Brings measured CPU for this function from 1.95ns down to 0.4ns.
Closes#37057
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37057 from ctiller:xp 99a423016ec69a04cd532cbeac0a92c7aad7ee0e
PiperOrigin-RevId: 647389088
These are substitutes for language features and never warrant a new function being created. Significantly boosts the benchmarks in #36946Closes#36981
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36981 from ctiller:seqqy 1a075be7e9dd0a978f730083928e335409a0a057
PiperOrigin-RevId: 645169296
Do not set `absl::MinLogLevel` if user does not set `GRPC_VERBOSITY`. Only set `absl::MinLogLevel` if the user has specified `GRPC_VERBOSITY`.
Background:
gRPC Core overrides the setting of `absl::MinLogLevel` based on the setting of `GRPC_VERBOSITY`.
`GRPC_VERBOSITY` defaults to the setting of `GPR_DEFAULT_LOG_VERBOSITY_STRING` if that env var is not set, resulting in the consequence that gRPC Core would override the setting of `absl::MinLogLevel` even if the user had previously modified it.
Note that even with this change, the minimum log severity that's printed remains at `ERROR` by default.
Closes#36931
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36931 from yashykt:ChangeDefaultGrpcVerbosity ee92404c35bad2886396681ca2f0f729fed4a4b7
PiperOrigin-RevId: 644127489
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
[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#36694
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36694 from tanvi-jagtap:python_codegen_gpr_log 54ee362e3d306c9b3685dfe02220d1f89bede098
PiperOrigin-RevId: 636071998
[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.
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Closes#36445
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36445 from tanvi-jagtap:tjagtap_assert_tools c160ab231acec7e78c7efeadaf57e2c233e18a1e
PiperOrigin-RevId: 628093687
Remove the old `switch` library - this used to be an implementation detail of `Seq`, `TrySeq` - but has become unused.
Add a new user facing primitive `Switch` that fills a similar role to `switch` in C++ - selecting a promise to execute based on a primitive discriminator - much like `If` allows selection based on a boolean discriminator now.
A future change will optimize this to actually lower the `Switch` into an actual `switch` statement, but for right now I want to get the functionality in.
Closes#35424
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35424 from ctiller:switchy 5308a914c689b79e5e83f218ae0cd7e88bc0034e
PiperOrigin-RevId: 595140965
When an error occurs in `TrySeq`, log the error.
Also, in the trace statements, capture the file/line that the sequence was constructed at, and log that with the traces.
Closes#35319
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35319 from ctiller:trace-seq bc0d47395fb6c8ea373b416a29878bda9b1b8a91
PiperOrigin-RevId: 591999228
`AllOk` runs a set of promises concurrently, and like `TryJoin` waits for them all to succeed or one to fail.
Unlike `TryJoin` it returns a single unified status of the composition, so cannot handle member promises that might return `StatusOr` or the like.
Closes#35304
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35304 from ctiller:all-review 30f5f809c6514d38bf1ee3fe9180d52ae03a6833
PiperOrigin-RevId: 591031189
This commit upgrades gRPC to protobuf v25.0 and makes some fixes to
account for upb changes. One major change is that upb has been merged
into the protobuf repo, so we can now drop the separate `@upb`
dependency. Another is that `.upb.c` files no longer exist and there are
new `.upb_minitable.h` and `.upb_minitable.c` files. The longer
filenames exceeded a Windows restriction, so to work around that I
renamed the `upb-generated` directory to just `upb-gen`, and likewise
for `upbdefs-generated`.
Add a config to experiments & rollouts to allow dependent experiments to
be flagged.
We're getting past the point where it's possible to reason about which
experiments need to be turned off if we disable some other experiment,
and so this provides some additional rollout safety.
Can be specified in both experiments and rollouts: experiments.yaml
makes the most sense and we should default to it, but rollouts.yaml lets
us put dependencies between internal & external dependencies internally
and that's gonna be a little useful.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
Currently it is very easy to use the `TlsCredentialsOptions` in such a
way that it produces a memory leak. For example, the code block
```
{
TlsCredentialsOptions options;
}
```
produces a memory leak. This PR fixes up the ownership bugs in this
class and its `grpc_tls_credentials_options`, the C-core analogue.
The basic APIs for the CRL Reloading features.
This adds external types to represent CRL Providers, CRLs, and
CertificateInfo.
Internally we will use `CrlImpl` - this layer is needed to hide OpenSSL
details from the user.
GRFC - https://github.com/grpc/proposal/pull/382
Things Done
* Add external API for `CrlProvider`, `Crl`, `CertInfo` (`CertInfo` is
used during CRL lookup rather than passing the entire certificate).
* Add code paths in `ssl_transport_security` to utilize CRL providers
* Add `StaticCrlProvider`
* Refactor `crl_ssl_transport_security_test.cc` so it is more extensible
and can be used with providers
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The previous approach of generating strings was not converging well.
Instead, load a bitfield from the protobuf and use the bits to select
experiments. The fuzzers can explore this space swiftly.
Downside is that as experiments rotate in/out the corpus gets a bit
messed up, but I'm reasonably confident we'll recover quickly.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
WRR is showing a very high CPU cost relative to previous solutions, and
it's unclear why this is.
Add two metrics that should help us see the shape of the subchannel sets
that are being passed to high cost systems in order to confirm/deny
theories.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
Our current implementation of Join, TryJoin leverage some complicated
template stuff to work, which makes them hard to maintain. I've been
thinking about ways to simplify that for some time and had something
like this in mind - using a code generator that's at least a little more
understandable to code generate most of the complexity into a file that
is checkable.
Concurrently - I have a cool optimization in mind - but it requires that
we can move promises after polling, which is a contract change. I'm
going to work through the set of primitives we have in the coming weeks
and change that contract to enable the optimization.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
Our current implementation of `Seq`, `TrySeq` leverage some complicated
template stuff to work, which makes them hard to maintain. I've been
thinking about ways to simplify that for some time and had something
like this in mind - using a code generator that's at least a little more
understandable to code generate most of the complexity into a file that
is checkable.
Concurrently - I have a cool optimization in mind - but it requires that
we can move promises after polling, which is a contract change. I'm
going to work through the set of primitives we have in the coming weeks
and change that contract to enable the optimization.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
In real services most of our time ends up in the `Read1()` function,
which populates one byte into the bit buffer.
Change this to read in as many as possible bytes at a time into that
buffer.
Additionally, generate all possible (to some depth) parser geometries,
and add a benchmark for them. Run that benchmark and select the best
geometry for decoding base64 strings (since this is the main use-case).
(gives about a 30% speed boost parsing base64 then huffman encoded
random binary strings)
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
PanCakes to the rescue!
We noticed that our 'sanity' test was going to fail, but we think we can
fix that automatically, so we put together this PR to do just that!
If you'd like to opt-out of these PR's, add yourself to NO_AUTOFIX_USERS
in .github/workflows/pr-auto-fix.yaml
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
It introduces the following syntax:
The following would mark the experiment as broken on ios, false on
windows and debug on posix. If a platform is un-specified, the default
for that platform will be set to false. Refer to
test/core/experiments/fixtures/test_experiments_rollout.yaml for
examples which are tested.
- name: experiment_1
default:
ios: broken
windows: false
posix: debug
It also supports the already existing syntax and interprets it as just
specifying one default for all platforms.
Supported platform tags: ios, windows, posix
PanCakes to the rescue!
We noticed that our 'sanity' test was going to fail, but we think we can
fix that automatically, so we put together this PR to do just that!
If you'd like to opt-out of these PR's, add yourself to NO_AUTOFIX_USERS
in .github/workflows/pr-auto-fix.yaml
Co-authored-by: markdroth <markdroth@users.noreply.github.com>
