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https://github.com/codership/wsrep-lib.git
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Support for detaching prepared XA transactions
Add support for detaching XA transactions. This is useful for handling the case where the DBMS client has a transaction in prepared state and disconnects. Before disconnect, the DBMS calls the newly introduced client_state::xa_detach(), to cleanup the local transaction and convert it to a high priority transaction. The DBMS may later attempt to terminate the transaction through client_state::commit_by_xid() or client_state::rollback_by_xid(). Also in this patch: - Fix client_state::close() so that it does not rollback transactions in prepared state - Changed class wsrep::xid representation to hold enough information so that DBMS can convert to its native representation - Fix potential infinite loop in server_state::find_streaming_applier(wsrep:xid&) - Append SR keys on prepare fragment and make it pa_unsafe - Handle one phase commit (simply fall back to two phase) - Do not rollback prepared streaming clients in server_state::close_orphaned_transactions()
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@ -66,6 +66,10 @@ namespace wsrep
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: buffer_()
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{ }
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mutable_buffer(const mutable_buffer& b)
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: buffer_(b.buffer_)
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{ }
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void resize(size_t s) { buffer_.resize(s); }
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void clear()
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@ -111,6 +115,11 @@ namespace wsrep
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buffer_ = other.buffer_;
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return *this;
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}
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bool operator==(const mutable_buffer& other) const
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{
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return buffer_ == other.buffer_;
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}
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private:
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std::vector<char> buffer_;
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};
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