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@@ -0,0 +1,82 @@
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+package org.cryptomator.ui.logging;
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+
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+import java.io.IOException;
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+import java.io.Serializable;
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+import java.net.URI;
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+import java.net.URISyntaxException;
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+import java.nio.file.FileSystems;
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+import java.nio.file.Files;
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+import java.nio.file.Path;
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+
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+import org.apache.commons.lang3.SystemUtils;
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+import org.apache.logging.log4j.core.Filter;
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+import org.apache.logging.log4j.core.Layout;
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+import org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender;
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+import org.apache.logging.log4j.core.appender.FileManager;
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+import org.apache.logging.log4j.core.config.plugins.Plugin;
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+import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
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+import org.apache.logging.log4j.core.config.plugins.PluginElement;
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+import org.apache.logging.log4j.core.config.plugins.PluginFactory;
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+import org.apache.logging.log4j.core.layout.PatternLayout;
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+
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+@Plugin(name = "HomeDirectoryAwareFile", category = "Core", elementType = "appender", printObject = true)
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+public class HomeDirectoryAwareFileAppender extends AbstractOutputStreamAppender<FileManager> {
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+
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+ private static final long serialVersionUID = -6548221568069606389L;
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+ private static final int DEFAULT_BUFFER_SIZE = 8192;
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+
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+ protected HomeDirectoryAwareFileAppender(String name, Layout<? extends Serializable> layout, Filter filter, FileManager manager) {
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+ super(name, layout, filter, true, true, manager);
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+ LOGGER.warn("Logging to " + manager.getFileName());
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+ }
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+
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+ @PluginFactory
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+ public static HomeDirectoryAwareFileAppender createAppender(@PluginAttribute("name") final String name, @PluginAttribute("fileName") final String fileName,
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+ @PluginElement("Layout") Layout<? extends Serializable> layout) {
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+
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+ if (name == null) {
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+ LOGGER.error("No name provided for FileAppender");
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+ return null;
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+ }
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+
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+ final Path filePath;
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+ if (fileName == null) {
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+ LOGGER.error("No filename provided for FileAppender with name " + name);
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+ return null;
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+ } else if (fileName.startsWith("~/")) {
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+ // home-dir-relative Path:
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+ final Path userHome = FileSystems.getDefault().getPath(SystemUtils.USER_HOME);
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+ filePath = userHome.resolve(fileName.substring(2));
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+ } else if (fileName.startsWith("/")) {
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+ // absolute Path:
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+ filePath = FileSystems.getDefault().getPath(fileName);
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+ } else {
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+ // relative Path:
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+ try {
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+ final URI jarFileLocation = HomeDirectoryAwareFileAppender.class.getProtectionDomain().getCodeSource().getLocation().toURI();
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+ final Path workingDir = FileSystems.getDefault().getPath(jarFileLocation.getPath()).getParent();
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+ filePath = workingDir.resolve(fileName);
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+ } catch (URISyntaxException e) {
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+ LOGGER.error("Unable to resolve working directory ", e);
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+ return null;
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+ }
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+ }
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+
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+ if (layout == null) {
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+ layout = PatternLayout.createDefaultLayout();
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+ }
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+
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+ if (!Files.exists(filePath.getParent())) {
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+ try {
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+ Files.createDirectories(filePath.getParent());
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+ } catch (IOException e) {
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+ LOGGER.error("Could not create parent directories for log file located at " + filePath.toString(), e);
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+ return null;
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+ }
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+ }
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+
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+ final FileManager manager = FileManager.getFileManager(filePath.toString(), false, false, true, null, layout, DEFAULT_BUFFER_SIZE);
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+ return new HomeDirectoryAwareFileAppender(name, layout, null, manager);
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+ }
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+
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+}
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Sebastian Stenzel