Upstream/FastAsyncWorldedit
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Add option to limit //calc max execute time

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This fixes players abusing //calc by spamming it, causing more
calculation threads be created than destroyed.
This commit is contained in:
Andrew Gazelka 2017-03-05 19:57:57 -06:00
parent 2a3f92ad18
commit 8d3b918441
4 changed files with 26 additions and 20 deletions
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2
build.gradle
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@ -28,7 +28,7 @@ ext {
date = git.head().date.format("yy.MM.dd")
revision = "-${git.head().abbreviatedId}"
parents = git.head().parentIds;
index = -80; // Offset to mach CI
index = -81; // Offset to mach CI
int major, minor, patch;
major = minor = patch = 0;
for (;parents != null && !parents.isEmpty();index++) {

3
core/src/main/java/com/boydti/fawe/config/Settings.java
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@ -107,6 +107,8 @@ public class Settings extends Config {
" - History on disk or memory will be deleted",
})
public int MAX_HISTORY_MB = -1;
@Comment("Maximum time in milliseconds //calc can execute")
public int MAX_CALC_MS = 50;
@Comment({
"Cinematic block placement:",
" - Adds a delay to block placement (ms/block)",
@ -365,6 +367,7 @@ public class Settings extends Config {
limit.MAX_FAILS = Math.max(limit.MAX_FAILS, newLimit.MAX_FAILS != -1 ? newLimit.MAX_FAILS : Integer.MAX_VALUE);
limit.MAX_ITERATIONS = Math.max(limit.MAX_ITERATIONS, newLimit.MAX_ITERATIONS != -1 ? newLimit.MAX_ITERATIONS : Integer.MAX_VALUE);
limit.MAX_HISTORY = Math.max(limit.MAX_HISTORY, newLimit.MAX_HISTORY_MB != -1 ? newLimit.MAX_HISTORY_MB : Integer.MAX_VALUE);
limit.MAX_CALC_MS = Math.max(limit.MAX_CALC_MS, newLimit.MAX_CALC_MS != -1 ? newLimit.MAX_CALC_MS : Integer.MAX_VALUE);
limit.INVENTORY_MODE = Math.min(limit.INVENTORY_MODE, newLimit.INVENTORY_MODE);
limit.SPEED_REDUCTION = Math.min(limit.SPEED_REDUCTION, newLimit.SPEED_REDUCTION);
limit.FAST_PLACEMENT |= newLimit.FAST_PLACEMENT;

2
core/src/main/java/com/boydti/fawe/object/FaweLimit.java
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@ -12,6 +12,7 @@ public class FaweLimit {
public int MAX_BLOCKSTATES = 0;
public int MAX_ENTITIES = 0;
public int MAX_HISTORY = 0;
public int MAX_CALC_MS = 0;
public int INVENTORY_MODE = Integer.MAX_VALUE;
public int SPEED_REDUCTION = Integer.MAX_VALUE;
public boolean FAST_PLACEMENT = false;
@ -55,6 +56,7 @@ public class FaweLimit {
MAX.MAX_BLOCKSTATES = Integer.MAX_VALUE;
MAX.MAX_ENTITIES = Integer.MAX_VALUE;
MAX.MAX_HISTORY = Integer.MAX_VALUE;
MAX.MAX_CALC_MS = 50;
MAX.FAST_PLACEMENT = true;
}

35
core/src/main/java/com/sk89q/worldedit/command/UtilityCommands.java
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@ -20,19 +20,13 @@
package com.sk89q.worldedit.command;
import com.boydti.fawe.config.BBC;
import com.boydti.fawe.object.FaweLimit;
import com.boydti.fawe.object.FawePlayer;
import com.google.common.base.Joiner;
import com.google.common.util.concurrent.AtomicDouble;
import com.sk89q.minecraft.util.commands.Command;
import com.sk89q.minecraft.util.commands.CommandContext;
import com.sk89q.minecraft.util.commands.CommandException;
import com.sk89q.minecraft.util.commands.CommandPermissions;
import com.sk89q.minecraft.util.commands.Logging;
import com.sk89q.worldedit.EditSession;
import com.sk89q.worldedit.LocalConfiguration;
import com.sk89q.worldedit.LocalSession;
import com.sk89q.minecraft.util.commands.*;
import com.sk89q.worldedit.*;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.WorldEdit;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.command.util.CreatureButcher;
import com.sk89q.worldedit.command.util.EntityRemover;
@ -64,17 +58,13 @@ import com.sk89q.worldedit.util.formatting.component.Code;
import com.sk89q.worldedit.util.formatting.component.CommandListBox;
import com.sk89q.worldedit.util.formatting.component.CommandUsageBox;
import com.sk89q.worldedit.world.World;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.*;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import static com.sk89q.minecraft.util.commands.Logging.LogMode.PLACEMENT;
/**
@ -524,6 +514,17 @@ public class UtilityCommands {
@CommandPermissions("worldedit.calc")
public void calc(final Actor actor, @Text String input) throws CommandException {
try {
FaweLimit limit;
FawePlayer player = null;
if (actor != null) {
player = FawePlayer.wrap(actor);
}
if (player == null) {
limit = FaweLimit.MAX;
} else {
limit = player.getLimit();
}
final Expression expression = Expression.compile(input);
final AtomicDouble result = new AtomicDouble(Double.NaN);
ExecutorService executor = Executors.newSingleThreadExecutor();
@ -534,7 +535,7 @@ public class UtilityCommands {
result.set(expression.evaluate());
return null;
}
}), 10, TimeUnit.SECONDS); // Timeout of 10 minutes.
}), limit.MAX_CALC_MS, TimeUnit.MILLISECONDS); // Default timeout of 50 milliseconds to prevent abuse.
} catch (InterruptedException e) {
throw new RuntimeException(e);
}