Setup Go builds and tests in the CI

.github/workflows/build.yml

@@ -78,6 +78,15 @@ jobs:
           path: offchain/schema.graphql
           if-no-files-found: error
 
+      - name: Install Go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: 'go.mod'
+
+      - name: Run Go tests
+        working-directory: ${{ github.workspace }}
+        run: go test ./...
+
   build_docker:
     runs-on: ubuntu-22.04
     needs:

.github/workflows/go-code-quality.yml

@@ -0,0 +1,27 @@
+name: Assess Go code quality
+
+on:
+  push:
+    paths:
+      - ".github/workflows/go-code-quality.yml"
+      - ".golangci.yml"
+      - "cmd/**"
+      - "internal/**"
+
+jobs:
+  assess-go-code-quality:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: "go.mod"
+
+      - name: Run Linter
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.54.2

.github/workflows/rust-code-quality.yml

@@ -4,7 +4,7 @@ name: Assess Rust code quality
 on:
   push:
     paths:
-      - '.github/workflows/code-quality.yml'
+      - '.github/workflows/rust-code-quality.yml'
       - 'offchain/**'
 
 jobs:

.golangci.yml

@@ -0,0 +1,13 @@
+linters:
+  enable:
+    - exhaustive
+    - goconst
+    - godox
+    - gofmt
+    - gomnd
+    - lll
+    - misspell
+linters-settings:
+  lll:
+    line-length: 100
+    tab-width: 4

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Added `cartesi-rollups-node` Go binary as a single entrypoint to execute all Cartesi Node services
+
 ### Changed
 
 - Added rollups-node version to the logs in all services

build/Dockerfile

@@ -4,12 +4,16 @@
 # syntax=docker.io/docker/dockerfile:1.4
 
 ARG RUST_VERSION=1.72.1
+ARG GO_VERSION=1.21.1
 ARG SERVER_MANAGER_VERSION=0.8.2
 ARG ROLLUPS_CONTRACTS_VERSION=1.0.2
 
 ARG BASE_PATH=/opt/cartesi
 ARG RUST_BUILD_PATH=${BASE_PATH}/src/rollups-node/offchain
 ARG DEPLOYMENT_PATH=${BASE_PATH}/share/deployments
+ARG GO_BASE_PATH=/go
+ARG GO_BUILD_PATH=${GO_BASE_PATH}/cartesi-rollups-node
+ARG GO_BIN_PATH=${GO_BASE_PATH}/bin
 ARG RUNTIME_DIR=/var/opt/cartesi
 
 #
@@ -69,6 +73,15 @@ COPY ./offchain/ .
 COPY ./.git ../ 
 RUN cargo build --release
 
+#
+# Go build
+#
+FROM golang:${GO_VERSION}-bookworm as go-builder
+ARG GO_BUILD_PATH
+WORKDIR ${GO_BUILD_PATH}
+COPY . .
+RUN go install -ldflags "-s -w" ./cmd/cartesi-rollups-node
+
 #
 # Runtime
 #
@@ -93,6 +106,10 @@ ARG RUST_BUILD_PATH
 COPY --from=rust-builder ${RUST_BUILD_PATH}/target/release/cartesi-rollups-* .
 ENV PATH="${BASE_PATH}/bin:${PATH}"
 
+# Copy Go binary
+ARG GO_BIN_PATH
+COPY --from=go-builder ${GO_BIN_PATH}/cartesi-rollups-node .
+
 # Setup runtime dir
 ARG RUNTIME_DIR
 RUN mkdir -p ${RUNTIME_DIR}

cmd/cartesi-node/no-backend.go → cmd/cartesi-rollups-node/nobackend.go

@@ -6,8 +6,8 @@ package main
 import "github.com/spf13/cobra"
 
 var noBackend = &cobra.Command{
-	Use:                   "no-backend",
-	Short:                 "Starts the node in no-backend mode",
+	Use:                   "nobackend",
+	Short:                 "Starts the node in nobackend mode",
 	DisableFlagsInUseLine: true,
 	Run: func(cmd *cobra.Command, args []string) {
 		println("TODO")

cmd/cartesi-node/root.go → cmd/cartesi-rollups-node/root.go

@@ -6,7 +6,7 @@ package main
 import "github.com/spf13/cobra"
 
 var rootCmd = &cobra.Command{
-	Use:                   "cartesi-node",
+	Use:                   "cartesi-rollups-node",
 	CompletionOptions:     cobra.CompletionOptions{HiddenDefaultCmd: true},
 	DisableFlagsInUseLine: true,
 }

internal/pkg/services/graphql-service.go → internal/pkg/services/graphql.go

@@ -30,7 +30,10 @@ func (g GraphQLService) Start(ctx context.Context) error {
 	go func() {
 		<-ctx.Done()
 		fmt.Printf("%v: %v\n", g.String(), ctx.Err())
-		cmd.Process.Signal(syscall.SIGTERM)
+		if err := cmd.Process.Signal(syscall.SIGTERM); err != nil {
+			msg := "%v: failed to send SIGTERM to %v\n"
+			fmt.Printf(msg, g.String(), binaryName)
+		}
 	}()
 
 	err := cmd.Wait()

internal/pkg/services/graphql_test.go

@@ -0,0 +1,50 @@
+// (c) Cartesi and individual authors (see AUTHORS)
+// SPDX-License-Identifier: Apache-2.0 (see LICENSE)
+
+package services
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"syscall"
+	"testing"
+	"time"
+)
+
+func TestGraphQLService(t *testing.T) {
+	t.Run("it stops when the context is cancelled", func(t *testing.T) {
+		service := GraphQLService{}
+		setupEnvVars()
+		ctx, cancel := context.WithCancel(context.Background())
+		exit := make(chan error)
+
+		go func() {
+			if err := service.Start(ctx); err != nil {
+				exit <- err
+			}
+		}()
+
+		<-time.After(100 * time.Millisecond)
+		cancel()
+
+		err := <-exit
+		exitError, ok := err.(*exec.ExitError)
+		if !ok || !assertExitErrorWasCausedBy(exitError, syscall.SIGTERM) {
+			fmt.Printf("service exited for the wrong reason: %v", err)
+			t.FailNow()
+		}
+	})
+}
+
+func setupEnvVars() {
+	abs, _ := filepath.Abs("../../../offchain/target/debug")
+	os.Setenv("PATH", abs)
+}
+
+func assertExitErrorWasCausedBy(err *exec.ExitError, signal syscall.Signal) bool {
+	status := err.Sys().(syscall.WaitStatus)
+	return status.Signal() == signal
+}