/**
* Download the given resource url and store it in the local cache Directory.
*
* @param resource
* @param destinationDir The URL of the destination Directoy
*/
public void downloadCacheResource(final StorageResource resource) {
try {
if (resource == null) return;
logger.log(
Level.INFO,
"downloadCacheResource "
+ resource.getResourceUrl()
+ " Version:"
+ resource.getVersion());
storageManager.getCacheDirectoryEntry(
new Callback<DirectoryEntry, StorageError>() {
public void onSuccess(DirectoryEntry cacheDir) {
try {
FileTransfer fileTransfer = phonegap.getFile().createFileTransfer();
String localFileName =
storageManager.convertFilePathToFileName(resource.getResourceUrl());
String sourceUrl = storageManager.getRemoteAppBaseUrl() + resource.getResourceUrl();
String destUrl = cacheDir.toURL() + localFileName;
// String destUrl =
// "cdvfile://localhost/persistent/testapp/test.mp4";
logger.log(
Level.INFO, "downloadResource invoked for : " + sourceUrl + " to : " + destUrl);
fileTransfer.download(sourceUrl, destUrl, getResourceDownloadHandler(resource));
} catch (Exception lex) {
logger.log(Level.SEVERE, "Exception in downloadCacheResource success handler", lex);
}
}
public void onFailure(StorageError error) {
logger.log(
Level.WARNING,
"Failed to download CacheResource for : " + resource.getResourceUrl());
if (resource.getDownloadNotification() != null) {
resource
.getDownloadNotification()
.onFailure(new TransferError(error.getErrorCode(), error.getErrorReason()));
}
}
});
} catch (Exception ex) {
logger.log(Level.SEVERE, "Exception resourceDownload for : " + resource.getResourceUrl(), ex);
}
}
@Override
public void execute() {
try {
Boolean versionCheck = storageManager.checkResourceVersion(storageResource);
if (versionCheck == null) {
logger.log(
Level.WARNING,
"ResourceCacheReference retrieval no chache entry found : "
+ storageResource.getResourceUrl()
+ " requestedVersion:"
+ storageResource.getVersion()
+ " -> invoke loading");
downloadCacheResource(storageResource);
} else if (versionCheck == true) {
// it should be there already and version is ok
logger.log(
Level.INFO,
"Successful ResourceCacheReference retrieval : " + storageResource.getResourceUrl());
// check if it really exists but asynch
String fileName =
storageManager.convertFilePathToFileName(storageResource.getResourceUrl());
storageManager.getLocalFileReference(
storageManager.getCacheDirectory(),
fileName,
false,
new FileCallback<FileEntry, StorageError>() {
@Override
public void onSuccess(FileEntry entry) {
logger.log(
Level.INFO,
"Successful ResourceCacheFile retrieval : " + storageResource.getResourceUrl());
// the cache is ok, file is there in right version, we don't have to
// do something really.
if (storageResource.getDownloadNotification() != null) {
storageResource.getDownloadNotification().onSuccess(entry);
}
}
@Override
public void onFailure(StorageError error) {
logger.log(
Level.SEVERE,
"Failure ResourceCacheReference retrieval : "
+ storageResource.getResourceUrl()
+ " : "
+ error.toString());
// nothing found, we must try to download again
downloadCacheResource(storageResource);
}
});
} else if (versionCheck == false) {
// version doesn't match, invoke reload
logger.log(
Level.WARNING,
"ResourceCacheReference retrieval version mismatch : "
+ storageResource.getResourceUrl()
+ " requestedVersion:"
+ storageResource.getVersion()
+ " -> invoke loading");
downloadCacheResource(storageResource);
}
} catch (Exception ex) {
logger.log(Level.SEVERE, "Exception checking ResourceCache", ex);
}
}
