Feature/add grpc serial

[Jahsil]

Description

Please include a summary of the change and which issue is fixed. List any dependencies that are required for this change.

Fixes #(issue_no)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Documentation update

Checklist:

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests/screenshots (if any) that prove my fix is effective or that my feature works.
• I have tested the tests implicated (if any) by my own code and they pass (make test or ctest -VV -R <test-name>).
• If my change is significant or breaking, I have passed all tests with ./docker-compose.sh test &> output and attached the output.
• I have tested my code with OPTION_BUILD_ADDRESS_SANITIZER or ./docker-compose.sh test-address-sanitizer &> output and OPTION_TEST_MEMORYCHECK.
• I have tested my code with OPTION_BUILD_THREAD_SANITIZER or ./docker-compose.sh test-thread-sanitizer &> output.
• I have tested with Helgrind in case my code works with threading.
• I have run make clang-format in order to format my code and my code follows the style guidelines.

If you are unclear about any of the above checks, have a look at our documentation here.

[viferga]

It looks great, can you create a test for it? Check source/tests folder and copy the rapid_json_serial_test (or similar).

[Jahsil]

Added a test for the gRPC serializer.

[viferga]

@Jahsil Can you send the logs of the test passing? As it's not included in the CI yet..

[Jahsil]

16: [ RUN ] grpc_serial_test.IntPositive
16: [ OK ] grpc_serial_test.IntPositive (106 ms)
16: [ RUN ] grpc_serial_test.IntNegative
16: [ OK ] grpc_serial_test.IntNegative (2 ms)
16: [ RUN ] grpc_serial_test.StringBasic
16: [ OK ] grpc_serial_test.StringBasic (2 ms)
16: [ RUN ] grpc_serial_test.StringEmpty
16: [ OK ] grpc_serial_test.StringEmpty (2 ms)
16: [ RUN ] grpc_serial_test.StringSpecialChars
16: [ OK ] grpc_serial_test.StringSpecialChars (2 ms)
16: [ RUN ] grpc_serial_test.BoolTest
16: [ OK ] grpc_serial_test.BoolTest (2 ms)
16: [ RUN ] grpc_serial_test.DoubleTest
16: [ OK ] grpc_serial_test.DoubleTest (2 ms)
16: [ RUN ] grpc_serial_test.NullTest
16: [ OK ] grpc_serial_test.NullTest (2 ms)
16: [ RUN ] grpc_serial_test.SimpleArray
16: [ OK ] grpc_serial_test.SimpleArray (2 ms)
16: [ RUN ] grpc_serial_test.SimpleMap
16: [ OK ] grpc_serial_test.SimpleMap (2 ms)
16: [ RUN ] grpc_serial_test.UnsupportedTypeFailsGracefully
16: [ OK ] grpc_serial_test.UnsupportedTypeFailsGracefully (2 ms)
100% tests passed

[viferga]

Running CI.

[viferga]

But listen, the last commit is not necessary, undo it, look:

core/source/serials/rapid_json_serial/CMakeLists.txt

Line 1 in 1c09007

# Check if this serial is enabled

[viferga]

It's not even building:
https://github.com/metacall/core/actions/runs/23924432896/job/70322243138?pr=753#step:3:5239

[viferga]

But the real issue is this:

2026-04-07T20:56:11.5897405Z #10 7.692 -- gRPC not found, skipping grpc_serial

[viferga]

Remove the QUIET from the import so we can debug it.

[viferga]

@Jahsil I have done some improvements but the code is still not ready to merge, you need something like this:
https://github.com/IvanSafonov/grpc-cmake-example/blob/master/cmake/FindGRPC.cmake
https://github.com/IvanSafonov/grpc-cmake-example/blob/master/cmake/FindProtobuf.cmake

For finding protobuf and gRPC. How have you tested this on your PC?

[Jahsil]

I will add both files