88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#ifndef DORIS_BE_SRC_RUNTIME_EXPORT_SINK_H
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#define DORIS_BE_SRC_RUNTIME_EXPORT_SINK_H
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#include <vector>
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#include "common/status.h"
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#include "exec/data_sink.h"
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#include "util/runtime_profile.h"
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namespace doris {
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class RowDescriptor;
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class TExpr;
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class RuntimeState;
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class RuntimeProfile;
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class ExprContext;
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class MemTracker;
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class FileWriter;
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class TupleRow;
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// This class is a sinker, which put export data to external storage by broker.
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class ExportSink : public DataSink {
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public:
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ExportSink(ObjectPool* pool, const RowDescriptor& row_desc, const std::vector<TExpr>& t_exprs);
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virtual ~ExportSink();
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virtual Status init(const TDataSink& thrift_sink) override;
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virtual Status prepare(RuntimeState* state) override;
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virtual Status open(RuntimeState* state) override;
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virtual Status send(RuntimeState* state, RowBatch* batch) override;
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// Flush all buffered data and close all existing channels to destination
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// hosts. Further send() calls are illegal after calling close().
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virtual Status close(RuntimeState* state, Status exec_status) override;
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virtual RuntimeProfile* profile() { return _profile; }
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private:
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Status open_file_writer();
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Status gen_row_buffer(TupleRow* row, std::stringstream* ss);
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std::string gen_file_name();
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RuntimeState* _state;
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// owned by RuntimeState
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ObjectPool* _pool;
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const RowDescriptor& _row_desc;
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const std::vector<TExpr>& _t_output_expr;
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std::vector<ExprContext*> _output_expr_ctxs;
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TExportSink _t_export_sink;
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std::unique_ptr<FileWriter> _file_writer;
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RuntimeProfile* _profile;
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std::shared_ptr<MemTracker> _mem_tracker;
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RuntimeProfile::Counter* _bytes_written_counter;
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RuntimeProfile::Counter* _rows_written_counter;
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RuntimeProfile::Counter* _write_timer;
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};
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} // end namespace doris
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#endif // DORIS_BE_SRC_RUNTIME_EXPORT_SINK_H
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