first commit

example/pkg/command/long.go

@@ -0,0 +1,50 @@
+package command
+
+import (
+	"context"
+	"time"
+
+	"gitoa.ru/go-4devs/console"
+	"gitoa.ru/go-4devs/console/input"
+	"gitoa.ru/go-4devs/console/input/option"
+	"gitoa.ru/go-4devs/console/output"
+	"gitoa.ru/go-4devs/console/validator"
+)
+
+const defaultTimeout = time.Second * 30
+
+// Long example of a command that takes a long time to run.
+func Long() *console.Command {
+	return &console.Command{
+		Name: "fdevs:command:long",
+		Execute: func(ctx context.Context, in input.Input, out output.Output) error {
+			timeout := in.Option(ctx, "timeout").Duration()
+			timer := time.NewTimer(timeout)
+			ticker := time.NewTicker(time.Second)
+			defer ticker.Stop()
+			for {
+				select {
+				case t := <-ticker.C:
+					out.Println(ctx, "ticker: <info>", t, "</info>")
+				case <-timer.C:
+					out.Println(ctx, "<error>stop timer</error>")
+
+					return nil
+				case <-ctx.Done():
+					out.Println(ctx, "<info>cancel context</info>")
+
+					return nil
+				}
+			}
+		},
+		Configure: func(ctx context.Context, def *input.Definition) error {
+			def.SetOptions(option.Duration("timeout", "set duration run command",
+				option.Default(defaultTimeout),
+				option.Short("t"),
+				option.Valid(validator.NotBlank(input.ValueDuration)),
+			))
+
+			return nil
+		},
+	}
+}