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Closes#36729
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36729 from yijiem:per-channel-stats-plugin 4786bed42f
PiperOrigin-RevId: 642030366
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
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
This gives grpc_endpoint the same destruction-is-shutdown semantic as
EventEngine::Endpoint, which will make the migration easier.
PiperOrigin-RevId: 639867616
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
Add a dynamic registration mechanism for a new kind of context: one that lives in an arena.
An upcoming set of changes will move all of the legacy context types into this mechanism.
It's likely we'll move other promise based context types to this mechanism also, until the only promise-based context type is `Arena`.
Closes#36773
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36773 from ctiller:transport-refs-7.8 e6892031ca
PiperOrigin-RevId: 638810722
Make `Arena` be a refcounted object.
Solves a bunch of issues: our stack right now needs a very complicated dance between transport and surface to destroy a call, but with this scheme we can just hold a ref to what we need in each place and everything works out.
Removes some `ifdef`'d out code that had been sitting dormant for a year or two also -- I'd left it in as a hedge against it being maybe a bad idea, but it looks like it's not needed.
Closes#36758
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36758 from ctiller:arena-counting d1b672fe30
PiperOrigin-RevId: 638767768
Implements https://github.com/grpc/proposal/pull/429
Currently, the behavior of `GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA` blocks more pings from being sent if we are sending too many pings without a data/header frame being sent as well. The original intention of this channel arg was to play nice with proxies that have restrictive settings when it comes to pings. This causes awkwardness when configuring keepalive pings for transports with long lived streams with sparse communication. In such a case, gRPC Core would stop sending keepalive pings since no data/header frame is being sent, resulting in a situation where we are unable to detect whether the transport is alive or not.
This change adds an experiment "max_pings_wo_data_throttle" to modify the behavior of `GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA` to throttle pings to a frequency of 1 minute instead of completely blocking pings when too many pings have been sent without data/header frames.
Closes#36374
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36374 from yashykt:ThrottlePings b5bd42a019
PiperOrigin-RevId: 638110795
This fixes a fairly embarrassing bug and lack of testing from #33234. Prior to this fix, attempting to use the "tls" creds type would always cause a crash.
@gtcooke94@matthewstevenson88 Note that the root cause of this bug was that when I wrote this code, I assumed that `grpc_tls_credentials_options` had a reasonable default for the cert verifier. But it turns out that it doesn't do that directly; instead, we are only imposing that default in [`CredentialOptionSanityCheck()`](621aa4e5ce/src/core/lib/security/credentials/tls/tls_credentials.cc (L85)), which is called only when we call [`grpc_tls_credentials_create()`](621aa4e5ce/src/core/lib/security/credentials/tls/tls_credentials.cc (L160)), not when we directly instantiate `TlsCredentials` as my code was doing. As part of the TlsCreds API cleanup you're working on, we should fix this so that callers get the right behavior even if they are internal callers that instantiate the TlsCreds object directly rather than calling the C-core API.
Closes#36726
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36726 from markdroth:xds_bootstrap_mtls_creds_fix dac2789e10
PiperOrigin-RevId: 637993734
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
Public Changes -
* Add a pkgconfig installer for `grpcpp_otel_plugin`
Example Changes -
* Add example of how to use the pkgconfig for `grpcpp_otel_plugin` with the existing OpenTelemetry example.
* Add another OpenTelemetry example that uses OTel's OStream exporter. This makes it easier to test the pkgconfig file for `grpcpp_otel_plugin` since the OStream exporter does not require any additional dependencies, as opposed to the Prometheus exporter.
Test changes -
* Modify `run_distrib_test_cmake_pkgconfig.sh` test to install opentelemetry and build the example with the OStream exporter.
Closes#36686
PiperOrigin-RevId: 636965475
[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#36701
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36701 from tanvi-jagtap:test_core_gpr_log 1d8c69e9c6
PiperOrigin-RevId: 636850577
[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#36703
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36703 from tanvi-jagtap:test_core_gpr_log_01 26c4307b08
PiperOrigin-RevId: 636801504
[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#36678
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36678 from tanvi-jagtap:test_cpp_gpr_log 81b8f4179f
PiperOrigin-RevId: 636410944
In a follow-up PR, we will use these helper APIs to add validation checks when creating TLS credentials objects.
Closes#36357
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36357 from matthewstevenson88:pem-util dca4f2e6c5
PiperOrigin-RevId: 636162540
[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#36677
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36677 from tanvi-jagtap:regex_test_end2end dfb803ebff
PiperOrigin-RevId: 635807701
Mark D. Roth
Nana Pang
Yijie Ma
Craig Tiller
AJ Heller
Tanvi Jagtap
Vishwanath Sastry
Hannah Shi
Yash Tibrewal
gRPC Team Bot
Tanvi Jagtap
Esun Kim
Matthew Stevenson