MinecraftServerStatistics.java

net.minecraft.util.monitoring.jmx.MinecraftServerStatistics

信息

• 全限定名：net.minecraft.util.monitoring.jmx.MinecraftServerStatistics
• 类型：public final class
• 包：net.minecraft.util.monitoring.jmx
• 源码路径：src/main/java/net/minecraft/util/monitoring/jmx/MinecraftServerStatistics.java
• 起始行号：L28
• 实现：DynamicMBean
• 职责：

  TODO

字段/常量

• LOGGER

  • 类型: Logger
  • 修饰符: private static final
  • 源码定位: L29
  • 说明:

    TODO

• server

  • 类型: MinecraftServer
  • 修饰符: private final
  • 源码定位: L30
  • 说明:

    TODO

• mBeanInfo

  • 类型: MBeanInfo
  • 修饰符: private final
  • 源码定位: L31
  • 说明:

    TODO

• attributeDescriptionByName

  • 类型: Map<String,MinecraftServerStatistics.AttributeDescription>
  • 修饰符: private final
  • 源码定位: L32
  • 说明:

    TODO

内部类/嵌套类型

• net.minecraft.util.monitoring.jmx.MinecraftServerStatistics.AttributeDescription
  • 类型: class
  • 修饰符: private static final
  • 源码定位: L101
  • 说明:

    TODO

构造器

private MinecraftServerStatistics(MinecraftServer server) @ L38

• 构造器名：MinecraftServerStatistics
• 源码定位：L38
• 修饰符：private

参数:

• server: MinecraftServer

说明:

TODO

方法

下面的方法块按源码顺序生成。

public static void registerJmxMonitoring(MinecraftServer server) @ L50

• 方法名：registerJmxMonitoring
• 源码定位：L50
• 返回类型：void
• 修饰符：public static

参数:

• server: MinecraftServer

说明:

TODO

private float getAverageTickTime() @ L58

• 方法名：getAverageTickTime
• 源码定位：L58
• 返回类型：float
• 修饰符：private

参数:

• 无

说明:

TODO

private long[] getTickTimes() @ L62

• 方法名：getTickTimes
• 源码定位：L62
• 返回类型：long[]
• 修饰符：private

参数:

• 无

说明:

TODO

public Object getAttribute(String attribute) @ L66

• 方法名：getAttribute
• 源码定位：L66
• 返回类型：Object
• 修饰符：public

参数:

• attribute: String

说明:

TODO

public void setAttribute(Attribute attribute) @ L72

• 方法名：setAttribute
• 源码定位：L72
• 返回类型：void
• 修饰符：public

参数:

• attribute: Attribute

说明:

TODO

public AttributeList getAttributes(String[] attributes) @ L76

• 方法名：getAttributes
• 源码定位：L76
• 返回类型：AttributeList
• 修饰符：public

参数:

• attributes: String[]

说明:

TODO

public AttributeList setAttributes(AttributeList attributes) @ L86

• 方法名：setAttributes
• 源码定位：L86
• 返回类型：AttributeList
• 修饰符：public

参数:

• attributes: AttributeList

说明:

TODO

public Object invoke(String actionName, Object[] params, String[] signature) @ L91

• 方法名：invoke
• 源码定位：L91
• 返回类型：Object
• 修饰符：public

参数:

• actionName: String
• params: Object[]
• signature: String[]

说明:

TODO

public MBeanInfo getMBeanInfo() @ L96

• 方法名：getMBeanInfo
• 源码定位：L96
• 返回类型：MBeanInfo
• 修饰符：public

参数:

• 无

说明:

TODO

代码

public final class MinecraftServerStatistics implements DynamicMBean {
    private static final Logger LOGGER = LogUtils.getLogger();
    private final MinecraftServer server;
    private final MBeanInfo mBeanInfo;
    private final Map<String, MinecraftServerStatistics.AttributeDescription> attributeDescriptionByName = Stream.of(
            new MinecraftServerStatistics.AttributeDescription("tickTimes", this::getTickTimes, "Historical tick times (ms)", long[].class),
            new MinecraftServerStatistics.AttributeDescription("averageTickTime", this::getAverageTickTime, "Current average tick time (ms)", long.class)
        )
        .collect(Collectors.toMap(attributeDescription -> attributeDescription.name, Function.identity()));
 
    private MinecraftServerStatistics(MinecraftServer server) {
        this.server = server;
        MBeanAttributeInfo[] mBeanAttributeInfos = this.attributeDescriptionByName
            .values()
            .stream()
            .map(MinecraftServerStatistics.AttributeDescription::asMBeanAttributeInfo)
            .toArray(MBeanAttributeInfo[]::new);
        this.mBeanInfo = new MBeanInfo(
            MinecraftServerStatistics.class.getSimpleName(), "metrics for dedicated server", mBeanAttributeInfos, null, null, new MBeanNotificationInfo[0]
        );
    }
 
    public static void registerJmxMonitoring(MinecraftServer server) {
        try {
            ManagementFactory.getPlatformMBeanServer().registerMBean(new MinecraftServerStatistics(server), new ObjectName("net.minecraft.server:type=Server"));
        } catch (InstanceAlreadyExistsException | MBeanRegistrationException | NotCompliantMBeanException | MalformedObjectNameException var2) {
            LOGGER.warn("Failed to initialise server as JMX bean", (Throwable)var2);
        }
    }
 
    private float getAverageTickTime() {
        return this.server.getCurrentSmoothedTickTime();
    }
 
    private long[] getTickTimes() {
        return this.server.getTickTimesNanos();
    }
 
    @Override
    public @Nullable Object getAttribute(String attribute) {
        MinecraftServerStatistics.AttributeDescription attributeDescription = this.attributeDescriptionByName.get(attribute);
        return attributeDescription == null ? null : attributeDescription.getter.get();
    }
 
    @Override
    public void setAttribute(Attribute attribute) {
    }
 
    @Override
    public AttributeList getAttributes(String[] attributes) {
        List<Attribute> attributeList = Arrays.stream(attributes)
            .map(this.attributeDescriptionByName::get)
            .filter(Objects::nonNull)
            .map(attributeDescription -> new Attribute(attributeDescription.name, attributeDescription.getter.get()))
            .collect(Collectors.toList());
        return new AttributeList(attributeList);
    }
 
    @Override
    public AttributeList setAttributes(AttributeList attributes) {
        return new AttributeList();
    }
 
    @Override
    public @Nullable Object invoke(String actionName, Object[] params, String[] signature) {
        return null;
    }
 
    @Override
    public MBeanInfo getMBeanInfo() {
        return this.mBeanInfo;
    }
 
    private static final class AttributeDescription {
        private final String name;
        private final Supplier<Object> getter;
        private final String description;
        private final Class<?> type;
 
        private AttributeDescription(String name, Supplier<Object> getter, String description, Class<?> type) {
            this.name = name;
            this.getter = getter;
            this.description = description;
            this.type = type;
        }
 
        private MBeanAttributeInfo asMBeanAttributeInfo() {
            return new MBeanAttributeInfo(this.name, this.type.getSimpleName(), this.description, true, false, false);
        }
    }
}

引用的其他类

• MinecraftServer

  • 引用位置: 参数/字段

• Attribute

  • 引用位置: 参数/构造调用
  • 关联成员: Attribute()