Node abstraction layer

Change-Id: I3cbad5b566cd005d33a9fbd18ff4e6669dae3a31
Signed-off-by: Borawski.Lukasz <lukasz.borawski@intel.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/redfish-core/include/node.hpp b/redfish-core/include/node.hpp
new file mode 100644
index 0000000000..46b37d970d
--- /dev/null
+++ b/redfish-core/include/node.hpp
@@ -0,0 +1,115 @@
+/*
+// Copyright (c) 2018 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+#pragma once
+
+#include "crow.h"
+#include "privileges.hpp"
+#include "token_authorization_middleware.hpp"
+
+namespace redfish {
+
+/**
+ * @brief  Abstract class used for implementing Redfish nodes.
+ *
+ */
+class Node {
+ public:
+  template <typename CrowApp, typename... Params>
+  Node(CrowApp& app, PrivilegeProvider& provider, std::string odataType,
+       std::string odataId, Params... params)
+      : odataType(odataType), odataId(odataId) {
+
+    // privileges for the node as defined in the privileges_registry.json
+    entityPrivileges = provider.getPrivileges(odataId, odataType);
+
+    app.route_dynamic(std::move(odataId))
+        .methods("GET"_method, "PATCH"_method, "POST"_method,
+                 "DELETE"_method)([&](const crow::request& req,
+                                      crow::response& res, Params... params) {
+          std::vector<std::string> paramVec = {params...};
+          dispatchRequest(app, req, res, paramVec);
+        });
+  }
+
+  template <typename CrowApp>
+  void dispatchRequest(CrowApp& app, const crow::request& req,
+                       crow::response& res,
+                       const std::vector<std::string>& params) {
+    // drop requests without required privileges
+    auto ctx =
+        app.template get_context<crow::TokenAuthorization::Middleware>(req);
+
+    if (!entityPrivileges.isMethodAllowed(req.method, ctx.session->username)) {
+      res.code = static_cast<int>(HttpRespCode::METHOD_NOT_ALLOWED);
+      res.end();
+      return;
+    }
+
+    switch (req.method) {
+      case "GET"_method:
+        doGet(res, req, params);
+        break;
+
+      case "PATCH"_method:
+        doPatch(res, req, params);
+        break;
+
+      case "POST"_method:
+        doPost(res, req, params);
+        break;
+
+      case "DELETE"_method:
+        doDelete(res, req, params);
+        break;
+
+      default:
+        res.code = static_cast<int>(HttpRespCode::NOT_FOUND);
+        res.end();
+    }
+    return;
+  }
+
+ protected:
+  const std::string odataType;
+  const std::string odataId;
+
+  // Node is designed to be an abstract class, so doGet is pure virutal
+  virtual void doGet(crow::response& res, const crow::request& req,
+                     const std::vector<std::string>& params) = 0;
+
+  virtual void doPatch(crow::response& res, const crow::request& req,
+                       const std::vector<std::string>& params) {
+    res.code = static_cast<int>(HttpRespCode::METHOD_NOT_ALLOWED);
+    res.end();
+  }
+
+  virtual void doPost(crow::response& res, const crow::request& req,
+                      const std::vector<std::string>& params) {
+    res.code = static_cast<int>(HttpRespCode::METHOD_NOT_ALLOWED);
+    res.end();
+  }
+
+  virtual void doDelete(crow::response& res, const crow::request& req,
+                        const std::vector<std::string>& params) {
+    res.code = static_cast<int>(HttpRespCode::METHOD_NOT_ALLOWED);
+    res.end();
+  }
+
+  EntityPrivileges entityPrivileges;
+};
+
+}  // namespace redfish
+