runner.go

internal/app/runner.go

@@ -0,0 +1,43 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"fmt"
+)
+
+type Runner struct {
+	Name string
+	Run  func(context.Context) error
+}
+
+type runnerResult struct {
+	name string
+	err  error
+}
+
+func RunConcurrent(ctx context.Context, runners ...Runner) error {
+	if len(runners) == 0 {
+		return nil
+	}
+
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+	results := make(chan runnerResult, len(runners))
+	for _, runner := range runners {
+		runner := runner
+		go func() {
+			results <- runnerResult{name: runner.Name, err: runner.Run(ctx)}
+		}()
+	}
+
+	var resultErr error
+	for range runners {
+		result := <-results
+		if result.err != nil {
+			resultErr = errors.Join(resultErr, fmt.Errorf("%s flow: %w", result.name, result.err))
+			cancel()
+		}
+	}
+	return resultErr
+}