heron/stmgr/src/cpp/manager/stream-consumers.h

/*
 * Copyright 2015 Twitter, Inc.
 *
 * 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.
 */

#ifndef SRC_CPP_SVCS_STMGR_SRC_MANAGER_STREAM_CONSUMERS_H_
#define SRC_CPP_SVCS_STMGR_SRC_MANAGER_STREAM_CONSUMERS_H_

#include <list>
#include <vector>
#include <typeinfo>   // operator typeid
#include "proto/messages.h"
#include "network/network.h"
#include "basics/basics.h"
#include "grouping/shuffle-grouping.h"

namespace heron {
namespace stmgr {

class Grouping;
class ShuffleGrouping;

class StreamConsumers {
 public:
  StreamConsumers(const proto::api::InputStream& _is, const proto::api::StreamSchema& _schema,
                  const std::vector<sp_int32>& _task_ids);
  virtual ~StreamConsumers();

  void NewConsumer(const proto::api::InputStream& _is, const proto::api::StreamSchema& _schema,
                   const std::vector<sp_int32>& _task_ids);

  void GetListToSend(const proto::system::HeronDataTuple& _tuple, std::vector<sp_int32>& _return);

  inline bool isShuffleGrouping() {
    ShuffleGrouping* grouping = dynamic_cast<ShuffleGrouping *>(consumers_.front());

    if (consumers_.size() == 1 && grouping != nullptr) {
      return true;
    }
    return false;
  }

 private:
  std::list<Grouping*> consumers_;
};

}  // namespace stmgr
}  // namespace heron

#endif  // SRC_CPP_SVCS_STMGR_SRC_MANAGER_STREAM_CONSUMERS_H_