use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/mholt/caddy/onevent/hook/config.go

@@ -0,0 +1,20 @@
+package hook
+
+import (
+	"github.com/mholt/caddy"
+)
+
+// Config describes how Hook should be configured and used.
+type Config struct {
+	ID      string
+	Event   caddy.EventName
+	Command string
+	Args    []string
+}
+
+// SupportedEvents is a map of supported events.
+var SupportedEvents = map[string]caddy.EventName{
+	"startup":   caddy.InstanceStartupEvent,
+	"shutdown":  caddy.ShutdownEvent,
+	"certrenew": caddy.CertRenewEvent,
+}

vendor/github.com/mholt/caddy/onevent/hook/hook.go

@@ -0,0 +1,41 @@
+package hook
+
+import (
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	"github.com/mholt/caddy"
+)
+
+// Hook executes a command.
+func (cfg *Config) Hook(event caddy.EventName, info interface{}) error {
+	if event != cfg.Event {
+		return nil
+	}
+
+	nonblock := false
+	if len(cfg.Args) >= 1 && cfg.Args[len(cfg.Args)-1] == "&" {
+		// Run command in background; non-blocking
+		nonblock = true
+		cfg.Args = cfg.Args[:len(cfg.Args)-1]
+	}
+
+	// Execute command.
+	cmd := exec.Command(cfg.Command, cfg.Args...)
+	cmd.Stdin = os.Stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if nonblock {
+		log.Printf("[INFO] Nonblocking Command \"%s %s\" with ID %s", cfg.Command, strings.Join(cfg.Args, " "), cfg.ID)
+		return cmd.Start()
+	}
+	log.Printf("[INFO] Blocking Command \"%s %s\" with ID %s", cfg.Command, strings.Join(cfg.Args, " "), cfg.ID)
+	err := cmd.Run()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

vendor/github.com/mholt/caddy/onevent/on.go

@@ -0,0 +1,68 @@
+package onevent
+
+import (
+	"strings"
+
+	"github.com/google/uuid"
+	"github.com/mholt/caddy"
+	"github.com/mholt/caddy/onevent/hook"
+)
+
+func init() {
+	// Register Directive.
+	caddy.RegisterPlugin("on", caddy.Plugin{Action: setup})
+}
+
+func setup(c *caddy.Controller) error {
+	config, err := onParse(c)
+	if err != nil {
+		return err
+	}
+
+	// Register Event Hooks.
+	c.OncePerServerBlock(func() error {
+		for _, cfg := range config {
+			caddy.RegisterEventHook("on-"+cfg.ID, cfg.Hook)
+		}
+		return nil
+	})
+
+	return nil
+}
+
+func onParse(c *caddy.Controller) ([]*hook.Config, error) {
+	var config []*hook.Config
+
+	for c.Next() {
+		cfg := new(hook.Config)
+
+		if !c.NextArg() {
+			return config, c.ArgErr()
+		}
+
+		// Configure Event.
+		event, ok := hook.SupportedEvents[strings.ToLower(c.Val())]
+		if !ok {
+			return config, c.Errf("Wrong event name or event not supported: '%s'", c.Val())
+		}
+		cfg.Event = event
+
+		// Assign an unique ID.
+		cfg.ID = uuid.New().String()
+
+		args := c.RemainingArgs()
+
+		// Extract command and arguments.
+		command, args, err := caddy.SplitCommandAndArgs(strings.Join(args, " "))
+		if err != nil {
+			return config, c.Err(err.Error())
+		}
+
+		cfg.Command = command
+		cfg.Args = args
+
+		config = append(config, cfg)
+	}
+
+	return config, nil
+}