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Subject [GitHub] [nifi-minifi-cpp] arpadboda commented on a change in pull request #635: MINIFICPP-819 - OPC Unified Architecture Support
Date Wed, 02 Oct 2019 09:32:27 GMT
arpadboda commented on a change in pull request #635: MINIFICPP-819 - OPC Unified Architecture
Support
URL: https://github.com/apache/nifi-minifi-cpp/pull/635#discussion_r330454464
 
 

 ##########
 File path: extensions/opc/include/opc.h
 ##########
 @@ -0,0 +1,152 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+
+#ifndef NIFI_MINIFI_CPP_OPC_H
+#define NIFI_MINIFI_CPP_OPC_H
+
+#include "open62541/client.h"
+#include "open62541/client_highlevel.h"
+#include "open62541/client_config_default.h"
+#include "logging/Logger.h"
+#include "Exception.h"
+
+#include <string>
+#include <functional>
+
+namespace org {
+namespace apache {
+namespace nifi {
+namespace minifi {
+namespace opc {
+
+class OPCException : public minifi::Exception {
+ public:
+  OPCException(ExceptionType type, std::string &&errorMsg)
+  : Exception(type, errorMsg) {
+  }
+};
+
+enum class OPCNodeIDType{ Path, Int, String };
+
+enum class OPCNodeDataType{ Int64, UInt64, Int32, UInt32, Boolean, Float, Double, String
};
+
+struct NodeData;
+
+class Client;
+
+using nodeFoundCallBackFunc = bool(Client& client, const UA_ReferenceDescription*, const
std::string&);
+
+class Client {
+ public:
+  bool isConnected();
+  UA_StatusCode connect(const std::string& url, const std::string& username = "",
const std::string& password = "");
+  ~Client();
+  NodeData getNodeData(const UA_ReferenceDescription *ref, const std::string& basePath
= "");
+  UA_ReferenceDescription * getNodeReference(UA_NodeId nodeId);
+  void traverse(UA_NodeId nodeId, std::function<nodeFoundCallBackFunc> cb, const std::string&
basePath = "", uint32_t maxDepth = 0, bool fetchRoot = true);
+  bool exists(UA_NodeId nodeId);
+  UA_StatusCode translateBrowsePathsToNodeIdsRequest(const std::string& path, std::vector<UA_NodeId>&
foundNodeIDs, const std::shared_ptr<core::logging::Logger>& logger);
+
+  template<typename T>
+  UA_StatusCode update_node(const UA_NodeId nodeId, T value);
+
+  template<typename T>
+  UA_StatusCode add_node(const UA_NodeId parentNodeId, const UA_NodeId targetNodeId, std::string
browseName, T value, OPCNodeDataType dt, UA_NodeId *receivedNodeId);
+
+ private:
+  Client (std::shared_ptr<core::logging::Logger> logger, const std::string& applicationURI,
+      const std::vector<char>& certBuffer, const std::vector<char>& keyBuffer,
+      const std::vector<std::vector<char>>& trustBuffers);
+
+  UA_Client *client_;
+  std::shared_ptr<core::logging::Logger> logger_;
+
+  friend std::unique_ptr<Client> createClient(std::shared_ptr<core::logging::Logger>
logger,
 
 Review comment:
   Good idea, moved there, thanks!

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