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Harmonize filesystem and transient loadBlob 

Move getBlob into FilesystemStorageStrategyImpl, similar to
TransientStorageStrategy.
This commit is contained in:
Andrew Gaul 2012-05-14 12:48:20 -07:00 committed by Andrew Gaul
parent a30aad05ed
commit 1199c54f67
3 changed files with 33 additions and 25 deletions
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26
apis/filesystem/src/main/java/org/jclouds/filesystem/FilesystemAsyncBlobStore.java
View File

@ -343,33 +343,9 @@ public class FilesystemAsyncBlobStore extends BaseAsyncBlobStore {
return immediateFuture(result);
}
/**
* Load the blob with the given key belonging to the container with the given
* name. There must exist a resource on the file system whose complete name
* is given concatenating the container name and the key
*
* @param container
* it's the name of the container the blob belongs to
* @param key
* it's the key of the blob
*
* @return the blob belonging to the given container with the given key
*/
private Blob loadBlob(final String container, final String key) {
logger.debug("Opening blob in container: %s - %s", container, key);
BlobBuilder builder = blobUtils.blobBuilder();
builder.name(key);
File file = storageStrategy.getFileForBlobKey(container, key);
try {
builder.payload(file).calculateMD5();
} catch (IOException e) {
logger.error("An error occurred calculating MD5 for blob %s from container ", key, container);
Throwables.propagateIfPossible(e);
}
Blob blob = builder.build();
if (blob.getPayload().getContentMetadata().getContentMD5() != null)
blob.getMetadata().setETag(CryptoStreams.hex(blob.getPayload().getContentMetadata().getContentMD5()));
return blob;
return storageStrategy.getBlob(container, key);
}
protected static class DelimiterFilter implements Predicate<StorageMetadata> {

14
apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/FilesystemStorageStrategy.java
View File

@ -123,6 +123,20 @@ public interface FilesystemStorageStrategy {
*/
boolean blobExists(String container, String key);
/**
* Load the blob with the given key belonging to the container with the given
* name. There must exist a resource on the file system whose complete name
* is given concatenating the container name and the key
*
* @param container
* it's the name of the container the blob belongs to
* @param key
* it's the key of the blob
*
* @return the blob belonging to the given container with the given key
*/
Blob getBlob(final String containerName, final String blobName);
/**
* Returns all the blobs key inside a container
* @param container

18
apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/internal/FilesystemStorageStrategyImpl.java
View File

@ -38,6 +38,7 @@ import org.apache.commons.io.filefilter.DirectoryFileFilter;
import org.jclouds.blobstore.domain.Blob;
import org.jclouds.blobstore.domain.BlobBuilder;
import org.jclouds.blobstore.options.ListContainerOptions;
import org.jclouds.crypto.CryptoStreams;
import org.jclouds.filesystem.predicates.validators.FilesystemBlobKeyValidator;
import org.jclouds.filesystem.predicates.validators.FilesystemContainerNameValidator;
import org.jclouds.filesystem.reference.FilesystemConstants;
@ -91,6 +92,23 @@ public class FilesystemStorageStrategyImpl implements FilesystemStorageStrategy
return buildPathAndChecksIfFileExists(container, key);
}
@Override
public Blob getBlob(final String container, final String key) {
BlobBuilder builder = blobBuilders.get();
builder.name(key);
File file = getFileForBlobKey(container, key);
try {
builder.payload(file).calculateMD5();
} catch (IOException e) {
logger.error("An error occurred calculating MD5 for blob %s from container ", key, container);
Throwables.propagateIfPossible(e);
}
Blob blob = builder.build();
if (blob.getPayload().getContentMetadata().getContentMD5() != null)
blob.getMetadata().setETag(CryptoStreams.hex(blob.getPayload().getContentMetadata().getContentMD5()));
return blob;
}
@Override
public boolean createContainer(String container) {
logger.debug("Creating container %s", container);