JfrCommand.java

net.minecraft.server.commands.JfrCommand

信息

• 全限定名：net.minecraft.server.commands.JfrCommand
• 类型：public class
• 包：net.minecraft.server.commands
• 源码路径：src/main/java/net/minecraft/server/commands/JfrCommand.java
• 起始行号：L19
• 职责：

  TODO

字段/常量

• START_FAILED

  • 类型: SimpleCommandExceptionType
  • 修饰符: private static final
  • 源码定位: L20
  • 说明:

    TODO

• DUMP_FAILED

  • 类型: DynamicCommandExceptionType
  • 修饰符: private static final
  • 源码定位: L21
  • 说明:

    TODO

内部类/嵌套类型

• 无

构造器

private JfrCommand() @ L25

• 构造器名：JfrCommand
• 源码定位：L25
• 修饰符：private

参数:

• 无

说明:

TODO

方法

下面的方法块按源码顺序生成。

public static void register(CommandDispatcher<CommandSourceStack> dispatcher) @ L28

• 方法名：register
• 源码定位：L28
• 返回类型：void
• 修饰符：public static

参数:

• dispatcher: CommandDispatcher

说明:

TODO

private static int startJfr(CommandSourceStack source) @ L37

• 方法名：startJfr
• 源码定位：L37
• 返回类型：int
• 修饰符：private static

参数:

• source: CommandSourceStack

说明:

TODO

private static int stopJfr(CommandSourceStack source) @ L47

• 方法名：stopJfr
• 源码定位：L47
• 返回类型：int
• 修饰符：private static

参数:

• source: CommandSourceStack

说明:

TODO

代码

public class JfrCommand {
    private static final SimpleCommandExceptionType START_FAILED = new SimpleCommandExceptionType(Component.translatable("commands.jfr.start.failed"));
    private static final DynamicCommandExceptionType DUMP_FAILED = new DynamicCommandExceptionType(
        message -> Component.translatableEscape("commands.jfr.dump.failed", message)
    );
 
    private JfrCommand() {
    }
 
    public static void register(CommandDispatcher<CommandSourceStack> dispatcher) {
        dispatcher.register(
            Commands.literal("jfr")
                .requires(Commands.hasPermission(Commands.LEVEL_OWNERS))
                .then(Commands.literal("start").executes(c -> startJfr(c.getSource())))
                .then(Commands.literal("stop").executes(c -> stopJfr(c.getSource())))
        );
    }
 
    private static int startJfr(CommandSourceStack source) throws CommandSyntaxException {
        Environment env = Environment.from(source.getServer());
        if (!JvmProfiler.INSTANCE.start(env)) {
            throw START_FAILED.create();
        } else {
            source.sendSuccess(() -> Component.translatable("commands.jfr.started"), false);
            return 1;
        }
    }
 
    private static int stopJfr(CommandSourceStack source) throws CommandSyntaxException {
        try {
            Path savedRecording = Paths.get(".").relativize(JvmProfiler.INSTANCE.stop().normalize());
            Path clipboardPath = source.getServer().isPublished() && !SharedConstants.IS_RUNNING_IN_IDE ? savedRecording : savedRecording.toAbsolutePath();
            Component fileText = Component.literal(savedRecording.toString())
                .withStyle(ChatFormatting.UNDERLINE)
                .withStyle(
                    style -> style.withClickEvent(new ClickEvent.CopyToClipboard(clipboardPath.toString()))
                        .withHoverEvent(new HoverEvent.ShowText(Component.translatable("chat.copy.click")))
                );
            source.sendSuccess(() -> Component.translatable("commands.jfr.stopped", fileText), false);
            return 1;
        } catch (Throwable var4) {
            throw DUMP_FAILED.create(var4.getMessage());
        }
    }
}

引用的其他类

• CommandSourceStack

  • 引用位置: 参数

• Commands

  • 引用位置: 方法调用
  • 关联成员: Commands.hasPermission(), Commands.literal()

• ClickEvent

  • 引用位置: 方法调用/构造调用
  • 关联成员: ClickEvent.CopyToClipboard(), CopyToClipboard()

• Component

  • 引用位置: 方法调用
  • 关联成员: Component.literal(), Component.translatable(), Component.translatableEscape()

• HoverEvent

  • 引用位置: 方法调用/构造调用
  • 关联成员: HoverEvent.ShowText(), ShowText()

• Environment

  • 引用位置: 方法调用
  • 关联成员: Environment.from()