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further crypto layer optimizations for WebDAV compliance

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This commit is contained in:
Sebastian Stenzel
2016-02-14 20:50:42 +01:00
parent cf64a6c425
commit 752601f4da
7 changed files with 185 additions and 78 deletions
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main/filesystem-inmemory/src/main/java/org/cryptomator/filesystem/inmem/InMemoryFile.java
+33 -13
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@@ -42,29 +42,47 @@ class InMemoryFile extends InMemoryNode implements File {
if (!exists()) {
throw new UncheckedIOException(new FileNotFoundException(this.name() + " does not exist"));
}
boolean success = false;
final ReadLock readLock = lock.readLock();
readLock.lock();
return new InMemoryReadableFile(this::getContent, readLock);
try {
final ReadableFile result = new InMemoryReadableFile(this::getContent, readLock);
success = true;
return result;
} finally {
if (!success) {
readLock.unlock();
}
}
}
@Override
public WritableFile openWritable() {
boolean success = false;
final WriteLock writeLock = lock.writeLock();
writeLock.lock();
final InMemoryFolder parent = parent().get();
parent.existingChildren.compute(this.name(), (k, v) -> {
if (v != null && v != this) {
// other file or folder with same name already exists.
throw new UncheckedIOException(new FileAlreadyExistsException(k));
} else {
if (v == null) {
this.creationTime = Instant.now();
try {
final InMemoryFolder parent = parent().get();
parent.existingChildren.compute(this.name(), (k, v) -> {
if (v != null && v != this) {
// other file or folder with same name already exists.
throw new UncheckedIOException(new FileAlreadyExistsException(k));
} else {
if (v == null) {
this.creationTime = Instant.now();
}
this.lastModified = Instant.now();
return this;
}
this.lastModified = Instant.now();
return this;
});
final WritableFile result = new InMemoryWritableFile(this::setLastModified, this::setCreationTime, this::getContent, this::setContent, this::delete, writeLock);
success = true;
return result;
} finally {
if (!success) {
writeLock.unlock();
}
});
return new InMemoryWritableFile(this::setLastModified, this::setCreationTime, this::getContent, this::setContent, this::delete, writeLock);
}
}
private void setLastModified(Instant lastModified) {
@@ -80,6 +98,8 @@ class InMemoryFile extends InMemoryNode implements File {
}
private void delete(Void param) {
content = ByteBuffer.allocate(INITIAL_SIZE);
content.flip();
final InMemoryFolder parent = parent().get();
parent.existingChildren.computeIfPresent(this.name(), (k, v) -> {
// returning null removes the entry.