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package me.lucko.spark.profiler;
import java.util.Timer;
import java.util.concurrent.TimeUnit;
/**
* Builds {@link Sampler} instances.
*/
public class SamplerBuilder {
private int samplingInterval = 4;
private long timeout = -1;
private ThreadDumper threadDumper = ThreadDumper.ALL;
private ThreadGrouper threadGrouper = ThreadGrouper.BY_NAME;
private int ticksOver = -1;
private TickCounter tickCounter = null;
public SamplerBuilder() {
}
public SamplerBuilder samplingInterval(int samplingInterval) {
this.samplingInterval = samplingInterval;
return this;
}
public SamplerBuilder completeAfter(long timeout, TimeUnit unit) {
if (timeout <= 0) {
throw new IllegalArgumentException("timeout > 0");
}
this.timeout = System.currentTimeMillis() + unit.toMillis(timeout);
return this;
}
public SamplerBuilder threadDumper(ThreadDumper threadDumper) {
this.threadDumper = threadDumper;
return this;
}
public SamplerBuilder threadGrouper(ThreadGrouper threadGrouper) {
this.threadGrouper = threadGrouper;
return this;
}
public SamplerBuilder ticksOver(int ticksOver, TickCounter tickCounter) {
this.ticksOver = ticksOver;
this.tickCounter = tickCounter;
return this;
}
public Sampler start(Timer samplingThread) {
Sampler sampler;
if (this.ticksOver != -1 && this.tickCounter != null) {
sampler = new Sampler(this.samplingInterval, this.threadDumper, this.threadGrouper, this.timeout, this.tickCounter, this.ticksOver);
} else {
sampler = new Sampler(this.samplingInterval, this.threadDumper, this.threadGrouper, this.timeout);
}
sampler.start(samplingThread);
return sampler;
}
}
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