new 'canary.PublicHttpLooper' (#771)

canary/looper.go

@@ -0,0 +1,60 @@
+package canary
+
+import (
+	"github.com/openziti/zrok/environment/env_core"
+	"github.com/openziti/zrok/sdk/golang/sdk"
+	"github.com/sirupsen/logrus"
+)
+
+type PublicHttpLooper struct {
+	id       int
+	frontend string
+	root     env_core.Root
+	shr      *sdk.Share
+	done     chan struct{}
+}
+
+func NewPublicHttpLooper(id int, frontend string, root env_core.Root) *PublicHttpLooper {
+	return &PublicHttpLooper{
+		id:       id,
+		frontend: frontend,
+		root:     root,
+		done:     make(chan struct{}),
+	}
+}
+
+func (l *PublicHttpLooper) Run() {
+	defer close(l.done)
+	defer logrus.Infof("stopping #%d", l.id)
+	logrus.Infof("starting #%d", l.id)
+
+	if err := l.startup(); err != nil {
+		logrus.Fatalf("error starting #%d: %v", l.id, err)
+	}
+
+	logrus.Infof("#%d complete")
+	if err := l.shutdown(); err != nil {
+		logrus.Fatalf("error shutting down #%d: %v", l.id, err)
+	}
+}
+
+func (l *PublicHttpLooper) startup() error {
+	shr, err := sdk.CreateShare(l.root, &sdk.ShareRequest{
+		ShareMode:      sdk.PublicShareMode,
+		BackendMode:    sdk.ProxyBackendMode,
+		Target:         "canary.PublicHttpLooper",
+		Frontends:      []string{l.frontend},
+		PermissionMode: sdk.ClosedPermissionMode,
+	})
+	if err != nil {
+		return err
+	}
+	l.shr = shr
+	logrus.Infof("#%d allocated share '%v'", l.id, l.shr)
+
+	return nil
+}
+
+func (l *PublicHttpLooper) shutdown() error {
+	return nil
+}