Builds upon #37765 to support arbitrary connection counts in the transport.
(note: at this point the number of connections is determined at connection establishment - future work will be autotuning this)
Closes#38032
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/38032 from ctiller:tiefling-buffer c7520fd7a9
PiperOrigin-RevId: 698952890
Update the chaotic-good wire format with some learnings from the past year, and set up things for the next round of changes we'd like to make:
* Instead of a composite FRAGMENT frame, split out CLIENT_INITIAL_METADATA, CLIENT_END_OF_STREAM, MESSAGE, SERVER_INITIAL_METADATA, SERVER_TRAILING_METADATA as separate frame types - this eliminates a ton of complexity in the transport, and corresponds to how we used the wire format in practice anyway.
* Switch the frame payload for metadata, settings to be protobuf instead of HPACK - this eliminates the ordering requirements on interpreting these frames between streams, which I expect to open up some flexibility with head of line avoidance in the future. It's a heck of a lot easier to read and reason about the code. It's also easier to predict the size of the frame at encode time, which lets us treat metadata and payloads more uniformly in the protocol.
* Add a connection id field to our header, in preparation for allowing multiple data connections
* Allow payloads to be shipped on the control channel ('connection id 0') and use this for sending small messages
Closes#37765
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37765 from ctiller:tiefling 7b57f72367
PiperOrigin-RevId: 695766541
Follow up from #37917 to add `noexcept` to multiple Cython functions using `nogil` with a `void` return type.
Below are the performance hints that were encountered as part of the Cython translation which are solved by this PR:
The below performance hint still exists, and is not resolved.
This is because `noexcept` expects that the function doesn't raise an exception, or a raised exception is just displayed as a warning and not propagated. But `_poll` raises an `AssertionError` at `QUEUE_TIMEOUT`, and hence cannot use `noexcept` with `_poll`.
As [PR 37917](https://github.com/grpc/grpc/pull/37917) and this PR now solves the Cython Asyncio test timeouts caused by Cython upgrade, this PR also reverts the Bazel Cython downgrade PR #37884
### Testing for timeout
Tested using `bazel test -c dbg --runs_per_test=3000 --test_timeout=10 "//examples/python/auth:_auth_example_test"`
```
//examples/python/auth:_auth_example_test PASSED in 4.6s
Stats over 3000 runs: max = 4.6s, min = 2.6s, avg = 3.2s, dev = 0.2s
```
Closes#37922
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37922 from sreenithi:fix_bazel_cython_asyncio_timeout 2162cd28b1
PiperOrigin-RevId: 686524195
This PR adds templating for Python versions and updates the maximum supported Python version to 3.13. The following major changes related to templating are added:
- Minimum supported Python version and list of supported versions in `setup.py` are fetched using new template generated files called `python_version.py`
- Dockerfiles for the different Python Linux builds are now template generated.
- The "Supported Python Versions" section from READMEs of ancillary and main packages have been removed
Note: All the `python_version.py` files and Linux build `Dockerfiles` except `tools/dockerfile/grpc_artifact_python_linux_armv7/Dockerfile` in the PR are generated from the respective templates.
Further non-templated additions to add support for Python 3.13:
- install scripts and artifacts for windows, macos and linux are added manually. Later, these can be templated as well.
- updated cython bounds to 3.x
- updated twine version to solve [cgi module import error](https://github.com/pypa/twine/issues/1046)
- the twine update introduces a dependency on cryptography>=2.0. But the cryptography package doesn't support 32-bit Linux images and hence `twine check` has been disabled for x86 manylinux and x86 musllinux artifacts.
Closes#37643
PiperOrigin-RevId: 678954495
1. Added script to install all dependencies then run all unit tests for python grpcio.
Closes#37070
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37070 from sourabhsinghs:feature/developer-setup-script 954892f20a
PiperOrigin-RevId: 678718224
The following files have been moved:
- src/core/lib/avl/*
- src/core/lib/backoff/*
- src/core/lib/debug/event_log*
- src/core/lib/iomgr/gethostname*
- src/core/lib/iomgr/grpc_if_nametoindex*
- src/core/lib/matchers/*
- src/core/lib/uri/* (renamed from uri_parser.* to uri.*)
- src/core/lib/gprpp/* (existing src/core/util/time.cc was renamed to gpr_time.cc to avoid conflict)
Closes#36792
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36792 from markdroth:reorg_util d4e8996f48
PiperOrigin-RevId: 676947640
Two new benchmarks here-in.
Benchmark 1: `bm_picker`
------
Measures various load balancing policies pick performance. For now we cover `pick_first` and `weighted_round_robin` at 1, 10, 100, 1000, 10000, and 100000 backends.
Today's output:
```
------------------------------------------------------------------------------
Benchmark Time CPU Iterations
------------------------------------------------------------------------------
BM_Pick/pick_first/1 20.4 ns 20.4 ns 68285
BM_Pick/pick_first/10 20.6 ns 20.6 ns 68274
BM_Pick/pick_first/100 20.5 ns 20.5 ns 67817
BM_Pick/pick_first/1000 20.6 ns 20.6 ns 67347
BM_Pick/pick_first/10000 20.7 ns 20.7 ns 67317
BM_Pick/pick_first/100000 20.9 ns 20.9 ns 67385
BM_Pick/weighted_round_robin/1 54.7 ns 54.7 ns 26641
BM_Pick/weighted_round_robin/10 54.2 ns 54.2 ns 25828
BM_Pick/weighted_round_robin/100 55.2 ns 55.2 ns 26210
BM_Pick/weighted_round_robin/1000 54.1 ns 54.1 ns 25678
BM_Pick/weighted_round_robin/10000 77.3 ns 76.6 ns 15776
BM_Pick/weighted_round_robin/100000 148 ns 148 ns 9882
```
Benchmark 2: `bm_load_balanced_call_destination`
-----
This benchmark measures call performance when a call spine passes through a `LoadBalancedCallDestination`, and with `BM_LoadBalancedCallDestination` also the construction/destruction cost of this object.
We do not consider picker performance in this benchmark as it's separately covered by `bm_picker` above.
Today's output:
```
-----------------------------------------------------------------------------------------------------------------------------------------
Benchmark Time CPU Iterations
-----------------------------------------------------------------------------------------------------------------------------------------
BM_UnaryWithSpawnPerEnd<UnstartedCallDestinationFixture<LoadBalancedCallDestinationTraits>> 1255 ns 1255 ns 1076
BM_UnaryWithSpawnPerOp<UnstartedCallDestinationFixture<LoadBalancedCallDestinationTraits>> 1459 ns 1459 ns 939
BM_ClientToServerStreaming<UnstartedCallDestinationFixture<LoadBalancedCallDestinationTraits>> 209 ns 209 ns 6775
BM_LoadBalancedCallDestination 92.8 ns 92.8 ns 15063
```
Notes
------
There's some duplicated code between the benchmarks & tests -- this is ok -- as the tests evolve we'll likely want to add more checks to the fixtures, whereas as the benchmarks evolve we may well want to optimize the fixtures so that performance of the systems under test dominate more. That is, the duplicated code is expected to have different evolutionary tracks.
Closes#37052
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37052 from ctiller:moar-benchy 30c7072d87
PiperOrigin-RevId: 658181731
This setting has no utility in general open source, but is still useful in other environments. This PR ensures that there are no `debug` configurations when the default codegen CI runs. This simplifies the release process as well.
Closes#37277
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37277 from drfloob:gen-exp-no-dbg 6517fec6e4
PiperOrigin-RevId: 654928917
Change was created by the release automation script. See go/grpc-release.
Closes#37279
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37279 from drfloob:bump_dev_version_202407222027 4e6607411e
PiperOrigin-RevId: 654925894
Move event engine context to be an arena based context, and have party host arena directly.
Now `Party` can directly inject all context necessary without needing to call out to the derived type; this makes `Party` instantiable by itself (no need to inherit from it - though we'll still want to for `CallSpine` to simplify some arena lifetime management), meaning we can start to consider eliminating the base class `Activity` and merging these types.
Closes#37015
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37015 from ctiller:chaotic-party 7f44b37b5d
PiperOrigin-RevId: 646963003
Preparation for switching away from `grpc_channel_filter*` to identify channel filters.
Closes#36907
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36907 from ctiller:type-name e7ad4c67a2
PiperOrigin-RevId: 644483948
This change brings up the direct channel, and inproc promise based transports.
This work exposed a bug that was very difficult to fix with the current call_filters.cc implementation, so I've substantially revamped that - instead of having a pipe-like object per call element, we now have a big ol' combined state machine for the entire call. It's a touch more code, but substantially easier to reason about individual cases, so I much prefer this form (it's also a slight memory improvement: 12 bytes total to track call state, and 10 of those are wakeup bitmasks...).
Closes#36734
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36734 from ctiller:transport-refs-9 3e2a80b40d
PiperOrigin-RevId: 644034593
Change was created by the release automation script. See go/grpc-release.
Closes#36892
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36892 from XuanWang-Amos:bump_dev_version_202406112301 9b2898d716
PiperOrigin-RevId: 643027546
All TraceFlags are now configured in `src/core/lib/debug/trace_flags.yaml`. The format is:
```
my_flag:
default: false # the default value; default=false
description: Some Description
debug_only: false # debug_only flags only work in debug builds; default=false
internal: false # internal flags will not show up in documentation; default=false
```
To regenerate the trace flag source code, run `tools/codegen/core/gen_trace_flags.py` (requires mako). This script is also run when sanity checking.
This PR also adds two new features:
### Glob-based flag configuration
Trace flag configuration now supports `?` (single wildcard character) and `*` (one or more wildcard characters). For example, using `GRPC_TRACE='event_engine*'` will enable all flags that match that glob. It expands to:
* event_engine
* event_engine_client_channel_resolver
* event_engine_dns
* event_engine_endpoint
* event_engine_endpoint_data
* event_engine_poller
### A cleaner trace-logging macro in abseil logging format
If your goal is only to add log statements when the `fault_injection_filter` trace flag is enabled, you can use the macro:
```
GRPC_TRACE_LOG(fault_injection, INFO) << "Filtered:" << 42;
```
When the trace flag is enabled, the the log will show something like this:
```
I0000 00:00:1715733657.430042 16 file.cc:174] Filtered:42
```
----
Note: just like with the gpr_log to abseil logging conversion, the pre-existing trace logging usages can be replaced with the new tracing macro across multiple PRs.
Closes#36576
PiperOrigin-RevId: 641295215
Implement Python CSM observability.
Design: [go/grpc-python-opentelemetry](http://goto.google.com/grpc-python-opentelemetry)
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Closes#36557
PiperOrigin-RevId: 639073741
Introduce "Yodel" - a framework for testing things vaguely related to calls.
This is breaking up some work I did for transport test suites - we've got a nice way of spawning test-only promises and tracking them visually, and support for setting up an environment that can run as a test or a fuzzer. I'm making that piece a little more reusable, and then rebasing the transport test suite atop that infrastructure.
Closes#36635
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36635 from ctiller:transport-refs-6 843a9f4b7e
PiperOrigin-RevId: 637022756
Not the fastest implementation possible, but it's a log helper so I'm not particularly fussed either -- but a useful utility that we can iterate on later to help debugging.
Closes#36554
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36554 from ctiller:args 33b4802fcc
PiperOrigin-RevId: 632997320
Change was created by the release automation script. See go/grpc-release.
Closes#36544
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36544 from yashykt:bump_dev_version_202405061956 69ee5c869e
PiperOrigin-RevId: 631187829
Since we already finished v26.1 upgrade in https://github.com/grpc/grpc/pull/35796
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Closes#36230
PiperOrigin-RevId: 623960260
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Closes#36333
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36333 from yijiem:bump_dev_version_202404101721 0a7cc5b4b7
PiperOrigin-RevId: 623878150
Craig Tiller
Nathan Baulch
Sourabh Singh
Esun Kim
Marcel
Richard Belleville
Sreenithi Sridharan
Mark D. Roth
apolcyn
AJ Heller
Eugene Ostroukhov
Xuan Wang
Yash Tibrewal
gRPC Team Bot
Yijie Ma