Custom JFR events defined in Minecraft, obtained by using `jfr metadata` on a generated JFR file

CustomEvents.java

@Name("minecraft.ChunkGeneration")
@Label("Chunk Generation")
@Category({"Minecraft", "World Generation"})
class ChunkGeneration extends jdk.jfr.Event {
  @Label("Start Time")
  @Timestamp("TICKS")
  long startTime;

  @Label("Duration")
  @Timespan("TICKS")
  long duration;

  @Label("Event Thread")
  @Description("Thread in which event was committed in")
  Thread eventThread;

  @Label("Stack Trace")
  @Description("Stack Trace starting from the method the event was committed in")
  StackTrace stackTrace;

  @Label("First Block X World Position")
  int worldPosX;

  @Label("First Block Z World Position")
  int worldPosZ;

  @Label("Chunk X Position")
  int chunkPosX;

  @Label("Chunk Z Position")
  int chunkPosZ;

  @Label("Status")
  String status;

  @Label("Level")
  String level;
}

@Name("minecraft.LoadWorld")
@Label("Create/Load World")
@Category({"Minecraft", "World Generation"})
class LoadWorld extends jdk.jfr.Event {
  @Label("Start Time")
  @Timestamp("TICKS")
  long startTime;

  @Label("Duration")
  @Timespan("TICKS")
  long duration;

  @Label("Event Thread")
  @Description("Thread in which event was committed in")
  Thread eventThread;

  @Label("Stack Trace")
  @Description("Stack Trace starting from the method the event was committed in")
  StackTrace stackTrace;
}

@Name("minecraft.NetworkSummary")
@Label("Network Summary")
@Category({"Minecraft", "Network"})
class NetworkSummary extends jdk.jfr.Event {
  @Label("Start Time")
  @Timestamp("TICKS")
  long startTime;

  @Label("Duration")
  @Timespan("TICKS")
  long duration;

  @Label("Event Thread")
  @Description("Thread in which event was committed in")
  Thread eventThread;

  @Label("Stack Trace")
  @Description("Stack Trace starting from the method the event was committed in")
  StackTrace stackTrace;

  @Label("Remote Address")
  String remoteAddress;

  @Label("Sent Bytes")
  @DataAmount("BYTES")
  long sentBytes;

  @Label("Sent Packets")
  int sentPackets;

  @Label("Received Bytes")
  @DataAmount("BYTES")
  long receivedBytes;

  @Label("Received Packets")
  int receivedPackets;
}

@Name("minecraft.PacketReceived")
@Category({"Minecraft", "Network"})
@Label("Network Packet Received")
class PacketReceived extends jdk.jfr.Event {
  @Label("Start Time")
  @Timestamp("TICKS")
  long startTime;

  @Label("Duration")
  @Timespan("TICKS")
  long duration;

  @Label("Event Thread")
  @Description("Thread in which event was committed in")
  Thread eventThread;

  @Label("Stack Trace")
  @Description("Stack Trace starting from the method the event was committed in")
  StackTrace stackTrace;

  @Label("Protocol Id")
  String protocolId;

  @Label("Packet Id")
  int packetId;

  @Label("Remote Address")
  String remoteAddress;

  @Label("Bytes")
  @DataAmount("BYTES")
  int bytes;
}

@Name("minecraft.PacketSent")
@Category({"Minecraft", "Network"})
@Label("Network Packet Sent")
class PacketSent extends jdk.jfr.Event {
  @Label("Start Time")
  @Timestamp("TICKS")
  long startTime;

  @Label("Duration")
  @Timespan("TICKS")
  long duration;

  @Label("Event Thread")
  @Description("Thread in which event was committed in")
  Thread eventThread;

  @Label("Stack Trace")
  @Description("Stack Trace starting from the method the event was committed in")
  StackTrace stackTrace;

  @Label("Protocol Id")
  String protocolId;

  @Label("Packet Id")
  int packetId;

  @Label("Remote Address")
  String remoteAddress;

  @Label("Bytes")
  @DataAmount("BYTES")
  int bytes;
}

@Name("minecraft.ServerTickTime")
@Label("Server Tick Time")
@Category({"Minecraft", "Ticking"})
class ServerTickTime extends jdk.jfr.Event {
  @Label("Start Time")
  @Timestamp("TICKS")
  long startTime;

  @Label("Duration")
  @Timespan("TICKS")
  long duration;

  @Label("Event Thread")
  @Description("Thread in which event was committed in")
  Thread eventThread;

  @Label("Stack Trace")
  @Description("Stack Trace starting from the method the event was committed in")
  StackTrace stackTrace;

  @Label("Average Server Tick Duration")
  @Timespan("NANOSECONDS")
  long averageTickDuration;
}