Building project locally failing with protoc problems

[johanandren]

Pretty sure I used to be able to build, but current main as of 29 sep fails with:

Caused by:
  process didn't exit successfully: `/Users/johan/Code/Lightbend/Akka/akka-edge-rs/target/debug/build/akka-projection-rs-grpc-0b55aa6ca26e950f/build-script-build` (exit status: 1)
  --- stdout
  cargo:rerun-if-changed=akka/projection/grpc/event_consumer.proto
  cargo:rerun-if-changed=proto

  --- stderr
  Error: Custom { kind: Other, error: "protoc failed: google/protobuf/any.proto: File not found.\ngoogle/protobuf/timestamp.proto: File not found.\ngoogle/protobuf/empty.proto: File not found.\nakka/projection/grpc/event_producer.proto:7:1: Import \"google/protobuf/any.proto\" was not found or had errors.\nakka/projection/grpc/event_producer.proto:8:1: Import \"google/protobuf/timestamp.proto\" was not found or had errors.\nakka/projection/grpc/event_producer.proto:9:1: Import \"google/protobuf/empty.proto\" was not found or had errors.\nakka/projection/grpc/event_producer.proto:193:3: \"google.protobuf.Timestamp\" is not defined.\nakka/projection/grpc/event_producer.proto:222:3: \"google.protobuf.Any\" is not defined.\nakka/projection/grpc/event_producer.proto:227:3: \"google.protobuf.Any\" is not defined.\nakka/projection/grpc/event_producer.proto:251:3: \"google.protobuf.Timestamp\" is not defined.\nakka/projection/grpc/event_consumer.proto:7:1: Import \"google/protobuf/any.proto\" was not found or had errors.\nakka/projection/grpc/event_consumer.proto:8:1: Import \"google/protobuf/timestamp.proto\" was not found or had errors.\nakka/projection/grpc/event_consumer.proto:9:1: Import \"google/protobuf/empty.proto\" was not found or had errors.\nakka/projection/grpc/event_consumer.proto:10:1: Import \"akka/projection/grpc/event_producer.proto\" was not found or had errors.\nakka/projection/grpc/event_consumer.proto:42:5: \"Event\" is not defined.\nakka/projection/grpc/event_consumer.proto:43:5: \"FilteredEvent\" is not defined.\nakka/projection/grpc/event_consumer.proto:59:12: \"FilterCriteria\" is not defined.\n" }
warning: build failed, waiting for other jobs to finish...

[huntc]

That’s odd. Can you please try “cargo clean” and try again?

[huntc]

Also of interest, the CI is building ok…

[huntc]

I'm increasingly convinced that by running cargo clean this problem should disappear. It could be the result of some build cache that now fails given that we're relocated the backend into a backend folder.

I ran cargo clean from the root and then followed the README again, and all appears well.

[johanandren]

Yeah, I suspect it is something with the environment on my machine, but I don't quite understand what it could be. Protoc version perhaps. I get this error after a cargo clean; cargo build on the root project from current main and in the ui PR branch root and/or in the backend example project.

[huntc]

What version of protoc for you? Mine is libprotoc 23.4

[johanandren]

Ah, that's probably it protoc --version shows libprotoc 3.11.4, I have 23.4 installed but put the old one on PATH at some point since we need it for building Akka.

Switching to 23.4 and doing a clean and then a build I get a new problem though:

error[E0599]: no method named `timestamp_nanos_opt` found for struct `DateTime` in the current scope
   --> akka-projection-rs-grpc/src/producer.rs:199:58
    |
199 |                         nanos: envelope.offset.timestamp.timestamp_nanos_opt().unwrap_or_default() as i32
    |

[huntc]

I think you need a cargo update there. That shouldn't be required generally, but sometimes dependencies can go out of date.

[huntc]

Actually, that's a problem in our build file... Lemme get your a PR