.h](../blob/master/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h).
The PosixEventEngine DNSResolver is implemented on top of that. Tests
which use the client channel resolver API
([resolver.h](../blob/master/src/core/lib/resolver/resolver.h#L54)) are
ported, namely the
[resolver_component_test.cc](../blob/master/test/cpp/naming/resolver_component_test.cc)
and the
[cancel_ares_query_test.cc](../blob/master/test/cpp/naming/cancel_ares_query_test.cc).
The WindowsEventEngine DNSResolver will use the same EventEngine's
grpc_ares_wrapper and will be worked on next.
The
[resolve_address_test.cc](https://github.com/grpc/grpc/blob/master/test/core/iomgr/resolve_address_test.cc)
which uses the iomgr
[DNSResolver](../blob/master/src/core/lib/iomgr/resolve_address.h#L44)
API has been ported to EventEngine's dns_test.cc. That leaves only 2
tests which use iomgr's API, notably the
[dns_resolver_cooldown_test.cc](../blob/master/test/core/client_channel/resolvers/dns_resolver_cooldown_test.cc)
and the
[goaway_server_test.cc](../blob/master/test/core/end2end/goaway_server_test.cc)
which probably need to be restructured to use EventEngine DNSResolver
(for one thing they override the original grpc_ares_wrapper's free
functions). I will try to tackle these in the next step.
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Based on the discussion at:
595a75cc5d..e3b402a8fa (r1244325752)
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This change simplifies `EventEngine::DNSResolver`'s API based on the
proposal:
[go/event-engine-dns-resolver-api-changes](http://go/event-engine-dns-resolver-api-changes).
Note that this API change + the implementation described in
[go/event-engine-dns-resolver-implementation](http://go/event-engine-dns-resolver-implementation)
has already been tested against our main test suites and are passing
them.
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We want writes to participate in event re-ordering, but it's unlikely
that we can sustain one byte per 500ms on all tests and keep them
passing (which is the degenerate case right now).
Tune write delays down to 50ms for the moment, though I expect we'll
want to talk about going lower.
Fix fuzzer found bug b/286716972
Follows up on https://github.com/grpc/grpc/pull/33266 but gets the edge
case right of when there's a read queued before the peer closes - in
that case we weren't waking up the read.
Revert "Revert "[core] Add support for vsock transport"
(https://github.com/grpc/grpc/pull/33276)"
This reverts commit
c5ade3011a.
And fix the issue which broke the python build.
@markdroth@drfloob please review this PR. Thank you very much.
---------
Co-authored-by: AJ Heller <hork@google.com>
Reverts grpc/grpc#33223. Breaks internal build.
```
work_stealing_thread_pool.cc:180:27: error: format specifies type 'double' but the argument has type 'gpr_cycle_counter' (aka 'long') [-Werror,-Wformat]
```
This is another attempt to add support for vsock in grpc since previous
PRs(#24551, #21745) all closed without merging.
The VSOCK address family facilitates communication between
virtual machines and the host they are running on.
This patch will introduce new scheme: [vsock:cid:port] to
support VSOCK address family.
Fixes#32738.
---------
Signed-off-by: Yadong Qi <yadong.qi@intel.com>
Co-authored-by: AJ Heller <hork@google.com>
Co-authored-by: YadongQi <YadongQi@users.noreply.github.com>
This test mode tries to create threads wherever it legally can to
maximize the chances of TSAN finding errors in our codebase.
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---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
Add a new binary that runs all core end2end tests in fuzzing mode.
In this mode FuzzingEventEngine is substituted for the default event
engine. This means that time is simulated, as is IO. The FEE gets
control of callback delays also.
In our tests the `Step()` function becomes, instead of a single call to
`completion_queue_next`, a series of calls to that function and
`FuzzingEventEngine::Tick`, driving forward the event loop until
progress can be made.
PR guide:
---
**New binaries**
`core_end2end_test_fuzzer` - the new fuzzer itself
`seed_end2end_corpus` - a tool that produces an interesting seed corpus
**Config changes for safe fuzzing**
The implementation tries to use the config fuzzing work we've previously
deployed in api_fuzzer to fuzz across experiments. Since some
experiments are far too experimental to be safe in such fuzzing (and
this will always be the case):
- a new flag is added to experiments to opt-out of this fuzzing
- a new hook is added to the config system to allow variables to
re-write their inputs before setting them during the fuzz
**Event manager/IO changes**
Changes are made to the event engine shims so that tcp_server_posix can
run with a non-FD carrying EventEngine. These are in my mind a bit
clunky, but they work and they're in code that we expect to delete in
the medium term, so I think overall the approach is good.
**Changes to time**
A small tweak is made to fix a bug initializing time for fuzzers in
time.cc - we were previously failing to initialize
`g_process_epoch_cycles`
**Changes to `Crash`**
A version that prints to stdio is added so that we can reliably print a
crash from the fuzzer.
**Changes to CqVerifier**
Hooks are added to allow the top level loop to hook the verification
functions with a function that steps time between CQ polls.
**Changes to end2end fixtures**
State machinery moves from the fixture to the test infra, to keep the
customizations for fuzzing or not in one place. This means that fixtures
are now just client/server factories, which is overall nice.
It did necessitate moving some bespoke machinery into
h2_ssl_cert_test.cc - this file is beginning to be problematic in
borrowing parts but not all of the e2e test machinery. Some future PR
needs to solve this.
A cq arg is added to the Make functions since the cq is now owned by the
test and not the fixture.
**Changes to test registration**
`TEST_P` is replaced by `CORE_END2END_TEST` and our own test registry is
used as a first depot for test information.
The gtest version of these tests: queries that registry to manually
register tests with gtest. This ultimately changes the name of our tests
again (I think for the last time) - the new names are shorter and more
readable, so I don't count this as a regression.
The fuzzer version of these tests: constructs a database of fuzzable
tests that it can consult to look up a particular suite/test/config
combination specified by the fuzzer to fuzz against. This gives us a
single fuzzer that can test all 3k-ish fuzzing ready tests and cross
polinate configuration between them.
**Changes to test config**
The zero size registry stuff was causing some problems with the event
engine feature macros, so instead I've removed those and used GTEST_SKIP
in the problematic tests. I think that's the approach we move towards in
the future.
**Which tests are included**
Configs that are compatible - those that do not do fd manipulation
directly (these are incompatible with FuzzingEventEngine), and those
that do not join threads on their shutdown path (as these are
incompatible with our cq wait methodology). Each we can talk about in
the future - fd manipulation would be a significant expansion of
FuzzingEventEngine, and is probably not worth it, however many uses of
background threads now should probably evolve to be EventEngine::Run
calls in the future, and then would be trivially enabled in the fuzzers.
Some tests currently fail in the fuzzing environment, a
`SKIP_IF_FUZZING` macro is used for these few to disable them if in the
fuzzing environment. We'll burn these down in the future.
**Changes to fuzzing_event_engine**
Changes are made to time: an exponential sweep forward is used now -
this catches small time precision things early, but makes decade long
timers (we have them) able to be used right now. In the future we'll
just skip time forward to the next scheduled timer, but that approach
doesn't yet work due to legacy timer system interactions.
Changes to port assignment: we ensure that ports are legal numbers
before assigning them via `grpc_pick_port_or_die`.
A race condition between time checking and io is fixed.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
Yijie Ma
Vignesh Babu
AJ Heller
Craig Tiller
Mark D. Roth
Hannah Shi
Yousuk Seung
Mario Jones Vimal
Yadong