jldb/lib/wal/design.go

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2023-10-13 09:43:27 +00:00
package wal
import (
"time"
)
type Info struct {
FirstSeqNum int64
LastSeqNum int64
LastTimestampMS int64
}
type Iterator interface {
// Next will return false if no record is available during the timeout
// period, or if an error is encountered. After Next returns false, the
// caller should check the return value of the Error function.
Next(timeout time.Duration) bool
// Call Record after Next returns true to get the next record.
Record() Record
// The caller must call Close on the iterator so clean-up can be performed.
Close()
// Call Error to see if there was an error during the previous call to Next
// if Next returned false.
Error() error
}