Hi everyone! I'm currently trying to setup the pact-protobuf plugin, I've setup a skeleton test and am trying to run it with the plugin installed but getting

pact_ffi::plugins: Failed to call out to plugin - Request to configure interaction failed: Failed to process protobuf: Failed to invoke protoc binary: exit code exit status: 1

back when running it. I've checked in the plugins dir that it has actually downloaded

protoc

and the executable is accessible - any help would be appreciated!

Hey, can you provide some details on your machine, is this in ci, or locally?

Hi Yousaf, I'm running the test locally, on a ubuntu machine. I installed the pact-plugin-cli binary and then installed the plugin through that

have you got

protoc

executable on the command line?

protoc --version

https://grpc.io/docs/protoc-installation/ if that works, can you invoke the protobuf plugin directly, to run the plugin? There is a grpc example here in the pact-plugin repo, you could try that for starters to check it isn’t something in your test. https://github.com/pact-foundation/pact-plugins/pull/55

I don't, but I did notice one was bundled with the plugin

There is, it’s a bit old (the bundled one) and doesn’t work for macos arm64 OOB, which is why I asked about platform. I think protoc does need to be available on the path, so could you try installing the protobuf-compiler and see how you get on? It may be that it is actually calling it, but can’t find your protobuf file, so protoc is failing. What does your grpc interaction look like, specifically the path to the protobuf file

Ah! I think I've found it, looks to have been the file path to the

.proto

file. Many thanks!

docs for matchers are here https://docs.pact.io/implementation_guides/pact_plugins/docs/matching-rule-definition-expressions although that doesn’t look to have synced in a while source is here https://github.com/pact-foundation/pact-plugins/blob/main/docs/matching-rule-definition-expressions.md you can compose expressions. If you can create an example with your scenario, it’s easier for me to visualise 👍

Thanks for sending that Yousaf. This is what I'm trying to do

hmmm. The doc seems to imply it would take the shape from

Asset

but not require that field. @rholshausen any ideas?

Looks like a bug. Are you using the latest version of the protobuf plugin?

@rholshausen I believe this is the latest

Yeah, that is

Is it possible this worked on a previous version that I could downgrade to?

I'm unsure, I won't be able to tell. I looked at some recent commits, but could not see anything that would result in a regression. But there has been a lot of work in this space recently.

d'oh

Perhaps we can detect invalid pact prefixes and error/warn