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  • Committer: Monty Taylor
  • Date: 2008-11-16 06:29:53 UTC
  • mto: (584.1.9 devel)
  • mto: This revision was merged to the branch mainline in revision 589.
  • Revision ID: monty@inaugust.com-20081116062953-ivdltjmfe009b5fr
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drizzled/serialize/binary_log.h
 
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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 */