diff options
Diffstat (limited to 'container-search/src/main/java/com/yahoo/search/dispatch/RequestDuration.java')
-rw-r--r-- | container-search/src/main/java/com/yahoo/search/dispatch/RequestDuration.java | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/dispatch/RequestDuration.java b/container-search/src/main/java/com/yahoo/search/dispatch/RequestDuration.java new file mode 100644 index 00000000000..1206277a103 --- /dev/null +++ b/container-search/src/main/java/com/yahoo/search/dispatch/RequestDuration.java @@ -0,0 +1,43 @@ +// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. +package com.yahoo.search.dispatch; + +import java.time.Duration; +import java.time.Instant; + +/** + * Contains start and and time. Exposes a duration, and lets you measure the time difference between 2 requests. + * It does use System.nanoTime to get a steady clock. + * + * @author baldersheim + */ +class RequestDuration { + private final long startTime; + private long endTime; + RequestDuration() { + this(System.nanoTime()); + } + private RequestDuration(long startTime) { + this.startTime = startTime; + } + + RequestDuration complete() { + endTime = System.nanoTime(); + return this; + } + private RequestDuration complete(long duration) { + endTime = startTime + duration; + return this; + } + Duration duration() { + return Duration.ofNanos(endTime - startTime); + } + Duration difference(RequestDuration prev) { + return Duration.ofNanos(Math.abs(endTime - prev.endTime)); + } + static RequestDuration of(Duration duration) { + return new RequestDuration().complete(duration.toNanos()); + } + static RequestDuration of(Instant sinceEpoch, Duration duration) { + return new RequestDuration(sinceEpoch.toEpochMilli()*1_000_000).complete(duration.toNanos()); + } +} |