This adds functionality that is intended to be used for the new GcpServiceAccountIdentityCallCredentials implementation, as per gRFC A83 (https://github.com/grpc/proposal/pull/438). However, it is also a useful improvement for all token-fetching call credentials types, so I am adding it to the base class.
Closes#37531
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37531 from markdroth:token_fetcher_call_creds_prefetch_and_backoff 0fcdb48465
PiperOrigin-RevId: 666809903
Previously, `grpc_oauth2_token_fetcher_credentials` provided functionality for on-demand token-fetching, but it was integrated into the oauth2 code, so it was not possible to use that same code for on-demand fetching of (e.g.) JWT tokens. This PR splits that class into two parts:
1. A base `TokenFetcherCredentials` class that provides a framework for on-demand fetching of any arbitrary type of auth token.
2. An `Oauth2TokenFetcherCredentials` subclass that derives from `TokenFetcherCredentials` and provides handling for oauth2 tokens.
The `grpc_compute_engine_token_fetcher_credentials`, `StsTokenFetcherCredentials`, and `grpc_google_refresh_token_credentials` classes that previously derived from `grpc_oauth2_token_fetcher_credentials` now derive from `Oauth2TokenFetcherCredentials` instead, so there's not much change to those classes (other than a cleaner interface with the base class functionality).
The `ExternalAccountCredentials` class and its subclasses got more extensive changes here. Previously, this class inheritted from `grpc_oauth2_token_fetcher_credentials` and fooled the base class into thinking that it directly fetched the oauth2 token, when in fact it actually performed a number of steps to gather data and then constructed a synthetic HTTP response to pass back to the base class. I have changed this to instead derive directly from `TokenFetcherCredentials` to provide a much cleaner interface with the parent class.
In addition, I have changed `grpc_call_credentials` from `RefCounted<>` to `DualRefCounted<>` to provide a clean way to shut down any in-flight token fetch when the credentials are unreffed.
This PR paves the way for subsequent work that will allow implementing an on-demand JWT token fetcher call credential, as part of gRFC A83 (https://github.com/grpc/proposal/pull/438).
Closes#37510
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37510 from markdroth:token_fetcher_call_creds_refactor 3bd398a762
PiperOrigin-RevId: 666547985
Prior to this PR, the host and path were passed to the override functions, but the query params were unavailable to them. I have replaced the separate `host` and `path` parameters with a single parameter that passes the URI in as a const reference, which provides access to the query params.
While I was at it, I also changed the PUT and POST override methods to pass in the body as a string_view, which is more ergonomic for tests.
Closes#37540
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37540 from markdroth:httpcli_override_uri 902b0d2097
PiperOrigin-RevId: 665950188
Extend Fuzzing timeouts to 1 year since the fuzzing EE caps delays passed to RunAfter to 1 year. This will prevent pre-mature timeouts of some legitimate fuzzed inputs.
Should fix b/358207194
PiperOrigin-RevId: 665012820
[Gpr_To_Absl_Logging] Remove gpr logging header include from other headers
Some of the cc files are using gpr_log_verbosity_init() functions.
So I removed the #include <grpc/support/log.h> from all headers and put it selectively only in the cc files that used gpr_log_verbosity_init()
Closes#37513
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37513 from tanvi-jagtap:remove_gpr_headers_from_headers_01 612ca6d0f7
PiperOrigin-RevId: 663811895
[Gpr_To_Absl_Logging] Remove logging header from example and test/cpp folder
Closes#37488
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37488 from tanvi-jagtap:remove_header_examples 1423ee77ff
PiperOrigin-RevId: 663597077
[Gpr_To_Absl_Logging] Remove logging header from example and test/core/t folder
Closes#37489
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37489 from tanvi-jagtap:remove_header_test_core_t fd5422b1f5
PiperOrigin-RevId: 663597008
[Gpr_To_Absl_Logging] Remove logging header from example and test/core/t folder
Closes#37491
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37491 from tanvi-jagtap:remove_header_test_core_02 e524a2da80
PiperOrigin-RevId: 663595237
[Gpr_To_Absl_Logging] Remove logging header from example and test/core/ folder
Closes#37492
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37492 from tanvi-jagtap:remove_header_test_core_misc fbcd02ab53
PiperOrigin-RevId: 663593905
Split off from https://github.com/grpc/grpc/pull/37425
We are adding and removing callbacks on the OpenTelemetry Async Instruments without synchronization. This opens us to races where we have an AddCallback and RemoveCallback operation happening at the same time. The correct result after these operations is to still have a callback registered with OpenTelemetry at the end, but the two operations could race and we could just decide to remove the OpenTelemetry callback.
The fix delays removing OpenTelemetry callbacks to plugin destruction time.
Closes#37485
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37485 from yashykt:FixRaceOTelGauge 016b0a41b5
PiperOrigin-RevId: 663492598
It is hard to reason about tests if multiple callbacks record values for the same metrics with the same label sets.
Closes#37486
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37486 from yashykt:SimplifyOTelPluginTest 3b4d7f90b3
PiperOrigin-RevId: 663457107
Includes a few changes to pollset stuff to make it easier to not use pollsets (which I think is going to be generally helpful in the coming months)
Closes#37397
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37397 from ctiller:client-chicken 1099cd500a
PiperOrigin-RevId: 660014128
The microbenchmarks are tools for us, and it doesn't seem like we're buying much by maintaining them for different build systems.
Closes#37391
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37391 from ctiller:pickthis 24184f2b44
PiperOrigin-RevId: 658861012
Mark D. Roth
markdroth
gRPC Team Bot
Yash Tibrewal
Vignesh Babu
Tanvi Jagtap
Craig Tiller