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
Use the latest golang base image for Go interop tests. Presently the latest image points to Go 1.22.
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## Commands run
To render the Dockerfile from its template
```sh
$ tools/buildgen/generate_projects.sh
```
To build and upload the base docker image.
```sh
$ tools/dockerfile/push_testing_images.sh
```
To build and upload the interop docker image for grpc-go 1.64.0
```sh
$ tools/interop_matrix/create_matrix_images.py --git_checkout --release=v1.64.0 --upload_images --language go
```
To verify the image is uploaded
```sh
$ gcloud container images list-tags gcr.io/grpc-testing/grpc_interop_go1.x
DIGEST TAGS TIMESTAMP
b36be4961ec4 infrastructure-public-image-v1.64.0,v1.64.0 2024-06-03T22:26:48
```
Verify the backward compatability tests pass
```sh
$ export docker_image=gcr.io/grpc-testing/grpc_interop_go1.x:v1.64.0
$ tools/interop_matrix/testcases/go__master
Testing gcr.io/grpc-testing/grpc_interop_go1.x:v1.64.0
```
Fixes: https://github.com/grpc/grpc/issues/36060Closes#36755
PiperOrigin-RevId: 641272572
[grpc][Gpr_To_Absl_Logging]
1. Supporting the legacy GRPC_VERBOSITY environment variable in the new absl logging implementation.
2. Adding a new way to disable VLOG logging.
3. Documenting the recommendations clearly.
4. Editing the init code.
Additional Context :
Check function gpr_default_log() for more context
https://github.com/search?q=repo%3Agrpc%2Fgrpc%20gpr_default_log&type=codeCloses#36798
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36798 from tanvi-jagtap:grpc_verbosity_flag_support ab0d600849
PiperOrigin-RevId: 641092851
This task was parallelized into 16 sub-tasks, but 32 cores are available. Let's see if this speeds up CI, the clang-tidy job usually takes about 30m to 40m.
Closes#36838
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36838 from drfloob:tidy-32 81edd68348
PiperOrigin-RevId: 641014003
Usage: `bazel build --config=clang-cl --build_tag_filters=-no_windows :all`
The highlight, for me anyway: thread safety annotation checking can now be done on Windows-only code.
clang-cl's interpretation of `-Wall` differs from that of clang on linux. This PR uses the set of warnings enabled on linux, and whittles down the list until all builds pass. I left comments in `copts.bzl` describing the warnings, many of which can be removed with targeted code cleanups.
Closes#36831
PiperOrigin-RevId: 641009783
Noticed this feature was missing from the list, so I added it.
@murgatroid99 - is this supported in Node? Let me know what version and I'll include it.
Closes#36714
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36714 from dfawley:a53 a1bb3605d4
PiperOrigin-RevId: 640982395
We changed the way flag was passed in this PR: https://github.com/grpc/psm-interop/pull/94
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Closes#36827
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36827 from XuanWang-Amos:csm_fix_interop a2c2c47f30
PiperOrigin-RevId: 640908453
[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging GPR_ASSERT
Replacing GPR_ASSERT with absl CHECK.
These changes have been made using string replacement and regex.
Will not be replacing all instances of CHECK with CHECK_EQ , CHECK_NE etc because there are too many callsites. Only ones which are doable using very simple regex with least chance of failure will be replaced.
Given that we have 5000+ instances of GPR_ASSERT to edit, Doing it manually is too much work for both the author and reviewer.
Closes#36816
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36816 from tanvi-jagtap:gpr_assert_removal 9db548beb0
PiperOrigin-RevId: 640731171
It's still possible to define GRPC_IOS_EVENT_ENGINE_CLIENT=0 to disable event engine for iOS.
Closes#36785
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36785 from HannahShiSFB:default-to-event-engine-in-ios 441fe552a6
PiperOrigin-RevId: 640716651
All clang docker images here are based on Debian 11 (Bullseye) but now we're moving to Debian 12 (Bookworm) primarily to use the recent versions of Cmake >= 3.20 to use CXX_STANDARD=23 for some tests ([doc](https://cmake.org/cmake/help/latest/prop_tgt/CXX_STANDARD.html))
Closes#36810
PiperOrigin-RevId: 640688681
This gives grpc_endpoint the same destruction-is-shutdown semantic as
EventEngine::Endpoint, which will make the migration easier.
PiperOrigin-RevId: 639867616
[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log
In this CL we are migrating from gRPCs own gpr logging mechanism to absl logging mechanism. The intention is to deprecate gpr_log in the future.
We have the following mapping
1. gpr_log(GPR_INFO,...) -> LOG(INFO)
2. gpr_log(GPR_ERROR,...) -> LOG(ERROR)
3. gpr_log(GPR_DEBUG,...) -> VLOG(2)
Reviewers need to check :
1. If the above mapping is correct.
2. The content of the log is as before.
gpr_log format strings did not use string_view or std::string . absl LOG accepts these. So there will be some elimination of string_view and std::string related conversions. This is expected.
Closes#36713
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36713 from tanvi-jagtap:src_core_lib_misc_gpr_log 0a36bebcbc
PiperOrigin-RevId: 639729711
Also rename the class from `MetadataQuery` to `GcpMetadataQuery`.
Closes#36789
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36789 from markdroth:reorg_gcp_metadata_query d2b84f46be
PiperOrigin-RevId: 639256546
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Closes#36791
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36791 from ctiller:san 692d74bffa
PiperOrigin-RevId: 639184328
The following attributes were completely unused:
- kOffset
- kIndex
- kSize
- kFilename
- kKey
- kValue
The following attributes were added but never programmatically accessed, and I've moved them into the status messages themselves, which is another step toward #22883:
- kErrorNo
- kTsiCode
- kWsaError
- kHttpStatus
- kOsError
- kSyscall
- kTargetAddress
- kRawBytes
- kTsiError
Closes#36523
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36523 from markdroth:grpc_error_attribute_cleanup b289c399fe
PiperOrigin-RevId: 639147583
Related to #36157
This is only focused on one binding so it is validated progressively
Closes#36262
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36262 from mmorel-35:externalprotocol_compiler f00cce8728
PiperOrigin-RevId: 639101071
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
AJ Heller
Tanvi Jagtap
Craig Tiller
Arjan Singh Bal
Eugene Ostroukhov
Doug Fawley
John Cormie
Xuan Wang
Vishwanath Sastry
Hannah Shi
Esun Kim
Yash Tibrewal
Amy Huang
Nana Pang
Mark D. Roth
Matthieu MOREL