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/*
* This file is part of spark.
*
* Copyright (c) lucko (Luck) <luck@lucko.me>
* Copyright (c) contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package me.lucko.spark.common.api;
import com.google.common.collect.ImmutableMap;
import me.lucko.spark.api.Spark;
import me.lucko.spark.api.SparkProvider;
import me.lucko.spark.api.gc.GarbageCollector;
import me.lucko.spark.api.statistic.misc.DoubleAverageInfo;
import me.lucko.spark.api.statistic.types.DoubleStatistic;
import me.lucko.spark.api.statistic.types.GenericStatistic;
import me.lucko.spark.common.SparkPlatform;
import me.lucko.spark.common.monitor.cpu.CpuMonitor;
import me.lucko.spark.common.monitor.memory.GarbageCollectorStatistics;
import me.lucko.spark.common.monitor.tick.TickStatistics;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import static me.lucko.spark.api.statistic.StatisticWindow.CpuUsage;
import static me.lucko.spark.api.statistic.StatisticWindow.MillisPerTick;
import static me.lucko.spark.api.statistic.StatisticWindow.TicksPerSecond;
public class SparkApi implements Spark {
private static final Method SINGLETON_SET_METHOD;
static {
try {
SINGLETON_SET_METHOD = SparkProvider.class.getDeclaredMethod("set", Spark.class);
SINGLETON_SET_METHOD.setAccessible(true);
} catch (ReflectiveOperationException e) {
throw new RuntimeException(e);
}
}
private final SparkPlatform platform;
public SparkApi(SparkPlatform platform) {
this.platform = platform;
}
@Override
public @NonNull DoubleStatistic<CpuUsage> cpuProcess() {
return new AbstractStatistic.Double<CpuUsage>(
"CPU Process Usage", CpuUsage.class
) {
@Override
public double poll(@NonNull CpuUsage window) {
switch (window) {
case SECONDS_10:
return CpuMonitor.processLoad10SecAvg();
case MINUTES_1:
return CpuMonitor.processLoad1MinAvg();
case MINUTES_15:
return CpuMonitor.processLoad15MinAvg();
default:
throw new AssertionError(window);
}
}
};
}
@Override
public @NonNull DoubleStatistic<CpuUsage> cpuSystem() {
return new AbstractStatistic.Double<CpuUsage>(
"CPU System Usage", CpuUsage.class
) {
@Override
public double poll(@NonNull CpuUsage window) {
switch (window) {
case SECONDS_10:
return CpuMonitor.systemLoad10SecAvg();
case MINUTES_1:
return CpuMonitor.systemLoad1MinAvg();
case MINUTES_15:
return CpuMonitor.systemLoad15MinAvg();
default:
throw new AssertionError(window);
}
}
};
}
@Override
public @Nullable DoubleStatistic<TicksPerSecond> tps() {
TickStatistics stats = this.platform.getTickStatistics();
if (stats == null) {
return null;
}
return new AbstractStatistic.Double<TicksPerSecond>(
"Ticks Per Second", TicksPerSecond.class
) {
@Override
public double poll(@NonNull TicksPerSecond window) {
switch (window) {
case SECONDS_5:
return stats.tps5Sec();
case SECONDS_10:
return stats.tps10Sec();
case MINUTES_1:
return stats.tps1Min();
case MINUTES_5:
return stats.tps5Min();
case MINUTES_15:
return stats.tps15Min();
default:
throw new AssertionError(window);
}
}
};
}
@Override
public @Nullable GenericStatistic<DoubleAverageInfo, MillisPerTick> mspt() {
TickStatistics stats = this.platform.getTickStatistics();
if (stats == null || !stats.isDurationSupported()) {
return null;
}
return new AbstractStatistic.Generic<DoubleAverageInfo, MillisPerTick>(
"Milliseconds Per Tick", DoubleAverageInfo.class, MillisPerTick.class
) {
@Override
public DoubleAverageInfo poll(@NonNull MillisPerTick window) {
switch (window) {
case SECONDS_10:
return stats.duration10Sec();
case MINUTES_1:
return stats.duration1Min();
case MINUTES_5:
return stats.duration5Min();
default:
throw new AssertionError(window);
}
}
};
}
@Override
public @NonNull Map<String, GarbageCollector> gc() {
long serverUptime = System.currentTimeMillis() - this.platform.getServerNormalOperationStartTime();
Map<String, GarbageCollectorStatistics> stats = GarbageCollectorStatistics.pollStatsSubtractInitial(
this.platform.getStartupGcStatistics()
);
Map<String, GarbageCollector> map = new HashMap<>(stats.size());
for (Map.Entry<String, GarbageCollectorStatistics> entry : stats.entrySet()) {
map.put(entry.getKey(), new GarbageCollectorInfo(entry.getKey(), entry.getValue(), serverUptime));
}
return ImmutableMap.copyOf(map);
}
public static void register(Spark spark) {
try {
SINGLETON_SET_METHOD.invoke(null, spark);
} catch (ReflectiveOperationException e) {
e.printStackTrace();
}
}
public static void unregister() {
try {
SINGLETON_SET_METHOD.invoke(null, new Object[]{null});
} catch (ReflectiveOperationException e) {
e.printStackTrace();
}
}
}
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