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43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#pragma once
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#include "config_formats.h"
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#if USE_PROTOBUF
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#include <DataTypes/IDataType.h>
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#include <Processors/Formats/IRowInputFormat.h>
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#include <Formats/ProtobufReader.h>
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namespace DB
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{
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class Block;
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class FormatSchemaInfo;
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/** Stream designed to deserialize data from the google protobuf format.
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* Each row is read as a separated message.
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* These messages are delimited according to documentation
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* https://github.com/protocolbuffers/protobuf/blob/master/src/google/protobuf/util/delimited_message_util.h
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* Serializing in the protobuf format requires the 'format_schema' setting to be set, e.g.
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* INSERT INTO table FORMAT Protobuf SETTINGS format_schema = 'schema:Message'
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* where schema is the name of "schema.proto" file specifying protobuf schema.
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*/
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class ProtobufRowInputFormat : public IRowInputFormat
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{
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public:
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ProtobufRowInputFormat(ReadBuffer & in_, const Block & header_, Params params_, const FormatSchemaInfo & info_);
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~ProtobufRowInputFormat() override;
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String getName() const override { return "ProtobufRowInputFormat"; }
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bool readRow(MutableColumns & columns, RowReadExtension & extra) override;
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bool allowSyncAfterError() const override;
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void syncAfterError() override;
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private:
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DataTypes data_types;
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ProtobufReader reader;
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};
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}
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#endif
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