kuksa_go_client

Running the KUKSA golang Client

Execute the example

Set everything up for the KUKSA.val GO client

• If you do not have GO installed follow this page and install v1.18 or above
• If you do not have a protobuf compiler installed execute the following from this directory:

> go run protocInstall/protocInstall.go

Or install the protobuf compiler yourself(https://grpc.io/docs/protoc-installation/)

• Add the protobuf compiler (e.g. HOME_DIR/protoc/bin) to your PATH variable. For example for linux do:

> export PATH=$PATH:$HOME/protoc/bin

If using a newer Linux version that has protoc >= 3.19 by default you may alternatively install the protobuf compiler with apt:

> sudo apt install protobuf-compiler

if you use aptyou must manually create a folder called proto

> mkdir proto

• Run the following command to install the needed GO protocol buffers plugins:

> go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
> go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest

The plugins will be installed in $GOBIN, defaulting to $GOPATH/bin which is default HOME_DIR/go/bin. It must be in your $PATH for the protocol compiler protoc to find it. For linux execute:

> export PATH=$PATH:$HOME/go/bin

• Then execute

> go generate .

if you encounter a problem, you have to give the protoc executable the right to be executed e.g in Linux run

> sudo chmod +x <HOME_DIR>/protoc/bin/protoc

Run the KUKSA.val GO client

Start KUKSA.val Server or Databroker

• Build kuksa.val and start the server

> cd kuksa.val/kuksa-val-server/build/src/
> ./kuksa-val-server

• Alternatively, start the appropriate docker container.

> docker run -it --rm --net=host -p 127.0.0.1:8090:8090 -e LOG_LEVEL=ALL ghcr.io/eclipse/kuksa.val/kuksa-val:master

• Build and run KUKSA.val Databroker by executing:

> cargo run --bin databroker

• Alternatively, start the apropriate docker container.

> docker run -it --rm --net=host ghcr.io/eclipse/kuksa.val/databroker:master

• To run the GO Client execute:

> go build .
> go run .

• Alternatively, execute:

> ./kuksa_go_client

Configuration of the KUKSA.val GO client

The GO clients reads the configuration file kuksa-client.json. In this repository example configurations for both KUKSA.val Databroker (kuksa-client-grpc.json) and KUKSA.val Server (kuksa-client-ws.json) exists. The file kuksa-client.json is by default linked to kuksa-client-grpc.json.

For using the GO client with the kuksa.val server set protocol = ws and for a connection to kuksa.val Databroker set protocol = grpc. On the command line it's available through -protocol ws/grpc.

Note: For communication with KUKSA Databroker only insecure mode is supported, TLS can not be used!

Dependency updates

If dependencies needs to be updated the following commands can be used:

go generate .
go get -u
go mod tidy

This will update go.modand go.sum.

Linters

Our Continuous Integration verifies that the code pass the Golang Linter. To avoid failing PR builds it is recommended to run the linter manually before creating a Pull Request.