Github user minifirocks commented on a diff in the pull request:

    https://github.com/apache/nifi-minifi-cpp/pull/295#discussion_r179779744
  
    --- Diff: libminifi/include/core/MetaInfo.h ---
    @@ -0,0 +1,180 @@
    +/**
    + *
    + * 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 __META_INFO_H__
    +#define __META_INFO_H__
    +
    +#include <algorithm>
    +#include <sstream>
    +#include <string>
    +#include <map>
    +#include <mutex>
    +#include <atomic>
    +#include <functional>
    +#include <set>
    +#include <stdlib.h>
    +#include <math.h>
    +#include "utils/StringUtils.h"
    +#include "core/FlowFile.h"
    +#include "core/state/metrics/DeviceInformation.h"
    +
    +namespace org {
    +namespace apache {
    +namespace nifi {
    +namespace minifi {
    +namespace core {
    +
    +// MetaInfo Class
    +class MetaInfo {
    +
    + public:
    +  // Constructor
    +  /*!
    +   * Create a new meta info
    +   */
    +  explicit MetaInfo(const std::string &name, const std::string &value)
    +      : name_(name),
    +        value_(value) {
    +  }
    +
    +  // Destructor
    +  virtual ~MetaInfo() {
    +  }
    +
    +  // Get Name for the meta info
    +  std::string getName() {
    +    return name_;
    +  }
    +  // Get value for the meta info, overwritten by specific child meta info
    +  virtual std::string getValue(const std::shared_ptr<core::FlowFile> 
&flow) {
    +    return value_;
    +  }
    +
    + protected:
    +  // Name
    +  std::string name_;
    +  // Value
    +  std::string value_;
    +
    + private:
    +};
    +
    +#ifdef MINIFI_VERSION
    --- End diff --
    
    will do


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