PaperMC / PaperMC/Paper

Unable to use non-legacy Random Number Generator Algorithms

Open
#10,114 10 comments 4 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

status: accepted type: bug
Dominant language
Java
Stars
12.7k
Forks
3.5k
Avg merge
3d 13h
Merged PRs (30d)
11

Description

Expected behavior
  • Using an RNG Algorithm like Xoroshiro128PlusPlus works fine
RandomGenerator rng = RandomGenerator.of("Xoroshiro128PlusPlus");
Bukkit.getLogger().info("Number: " + rng.nextInt());
Observed/Actual behavior
  • Using an RNG Algorithm like Xoroshiro128PlusPlus does not work
  • Only the Legacy Algorithms like Random and SplittableRandom work
Steps/models to reproduce
  • Create Basic Plugin
  • Run Server
  • See Error
[08:56:32 ERROR]: Error occurred while enabling TestRandom v1.0-SNAPSHOT (Is it up to date?)
java.lang.IllegalArgumentException: No implementation of the random number generator algorithm "Xoroshiro128PlusPlus" is available
	at java.util.random.RandomGeneratorFactory.findProvider(RandomGeneratorFactory.java:226) ~[?:?]
	at java.util.random.RandomGeneratorFactory.of(RandomGeneratorFactory.java:254) ~[?:?]
	at java.util.random.RandomGenerator.of(RandomGenerator.java:123) ~[?:?]
	at org.test.testrandom.TestRandomPlugin.onEnable(TestRandomPlugin.java:12) ~[TestRandom-1.0-SNAPSHOT.jar:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:281) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
	at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:190) ~[paper-1.20.4.jar:git-Paper-370]
	at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:104) ~[paper-1.20.4.jar:git-Paper-370]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:507) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.craftbukkit.v1_20_R3.CraftServer.enablePlugin(CraftServer.java:637) ~[paper-1.20.4.jar:git-Paper-370]
	at org.bukkit.craftbukkit.v1_20_R3.CraftServer.enablePlugins(CraftServer.java:548) ~[paper-1.20.4.jar:git-Paper-370]
	at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:673) ~[paper-1.20.4.jar:git-Paper-370]
	at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:433) ~[paper-1.20.4.jar:git-Paper-370]
	at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:308) ~[paper-1.20.4.jar:git-Paper-370]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1132) ~[paper-1.20.4.jar:git-Paper-370]
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:321) ~[paper-1.20.4.jar:git-Paper-370]
	at java.lang.Thread.run(Thread.java:840) ~[?:?]
[08:56:32 INFO]: [TestRandom] Disabling TestRandom v1.0-SNAPSHOT
Plugin and Datapack List
  • The Test Plugin
Paper version

This server is running Paper version git-Paper-370 (MC: 1.20.4) (Implementing API version 1.20.4-R0.1-SNAPSHOT) (Git: 1fa48d1)

Other

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the failure with the Java versions and Paper 1.20.4 build listed, then trace plugin startup from TestRandomPlugin.onEnable through JavaPlugin.setEnabled and PaperPluginInstanceManager.enablePlugin. Compare the Paper server behavior with the working Fabric and console cases; done means Xoroshiro128PlusPlus can be obtained and used from a plugin without the reported exception.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.