Files
regorus/bindings/csharp/README.md
Anand Krishnamoorthi e68e852ee3 feat(xtask): consolidate CI workflows onto xtask helpers (#542)
- split the xtask crate into structured modules for
  - bindings
  - ci
  - dev
  - util
  - no-std
- Adding commands for
  - ci-release/ci-debug
  - MUSL/no-std
  - per- binding language smoke tests
  - developer tasks (fmt, clippy, pre-commit, pre-push)
- refresh Cargo manifests/locks, binding readmes, and shared FFI helpers so every binding reuses the same preparation steps
- refactor GitHub Actions (release/debug, extensions, CodeQL, clippy, bindings) to call the new xtask commands
- Use rust-cache in ci workflows (microsoft qdk also does this)
- extend README with a contributor workflow section describing how xtask mirrors CI expectations
- update pre-commit and pre-push hooks to use the xtask dev commands

WORKAROUND:
When dotnet is run from an xtask, codeql tracer intercepts it an routes to a nonexistent binary.
Therefore in codeql workflow, xtask is not used for c# and instead dotnet is directly invoked.
Tracked by #545

closes #475

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>
2026-01-27 07:42:21 +05:30

71 lines
3.6 KiB
Markdown

# Regorus CSharp
**Regorus** is
- *Rego*-*Rus(t)* - A fast, light-weight [Rego](https://www.openpolicyagent.org/docs/latest/policy-language/)
interpreter written in Rust.
- *Rigorous* - A rigorous enforcer of well-defined Rego semantics.
See main [Regorus page](https://github.com/microsoft/regorus) for more details about the project.
# Building
## Github Actions
The simplest way to build a Nuget for Regorus' C# bindings is to use Github Actions. The action to do so is named `bindings/csharp` and is defined in `.github/workflows/test-csharp.yml`.
There are two ways to trigger a Nuget build.
1. Runs are triggered automatically whenever a push or pull request is made to the `main` branch.
2. A run can be triggered manually by navigating to the action in the Github UI and clicking `Run workflow`. This option allows you to generate a Nuget for any branch, which is useful when testing the integration of in-progress changes to Regorus with other projects. Nuget files that are generated via this flow will have a `manualtrigger` suffix appended to their version number, making it easy to distinguish them from Nugets generated using the `main` branch.
![Image displaying the run workflow button](docs/images/readme/manuallytriggeringrun.png)
Once the workflow run completes, the generated Nuget can be downloaded by following these steps:
1. Open the run.
2. Click on `Build Regorus nuget` on the left.
3. Expand the `Upload Regorus nuget` step.
4. Click the `Artifact download URL` link at the bottom.
5. Save and extract the downloaded zip file to find the `.nupkg` file.
![Image displaying the download URL link](docs/images/readme/downloadnuget.png)
## Local
<<<<<<< HEAD
TODO
## Memory Usage Safeguards
The C# bindings expose allocator-backed memory tracking utilities via the static `Regorus.MemoryLimits` helper. Typical usage:
```csharp
// Restrict total allocations to 128 MiB for the process
Regorus.MemoryLimits.SetGlobalMemoryLimit(128 * 1024 * 1024);
// Optional: tune how frequently each thread flushes its allocation counters
Regorus.MemoryLimits.SetThreadFlushThresholdOverride(256 * 1024);
// Engine operations throw InvalidOperationException with the allocator message if the budget is exceeded
using var engine = new Regorus.Engine();
var veryLargeJson = new string('x', 128 * 1024);
try
{
engine.SetInputJson(veryLargeJson);
}
catch (InvalidOperationException ex)
{
Console.WriteLine($"Allocator reported: {ex.Message}");
}
// Restore defaults once done
Regorus.MemoryLimits.SetGlobalMemoryLimit(null);
Regorus.MemoryLimits.SetThreadFlushThresholdOverride(null);
```
See `bindings/csharp/Regorus.Tests/RegorusTests.cs` for scenario coverage and `bindings/csharp/TargetExampleApp/Program.cs` for end-to-end usage.
=======
The `cargo xtask` runner provides helpers for local builds:
1. `cargo xtask ffi` builds the `bindings/ffi` crate for the host platform in debug mode. Add `--target <triple>` (repeatable) to cross-compile, or `--release` to produce optimised artefacts. Results land under `bindings/ffi/target/<triple>/<profile>`.
2. `cargo xtask nuget` reuses those artefacts to pack the C# library. It defaults to debug builds for the host but accepts `--target`, `--release`, `--artifacts-dir <path>` to reuse existing binaries, and `--enforce-artifacts` to require every officially supported platform.
3. `cargo xtask test-csharp` ensures a NuGet is available (rebuilding when required or when `--force-nuget` is passed) and then runs `Regorus.Tests`, `TestApp`, and `TargetExampleApp` against it. The command accepts the same build flags as `cargo xtask nuget`.
>>>>>>> 380a27c (feat(xtask): consolidate CI workflows onto xtask helpers)