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config save: write config to temp file and copy it to original

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Bixilon 2020-09-01 20:43:44 +02:00
parent 8b22faf696
commit d0e246e8b4
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GPG Key ID: 5CAD791931B09AC4
1 changed files with 9 additions and 3 deletions
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12
src/main/java/de/bixilon/minosoft/config/Configuration.java
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@ -172,12 +172,14 @@ public class Configuration {
} }
public void saveToFile(String filename) { public void saveToFile(String filename) {
Thread thread = new Thread(() -> { Thread thread = new Thread(() -> {
// write config to temp file, delete original config, rename temp file to original file to avoid conflicts if minosoft gets closed while saving the config
File tempFile = new File(Config.homeDir + "config/" + filename + ".tmp");
File file = new File(Config.homeDir + "config/" + filename);
Yaml yaml = new Yaml(); Yaml yaml = new Yaml();
FileWriter writer; FileWriter writer;
try { try {
writer = new FileWriter(Config.homeDir + "config/" + filename); writer = new FileWriter(tempFile);
} catch (IOException e) { } catch (IOException e) {
e.printStackTrace(); e.printStackTrace();
return; return;
@ -185,7 +187,11 @@ public class Configuration {
synchronized (config) { synchronized (config) {
yaml.dump(config, writer); yaml.dump(config, writer);
} }
Log.verbose(String.format("Configuration saved to file %s", filename)); if (!file.delete() || !tempFile.renameTo(file)) {
Log.fatal("An error occurred while saving the config file");
} else {
Log.verbose(String.format("Configuration saved to file %s", filename));
}
}); });
thread.setName("IO-Thread"); thread.setName("IO-Thread");
thread.start(); thread.start();