BlobServiceClient Class
- java.
lang. Object - com.
azure. storage. blob. BlobServiceClient
- com.
public final class BlobServiceClient
Client to a storage account. It may only be instantiated through a BlobServiceClientBuilder. This class does not hold any state about a particular storage account but is instead a convenient way of sending off appropriate requests to the resource on the service. It may also be used to construct URLs to blobs and containers.
This client contains operations on a blob. Operations on a container are available on BlobContainerClient through getBlobContainerClient(String containerName), and operations on a blob are available on BlobClient.
Please see here for more information on containers.
Method Summary
Methods inherited from java.lang.Object
Method Details
createBlobContainer
public BlobContainerClient createBlobContainer(String containerName)
Creates a new container within a storage account. If a container with the same name already exists, the operation fails. For more information, see the Azure Docs.
Code Samples
BlobContainerClient blobContainerClient = client.createBlobContainer("containerName");
Parameters:
Returns:
createBlobContainerIfNotExists
public BlobContainerClient createBlobContainerIfNotExists(String containerName)
Creates a new container within a storage account if it does not exist. For more information, see the Azure Docs.
Code Samples
BlobContainerClient blobContainerClient = client.createBlobContainerIfNotExists("containerName");
Parameters:
Returns:
createBlobContainerIfNotExistsWithResponse
public Response
Creates a new container within a storage account if it does not exist. For more information, see the Azure Docs.
Code Samples
Map<String, String> metadata = Collections.singletonMap("metadata", "value");
Context context = new Context("Key", "Value");
BlobContainerCreateOptions options = new BlobContainerCreateOptions().setMetadata(metadata)
.setPublicAccessType(PublicAccessType.CONTAINER);
Response<BlobContainerClient> response = client.createBlobContainerIfNotExistsWithResponse("containerName",
options, context);
if (response.getStatusCode() == 409) {
System.out.println("Already existed.");
} else {
System.out.printf("Create completed with status %d%n", response.getStatusCode());
}
Parameters:
Returns:
createBlobContainerWithResponse
public Response
Creates a new container within a storage account. If a container with the same name already exists, the operation fails. For more information, see the Azure Docs.
Code Samples
Map<String, String> metadata = Collections.singletonMap("metadata", "value");
Context context = new Context("Key", "Value");
BlobContainerClient blobContainerClient = client.createBlobContainerWithResponse(
"containerName",
metadata,
PublicAccessType.CONTAINER,
context).getValue();
Parameters:
Returns:
deleteBlobContainer
public void deleteBlobContainer(String containerName)
Deletes the specified container in the storage account. If the container doesn't exist the operation fails. For more information see the Azure Docs.
Code Samples
try {
client.deleteBlobContainer("container Name");
System.out.printf("Delete container completed with status %n");
} catch (UnsupportedOperationException error) {
System.out.printf("Delete container failed: %s%n", error);
}
Parameters:
deleteBlobContainerIfExists
public boolean deleteBlobContainerIfExists(String containerName)
Deletes the specified container in the storage account if it exists. For more information see the Azure Docs.
Code Samples
boolean result = client.deleteBlobContainerIfExists("container Name");
System.out.println("Delete container completed: " + result);
Parameters:
Returns:
true
if the container is successfully deleted, false
if the container does not exist.deleteBlobContainerIfExistsWithResponse
public Response
Deletes the specified container in the storage account if it exists. For more information see the Azure Docs.
Code Samples
Context context = new Context("Key", "Value");
Response<Boolean> response = client.deleteBlobContainerIfExistsWithResponse("containerName", context);
if (response.getStatusCode() == 404) {
System.out.println("Does not exist.");
} else {
System.out.printf("Delete completed with status %d%n", response.getStatusCode());
}
Parameters:
Returns:
deleteBlobContainerWithResponse
public Response
Deletes the specified container in the storage account. If the container doesn't exist the operation fails. For more information see the Azure Docs.
Parameters:
Returns:
findBlobsByTags
public PagedIterable
Returns a lazy loaded list of blobs in this account whose tags match the query expression. The returned PagedIterable<T> can be consumed while new items are automatically retrieved as needed. For more information, including information on the query syntax, see the Azure Docs.
Code Samples
Context context = new Context("Key", "Value");
client.findBlobsByTags(new FindBlobsOptions("where=tag=value").setMaxResultsPerPage(10), timeout, context)
.forEach(blob -> System.out.printf("Name: %s%n", blob.getName()));
Parameters:
Returns:
findBlobsByTags
public PagedIterable
Returns a lazy loaded list of blobs in this account whose tags match the query expression. The returned PagedIterable<T> can be consumed while new items are automatically retrieved as needed. For more information, including information on the query syntax, see the Azure Docs.
Code Samples
client.findBlobsByTags("where=tag=value").forEach(blob -> System.out.printf("Name: %s%n", blob.getName()));
Parameters:
Returns:
generateAccountSas
public String generateAccountSas(AccountSasSignatureValues accountSasSignatureValues)
Generates an account SAS for the Azure Storage account using the specified AccountSasSignatureValues.
Note : The client must be authenticated via StorageSharedKeyCredential
See AccountSasSignatureValues for more information on how to construct an account SAS.
Generating an account SAS
The snippet below generates an AccountSasSignatureValues object that lasts for two days and gives the user read and list access to blob and file shares.
AccountSasPermission permissions = new AccountSasPermission()
.setListPermission(true)
.setReadPermission(true);
AccountSasResourceType resourceTypes = new AccountSasResourceType().setContainer(true);
AccountSasService services = new AccountSasService().setBlobAccess(true).setFileAccess(true);
OffsetDateTime expiryTime = OffsetDateTime.now().plus(Duration.ofDays(2));
AccountSasSignatureValues sasValues =
new AccountSasSignatureValues(expiryTime, permissions, services, resourceTypes);
// Client must be authenticated via StorageSharedKeyCredential
String sas = client.generateAccountSas(sasValues);
Parameters:
Returns:
String
representing the SAS query parameters.generateAccountSas
public String generateAccountSas(AccountSasSignatureValues accountSasSignatureValues, Context context)
Generates an account SAS for the Azure Storage account using the specified AccountSasSignatureValues.
Note : The client must be authenticated via StorageSharedKeyCredential
See AccountSasSignatureValues for more information on how to construct an account SAS.
Generating an account SAS
The snippet below generates an AccountSasSignatureValues object that lasts for two days and gives the user read and list access to blob and file shares.
AccountSasPermission permissions = new AccountSasPermission()
.setListPermission(true)
.setReadPermission(true);
AccountSasResourceType resourceTypes = new AccountSasResourceType().setContainer(true);
AccountSasService services = new AccountSasService().setBlobAccess(true).setFileAccess(true);
OffsetDateTime expiryTime = OffsetDateTime.now().plus(Duration.ofDays(2));
AccountSasSignatureValues sasValues =
new AccountSasSignatureValues(expiryTime, permissions, services, resourceTypes);
// Client must be authenticated via StorageSharedKeyCredential
String sas = client.generateAccountSas(sasValues, new Context("key", "value"));
Parameters:
Returns:
String
representing the SAS query parameters.generateAccountSas
public String generateAccountSas(AccountSasSignatureValues accountSasSignatureValues, Consumer
Generates an account SAS for the Azure Storage account using the specified AccountSasSignatureValues.
Note : The client must be authenticated via StorageSharedKeyCredential
See AccountSasSignatureValues for more information on how to construct an account SAS.
Parameters:
Returns:
String
representing the SAS query parameters.getAccountInfo
public StorageAccountInfo getAccountInfo()
Returns the sku name and account kind for the account. For more information, please see the Azure Docs.
Code Samples
StorageAccountInfo accountInfo = client.getAccountInfo();
System.out.printf("Account kind: %s, SKU: %s%n", accountInfo.getAccountKind(), accountInfo.getSkuName());
Returns:
getAccountInfoWithResponse
public Response
Returns the sku name and account kind for the account. For more information, please see the Azure Docs.
Parameters:
Returns:
getAccountName
public String getAccountName()
Get associated account name.
Returns:
getAccountUrl
public String getAccountUrl()
Gets the URL of the storage account represented by this client.
Returns:
getBlobContainerClient
public BlobContainerClient getBlobContainerClient(String containerName)
Initializes a BlobContainerClient object pointing to the specified container. This method does not create a container. It simply constructs the URL to the container and offers access to methods relevant to containers.
Code Samples
BlobContainerClient blobContainerClient = client.getBlobContainerClient("containerName");
Parameters:
Returns:
getHttpPipeline
public HttpPipeline getHttpPipeline()
Gets the HttpPipeline powering this client.
Returns:
getProperties
public BlobServiceProperties getProperties()
Gets the properties of a storage account\u2019s Blob service. For more information, see the Azure Docs.
Code Samples
BlobServiceProperties properties = client.getProperties();
System.out.printf("Hour metrics enabled: %b, Minute metrics enabled: %b%n",
properties.getHourMetrics().isEnabled(),
properties.getMinuteMetrics().isEnabled());
Returns:
getPropertiesWithResponse
public Response
Gets the properties of a storage account\u2019s Blob service. For more information, see the Azure Docs.
Code Samples
Context context = new Context("Key", "Value");
BlobServiceProperties properties = client.getPropertiesWithResponse(timeout, context).getValue();
System.out.printf("Hour metrics enabled: %b, Minute metrics enabled: %b%n",
properties.getHourMetrics().isEnabled(),
properties.getMinuteMetrics().isEnabled());
Parameters:
Returns:
getServiceVersion
public BlobServiceVersion getServiceVersion()
Gets the service version the client is using.
Returns:
getStatistics
public BlobServiceStatistics getStatistics()
Retrieves statistics related to replication for the Blob service. It is only available on the secondary location endpoint when read-access geo-redundant replication is enabled for the storage account. For more information, see the Azure Docs.
Code Samples
System.out.printf("Geo-replication status: %s%n",
client.getStatistics().getGeoReplication().getStatus());
Returns:
getStatisticsWithResponse
public Response
Retrieves statistics related to replication for the Blob service. It is only available on the secondary location endpoint when read-access geo-redundant replication is enabled for the storage account. For more information, see the Azure Docs.
Code Samples
System.out.printf("Geo-replication status: %s%n",
client.getStatisticsWithResponse(timeout, context).getValue().getGeoReplication().getStatus());
Parameters:
Returns:
getUserDelegationKey
public UserDelegationKey getUserDelegationKey(OffsetDateTime start, OffsetDateTime expiry)
Gets a user delegation key for use with this account's blob storage. Note: This method call is only valid when using TokenCredential in this object's HttpPipeline.
Code Samples
System.out.printf("User delegation key: %s%n",
client.getUserDelegationKey(delegationKeyStartTime, delegationKeyExpiryTime));
Parameters:
Returns:
getUserDelegationKeyWithResponse
public Response
Gets a user delegation key for use with this account's blob storage. Note: This method call is only valid when using TokenCredential in this object's HttpPipeline.
Code Samples
System.out.printf("User delegation key: %s%n",
client.getUserDelegationKeyWithResponse(delegationKeyStartTime, delegationKeyExpiryTime, timeout, context));
Parameters:
Returns:
listBlobContainers
public PagedIterable
Returns a lazy loaded list of containers in this account. The returned PagedIterable<T> can be consumed while new items are automatically retrieved as needed. For more information, see the Azure Docs.
Code Samples
client.listBlobContainers().forEach(container -> System.out.printf("Name: %s%n", container.getName()));
Returns:
listBlobContainers
public PagedIterable
Returns a lazy loaded list of containers in this account. The returned PagedIterable<T> can be consumed while new items are automatically retrieved as needed. For more information, see the Azure Docs.
Code Samples
ListBlobContainersOptions options = new ListBlobContainersOptions()
.setPrefix("containerNamePrefixToMatch")
.setDetails(new BlobContainerListDetails().setRetrieveMetadata(true));
client.listBlobContainers(options, timeout).forEach(container -> System.out.printf("Name: %s%n", container.getName()));
Parameters:
Returns:
setProperties
public void setProperties(BlobServiceProperties properties)
Sets properties for a storage account's Blob service endpoint. For more information, see the Azure Docs. Note that setting the default service version has no effect when using this client because this client explicitly sets the version header on each request, overriding the default.
This method checks to ensure the properties being sent follow the specifications indicated in the Azure Docs. If CORS policies are set, CORS parameters that are not set default to the empty string.
Code Samples
BlobRetentionPolicy loggingRetentionPolicy = new BlobRetentionPolicy().setEnabled(true).setDays(3);
BlobRetentionPolicy metricsRetentionPolicy = new BlobRetentionPolicy().setEnabled(true).setDays(1);
BlobServiceProperties properties = new BlobServiceProperties()
.setLogging(new BlobAnalyticsLogging()
.setWrite(true)
.setDelete(true)
.setVersion("1.0")
.setRetentionPolicy(loggingRetentionPolicy))
.setHourMetrics(new BlobMetrics()
.setEnabled(true)
.setVersion("1.0")
.setIncludeApis(true)
.setRetentionPolicy(metricsRetentionPolicy))
.setMinuteMetrics(new BlobMetrics()
.setEnabled(true)
.setVersion("1.0")
.setIncludeApis(true)
.setRetentionPolicy(metricsRetentionPolicy));
try {
client.setProperties(properties);
System.out.printf("Setting properties completed%n");
} catch (UnsupportedOperationException error) {
System.out.printf("Setting properties failed: %s%n", error);
}
Parameters:
setPropertiesWithResponse
public Response
Sets properties for a storage account's Blob service endpoint. For more information, see the Azure Docs. Note that setting the default service version has no effect when using this client because this client explicitly sets the version header on each request, overriding the default.
This method checks to ensure the properties being sent follow the specifications indicated in the Azure Docs. If CORS policies are set, CORS parameters that are not set default to the empty string.
Code Samples
BlobRetentionPolicy loggingRetentionPolicy = new BlobRetentionPolicy().setEnabled(true).setDays(3);
BlobRetentionPolicy metricsRetentionPolicy = new BlobRetentionPolicy().setEnabled(true).setDays(1);
BlobServiceProperties properties = new BlobServiceProperties()
.setLogging(new BlobAnalyticsLogging()
.setWrite(true)
.setDelete(true)
.setVersion("1.0")
.setRetentionPolicy(loggingRetentionPolicy))
.setHourMetrics(new BlobMetrics()
.setEnabled(true)
.setVersion("1.0")
.setIncludeApis(true)
.setRetentionPolicy(metricsRetentionPolicy))
.setMinuteMetrics(new BlobMetrics()
.setEnabled(true)
.setVersion("1.0")
.setIncludeApis(true)
.setRetentionPolicy(metricsRetentionPolicy));
Context context = new Context("Key", "Value");
System.out.printf("Setting properties completed with status %d%n",
client.setPropertiesWithResponse(properties, timeout, context).getStatusCode());
Parameters:
Returns:
undeleteBlobContainer
public BlobContainerClient undeleteBlobContainer(String deletedContainerName, String deletedContainerVersion)
Restores a previously deleted container. If the container associated with provided deletedContainerName
already exists, this call will result in a 409 (conflict). This API is only functional if Container Soft Delete is enabled for the storage account associated with the container.
Code Samples
ListBlobContainersOptions listBlobContainersOptions = new ListBlobContainersOptions();
listBlobContainersOptions.getDetails().setRetrieveDeleted(true);
client.listBlobContainers(listBlobContainersOptions, null).forEach(
deletedContainer -> {
BlobContainerClient blobContainerClient = client.undeleteBlobContainer(
deletedContainer.getName(), deletedContainer.getVersion());
}
);
Parameters:
Returns:
undeleteBlobContainerWithResponse
public Response
Restores a previously deleted container. The restored container will be renamed to the destinationContainerName
if provided in options
. Otherwise deletedContainerName
is used as destination container name. If the container associated with provided destinationContainerName
already exists, this call will result in a 409 (conflict). This API is only functional if Container Soft Delete is enabled for the storage account associated with the container.
Code Samples
ListBlobContainersOptions listBlobContainersOptions = new ListBlobContainersOptions();
listBlobContainersOptions.getDetails().setRetrieveDeleted(true);
client.listBlobContainers(listBlobContainersOptions, null).forEach(
deletedContainer -> {
BlobContainerClient blobContainerClient = client.undeleteBlobContainerWithResponse(
new UndeleteBlobContainerOptions(deletedContainer.getName(), deletedContainer.getVersion()),
timeout, context).getValue();
}
);
Parameters:
Returns:
Applies to
Azure SDK for Java