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324.1.1
by Mats Kindahl
Adding specification of a simple protobuf-based binary log format, |
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// -*- Mode: C++ -*-
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#ifndef BINARY_LOG_H_INCLUDED
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#define BINARY_LOG_H_INCLUDED
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#include "binary_log.pb.h" |
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#include "binlog_encoding.h" |
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#include <google/protobuf/io/zero_copy_stream.h> |
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#include <iosfwd> |
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#include <stdexcept> |
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namespace BinaryLog { |
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using namespace google::protobuf; |
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using namespace google::protobuf::io; |
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/**
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Wrapper class to wrap a protobuf event in a type tag and a length.
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The type tag is not part of the actual message, but is handled
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separately since it is needed to decode the events.
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*/
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class Event { |
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public: |
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enum EventType { |
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UNDEF, |
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START, |
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CHAIN, |
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COMMIT, |
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ROLLBACK, |
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QUERY, |
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COUNT
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};
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Event(EventType type, Message *message) |
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: m_type(type), m_message(message) |
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{
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}
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Event() |
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: m_type(UNDEF), m_message(0) |
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{
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}
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~Event() { |
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delete m_message; |
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}
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bool write(CodedOutputStream* out) const; |
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void print(std::ostream& out) const; |
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bool read(CodedInputStream* in); |
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private: |
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EventType m_type; |
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Message *m_message; |
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};
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}
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#endif /* BINARY_LOG_H_INCLUDED */ |