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package net.minecraft.server.commands;
import com.mojang.brigadier.CommandDispatcher;
import com.mojang.brigadier.context.CommandContext;
import com.mojang.brigadier.context.ContextChain;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import com.mojang.brigadier.exceptions.SimpleCommandExceptionType;
import com.mojang.logging.LogUtils;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UncheckedIOException;
import java.io.Writer;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Locale;
import net.minecraft.Util;
import net.minecraft.commands.CommandResultCallback;
import net.minecraft.commands.CommandSource;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.Commands;
import net.minecraft.commands.FunctionInstantiationException;
import net.minecraft.commands.arguments.item.FunctionArgument;
import net.minecraft.commands.execution.ChainModifiers;
import net.minecraft.commands.execution.CustomCommandExecutor;
import net.minecraft.commands.execution.ExecutionContext;
import net.minecraft.commands.execution.ExecutionControl;
import net.minecraft.commands.execution.Frame;
import net.minecraft.commands.execution.TraceCallbacks;
import net.minecraft.commands.execution.tasks.CallFunction;
import net.minecraft.commands.functions.CommandFunction;
import net.minecraft.commands.functions.InstantiatedFunction;
import net.minecraft.network.chat.Component;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.MinecraftServer;
import net.minecraft.util.TimeUtil;
import net.minecraft.util.profiling.ProfileResults;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
public class DebugCommand {
static final Logger LOGGER = LogUtils.getLogger();
private static final SimpleCommandExceptionType ERROR_NOT_RUNNING = new SimpleCommandExceptionType(Component.translatable("commands.debug.notRunning"));
private static final SimpleCommandExceptionType ERROR_ALREADY_RUNNING = new SimpleCommandExceptionType(Component.translatable("commands.debug.alreadyRunning"));
static final SimpleCommandExceptionType NO_RECURSIVE_TRACES = new SimpleCommandExceptionType(Component.translatable("commands.debug.function.noRecursion"));
static final SimpleCommandExceptionType NO_RETURN_RUN = new SimpleCommandExceptionType(Component.translatable("commands.debug.function.noReturnRun"));
public static void register(CommandDispatcher<CommandSourceStack> p_136906_) {
p_136906_.register(
Commands.literal("debug")
.requires(p_180073_ -> p_180073_.hasPermission(3))
.then(Commands.literal("start").executes(p_180069_ -> start(p_180069_.getSource())))
.then(Commands.literal("stop").executes(p_136918_ -> stop(p_136918_.getSource())))
.then(
Commands.literal("function")
.requires(p_180071_ -> p_180071_.hasPermission(3))
.then(
Commands.argument("name", FunctionArgument.functions())
.suggests(FunctionCommand.SUGGEST_FUNCTION)
.executes(new DebugCommand.TraceCustomExecutor())
)
)
);
}
private static int start(CommandSourceStack p_136910_) throws CommandSyntaxException {
MinecraftServer minecraftserver = p_136910_.getServer();
if (minecraftserver.isTimeProfilerRunning()) {
throw ERROR_ALREADY_RUNNING.create();
} else {
minecraftserver.startTimeProfiler();
p_136910_.sendSuccess(() -> Component.translatable("commands.debug.started"), true);
return 0;
}
}
private static int stop(CommandSourceStack p_136916_) throws CommandSyntaxException {
MinecraftServer minecraftserver = p_136916_.getServer();
if (!minecraftserver.isTimeProfilerRunning()) {
throw ERROR_NOT_RUNNING.create();
} else {
ProfileResults profileresults = minecraftserver.stopTimeProfiler();
double d0 = (double)profileresults.getNanoDuration() / (double)TimeUtil.NANOSECONDS_PER_SECOND;
double d1 = (double)profileresults.getTickDuration() / d0;
p_136916_.sendSuccess(
() -> Component.translatable(
"commands.debug.stopped", String.format(Locale.ROOT, "%.2f", d0), profileresults.getTickDuration(), String.format(Locale.ROOT, "%.2f", d1)
),
true
);
return (int)d1;
}
}
static class TraceCustomExecutor
extends CustomCommandExecutor.WithErrorHandling<CommandSourceStack>
implements CustomCommandExecutor.CommandAdapter<CommandSourceStack> {
public void runGuarded(
CommandSourceStack p_309819_, ContextChain<CommandSourceStack> p_311173_, ChainModifiers p_312111_, ExecutionControl<CommandSourceStack> p_311988_
) throws CommandSyntaxException {
if (p_312111_.isReturn()) {
throw DebugCommand.NO_RETURN_RUN.create();
} else if (p_311988_.tracer() != null) {
throw DebugCommand.NO_RECURSIVE_TRACES.create();
} else {
CommandContext<CommandSourceStack> commandcontext = p_311173_.getTopContext();
Collection<CommandFunction<CommandSourceStack>> collection = FunctionArgument.getFunctions(commandcontext, "name");
MinecraftServer minecraftserver = p_309819_.getServer();
String s = "debug-trace-" + Util.getFilenameFormattedDateTime() + ".txt";
CommandDispatcher<CommandSourceStack> commanddispatcher = p_309819_.getServer().getFunctions().getDispatcher();
int i = 0;
try {
Path path = minecraftserver.getFile("debug");
Files.createDirectories(path);
final PrintWriter printwriter = new PrintWriter(Files.newBufferedWriter(path.resolve(s), StandardCharsets.UTF_8));
DebugCommand.Tracer debugcommand$tracer = new DebugCommand.Tracer(printwriter);
p_311988_.tracer(debugcommand$tracer);
for (final CommandFunction<CommandSourceStack> commandfunction : collection) {
try {
CommandSourceStack commandsourcestack = p_309819_.withSource(debugcommand$tracer).withMaximumPermission(2);
InstantiatedFunction<CommandSourceStack> instantiatedfunction = commandfunction.instantiate(null, commanddispatcher);
p_311988_.queueNext((new CallFunction<CommandSourceStack>(instantiatedfunction, CommandResultCallback.EMPTY, false) {
public void execute(CommandSourceStack p_310186_, ExecutionContext<CommandSourceStack> p_311250_, Frame p_311262_) {
printwriter.println(commandfunction.id());
super.execute(p_310186_, p_311250_, p_311262_);
}
}).bind(commandsourcestack));
i += instantiatedfunction.entries().size();
} catch (FunctionInstantiationException functioninstantiationexception) {
p_309819_.sendFailure(functioninstantiationexception.messageComponent());
}
}
} catch (IOException | UncheckedIOException uncheckedioexception) {
DebugCommand.LOGGER.warn("Tracing failed", (Throwable)uncheckedioexception);
p_309819_.sendFailure(Component.translatable("commands.debug.function.traceFailed"));
}
int j = i;
p_311988_.queueNext(
(p_311688_, p_310332_) -> {
if (collection.size() == 1) {
p_309819_.sendSuccess(
() -> Component.translatable(
"commands.debug.function.success.single", j, Component.translationArg(collection.iterator().next().id()), s
),
true
);
} else {
p_309819_.sendSuccess(() -> Component.translatable("commands.debug.function.success.multiple", j, collection.size(), s), true);
}
}
);
}
}
}
static class Tracer implements CommandSource, TraceCallbacks {
public static final int INDENT_OFFSET = 1;
private final PrintWriter output;
private int lastIndent;
private boolean waitingForResult;
Tracer(PrintWriter p_180079_) {
this.output = p_180079_;
}
private void indentAndSave(int p_180082_) {
this.printIndent(p_180082_);
this.lastIndent = p_180082_;
}
private void printIndent(int p_180098_) {
for (int i = 0; i < p_180098_ + 1; i++) {
this.output.write(" ");
}
}
private void newLine() {
if (this.waitingForResult) {
this.output.println();
this.waitingForResult = false;
}
}
@Override
public void onCommand(int p_180084_, String p_180085_) {
this.newLine();
this.indentAndSave(p_180084_);
this.output.print("[C] ");
this.output.print(p_180085_);
this.waitingForResult = true;
}
@Override
public void onReturn(int p_180087_, String p_180088_, int p_180089_) {
if (this.waitingForResult) {
this.output.print(" -> ");
this.output.println(p_180089_);
this.waitingForResult = false;
} else {
this.indentAndSave(p_180087_);
this.output.print("[R = ");
this.output.print(p_180089_);
this.output.print("] ");
this.output.println(p_180088_);
}
}
@Override
public void onCall(int p_180091_, ResourceLocation p_180092_, int p_180093_) {
this.newLine();
this.indentAndSave(p_180091_);
this.output.print("[F] ");
this.output.print(p_180092_);
this.output.print(" size=");
this.output.println(p_180093_);
}
@Override
public void onError(String p_180101_) {
this.newLine();
this.indentAndSave(this.lastIndent + 1);
this.output.print("[E] ");
this.output.print(p_180101_);
}
@Override
public void sendSystemMessage(Component p_214427_) {
this.newLine();
this.printIndent(this.lastIndent + 1);
this.output.print("[M] ");
this.output.println(p_214427_.getString());
}
@Override
public boolean acceptsSuccess() {
return true;
}
@Override
public boolean acceptsFailure() {
return true;
}
@Override
public boolean shouldInformAdmins() {
return false;
}
@Override
public boolean alwaysAccepts() {
return true;
}
@Override
public void close() {
IOUtils.closeQuietly((Writer)this.output);
}
}
} |