/**
* 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.queue;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import com.microsoft.azure.storage.Constants;
import com.microsoft.azure.storage.OperationContext;
import com.microsoft.azure.storage.StorageException;
import com.microsoft.azure.storage.core.BaseRequest;
import com.microsoft.azure.storage.core.ListingContext;
import com.microsoft.azure.storage.core.UriQueryBuilder;
/**
* RESERVED FOR INTERNAL USE. Provides a set of methods for constructing web
* requests for queue operations.
*/
final class QueueRequest {
private static final String METADATA = "metadata";
private static final String POP_RECEIPT = "popreceipt";
private static final String PEEK_ONLY = "peekonly";
private static final String NUMBER_OF_MESSAGES = "numofmessages";
private static final String VISIBILITY_TIMEOUT = "visibilitytimeout";
private static final String MESSAGE_TTL = "messagettl";
/**
* Adds user-defined metadata to the web request as one or more name-value
* pairs.
*
* @param request
* The <code>HttpURLConnection</code> web request to add the
* metadata to.
* @param metadata
* A <code>HashMap</code> containing the user-defined metadata to
* add.
* @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.
*/
public static void addMetadata(final HttpURLConnection request, final HashMap<String, String> metadata,
final OperationContext opContext) {
BaseRequest.addMetadata(request, metadata, opContext);
}
/**
* Constructs a web request to clear all the messages in the queue. Sign the
* web request with a length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection clearMessages(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws URISyntaxException, IOException, StorageException {
return BaseRequest.delete(uri, queueOptions, null, opContext);
}
/**
* Constructs a web request to create a new queue. Sign the web request with
* a length of 0.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection create(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws IOException, URISyntaxException, StorageException {
return BaseRequest.create(uri, queueOptions, null, opContext);
}
/**
* Constructs a web request to delete the queue. Sign the web request with a
* length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection delete(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws IOException, URISyntaxException, StorageException {
return BaseRequest.delete(uri, queueOptions, null, opContext);
}
/**
* Constructs a web request to delete a message from the queue. Sign the web
* request with a length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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.
* @param popReceipt
* A <code>String</code> that contains the pop receipt value
* returned from an earlier call to {@link CloudQueueMessage#getPopReceipt} for the message to
* delete.
* @return An <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws URISyntaxException
* If the URI is not valid.
* @throws IOException
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection deleteMessage(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext, final String popReceipt) throws URISyntaxException, IOException,
StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
builder.add(POP_RECEIPT, popReceipt);
final HttpURLConnection request = BaseRequest.delete(uri, queueOptions, builder, opContext);
return request;
}
/**
* Constructs a web request to download user-defined metadata and the
* approximate message count for the queue. Sign the web request with a
* length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection downloadAttributes(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws IOException, URISyntaxException, StorageException {
UriQueryBuilder builder = new UriQueryBuilder();
builder.add(Constants.QueryConstants.COMPONENT, METADATA);
final HttpURLConnection retConnection = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
retConnection.setRequestMethod(Constants.HTTP_HEAD);
return retConnection;
}
/**
* Constructs a web request to return a listing of all queues in this
* storage account. Sign the web request with a length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the storage account.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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.
* @param listingContext
* A {@link ListingContext} object that specifies parameters for
* the listing operation, if any. May be <code>null</code>.
* @param detailsIncluded
* A {@link QueueListingDetails} object that specifies additional
* details to return with the listing, if any. May be <code>null</code>.
* @return An <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection list(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext, final ListingContext listingContext,
final QueueListingDetails detailsIncluded) throws URISyntaxException, IOException, StorageException {
final UriQueryBuilder builder = BaseRequest.getListUriQueryBuilder(listingContext);
if (detailsIncluded == QueueListingDetails.ALL || detailsIncluded == QueueListingDetails.METADATA) {
builder.add(Constants.QueryConstants.INCLUDE, Constants.QueryConstants.METADATA);
}
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setRequestMethod(Constants.HTTP_GET);
return request;
}
/**
* Constructs a web request to retrieve a specified number of messages from
* the front of the queue without changing their visibility. Sign the web
* request with a length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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.
* @param numberOfMessages
* A nonzero value that specifies the number of messages to
* retrieve from the queue, up to a maximum of 32.
* @return An <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection peekMessages(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext, final int numberOfMessages) throws URISyntaxException, IOException,
StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
builder.add(PEEK_ONLY, "true");
if (numberOfMessages != 0) {
builder.add(NUMBER_OF_MESSAGES, Integer.toString(numberOfMessages));
}
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setRequestMethod(Constants.HTTP_GET);
return request;
}
/**
* Constructs a web request to add a message to the back of the queue. Write the encoded message request body
* generated with a call to QueueMessageSerializer#generateMessageRequestBody(String)} to the output
* stream of the request. Sign the web request with the length of the encoded message request body.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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.
* @param visibilityTimeoutInSeconds
* Specifies the length of time for the message to be invisible
* in seconds, starting when it is added to the queue. A value of
* 0 will make the message visible immediately. The value must be
* greater than or equal to 0, and cannot be larger than 7 days.
* The visibility timeout of a message cannot be set to a value
* greater than the time-to-live time.
* @param timeToLiveInSeconds
* Specifies the time-to-live interval for the message, in
* seconds. The maximum time-to-live allowed is 7 days. If this
* parameter is 0, the default time-to-live of 7 days is used.
* @return An <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection putMessage(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext, final int visibilityTimeoutInSeconds, final int timeToLiveInSeconds)
throws IOException, URISyntaxException, StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
if (visibilityTimeoutInSeconds != 0) {
builder.add(VISIBILITY_TIMEOUT, Integer.toString(visibilityTimeoutInSeconds));
}
if (timeToLiveInSeconds != 0) {
builder.add(MESSAGE_TTL, Integer.toString(timeToLiveInSeconds));
}
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setDoOutput(true);
request.setRequestMethod(Constants.HTTP_POST);
return request;
}
/**
* Constructs a web request to retrieve messages from the front of the
* queue. Sign the web request with a length of -1L.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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.
* @param numberOfMessages
* A nonzero value that specifies the number of messages to
* retrieve from the queue, up to a maximum of 32.
* @param visibilityTimeoutInSeconds
* Specifies the visibility timeout value in seconds, relative to
* server time, to make the retrieved messages invisible until
* the visibility timeout expires. The value must be larger than
* or equal to 0, and cannot be larger than 7 days. The
* visibility timeout of a message can be set to a value later
* than the expiry time, which will prevent the message from
* being retrieved again whether it is processed or not.
* @return An <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection retrieveMessages(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext, final int numberOfMessages, final int visibilityTimeoutInSeconds)
throws URISyntaxException, IOException, StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
if (numberOfMessages != 0) {
builder.add(NUMBER_OF_MESSAGES, Integer.toString(numberOfMessages));
}
builder.add(VISIBILITY_TIMEOUT, Integer.toString(visibilityTimeoutInSeconds));
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setRequestMethod("GET");
return request;
}
/**
* Constructs a web request to set user-defined metadata for the queue. Each
* call to this operation replaces all existing metadata attached to the
* queue. Use the {@link #addMetadata} method to specify the metadata to set
* on the queue. To remove all metadata from the queue, call this web
* request with no metadata added. Sign the web request with a length of 0.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection setMetadata(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws IOException, URISyntaxException, StorageException {
return BaseRequest.setMetadata(uri, queueOptions, null, opContext);
}
/**
* Constructs a web request to update the visibility timeout of a message in
* the queue. Optionally updates the message content if a message request
* body is written to the output stream of the web request. The web request
* should be signed with the length of the encoded message request body if
* one is included, or a length of 0 if no message request body is included.
*
* @param uri
* A <code>URI</code> object that specifies the absolute URI to
* the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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.
* @param popReceipt
* A <code>String</code> that contains the pop receipt value
* returned from an earlier call to {@link CloudQueueMessage#getPopReceipt} for the message to
* update.
* @param visibilityTimeoutInSeconds
* Specifies the new visibility timeout value in seconds,
* relative to server time, to make the retrieved messages
* invisible until the visibility timeout expires. The value must
* be larger than or equal to 0, and cannot be larger than 7
* days. The visibility timeout of a message can be set to a
* value later than the expiry time, which will prevent the
* message from being retrieved again whether it is processed or
* not.
* @return An <code>HttpURLConnection</code> configured for the specified
* operation.
*
* @throws IOException
* @throws URISyntaxException
* If the URI is not valid.
* @throws StorageException
* If a storage service error occurred during the operation.
*/
public static HttpURLConnection updateMessage(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext, final String popReceipt, final int visibilityTimeoutInSeconds)
throws URISyntaxException, IOException, StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
builder.add(POP_RECEIPT, popReceipt);
builder.add(VISIBILITY_TIMEOUT, Integer.toString(visibilityTimeoutInSeconds));
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setDoOutput(true);
request.setRequestMethod(Constants.HTTP_PUT);
return request;
}
/**
* Sets the ACL for the queue. Sign with length of aclBytes.
*
* @param uri
* The absolute URI to the queue.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 HttpURLConnection configured for the operation.
* @throws StorageException
* */
public static HttpURLConnection setAcl(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws IOException, URISyntaxException, StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
builder.add(Constants.QueryConstants.COMPONENT, Constants.QueryConstants.ACL);
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setDoOutput(true);
request.setRequestMethod(Constants.HTTP_PUT);
return request;
}
/**
* Constructs a web request to return the ACL for this queue. Sign with no length specified.
*
* @param uri
* The absolute URI to the container.
* @param queueOptions
* A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
* settings for the operation. Specify <code>null</code> to use the request options specified on the
* {@link CloudQueueClient}.
* @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 HttpURLConnection configured for the operation.
* @throws StorageException
*/
public static HttpURLConnection getAcl(final URI uri, final QueueRequestOptions queueOptions,
final OperationContext opContext) throws IOException, URISyntaxException, StorageException {
final UriQueryBuilder builder = new UriQueryBuilder();
builder.add(Constants.QueryConstants.COMPONENT, Constants.QueryConstants.ACL);
final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
request.setRequestMethod(Constants.HTTP_GET);
return request;
}
/**
* Private Default Ctor.
*/
private QueueRequest() {
// No op
}
}
