Add initial Go server skeleton with HTTP handlers, middleware, job runner, and stubs

internal/infra/exec/exec.go

@@ -0,0 +1,42 @@
+package exec
+
+import (
+	"bytes"
+	"context"
+	"golang.org/x/sync/errgroup"
+	"os/exec"
+	"time"
+)
+
+type RunOptions struct {
+	Timeout time.Duration
+}
+
+type CommandRunner interface {
+	Run(ctx context.Context, cmd string, args []string, opts RunOptions) (string, string, error)
+}
+
+type DefaultRunner struct{}
+
+func (r *DefaultRunner) Run(ctx context.Context, cmd string, args []string, opts RunOptions) (string, string, error) {
+	var stdout, stderr bytes.Buffer
+	execCtx := ctx
+	if opts.Timeout > 0 {
+		var cancel context.CancelFunc
+		execCtx, cancel = context.WithTimeout(ctx, opts.Timeout)
+		defer cancel()
+	}
+
+	eg, cctx := errgroup.WithContext(execCtx)
+
+	eg.Go(func() error {
+		command := exec.CommandContext(cctx, cmd, args...)
+		command.Stdout = &stdout
+		command.Stderr = &stderr
+		return command.Run()
+	})
+	if err := eg.Wait(); err != nil {
+		return stdout.String(), stderr.String(), err
+	}
+	return stdout.String(), stderr.String(), nil
+}