Use ndn::mgmt::Dispatcher for repo commands

refs #4129

Change-Id: Idb7826fc76b6660ce76d69e7e88a9e922c55a2e1
diff --git a/src/handles/command-base-handle.hpp b/src/handles/command-base-handle.hpp
new file mode 100644
index 0000000..205b884
--- /dev/null
+++ b/src/handles/command-base-handle.hpp
@@ -0,0 +1,84 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2018, Regents of the University of California.
+ *
+ * This file is part of NDN repo-ng (Next generation of NDN repository).
+ * See AUTHORS.md for complete list of repo-ng authors and contributors.
+ *
+ * repo-ng is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * repo-ng is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * repo-ng, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef REPO_HANDLES_COMMAND_BASE_HANDLE_HPP
+#define REPO_HANDLES_COMMAND_BASE_HANDLE_HPP
+
+#include "common.hpp"
+
+#include "storage/repo-storage.hpp"
+#include "repo-command-response.hpp"
+#include "repo-command-parameter.hpp"
+#include "repo-command.hpp"
+
+#include <ndn-cxx/mgmt/dispatcher.hpp>
+
+namespace repo {
+
+class CommandBaseHandle
+{
+public:
+  class Error : public std::runtime_error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : std::runtime_error(what)
+    {
+    }
+  };
+
+public:
+  CommandBaseHandle(Face& face, RepoStorage& storageHandle,
+                    Scheduler& scheduler, Validator& validator);
+
+  virtual
+  ~CommandBaseHandle() = default;
+
+  ndn::mgmt::Authorization
+  makeAuthorization();
+
+  template<typename T>
+  bool
+  validateParameters(const ndn::mgmt::ControlParameters& parameters)
+  {
+    const RepoCommandParameter* castParams =
+      dynamic_cast<const RepoCommandParameter*>(&parameters);
+    BOOST_ASSERT(castParams != nullptr);
+    T command;
+    try {
+      command.validateRequest(*castParams);
+    }
+    catch (const RepoCommand::ArgumentError& ae) {
+      return false;
+    }
+    return true;
+  }
+
+protected:
+  Face& face;
+  RepoStorage& storageHandle;
+  Scheduler& scheduler;
+
+private:
+  Validator& m_validator;
+};
+} // namespace repo
+
+#endif // REPO_HANDLES_COMMAND_BASE_HANDLE_HPP
\ No newline at end of file