public long getTotalUsage() {
long usage = 0;
if (mLocalStorageInfo != null) {
usage += mLocalStorageInfo.getSize();
}
for (StorageInfo info : mStorageInfo) {
usage += info.getSize();
}
return usage;
}
/**
* Extracts the StorageInfo stored in the FileAttributes.
*
* <p>Initializes legacy fields that used to be stored in StorageInfo, but are now stored in
* FileAttributes.
*
* <p>Should only be used when backwards compatibility must be maintained.
*/
public static StorageInfo extractFrom(FileAttributes attributes) {
StorageInfo info = attributes.getStorageInfo();
if (attributes.isDefined(FileAttribute.SIZE)) {
info.setLegacySize(attributes.getSize());
}
if (attributes.isDefined(FileAttribute.ACCESS_LATENCY)) {
info.setLegacyAccessLatency(attributes.getAccessLatency());
}
if (attributes.isDefined(FileAttribute.RETENTION_POLICY)) {
info.setLegacyRetentionPolicy(attributes.getRetentionPolicy());
}
if (attributes.isDefined(FileAttribute.FLAGS)) {
for (Map.Entry<String, String> entry : attributes.getFlags().entrySet()) {
info.setKey(entry.getKey(), entry.getValue());
}
}
if (attributes.isDefined(FileAttribute.CHECKSUM)) {
info.setKey("flag-c", Joiner.on(',').join(attributes.getChecksums()));
}
if (attributes.isDefined(FileAttribute.OWNER)) {
info.setKey("uid", Integer.toString(attributes.getOwner()));
}
if (attributes.isDefined(FileAttribute.OWNER_GROUP)) {
info.setKey("gid", Integer.toString(attributes.getGroup()));
}
return info;
}
/**
* Injects the StorageInfo into the FileAttributes.
*
* <p>Legacy fields that used to be stored in StorageInfo, but are now stored in FileAttributes,
* are injected into the FileAttributes too.
*
* <p>Should only be used when backwards compatibility must be maintained.
*/
public static FileAttributes injectInto(StorageInfo info, FileAttributes attributes) {
attributes.setStorageInfo(info);
attributes.setSize(info.getLegacySize());
attributes.setAccessLatency(info.getLegacyAccessLatency());
attributes.setRetentionPolicy(info.getLegacyRetentionPolicy());
String cFlag = info.getKey("flag-c");
if (cFlag != null) {
attributes.setChecksums(
Sets.newHashSet(
transform(
Splitter.on(',').trimResults().omitEmptyStrings().split(cFlag),
new Function<String, Checksum>() {
@Override
public Checksum apply(String digest) {
return Checksum.parseChecksum(digest);
}
})));
}
String uid = info.getKey("uid");
if (uid != null) {
attributes.setOwner(Integer.parseInt(uid));
}
String gid = info.getKey("gid");
if (gid != null) {
attributes.setGroup(Integer.parseInt(gid));
}
attributes.setFlags(info.getMap());
return attributes;
}
public void clearAllStoredData(final StoredDataClearedCallback callback) {
if (mLocalStorageInfo != null) {
mLocalStorageInfo.clear();
mLocalStorageInfo = null;
}
mStorageInfoCallbacksLeft = mStorageInfo.size();
if (mStorageInfoCallbacksLeft > 0) {
for (StorageInfo info : mStorageInfo) {
info.clear(
new WebsitePreferenceBridge.StorageInfoClearedCallback() {
@Override
public void onStorageInfoCleared() {
if (--mStorageInfoCallbacksLeft == 0) callback.onStoredDataCleared();
}
});
}
mStorageInfo.clear();
} else {
callback.onStoredDataCleared();
}
}