Add support for Attach API functionality (#1090)

Co-authored-by: Pablo Borrelli <pablo.borrelli0@gmail.com>

node/api/server.go

@@ -34,8 +34,9 @@ type ServeMux interface {
 }
 
 type PodHandlerConfig struct { //nolint:golint
-	RunInContainer   ContainerExecHandlerFunc
-	GetContainerLogs ContainerLogsHandlerFunc
+	RunInContainer    ContainerExecHandlerFunc
+	AttachToContainer ContainerAttachHandlerFunc
+	GetContainerLogs  ContainerLogsHandlerFunc
 	// GetPods is meant to enumerate the pods that the provider knows about
 	GetPods PodListerFunc
 	// GetPodsFromKubernetes is meant to enumerate the pods that the node is meant to be running
@@ -68,6 +69,14 @@ func PodHandler(p PodHandlerConfig, debug bool) http.Handler {
 			WithExecStreamIdleTimeout(p.StreamIdleTimeout),
 		),
 	).Methods("POST", "GET")
+	r.HandleFunc(
+		"/attach/{namespace}/{pod}/{container}",
+		HandleContainerAttach(
+			p.AttachToContainer,
+			WithExecStreamCreationTimeout(p.StreamCreationTimeout),
+			WithExecStreamIdleTimeout(p.StreamIdleTimeout),
+		),
+	).Methods("POST", "GET")
 
 	if p.GetStatsSummary != nil {
 		f := HandlePodStatsSummary(p.GetStatsSummary)