oplog

package

v0.0.0-...-bccea44 Latest Latest Go to latest Published: Dec 9, 2017 License: MIT Imports: 4 Imported by: 3

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oplog provides the interface to the in-memory log.

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type OpRequestLog struct {
	Requests []rpc.OpRequest
}

OpRequestLog is the in-memory log to store all the records.

func New() *OpRequestLog

New creates an OpRequestLog.

func (o *OpRequestLog) AppendRequest(ctx context.Context, request *rpc.Request, opNum int) error

AppendRequest appends a request along with its opNum to the log.

func (o *OpRequestLog) ReadLast(ctx context.Context) (*rpc.Request, int, error)

ReadLast returns the last request from the log or an error if the log is empty.

func (o *OpRequestLog) Undo(ctx context.Context)

Undo removes the last record from the log.