| /* |
| * 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. |
| */ |
| |
| #include "grouping/fields-grouping.h" |
| #include <iostream> |
| #include <list> |
| #include <vector> |
| #include "grouping/grouping.h" |
| #include "proto/messages.h" |
| #include "basics/basics.h" |
| #include "errors/errors.h" |
| #include "threads/threads.h" |
| #include "network/network.h" |
| |
| namespace heron { |
| namespace stmgr { |
| |
| FieldsGrouping::FieldsGrouping(const proto::api::InputStream& _is, |
| const proto::api::StreamSchema& _schema, |
| const std::vector<sp_int32>& _task_ids) |
| : Grouping(_task_ids) { |
| for (sp_int32 i = 0; i < _schema.keys_size(); ++i) { |
| for (sp_int32 j = 0; j < _is.grouping_fields().keys_size(); ++j) { |
| if (_schema.keys(i).key() == _is.grouping_fields().keys(j).key()) { |
| fields_grouping_indices_.push_back(i); |
| break; |
| } |
| } |
| } |
| } |
| |
| FieldsGrouping::~FieldsGrouping() {} |
| |
| void FieldsGrouping::GetListToSend(const proto::system::HeronDataTuple& _tuple, |
| std::vector<sp_int32>& _return) { |
| sp_int32 task_index = 0; |
| size_t prime_num = 633910111UL; |
| for (auto iter = fields_grouping_indices_.begin(); |
| iter != fields_grouping_indices_.end(); ++iter) { |
| CHECK(_tuple.values_size() > *iter); |
| size_t h = str_hash_fn(_tuple.values(*iter)); |
| task_index += (h % prime_num); |
| } |
| task_index = task_index % task_ids_.size(); |
| _return.push_back(task_ids_[task_index]); |
| } |
| |
| } // namespace stmgr |
| } // namespace heron |