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package swift
import (
"io"
"time"
)
// An io.Reader which resets a watchdog timer whenever data is read
type watchdogReader struct {
timeout time.Duration
reader io.Reader
timer *time.Timer
}
// Returns a new reader which will kick the watchdog timer whenever data is read
func newWatchdogReader(reader io.Reader, timeout time.Duration, timer *time.Timer) *watchdogReader {
return &watchdogReader{
timeout: timeout,
reader: reader,
timer: timer,
}
}
// Read reads up to len(p) bytes into p
func (t *watchdogReader) Read(p []byte) (n int, err error) {
// FIXME limit the amount of data read in one chunk so as to not exceed the timeout?
resetTimer(t.timer, t.timeout)
n, err = t.reader.Read(p)
resetTimer(t.timer, t.timeout)
return
}
// Check it satisfies the interface
var _ io.Reader = &watchdogReader{}
|
