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Lazily call IrregularUnmountCleaner from (and only from!) TemporaryMountPointChooser

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This commit is contained in:
Sebastian Stenzel
2020-11-18 13:08:48 +01:00
parent c6d1c2ca6b
commit d3c2b0509e
3 changed files with 21 additions and 17 deletions
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main/commons/src/main/java/org/cryptomator/common/mountpoint/IrregularUnmountCleaner.java
+1 -8
View File
@@ -10,7 +10,7 @@ import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
public class IrregularUnmountCleaner {
class IrregularUnmountCleaner {
public static Logger LOG = LoggerFactory.getLogger(IrregularUnmountCleaner.class);
@@ -48,7 +48,6 @@ public class IrregularUnmountCleaner {
private static void deleteEmptyDir(Path dir) throws IOException {
assert Files.isDirectory(dir, LinkOption.NOFOLLOW_LINKS);
try {
checkEmpty(dir);
Files.delete(dir); // attempt to delete dir non-recursively (will fail, if there are contents)
} catch (DirectoryNotEmptyException e) {
LOG.info("Found non-empty directory in mountpoint dir: {}", dir);
@@ -62,10 +61,4 @@ public class IrregularUnmountCleaner {
}
}
private static void checkEmpty(Path dir) throws IOException {
if(Files.newDirectoryStream(dir).iterator().hasNext()) {
throw new DirectoryNotEmptyException(dir.toString());
}
}
}
main/commons/src/main/java/org/cryptomator/common/mountpoint/TemporaryMountPointChooser.java
+20 -2
View File
@@ -11,9 +11,11 @@ import javax.inject.Inject;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicBoolean;
class TemporaryMountPointChooser implements MountPointChooser {
@@ -22,6 +24,7 @@ class TemporaryMountPointChooser implements MountPointChooser {
private final VaultSettings vaultSettings;
private final Environment environment;
private volatile boolean clearedDebris;
@Inject
public TemporaryMountPointChooser(VaultSettings vaultSettings, Environment environment) {
@@ -40,9 +43,24 @@ class TemporaryMountPointChooser implements MountPointChooser {
@Override
public Optional<Path> chooseMountPoint(Volume caller) {
clearDebrisIfNeeded();
return this.environment.getMountPointsDir().map(this::choose);
}
//clean leftovers of not-regularly unmounted vaults
//see https://github.com/cryptomator/cryptomator/issues/1013 and https://github.com/cryptomator/cryptomator/issues/1061
private synchronized void clearDebrisIfNeeded() {
assert environment.getMountPointsDir().isPresent();
if (clearedDebris) {
return; // already cleared
}
Path mountPointDir = environment.getMountPointsDir().get();
if (Files.exists(mountPointDir, LinkOption.NOFOLLOW_LINKS)) {
IrregularUnmountCleaner.removeIrregularUnmountDebris(mountPointDir);
}
clearedDebris = true;
}
private Path choose(Path parent) {
String basename = this.vaultSettings.mountName().get();
//regular
@@ -51,13 +69,13 @@ class TemporaryMountPointChooser implements MountPointChooser {
return mountPoint;
}
//with id
mountPoint = parent.resolve(basename + " (" +vaultSettings.getId() + ")");
mountPoint = parent.resolve(basename + " (" + vaultSettings.getId() + ")");
if (Files.notExists(mountPoint)) {
return mountPoint;
}
//with id and count
for (int i = 1; i < MAX_TMPMOUNTPOINT_CREATION_RETRIES; i++) {
mountPoint = parent.resolve(basename + "_(" +vaultSettings.getId() + ")_"+i);
mountPoint = parent.resolve(basename + "_(" + vaultSettings.getId() + ")_" + i);
if (Files.notExists(mountPoint)) {
return mountPoint;
}