com.microsoft.azure.storage.file.CloudFileDirectory Maven / Gradle / Ivy
/**
* Copyright Microsoft Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.microsoft.azure.storage.file;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import com.microsoft.azure.storage.AccessCondition;
import com.microsoft.azure.storage.Constants;
import com.microsoft.azure.storage.DoesServiceRequest;
import com.microsoft.azure.storage.OperationContext;
import com.microsoft.azure.storage.ResultContinuation;
import com.microsoft.azure.storage.ResultContinuationType;
import com.microsoft.azure.storage.ResultSegment;
import com.microsoft.azure.storage.StorageCredentials;
import com.microsoft.azure.storage.StorageCredentialsSharedAccessSignature;
import com.microsoft.azure.storage.StorageErrorCodeStrings;
import com.microsoft.azure.storage.StorageException;
import com.microsoft.azure.storage.StorageUri;
import com.microsoft.azure.storage.core.BaseResponse;
import com.microsoft.azure.storage.core.ExecutionEngine;
import com.microsoft.azure.storage.core.LazySegmentedIterable;
import com.microsoft.azure.storage.core.ListResponse;
import com.microsoft.azure.storage.core.ListingContext;
import com.microsoft.azure.storage.core.PathUtility;
import com.microsoft.azure.storage.core.RequestLocationMode;
import com.microsoft.azure.storage.core.SR;
import com.microsoft.azure.storage.core.SegmentedStorageRequest;
import com.microsoft.azure.storage.core.SharedAccessSignatureHelper;
import com.microsoft.azure.storage.core.StorageRequest;
import com.microsoft.azure.storage.core.Utility;
/**
* Represents a virtual directory of files.
*
* Directories, which are encapsulated as {@link CloudFileDirectory} objects, hold files and can also contain
* sub-directories.
*/
public final class CloudFileDirectory implements ListFileItem {
/**
* Holds the share reference.
*/
private CloudFileShare share;
/**
* Represents the parent directory.
*/
private CloudFileDirectory parent;
/**
* Represents the File client.
*/
private CloudFileClient fileServiceClient;
/**
* Holds the list of URIs for all locations.
*/
private StorageUri storageUri;
/**
* Holds the name of the directory.
*/
private String name;
/**
* Represents the directory metadata.
*/
private HashMap metadata = new HashMap();
/**
* Holds a FileDirectoryProperties object that holds the directory's system properties.
*/
private FileDirectoryProperties properties = new FileDirectoryProperties();
/**
* Creates an instance of the CloudFileDirectory class using an absolute URI to the directory.
*
* @param directoryAbsoluteUri
* A {@link URI} that represents the file directory's address.
* @throws StorageException
* @throws URISyntaxException
*/
public CloudFileDirectory(final URI directoryAbsoluteUri) throws StorageException, URISyntaxException {
this(new StorageUri(directoryAbsoluteUri));
}
/**
* Creates an instance of the CloudFileDirectory class using an absolute URI to the directory.
*
* @param directoryAbsoluteUri
* A {@link StorageUri} that represents the file directory's address.
* @throws StorageException
* @throws URISyntaxException
*/
public CloudFileDirectory(final StorageUri directoryAbsoluteUri) throws StorageException, URISyntaxException {
this(directoryAbsoluteUri, (StorageCredentials) null);
}
/**
* Creates an instance of the CloudFileDirectory class using an absolute URI to the directory
* and credentials.
*
* @param directoryAbsoluteUri
* A {@link URI} that represents the file directory's address.
* @param credentials
* A {@link StorageCredentials} object used to authenticate access.
* @throws StorageException
* @throws URISyntaxException
*/
public CloudFileDirectory(final URI directoryAbsoluteUri, final StorageCredentials credentials)
throws StorageException, URISyntaxException {
this(new StorageUri(directoryAbsoluteUri), credentials);
}
/**
* Creates an instance of the CloudFileDirectory class using an absolute URI to the directory
* and credentials.
*
* @param directoryAbsoluteUri
* A {@link StorageUri} that represents the file directory's address.
* @param credentials
* A {@link StorageCredentials} object used to authenticate access.
* @throws StorageException
* @throws URISyntaxException
*/
public CloudFileDirectory(final StorageUri directoryAbsoluteUri, final StorageCredentials credentials)
throws StorageException, URISyntaxException {
this.parseQueryAndVerify(directoryAbsoluteUri, credentials);
}
/**
* Creates an instance of the CloudFileDirectory class using the specified address, share,
* and client.
*
* @param uri
* A {@link StorageUri} that represents the file directory's address.
* @param directoryName
* A String that represents the name of the directory.
* @param share
* A {@link CloudFileShare} object that represents the associated file share.
*/
protected CloudFileDirectory(final StorageUri uri, final String directoryName, final CloudFileShare share) {
Utility.assertNotNull("uri", uri);
Utility.assertNotNull("directoryName", directoryName);
Utility.assertNotNull("share", share);
this.name = directoryName;
this.fileServiceClient = share.getServiceClient();
this.share = share;
this.storageUri = uri;
}
/**
* Creates the directory.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public void create() throws StorageException, URISyntaxException {
this.create(null /* options */, null /* opContext */);
}
/**
* Creates the directory using the specified options and operation context.
*
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public void create(FileRequestOptions options, OperationContext opContext) throws StorageException, URISyntaxException {
if (opContext == null) {
opContext = new OperationContext();
}
this.getShare().assertNoSnapshot();
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
ExecutionEngine.executeWithRetry(this.fileServiceClient, this, createDirectoryImpl(options),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest createDirectoryImpl(
final FileRequestOptions options) {
final StorageRequest putRequest =
new StorageRequest(options, this.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(CloudFileClient client, CloudFileDirectory directory,
OperationContext context) throws Exception {
final HttpURLConnection request = FileRequest.createDirectory(
directory.getTransformedAddress().getUri(this.getCurrentLocation()), options, context);
return request;
}
@Override
public void setHeaders(HttpURLConnection connection, CloudFileDirectory directory, OperationContext context) {
FileRequest.addMetadata(connection, directory.getMetadata(), context);
}
@Override
public void signRequest(HttpURLConnection connection, CloudFileClient client, OperationContext context)
throws Exception {
StorageRequest.signBlobQueueAndFileRequest(connection, client, 0L, context);
}
@Override
public Void preProcessResponse(CloudFileDirectory directory, CloudFileClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_CREATED) {
this.setNonExceptionedRetryableFailure(true);
return null;
}
// Set attributes
final FileDirectoryAttributes attributes = FileResponse
.getFileDirectoryAttributes(this.getConnection(), client.isUsePathStyleUris());
directory.setProperties(attributes.getProperties());
this.getResult().setRequestServiceEncrypted(BaseResponse.isServerRequestEncrypted(this.getConnection()));
return null;
}
};
return putRequest;
}
/**
* Creates the directory if it does not exist.
*
* @return true if the directory did not already exist and was created; otherwise, false.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public boolean createIfNotExists() throws StorageException, URISyntaxException {
return this.createIfNotExists(null /* options */, null /* opContext */);
}
/**
* Creates the directory if it does not exist, using the specified request options and operation context.
*
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request.
* Specifying null will use the default request options from the associated service client
* ({@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @return true if the directory did not already exist and was created; otherwise, false.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public boolean createIfNotExists(FileRequestOptions options, OperationContext opContext) throws StorageException, URISyntaxException {
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
this.getShare().assertNoSnapshot();
boolean exists = this.exists(true /* primaryOnly */, null /* accessCondition */, options, opContext);
if (exists) {
return false;
}
else {
try {
this.create(options, opContext);
return true;
}
catch (StorageException e) {
if (e.getHttpStatusCode() == HttpURLConnection.HTTP_CONFLICT
&& StorageErrorCodeStrings.RESOURCE_ALREADY_EXISTS.equals(e.getErrorCode())) {
return false;
}
else {
throw e;
}
}
}
}
/**
* Deletes the directory.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public void delete() throws StorageException, URISyntaxException {
this.delete(null /* accessCondition */, null /* options */, null /* opContext */);
}
/**
* Deletes the directory using the specified request options and operation context.
*
* @param accessCondition
* An {@link AccessCondition} object that represents the access conditions for the directory.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public void delete(AccessCondition accessCondition, FileRequestOptions options, OperationContext opContext)
throws StorageException, URISyntaxException {
if (opContext == null) {
opContext = new OperationContext();
}
this.getShare().assertNoSnapshot();
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
ExecutionEngine.executeWithRetry(this.fileServiceClient, this, deleteDirectoryImpl(accessCondition, options),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest deleteDirectoryImpl(
final AccessCondition accessCondition, final FileRequestOptions options) {
final StorageRequest putRequest =
new StorageRequest(options, this.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(CloudFileClient client, CloudFileDirectory directory,
OperationContext context) throws Exception {
return FileRequest.deleteDirectory(directory.getTransformedAddress().getUri(this.getCurrentLocation()), options, context,
accessCondition);
}
@Override
public void signRequest(HttpURLConnection connection, CloudFileClient client, OperationContext context)
throws Exception {
StorageRequest.signBlobQueueAndFileRequest(connection, client, -1L, context);
}
@Override
public Void preProcessResponse(CloudFileDirectory directory, CloudFileClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_ACCEPTED) {
this.setNonExceptionedRetryableFailure(true);
}
return null;
}
};
return putRequest;
}
/**
* Deletes the directory if it exists.
*
* @return true if the directory did not already exist and was created; otherwise, false.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public boolean deleteIfExists() throws StorageException, URISyntaxException {
return this.deleteIfExists(null /* accessCondition */, null /* options */, null /* opContext */);
}
/**
* Deletes the directory if it exists using the specified request options and operation context.
*
* @param accessCondition
* An {@link AccessCondition} object that represents the access conditions for the directory.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @return true if the directory existed and was deleted; otherwise, false.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public boolean deleteIfExists(AccessCondition accessCondition, FileRequestOptions options,
OperationContext opContext) throws StorageException, URISyntaxException {
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
boolean exists = this.exists(true /* primaryOnly */, accessCondition, options, opContext);
if (exists) {
try {
this.delete(accessCondition, options, opContext);
return true;
}
catch (StorageException e) {
if (e.getHttpStatusCode() == HttpURLConnection.HTTP_NOT_FOUND
&& StorageErrorCodeStrings.RESOURCE_NOT_FOUND.equals(e.getErrorCode())) {
return false;
}
else {
throw e;
}
}
}
else {
return false;
}
}
/**
* Returns a value that indicates whether the directory exists.
*
* @return true if the directory exists, otherwise false.
*
* @throws StorageException
* If a storage service error occurred.
*/
@DoesServiceRequest
public boolean exists() throws StorageException {
return this.exists(null /* accessCondition */, null /* options */, null /* opContext */);
}
/**
* Returns a value that indicates whether the directory exists, using the specified request options and operation
* context.
*
* @param accessCondition
* An {@link AccessCondition} object that represents the access conditions for the share.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @return true if the directory exists, otherwise false.
*
* @throws StorageException
* If a storage service error occurred.
*/
@DoesServiceRequest
public boolean exists(final AccessCondition accessCondition, FileRequestOptions options, OperationContext opContext)
throws StorageException {
return this.exists(false, accessCondition, options, opContext);
}
@DoesServiceRequest
private boolean exists(final boolean primaryOnly, final AccessCondition accessCondition,
FileRequestOptions options, OperationContext opContext) throws StorageException {
if (opContext == null) {
opContext = new OperationContext();
}
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
return ExecutionEngine.executeWithRetry(this.fileServiceClient, this,
this.existsImpl(primaryOnly, accessCondition, options), options.getRetryPolicyFactory(), opContext);
}
private StorageRequest existsImpl(final boolean primaryOnly,
final AccessCondition accessCondition, final FileRequestOptions options) {
final StorageRequest getRequest =
new StorageRequest(options, this.getStorageUri()) {
@Override
public void setRequestLocationMode() {
this.setRequestLocationMode(primaryOnly ? RequestLocationMode.PRIMARY_ONLY
: RequestLocationMode.PRIMARY_OR_SECONDARY);
}
@Override
public HttpURLConnection buildRequest(CloudFileClient client, CloudFileDirectory directory,
OperationContext context) throws Exception {
return FileRequest.getDirectoryProperties(
directory.getTransformedAddress().getUri(this.getCurrentLocation()), options, context,
accessCondition, directory.getShare().snapshotID);
}
@Override
public void signRequest(HttpURLConnection connection, CloudFileClient client, OperationContext context)
throws Exception {
StorageRequest.signBlobQueueAndFileRequest(connection, client, -1L, context);
}
@Override
public Boolean preProcessResponse(CloudFileDirectory directory, CloudFileClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() == HttpURLConnection.HTTP_OK) {
directory.updatePropertiesFromResponse(this.getConnection());
// Set properties
final FileDirectoryAttributes attributes =
FileResponse.getFileDirectoryAttributes(this.getConnection(), client.isUsePathStyleUris());
directory.setMetadata(attributes.getMetadata());
directory.setProperties(attributes.getProperties());
return Boolean.valueOf(true);
}
else if (this.getResult().getStatusCode() == HttpURLConnection.HTTP_NOT_FOUND) {
return Boolean.valueOf(false);
}
else {
this.setNonExceptionedRetryableFailure(true);
// return false instead of null to avoid SCA issues
return false;
}
}
};
return getRequest;
}
private void updatePropertiesFromResponse(HttpURLConnection request) {
// ETag
this.getProperties().setEtag(request.getHeaderField(Constants.HeaderConstants.ETAG));
// Last Modified
if (0 != request.getLastModified()) {
final Calendar lastModifiedCalendar = Calendar.getInstance(Utility.LOCALE_US);
lastModifiedCalendar.setTimeZone(Utility.UTC_ZONE);
lastModifiedCalendar.setTime(new Date(request.getLastModified()));
this.getProperties().setLastModified(lastModifiedCalendar.getTime());
}
}
/**
* Uploads the directory's metadata.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public void uploadMetadata() throws StorageException, URISyntaxException {
this.uploadMetadata(null /* accessCondition */, null /* options */, null /* opContext */);
}
/**
* Uploads the directory's metadata using the specified request options and operation context.
*
* @param accessCondition
* An {@link AccessCondition} object that represents the access conditions for the directory.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
@DoesServiceRequest
public void uploadMetadata(AccessCondition accessCondition, FileRequestOptions options, OperationContext opContext)
throws StorageException, URISyntaxException {
if (opContext == null) {
opContext = new OperationContext();
}
this.getShare().assertNoSnapshot();
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
ExecutionEngine.executeWithRetry(this.fileServiceClient, this,
this.uploadMetadataImpl(accessCondition, options), options.getRetryPolicyFactory(), opContext);
}
private StorageRequest uploadMetadataImpl(
final AccessCondition accessCondition, final FileRequestOptions options) {
final StorageRequest putRequest =
new StorageRequest(
options, this.getStorageUri()) {
@Override
public HttpURLConnection buildRequest(
CloudFileClient client, CloudFileDirectory directory, OperationContext context) throws Exception {
return FileRequest.setDirectoryMetadata(directory.getTransformedAddress().getUri(this.getCurrentLocation()),
options, context, accessCondition);
}
@Override
public void setHeaders(HttpURLConnection connection, CloudFileDirectory directory, OperationContext context) {
FileRequest.addMetadata(connection, directory.getMetadata(), context);
}
@Override
public void signRequest(HttpURLConnection connection, CloudFileClient client, OperationContext context)
throws Exception {
StorageRequest.signBlobQueueAndFileRequest(connection, client, 0L, context);
}
@Override
public Void preProcessResponse(CloudFileDirectory directory, CloudFileClient client, OperationContext context)
throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_OK) {
this.setNonExceptionedRetryableFailure(true);
}
directory.updatePropertiesFromResponse(this.getConnection());
this.getResult().setRequestServiceEncrypted(BaseResponse.isServerRequestEncrypted(this.getConnection()));
return null;
}
};
return putRequest;
}
/**
* Downloads the directory's properties.
*
* @throws StorageException
* If a storage service error occurred.
*/
@DoesServiceRequest
public void downloadAttributes() throws StorageException {
this.downloadAttributes(null /* accessCondition */, null /* options */, null /* opContext */);
}
/**
* Downloads the directory's properties using the specified request options and operation context.
*
* @param accessCondition
* An {@link AccessCondition} object that represents the access conditions for the directory.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @throws StorageException
* If a storage service error occurred.
*/
@DoesServiceRequest
public void downloadAttributes(AccessCondition accessCondition, FileRequestOptions options,
OperationContext opContext) throws StorageException {
if (opContext == null) {
opContext = new OperationContext();
}
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
ExecutionEngine.executeWithRetry(this.fileServiceClient, this,
this.downloadAttributesImpl(accessCondition, options), options.getRetryPolicyFactory(), opContext);
}
private StorageRequest downloadAttributesImpl(
final AccessCondition accessCondition, final FileRequestOptions options) {
final StorageRequest getRequest =
new StorageRequest(options, this.getStorageUri()) {
@Override
public void setRequestLocationMode() {
this.setRequestLocationMode(RequestLocationMode.PRIMARY_OR_SECONDARY);
}
@Override
public HttpURLConnection buildRequest(CloudFileClient client, CloudFileDirectory directory,
OperationContext context) throws Exception {
return FileRequest.getDirectoryProperties(
directory.getTransformedAddress().getUri(this.getCurrentLocation()), options, context,
accessCondition, directory.getShare().snapshotID);
}
@Override
public void signRequest(HttpURLConnection connection, CloudFileClient client, OperationContext context)
throws Exception {
StorageRequest.signBlobQueueAndFileRequest(connection, client, -1L, context);
}
@Override
public Void preProcessResponse(CloudFileDirectory directory, CloudFileClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_OK) {
this.setNonExceptionedRetryableFailure(true);
return null;
}
// Set properties
final FileDirectoryAttributes attributes =
FileResponse.getFileDirectoryAttributes(this.getConnection(), client.isUsePathStyleUris());
directory.setMetadata(attributes.getMetadata());
directory.setProperties(attributes.getProperties());
return null;
}
};
return getRequest;
}
/**
* Returns an enumerable collection of file and directory items for the directory.
*
* @return An enumerable collection of {@link ListFileItem} objects that represent the file and directory items in
* this directory.
*/
@DoesServiceRequest
public Iterable listFilesAndDirectories() {
return this.listFilesAndDirectories(null /* prefix */, null /* options */, null /* opContext */);
}
/**
* Returns an enumerable collection of file and directory items for the directory.
*
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @return An enumerable collection of {@link ListFileItem} objects that represent the file and directory items in
* this directory.
*/
@DoesServiceRequest
public Iterable listFilesAndDirectories(FileRequestOptions options, OperationContext opContext) {
return listFilesAndDirectories(null /* prefix */, options, opContext);
}
/**
* Returns an enumerable collection of file and directory items for the directory.
*
* @param prefix
* A string containing the file or directory name prefix.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for the request. Specifying
* null will use the default request options from the associated service client (
* {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current operation. This object
* is used to track requests to the storage service, and to provide additional runtime information about
* the operation.
*
* @return An enumerable collection of {@link ListFileItem} objects that represent the file and directory items in
* this directory.
*/
@DoesServiceRequest
public Iterable listFilesAndDirectories(
String prefix, FileRequestOptions options, OperationContext opContext) {
if (opContext == null) {
opContext = new OperationContext();
}
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
SegmentedStorageRequest segmentedRequest = new SegmentedStorageRequest();
return new LazySegmentedIterable(
this.listFilesAndDirectoriesSegmentedImpl(prefix, null /* maxResults */, options, segmentedRequest),
this.fileServiceClient, this,
options.getRetryPolicyFactory(), opContext);
}
/**
* Returns a result segment of an enumerable collection of files and directories for this File service client.
*
* @return A {@link ResultSegment} object that contains a segment of the enumerable collection of
* {@link ListFileItem} objects that represent the files and directories.
* @throws StorageException
*/
@DoesServiceRequest
public ResultSegment listFilesAndDirectoriesSegmented() throws StorageException {
return this.listFilesAndDirectoriesSegmented(null /* prefix */, null /* maxResults */,
null /* continuationToken */, null /* options */, null /* opContext */);
}
/**
* Returns a result segment of an enumerable collection of files and directories for this directory, using the
* specified listing details options, request options, and operation context.
*
* @param maxResults
* The maximum number of results to retrieve. If null or greater
* than 5000, the server will return up to 5,000 items. Must be at least 1.
* @param continuationToken
* A {@link ResultContinuation} object that represents a continuation token
* returned by a previous listing operation.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for
* the request. Specifying null will use the default request options
* from the associated service client ( {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current
* operation. This object is used to track requests to the storage service,
* and to provide additional runtime information about the operation.
*
* @return A {@link ResultSegment} object that contains a segment of the enumerable collection of
* {@link ListFileItem} objects that represent the files and directories in this directory.
*
* @throws StorageException
* If a storage service error occurred.
*/
@DoesServiceRequest
public ResultSegment listFilesAndDirectoriesSegmented(final Integer maxResults,
final ResultContinuation continuationToken, FileRequestOptions options, OperationContext opContext)
throws StorageException {
return listFilesAndDirectoriesSegmented(null, maxResults, continuationToken, options, opContext);
}
/**
* Returns a result segment of an enumerable collection of files and directories for this directory, using the
* specified listing details options, request options, and operation context.
*
* @param prefix
* A string containing the file or directory name prefix.
* @param maxResults
* The maximum number of results to retrieve. If null or greater
* than 5000, the server will return up to 5,000 items. Must be at least 1.
* @param continuationToken
* A {@link ResultContinuation} object that represents a continuation token
* returned by a previous listing operation.
* @param options
* A {@link FileRequestOptions} object that specifies any additional options for
* the request. Specifying null will use the default request options
* from the associated service client ( {@link CloudFileClient}).
* @param opContext
* An {@link OperationContext} object that represents the context for the current
* operation. This object is used to track requests to the storage service,
* and to provide additional runtime information about the operation.
*
* @return A {@link ResultSegment} object that contains a segment of the enumerable collection of
* {@link ListFileItem} objects that represent the files and directories in this directory.
*
* @throws StorageException
* If a storage service error occurred.
*/
@DoesServiceRequest
public ResultSegment listFilesAndDirectoriesSegmented(final String prefix, final Integer maxResults,
final ResultContinuation continuationToken, FileRequestOptions options, OperationContext opContext)
throws StorageException {
if (opContext == null) {
opContext = new OperationContext();
}
opContext.initialize();
options = FileRequestOptions.populateAndApplyDefaults(options, this.fileServiceClient);
Utility.assertContinuationType(continuationToken, ResultContinuationType.FILE);
SegmentedStorageRequest segmentedRequest = new SegmentedStorageRequest();
segmentedRequest.setToken(continuationToken);
return ExecutionEngine.executeWithRetry(this.fileServiceClient, this,
this.listFilesAndDirectoriesSegmentedImpl(prefix, maxResults, options, segmentedRequest),
options.getRetryPolicyFactory(), opContext);
}
private StorageRequest> listFilesAndDirectoriesSegmentedImpl(
final String prefix, final Integer maxResults, final FileRequestOptions options, final SegmentedStorageRequest segmentedRequest) {
Utility.assertContinuationType(segmentedRequest.getToken(), ResultContinuationType.FILE);
final ListingContext listingContext = new ListingContext(prefix, maxResults);
final StorageRequest> getRequest =
new StorageRequest>(
options, this.getStorageUri()) {
@Override
public void setRequestLocationMode() {
this.setRequestLocationMode(Utility.getListingLocationMode(segmentedRequest.getToken()));
}
@Override
public HttpURLConnection buildRequest(CloudFileClient client, CloudFileDirectory directory,
OperationContext context) throws Exception {
listingContext.setMarker(segmentedRequest.getToken() != null ? segmentedRequest.getToken()
.getNextMarker() : null);
return FileRequest.listFilesAndDirectories(
directory.getTransformedAddress().getUri(this.getCurrentLocation()),
options, context, listingContext, directory.getShare().snapshotID);
}
@Override
public void signRequest(HttpURLConnection connection, CloudFileClient client, OperationContext context)
throws Exception {
StorageRequest.signBlobQueueAndFileRequest(connection, client, -1L, context);
}
@Override
public ResultSegment preProcessResponse(CloudFileDirectory directory, CloudFileClient client,
OperationContext context) throws Exception {
if (this.getResult().getStatusCode() != HttpURLConnection.HTTP_OK) {
this.setNonExceptionedRetryableFailure(true);
}
return null;
}
@Override
public ResultSegment postProcessResponse(HttpURLConnection connection,
CloudFileDirectory directory, CloudFileClient client, OperationContext context,
ResultSegment storageObject) throws Exception {
final ListResponse response = FileListHandler.getFileAndDirectoryList(this
.getConnection().getInputStream(), directory);
ResultContinuation newToken = null;
if (response.getNextMarker() != null) {
newToken = new ResultContinuation();
newToken.setNextMarker(response.getNextMarker());
newToken.setContinuationType(ResultContinuationType.FILE);
newToken.setTargetLocation(this.getResult().getTargetLocation());
}
final ResultSegment resSegment = new ResultSegment(response.getResults(),
response.getMaxResults(), newToken);
// Important for listFilesAndDirectories because this is required by the lazy iterator between executions.
segmentedRequest.setToken(resSegment.getContinuationToken());
return resSegment;
}
};
return getRequest;
}
/**
* Returns a reference to a {@link CloudFile} object that represents a file in this directory.
*
* @param fileName
* A String that represents the name of the file.
*
* @return A {@link CloudFile} object that represents a reference to the specified file.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
* If the resource URI is invalid.
*/
public CloudFile getFileReference(final String fileName) throws URISyntaxException, StorageException {
Utility.assertNotNullOrEmpty("fileName", fileName);
StorageUri subdirectoryUri = PathUtility.appendPathToUri(this.storageUri, fileName);
return new CloudFile(subdirectoryUri, fileName, this.getShare());
}
/**
* Returns a reference to a {@link CloudFileDirectory} object that represents a directory in this directory.
*
* @param itemName
* A String that represents the name of the directory.
*
* @return A {@link CloudFileDirectory} object that represents a reference to the specified directory.
*
* @throws URISyntaxException
* If the resource URI is invalid.
* @throws StorageException
*/
public CloudFileDirectory getDirectoryReference(final String itemName) throws URISyntaxException,
StorageException {
Utility.assertNotNullOrEmpty("itemName", itemName);
StorageUri subdirectoryUri = PathUtility.appendPathToUri(this.storageUri, itemName);
return new CloudFileDirectory(subdirectoryUri, itemName, this.getShare());
}
/**
* Returns the URI for this directory.
*
* @return A java.net.URI object that represents the URI for this directory.
*/
@Override
public URI getUri() {
return this.storageUri.getPrimaryUri();
}
/**
* Returns the list of URIs for all locations.
*
* @return A {@link StorageUri} that represents the list of URIs for all locations.
*/
@Override
public final StorageUri getStorageUri() {
return this.storageUri;
}
/**
* Returns the File service client associated with this directory.
*
* @return An {@link CloudFileClient} object that represents the service client associated with the directory.
*/
public CloudFileClient getServiceClient() {
return this.fileServiceClient;
}
/**
* Returns the name of this directory.
*
* @return An String that represents the name of the directory.
*/
public String getName() {
return this.name;
}
/**
* Returns the metadata for the directory. This value is initialized with the metadata from the directory
* by a call to {@link #downloadAttributes}, and is set on the directory with a call to {@link #uploadMetadata}.
*
* @return A java.util.HashMap object that represents the metadata for the directory.
*/
public HashMap getMetadata() {
return this.metadata;
}
/**
* Returns the {@link FileDirectoryProperties} object that holds the directory's system properties.
*
* @return A {@link FileDirectoryProperties} object that holds the system properties associated with the
* directory.
*/
public FileDirectoryProperties getProperties() {
return this.properties;
}
/**
* Returns the {@link CloudFileDirectory} parent directory associated with this directory.
*
* @return An {@link CloudFileDirectory} object that represents the parent directory associated with the directory.
* @throws StorageException
* @throws URISyntaxException
*/
@Override
public CloudFileDirectory getParent() throws URISyntaxException, StorageException {
if (this.parent == null) {
final String parentName = CloudFile.getParentNameFromURI(this.getStorageUri(), this.getShare());
if (parentName != null) {
StorageUri parentURI = PathUtility.appendPathToUri(this.getShare().getStorageUri(), parentName);
this.parent = new CloudFileDirectory(parentURI, this.getServiceClient().getCredentials());
}
}
return this.parent;
}
/**
* Returns the share for this directory.
*
* @return A {@link CloudFileShare} that represents the share for this directory.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
* If the resource URI is invalid.
*/
@Override
public CloudFileShare getShare() throws StorageException, URISyntaxException {
if (this.share == null) {
this.share = this.fileServiceClient.getShareReference(PathUtility.getShareNameFromUri(this.getUri(),
this.fileServiceClient.isUsePathStyleUris()));
}
return this.share;
}
/**
* Sets the metadata collection of name-value pairs to be set on the directory with an {@link #uploadMetadata} call.
* This collection will overwrite any existing directory metadata. If this is set to an empty collection, the
* directory metadata will be cleared on an {@link #uploadMetadata} call.
*
* @param metadata
* A java.util.HashMap object that represents the metadata being assigned to the directory.
*/
public void setMetadata(HashMap metadata) {
this.metadata = metadata;
}
/**
* Sets the share for the directory.
*
* @param share
* A {@link CloudFileShare} object that represents the share being assigned to the directory.
*/
protected final void setShare(final CloudFileShare share) {
this.share = share;
}
/**
* Sets the properties for the directory.
*
* @param properties
* A {@link FileDirectoryProperties} object that represents the properties being assigned to the
* directory.
*/
protected final void setProperties(final FileDirectoryProperties properties) {
this.properties = properties;
}
/**
* Sets the list of URIs for all locations.
*
* @param storageUri
* A {@link StorageUri} that represents the list of URIs for all locations.
*/
protected void setStorageUri(final StorageUri storageUri) {
this.storageUri = storageUri;
}
/**
* Verifies the passed in URI. Then parses it and uses its components to populate this resource's properties.
*
* @param completeUri
* A {@link StorageUri} object which represents the complete URI.
* @param credentials
* A {@link StorageCredentials} object used to authenticate access.
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
*/
private void parseQueryAndVerify(final StorageUri completeUri, final StorageCredentials credentials)
throws StorageException, URISyntaxException {
Utility.assertNotNull("completeUri", completeUri);
if (!completeUri.isAbsolute()) {
throw new IllegalArgumentException(String.format(SR.RELATIVE_ADDRESS_NOT_PERMITTED, completeUri.toString()));
}
this.storageUri = PathUtility.stripURIQueryAndFragment(completeUri);
final StorageCredentialsSharedAccessSignature parsedCredentials =
SharedAccessSignatureHelper.parseQuery(completeUri);
if (credentials != null && parsedCredentials != null) {
throw new IllegalArgumentException(SR.MULTIPLE_CREDENTIALS_PROVIDED);
}
try {
final boolean usePathStyleUris = Utility.determinePathStyleFromUri(this.storageUri.getPrimaryUri());
this.fileServiceClient = new CloudFileClient(PathUtility.getServiceClientBaseAddress(
this.getStorageUri(), usePathStyleUris), credentials != null ? credentials : parsedCredentials);
this.name = PathUtility.getDirectoryNameFromURI(this.storageUri.getPrimaryUri(), usePathStyleUris);
}
catch (final URISyntaxException e) {
throw Utility.generateNewUnexpectedStorageException(e);
}
final HashMap queryParameters = PathUtility.parseQueryString(completeUri.getQuery());
final String[] snapshotIDs = queryParameters.get(Constants.QueryConstants.SHARE_SNAPSHOT);
if (snapshotIDs != null && snapshotIDs.length > 0) {
this.getShare().snapshotID = snapshotIDs[0];
}
}
/**
* Returns the URI after applying the authentication transformation.
*
* @return A java.net.URI object that represents the URI after applying the authentication
* transformation.
*
* @throws StorageException
* If a storage service error occurred.
* @throws URISyntaxException
* If the resource URI is invalid.
*/
private StorageUri getTransformedAddress() throws URISyntaxException, StorageException {
return this.fileServiceClient.getCredentials().transformUri(this.storageUri);
}
}