Move API handlers to separate package

This makes the package split a little cleaner and easier to import the
HTTP handlers for other consumers.

vkubelet/api/exec.go

@@ -0,0 +1,42 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gorilla/mux"
+	"k8s.io/kubernetes/pkg/kubelet/server/remotecommand"
+)
+
+// PodExecHandlerFunc makes an http handler func from a Provider which execs a command in a pod's container
+// Note that this handler currently depends on gorrilla/mux to get url parts as variables.
+// TODO(@cpuguy83): don't force gorilla/mux on consumers of this function
+func PodExecHandlerFunc(backend remotecommand.Executor) http.HandlerFunc {
+	return func(w http.ResponseWriter, req *http.Request) {
+		vars := mux.Vars(req)
+
+		namespace := vars["namespace"]
+		pod := vars["pod"]
+		container := vars["container"]
+
+		supportedStreamProtocols := strings.Split(req.Header.Get("X-Stream-Protocol-Version"), ",")
+
+		q := req.URL.Query()
+		command := q["command"]
+
+		// TODO: tty flag causes remotecommand.createStreams to wait for the wrong number of streams
+		streamOpts := &remotecommand.Options{
+			Stdin:  true,
+			Stdout: true,
+			Stderr: true,
+			TTY:    false,
+		}
+
+		idleTimeout := time.Second * 30
+		streamCreationTimeout := time.Second * 30
+
+		remotecommand.ServeExec(w, req, backend, fmt.Sprintf("%s-%s", namespace, pod), "", container, command, streamOpts, idleTimeout, streamCreationTimeout, supportedStreamProtocols)
+	}
+}