Geyser/core/src/main/java/org/geysermc/geyser/pack/path/GeyserPathPackCodec.java

110 lines
3.7 KiB
Java

/*
* Copyright (c) 2019-2023 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.pack.path;
import lombok.RequiredArgsConstructor;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.geysermc.geyser.GeyserImpl;
import org.geysermc.geyser.api.pack.PathPackCodec;
import org.geysermc.geyser.api.pack.ResourcePack;
import org.geysermc.geyser.registry.loader.ResourcePackLoader;
import org.geysermc.geyser.util.FileUtils;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.nio.channels.SeekableByteChannel;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.FileTime;
@RequiredArgsConstructor
public class GeyserPathPackCodec extends PathPackCodec {
private final Path path;
private FileTime lastModified;
private byte[] sha256;
private long size = -1;
@Override
public @NonNull Path path() {
this.checkLastModified();
return this.path;
}
@Override
public byte @NonNull [] sha256() {
this.checkLastModified();
if (this.sha256 != null) {
return this.sha256;
}
return this.sha256 = FileUtils.calculateSHA256(this.path);
}
@Override
public long size() {
this.checkLastModified();
if (this.size != -1) {
return this.size;
}
try {
return this.size = Files.size(this.path);
} catch (IOException e) {
throw new RuntimeException("Could not get file size of path " + this.path, e);
}
}
@Override
public @NonNull SeekableByteChannel serialize(@NonNull ResourcePack resourcePack) throws IOException {
return FileChannel.open(this.path);
}
@Override
protected @NonNull ResourcePack create() {
return ResourcePackLoader.readPack(this.path);
}
private void checkLastModified() {
try {
FileTime lastModified = Files.getLastModifiedTime(this.path);
if (this.lastModified == null) {
this.lastModified = lastModified;
return;
}
if (lastModified.toInstant().isAfter(this.lastModified.toInstant())) {
GeyserImpl.getInstance().getLogger().warning("Detected a change in the resource pack " + path + ". This is likely to cause undefined behavior for new clients joining. It is suggested you restart Geyser.");
this.lastModified = lastModified;
this.sha256 = null;
this.size = -1;
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}