mirror of https://github.com/apache/jclouds.git
Delegate blob storage to TransientStorageStrategy
This further minimizes the drift between the filesystem and transient blobstores. We also now require that users keep the BlobStoreContext open instead of using ConcurrentMap singletons. Finally we remove the "stub" container.
This commit is contained in:
Andrew Gaul
parent
743773aeef
commit
4ac7629f44
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@ -163,8 +163,7 @@ public class FilesystemAsyncBlobStore extends BaseAsyncBlobStore {
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SortedSet<StorageMetadata> contents = newTreeSet(transform(blobBelongingToContainer,
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new Function<String, StorageMetadata>() {
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public StorageMetadata apply(String key) {
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Blob oldBlob = loadFileBlob(container, key);
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Blob oldBlob = loadBlob(container, key);
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checkState(oldBlob != null, "blob " + key + " is not present although it was in the list of "
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+ container);
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checkState(oldBlob.getMetadata() != null, "blob " + container + "/" + key + " has no metadata");
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@ -342,13 +341,6 @@ public class FilesystemAsyncBlobStore extends BaseAsyncBlobStore {
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return immediateFuture(result);
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}
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public String getFirstQueryOrNull(String string, @Nullable HttpRequestOptions options) {
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if (options == null)
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return null;
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Collection<String> values = options.buildQueryParameters().get(string);
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return (values != null && values.size() >= 1) ? values.iterator().next() : null;
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}
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/**
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* Load the blob with the given key belonging to the container with the given
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* name. There must exist a resource on the file system whose complete name
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@ -361,7 +353,7 @@ public class FilesystemAsyncBlobStore extends BaseAsyncBlobStore {
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*
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* @return the blob belonging to the given container with the given key
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*/
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private Blob loadFileBlob(String container, String key) {
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private Blob loadBlob(final String container, final String key) {
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logger.debug("Opening blob in container: %s - %s", container, key);
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BlobBuilder builder = blobUtils.blobBuilder();
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builder.name(key);
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@ -527,7 +519,7 @@ public class FilesystemAsyncBlobStore extends BaseAsyncBlobStore {
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return immediateFuture(null);
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}
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Blob blob = loadFileBlob(containerName, key);
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Blob blob = loadBlob(containerName, key);
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if (options != null) {
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if (options.getIfMatch() != null) {
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@ -26,6 +26,7 @@ import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import javax.inject.Inject;
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@ -37,6 +38,7 @@ import org.jclouds.blobstore.TransientAsyncBlobStore;
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import org.jclouds.blobstore.domain.Blob;
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import org.jclouds.blobstore.domain.BlobMetadata;
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import org.jclouds.blobstore.domain.PageSet;
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import org.jclouds.blobstore.domain.StorageMetadata;
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import org.jclouds.blobstore.functions.HttpGetOptionsListToGetOptions;
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import org.jclouds.blobstore.options.ListContainerOptions;
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import org.jclouds.concurrent.Futures;
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@ -55,6 +57,7 @@ import org.jclouds.openstack.swift.domain.ObjectInfo;
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import org.jclouds.openstack.swift.domain.SwiftObject;
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import com.google.common.base.Function;
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import com.google.common.base.Throwables;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Sets;
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import com.google.common.util.concurrent.ListenableFuture;
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@ -74,18 +77,16 @@ public class StubSwiftAsyncClient implements CommonSwiftAsyncClient {
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private final ResourceToObjectInfo blob2ObjectInfo;
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private final ListContainerOptionsToBlobStoreListContainerOptions container2ContainerListOptions;
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private final ResourceToObjectList resource2ObjectList;
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private final ConcurrentMap<String, ConcurrentMap<String, Blob>> containerToBlobs;
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private final ExecutorService service;
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@Inject
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private StubSwiftAsyncClient(@Named(Constants.PROPERTY_USER_THREADS) ExecutorService service,
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TransientAsyncBlobStore blobStore, ConcurrentMap<String, ConcurrentMap<String, Blob>> containerToBlobs,
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TransientAsyncBlobStore blobStore,
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SwiftObject.Factory objectProvider, HttpGetOptionsListToGetOptions httpGetOptionsConverter,
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ObjectToBlob object2Blob, BlobToObject blob2Object, ResourceToObjectInfo blob2ObjectInfo,
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ListContainerOptionsToBlobStoreListContainerOptions container2ContainerListOptions,
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ResourceToObjectList resource2ContainerList) {
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this.service = service;
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this.containerToBlobs = containerToBlobs;
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this.blobStore = blobStore;
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this.objectProvider = objectProvider;
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this.httpGetOptionsConverter = httpGetOptionsConverter;
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@ -145,10 +146,18 @@ public class StubSwiftAsyncClient implements CommonSwiftAsyncClient {
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public ListenableFuture<? extends Set<ContainerMetadata>> listContainers(
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org.jclouds.openstack.swift.options.ListContainerOptions... options) {
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return immediateFuture(Sets.newHashSet(Iterables.transform(blobStore.getContainerToBlobs().keySet(),
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new Function<String, ContainerMetadata>() {
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public ContainerMetadata apply(String name) {
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return new ContainerMetadata(name, -1, -1, null, new HashMap<String,String>());
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PageSet<? extends StorageMetadata> listing;
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try {
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listing = blobStore.list().get();
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} catch (ExecutionException ee) {
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throw Throwables.propagate(ee);
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} catch (InterruptedException ie) {
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throw Throwables.propagate(ie);
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}
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return immediateFuture(Sets.newHashSet(Iterables.transform(listing,
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new Function<StorageMetadata, ContainerMetadata>() {
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public ContainerMetadata apply(StorageMetadata md) {
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return new ContainerMetadata(md.getName(), -1, -1, null, new HashMap<String,String>());
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}
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})));
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}
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@ -186,7 +195,7 @@ public class StubSwiftAsyncClient implements CommonSwiftAsyncClient {
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@Override
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public ListenableFuture<Boolean> objectExists(String bucketName, String key) {
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return immediateFuture(containerToBlobs.get(bucketName).containsKey(key));
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return blobStore.blobExists(bucketName, key);
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}
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}
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@ -122,9 +122,7 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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protected final DateService dateService;
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protected final Crypto crypto;
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protected final ConcurrentMap<String, ConcurrentMap<String, Blob>> containerToBlobs;
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protected final Provider<UriBuilder> uriBuilders;
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protected final ConcurrentMap<String, Location> containerToLocation;
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protected final HttpGetOptionsListToGetOptions httpGetOptionsConverter;
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protected final IfDirectoryReturnNameStrategy ifDirectoryReturnName;
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protected final Factory blobFactory;
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@ -139,21 +137,15 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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@Named(Constants.PROPERTY_USER_THREADS) ExecutorService service,
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Supplier<Location> defaultLocation,
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@Memoized Supplier<Set<? extends Location>> locations,
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Factory blobFactory,
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ConcurrentMap<String, ConcurrentMap<String, Blob>> containerToBlobs, Provider<UriBuilder> uriBuilders,
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ConcurrentMap<String, Location> containerToLocation) {
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Factory blobFactory, Provider<UriBuilder> uriBuilders) {
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super(context, blobUtils, service, defaultLocation, locations);
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this.blobFactory = blobFactory;
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this.dateService = dateService;
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this.crypto = crypto;
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this.containerToBlobs = containerToBlobs;
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this.uriBuilders = uriBuilders;
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this.containerToLocation = containerToLocation;
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this.httpGetOptionsConverter = httpGetOptionsConverter;
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this.ifDirectoryReturnName = ifDirectoryReturnName;
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getContainerToLocation().put("stub", defaultLocation.get());
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getContainerToBlobs().put("stub", new ConcurrentHashMap<String, Blob>());
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this.storageStrategy = new TransientStorageStrategy();
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this.storageStrategy = new TransientStorageStrategy(defaultLocation);
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}
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/**
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@ -161,16 +153,18 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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*/
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@Override
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public ListenableFuture<PageSet<? extends StorageMetadata>> list(final String container, ListContainerOptions options) {
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final Map<String, Blob> realContents = getContainerToBlobs().get(container);
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// Check if the container exists
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if (realContents == null)
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if (!storageStrategy.containerExists(container))
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return immediateFailedFuture(cnfe(container));
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SortedSet<StorageMetadata> contents = newTreeSet(transform(realContents.keySet(),
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// Loading blobs from container
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Iterable<String> blobBelongingToContainer = storageStrategy.getBlobKeysInsideContainer(container);
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SortedSet<StorageMetadata> contents = newTreeSet(transform(blobBelongingToContainer,
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new Function<String, StorageMetadata>() {
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public StorageMetadata apply(String key) {
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Blob oldBlob = realContents.get(key);
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Blob oldBlob = loadBlob(container, key);
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checkState(oldBlob != null, "blob " + key + " is not present although it was in the list of "
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+ container);
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checkState(oldBlob.getMetadata() != null, "blob " + container + "/" + key + " has no metadata");
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@ -297,7 +291,7 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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*/
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@Override
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public ListenableFuture<Void> clearContainer(final String container) {
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getContainerToBlobs().get(container).clear();
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storageStrategy.clearContainer(container);
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return immediateFuture(null);
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}
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@ -313,7 +307,7 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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public ListenableFuture<Boolean> deleteContainerIfEmpty(final String container) {
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Boolean returnVal = true;
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if (storageStrategy.containerExists(container)) {
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if (getContainerToBlobs().get(container).size() == 0)
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if (Iterables.isEmpty(storageStrategy.getBlobKeysInsideContainer(container)))
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storageStrategy.deleteContainer(container);
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else
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returnVal = false;
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@ -342,7 +336,7 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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MutableStorageMetadata cmd = create();
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cmd.setName(name);
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cmd.setType(StorageType.CONTAINER);
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cmd.setLocation(getContainerToLocation().get(name));
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cmd.setLocation(storageStrategy.getLocation(name));
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return cmd;
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}
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}), null));
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@ -356,20 +350,15 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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* {@inheritDoc}
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*/
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@Override
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public ListenableFuture<Boolean> createContainerInLocation(final Location location, final String name) {
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if (storageStrategy.containerExists(name)) {
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return immediateFuture(Boolean.FALSE);
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}
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getContainerToBlobs().put(name, new ConcurrentHashMap<String, Blob>());
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getContainerToLocation().put(name, location != null ? location : defaultLocation.get());
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return immediateFuture(Boolean.TRUE);
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public ListenableFuture<Boolean> createContainerInLocation(final Location location,
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final String name) {
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boolean result = storageStrategy.createContainerInLocation(name, location);
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return immediateFuture(result);
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}
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public String getFirstQueryOrNull(String string, @Nullable HttpRequestOptions options) {
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if (options == null)
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return null;
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Collection<String> values = options.buildQueryParameters().get(string);
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return (values != null && values.size() >= 1) ? values.iterator().next() : null;
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private Blob loadBlob(final String container, final String key) {
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logger.debug("Opening blob in container: %s - %s", container, key);
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return storageStrategy.getBlob(container, key);
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}
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protected static class DelimiterFilter implements Predicate<StorageMetadata> {
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@ -477,22 +466,21 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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public ListenableFuture<String> putBlob(String containerName, Blob blob) {
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checkNotNull(containerName, "containerName must be set");
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checkNotNull(blob, "blob must be set");
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ConcurrentMap<String, Blob> container = getContainerToBlobs().get(containerName);
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String blobKey = blob.getMetadata().getName();
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logger.debug("Put blob with key [%s] to container [%s]", blobKey, containerName);
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if (container == null) {
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if (!storageStrategy.containerExists(containerName)) {
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return Futures.immediateFailedFuture(new IllegalStateException("containerName not found: " + containerName));
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}
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blob = createUpdatedCopyOfBlobInContainer(containerName, blob);
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container.put(blob.getMetadata().getName(), blob);
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storageStrategy.putBlob(containerName, blob);
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return immediateFuture(Iterables.getOnlyElement(blob.getAllHeaders().get(HttpHeaders.ETAG)));
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}
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protected Blob createUpdatedCopyOfBlobInContainer(String containerName, Blob in) {
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private Blob createUpdatedCopyOfBlobInContainer(String containerName, Blob in) {
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checkNotNull(in, "blob");
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checkNotNull(in.getPayload(), "blob.payload");
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ByteArrayPayload payload = (in.getPayload() instanceof ByteArrayPayload) ? ByteArrayPayload.class.cast(in
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@ -558,13 +546,12 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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return immediateFailedFuture(cnfe(containerName));
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}
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// If the blob doesn't exist, a null object is returned
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Map<String, Blob> realContents = getContainerToBlobs().get(containerName);
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if (!realContents.containsKey(key)) {
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if (!storageStrategy.blobExists(containerName, key)) {
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logger.debug("Item %s does not exist in container %s", key, containerName);
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return immediateFuture(null);
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}
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Blob blob = realContents.get(key);
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Blob blob = loadBlob(containerName, key);
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if (options != null) {
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if (options.getIfMatch() != null) {
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@ -652,20 +639,12 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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return returnVal;
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}
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public ConcurrentMap<String, ConcurrentMap<String, Blob>> getContainerToBlobs() {
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return containerToBlobs;
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}
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@Override
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protected boolean deleteAndVerifyContainerGone(final String container) {
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storageStrategy.deleteContainer(container);
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return storageStrategy.containerExists(container);
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}
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private ConcurrentMap<String, Location> getContainerToLocation() {
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return containerToLocation;
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}
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@Override
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public ListenableFuture<String> putBlob(String container, Blob blob, PutOptions options) {
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// TODO implement options
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@ -679,29 +658,4 @@ public class TransientAsyncBlobStore extends BaseAsyncBlobStore {
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throw new UnsupportedOperationException("publicRead");
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return createContainerInLocation(location, container);
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}
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private class TransientStorageStrategy {
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public Iterable<String> getAllContainerNames() {
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return getContainerToBlobs().keySet();
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}
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public boolean containerExists(final String containerName) {
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return getContainerToBlobs().containsKey(containerName);
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}
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public void deleteContainer(final String containerName) {
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getContainerToBlobs().remove(containerName);
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}
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public boolean blobExists(final String containerName, final String blobName) {
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Map<String, Blob> map = containerToBlobs.get(containerName);
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return map != null && map.containsKey(blobName);
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}
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public void removeBlob(final String containerName, final String blobName) {
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if (storageStrategy.containerExists(containerName)) {
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getContainerToBlobs().get(containerName).remove(blobName);
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}
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}
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}
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}
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@ -0,0 +1,92 @@
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/**
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* Licensed to jclouds, Inc. (jclouds) under one or more
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* contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. jclouds licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.jclouds.blobstore;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import com.google.common.base.Preconditions;
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import com.google.common.base.Supplier;
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import org.jclouds.blobstore.domain.Blob;
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import org.jclouds.domain.Location;
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public class TransientStorageStrategy {
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private final ConcurrentMap<String, ConcurrentMap<String, Blob>> containerToBlobs = new ConcurrentHashMap<String, ConcurrentMap<String, Blob>>();
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private final ConcurrentMap<String, Location> containerToLocation = new ConcurrentHashMap<String, Location>();
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private final Supplier<Location> defaultLocation;
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public TransientStorageStrategy(final Supplier<Location> defaultLocation) {
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this.defaultLocation = Preconditions.checkNotNull(defaultLocation);
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}
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public Iterable<String> getAllContainerNames() {
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return containerToBlobs.keySet();
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}
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public boolean containerExists(final String containerName) {
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return containerToBlobs.containsKey(containerName);
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}
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public void clearContainer(final String containerName) {
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containerToBlobs.get(containerName).clear();
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}
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public boolean createContainerInLocation(final String containerName, final Location location) {
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ConcurrentMap<String, Blob> origValue = containerToBlobs.putIfAbsent(
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containerName, new ConcurrentHashMap<String, Blob>());
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if (origValue != null) {
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return false;
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}
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containerToLocation.put(containerName, location != null ? location : defaultLocation.get());
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return true;
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}
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public void deleteContainer(final String containerName) {
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containerToBlobs.remove(containerName);
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}
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public boolean blobExists(final String containerName, final String blobName) {
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Map<String, Blob> map = containerToBlobs.get(containerName);
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return map != null && map.containsKey(blobName);
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}
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public Blob getBlob(final String containerName, final String blobName) {
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Map<String, Blob> map = containerToBlobs.get(containerName);
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return map == null ? null : map.get(blobName);
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}
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public void putBlob(final String containerName, final Blob blob) {
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Map<String, Blob> map = containerToBlobs.get(containerName);
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map.put(blob.getMetadata().getName(), blob);
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}
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public void removeBlob(final String containerName, final String blobName) {
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containerToBlobs.get(containerName).remove(blobName);
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}
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public Iterable<String> getBlobKeysInsideContainer(final String containerName) {
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return containerToBlobs.get(containerName).keySet();
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}
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public Location getLocation(final String containerName) {
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return containerToLocation.get(containerName);
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}
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}
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@ -18,9 +18,6 @@
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*/
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package org.jclouds.blobstore.config;
|
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|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentMap;
|
||||
|
||||
import org.jclouds.blobstore.AsyncBlobStore;
|
||||
import org.jclouds.blobstore.BlobRequestSigner;
|
||||
import org.jclouds.blobstore.BlobStore;
|
||||
|
|
@ -41,20 +38,11 @@ import com.google.inject.TypeLiteral;
|
|||
* @author Adrian Cole
|
||||
*/
|
||||
public class TransientBlobStoreContextModule extends AbstractModule {
|
||||
|
||||
// must be singleton for all threads and all objects or tests may fail;
|
||||
static final ConcurrentHashMap<String, ConcurrentMap<String, Blob>> map = new ConcurrentHashMap<String, ConcurrentMap<String, Blob>>();
|
||||
static final ConcurrentHashMap<String, Location> containerToLocation = new ConcurrentHashMap<String, Location>();
|
||||
|
||||
@Override
|
||||
protected void configure() {
|
||||
bind(AsyncBlobStore.class).to(TransientAsyncBlobStore.class).asEagerSingleton();
|
||||
// forward all requests from TransientBlobStore to TransientAsyncBlobStore. needs above binding as cannot proxy a class
|
||||
BinderUtils.bindClient(binder(), TransientBlobStore.class, AsyncBlobStore.class, ImmutableMap.<Class<?>, Class<?>>of());
|
||||
bind(new TypeLiteral<ConcurrentMap<String, ConcurrentMap<String, Blob>>>() {
|
||||
}).toInstance(map);
|
||||
bind(new TypeLiteral<ConcurrentMap<String, Location>>() {
|
||||
}).toInstance(containerToLocation);
|
||||
install(new BlobStoreObjectModule());
|
||||
install(new BlobStoreMapModule());
|
||||
bind(BlobStore.class).to(TransientBlobStore.class);
|
||||
|
|
|
|||
Loading…
Reference in New Issue