Add endpoint for inspecting the MDM command queue (#895)

platform/command/view.go

@@ -0,0 +1,54 @@
+package command
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/go-kit/kit/endpoint"
+	"github.com/gorilla/mux"
+	"github.com/micromdm/micromdm/mdm"
+	"github.com/pkg/errors"
+)
+
+func (svc *CommandService) ViewQueue(ctx context.Context, udid string) ([]*mdm.Command, error) {
+	commands, err := svc.queue.ViewQueue(
+		ctx,
+		mdm.CheckinEvent{Command: mdm.CheckinCommand{UDID: udid}},
+	)
+	if err != nil {
+		return nil, errors.Wrap(err, "clearing command queue")
+	}
+	return commands, nil
+}
+
+type viewQueueRequest struct {
+	UDID string
+}
+
+type viewQueueResponse struct {
+	Err      error          `json:"error,omitempty"`
+	Commands []*mdm.Command `json:"commands,omitempty"`
+}
+
+func (r viewQueueResponse) Failed() error   { return r.Err }
+func (r viewQueueResponse) StatusCode() int { return http.StatusOK }
+
+func decodeViewQueueRequest(ctx context.Context, r *http.Request) (interface{}, error) {
+	return viewQueueRequest{UDID: mux.Vars(r)["udid"]}, nil
+}
+
+// MakeViewQueueEndpoint creates an endpoint which views device queues.
+func MakeViewQueueEndpoint(svc Service) endpoint.Endpoint {
+	return func(ctx context.Context, request interface{}) (interface{}, error) {
+		req := request.(viewQueueRequest)
+		if req.UDID == "" {
+			return viewQueueResponse{Err: errEmptyRequest}, nil
+		}
+		commands, err := svc.ViewQueue(ctx, req.UDID)
+		if err != nil {
+			return viewQueueResponse{Err: err}, nil
+		}
+
+		return viewQueueResponse{Commands: commands}, nil
+	}
+}