/
ThrottledSink.kt
52 lines (47 loc) · 1.48 KB
/
ThrottledSink.kt
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/*
* Copyright (c) 2022 Block, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package mockwebserver3.internal
import okio.Buffer
import okio.Sink
/**
* A sink that sleeps [periodDelayNanos] every [bytesPerPeriod] bytes. Unlike [okio.Throttler],
* this permits any interval to be used.
*/
internal class ThrottledSink(
private val delegate: Sink,
private val bytesPerPeriod: Long,
private val periodDelayNanos: Long,
) : Sink by delegate {
private var bytesWrittenSinceLastDelay = 0L
override fun write(
source: Buffer,
byteCount: Long,
) {
var bytesLeft = byteCount
while (bytesLeft > 0) {
if (bytesWrittenSinceLastDelay == bytesPerPeriod) {
flush()
sleepNanos(periodDelayNanos)
bytesWrittenSinceLastDelay = 0
}
val toWrite = minOf(bytesLeft, bytesPerPeriod - bytesWrittenSinceLastDelay)
bytesWrittenSinceLastDelay += toWrite
bytesLeft -= toWrite
delegate.write(source, toWrite)
}
}
}