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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespafeeder;
import com.yahoo.clientmetrics.MessageTypeMetricSet;
import com.yahoo.clientmetrics.RouteMetricSet;
import com.yahoo.concurrent.Timer;
import com.yahoo.metrics.Metric;
import com.yahoo.metrics.MetricSet;
import com.yahoo.metrics.MetricVisitor;
import com.yahoo.metrics.SumMetric;
import java.io.IOException;
import java.io.PrintStream;
import java.math.RoundingMode;
import java.text.NumberFormat;
import java.util.Locale;
/**
* Class that takes progress from the feed and prints to a stream.
*/
public class ProgressPrinter implements RouteMetricSet.ProgressCallback {
private long startTime = 0;
private long lastProgressTime = 0;
private long lastVerboseProgress = 0;
final Timer timer;
final PrintStream output;
public ProgressPrinter(Timer timer, PrintStream output) {
this.timer = timer;
this.output = output;
startTime = timer.milliTime();
lastProgressTime = startTime;
lastVerboseProgress = startTime;
}
class PrintVisitor extends MetricVisitor {
final PrintStream out;
final NumberFormat format;
PrintVisitor(PrintStream out) {
this.out = out;
format = NumberFormat.getNumberInstance(Locale.US);
format.setMaximumFractionDigits(2);
format.setMinimumFractionDigits(2);
format.setMinimumIntegerDigits(1);
format.setParseIntegerOnly(false);
format.setRoundingMode(RoundingMode.HALF_UP);
format.setGroupingUsed(false);
}
@Override
public boolean visitMetricSet(MetricSet set, boolean autoGenerated) {
if (set instanceof MessageTypeMetricSet && !set.getName().equals("total")) {
Metric m = set.getMetric("latency");
Metric count = set.getMetric("count");
Metric err = set.getMetric("errors.total");
long okCount = 0, errCount = 0, ignored = 0;
long minLatency = 0, maxLatency = 0, avgLatency = 0;
if (m != null) {
minLatency = m.getLongValue("min");
maxLatency = m.getLongValue("max");
avgLatency = m.getLongValue("average");
}
if (count != null) {
okCount = count.getLongValue("count");
}
Metric ignoredMetric = set.getMetric("ignored");
if (ignoredMetric != null) {
ignored = ignoredMetric.getLongValue("count");
}
if (err != null) {
errCount = err.getLongValue("count");
}
long timeSinceStart = timer.milliTime() - startTime;
out.println(((MessageTypeMetricSet)set).getMessageName() + ":\t" +
"ok: " + okCount +
" msgs/sec: " + format.format((double)okCount * 1000 / timeSinceStart) +
" failed: " + errCount +
" ignored: " + ignored +
" latency(min, max, avg): " + minLatency + ", " + maxLatency + ", " + avgLatency);
}
return true;
}
}
public static String getDashes(int count) {
String dashes = "";
for (int i = 0; i < count; i++) {
dashes += "-";
}
return dashes;
}
public synchronized void renderStatusText(RouteMetricSet metrics, PrintStream stream) throws IOException {
String headline = "Messages sent to vespa (route " + metrics.getName() + ") :";
stream.println(headline);
stream.println(getDashes(headline.length()));
metrics.visit(new PrintVisitor(stream), false);
}
public long getOkMessageCount(RouteMetricSet metrics) {
SumMetric sum = (SumMetric)metrics.getMetric("total");
MetricSet ms = (MetricSet)sum.generateSum();
if (ms != null) {
Metric latency = ms.getMetric("latency");
if (latency != null) {
return latency.getLongValue("count");
}
}
return 0;
}
@Override
public void onProgress(RouteMetricSet metrics) {
try {
long timeNow = timer.milliTime();
if (timeNow - lastVerboseProgress > 30000) {
output.println("\n");
renderStatusText(metrics, output);
lastVerboseProgress = timeNow;
} else if (timeNow - lastProgressTime > 1000) {
output.print("\rSuccessfully sent " + getOkMessageCount(metrics) + " messages so far");
lastProgressTime = timeNow;
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void done(RouteMetricSet metrics) {
try {
output.println("\n");
renderStatusText(metrics, output);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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