public WindowsAzureStorageHelper()
{
ContainerName = CONTAINER_NAME;
// Open blob storage.
StorageAccountInfo = StorageAccountInfo.GetDefaultBlobStorageAccountFromConfiguration();
BlobStorageType = BlobStorage.Create(StorageAccountInfo);
BlobStorageType.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
// Open queue storage.
StorageAccountInfo queueAccount = StorageAccountInfo.GetDefaultQueueStorageAccountFromConfiguration();
QueueStorageType = QueueStorage.Create(queueAccount);
QueueStorageType = QueueStorage.Create(queueAccount);
QueueStorageType.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
// Open table storage.
StorageAccountInfo tableAccount = StorageAccountInfo.GetDefaultTableStorageAccountFromConfiguration();
TableStorageType = TableStorage.Create(tableAccount);
TableStorageType = TableStorage.Create(tableAccount);
TableStorageType.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
}
public WindowsAzureStorageHelper(string accountName, string accountKey, bool isLocal, string blobEndpointURI, string queueEndpointURI, string tableEndpointURI)
{
ContainerName = CONTAINER_NAME;
StorageAccountInfo = new StorageAccountInfo(new Uri(blobEndpointURI), isLocal, accountName, accountKey);
BlobStorageType = BlobStorage.Create(StorageAccountInfo);
BlobStorageType.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
Container = BlobStorageType.GetBlobContainer(ContainerName);
//Create the container if it does not exist.
Container.CreateContainer(ContainerMetaData, ContainerAccessControl.Private);
// Open queue storage.
//StorageAccountInfo qaccount = StorageAccountInfo.GetDefaultQueueStorageAccountFromConfiguration();
StorageAccountInfo qaccount = new StorageAccountInfo(new Uri(queueEndpointURI), isLocal, accountName, accountKey);
QueueStorageType = QueueStorage.Create(qaccount);
QueueStorageType = QueueStorage.Create(qaccount);
QueueStorageType.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
// Open table storage.
//StorageAccountInfo taccount = StorageAccountInfo.GetDefaultTableStorageAccountFromConfiguration();
StorageAccountInfo taccount = new StorageAccountInfo(new Uri(tableEndpointURI), isLocal, accountName, accountKey);
TableStorageType = TableStorage.Create(taccount);
TableStorageType = TableStorage.Create(taccount);
TableStorageType.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
}
internal static void RunSamples()
{
StorageAccountInfo account = StorageAccountInfo.GetDefaultBlobStorageAccountFromConfiguration();
string containerName = StorageAccountInfo.GetConfigurationSetting("ContainerName", null, true);
NameValueCollection containerMetadata = new NameValueCollection();
containerMetadata.Add("Name", "StorageSample");
BlobStorage blobStorage = BlobStorage.Create(account);
blobStorage.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
try
{
BlobContainer container = blobStorage.GetBlobContainer(containerName);
//Create the container if it does not exist.
container.CreateContainer(containerMetadata, ContainerAccessControl.Private);
ContainerProperties containerProperties = container.GetContainerProperties();
Console.WriteLine("Container {0} LastModified {1} ETag {2} Metadata {3}",
containerProperties.Name,
containerProperties.LastModifiedTime,
containerProperties.ETag,
StringBlob.MetadataToString(containerProperties.Metadata)
);
ContainerAccessControl acl = container.GetContainerAccessControl();
Console.WriteLine("Container has access control {0}", acl);
// write some text blobs
NameValueCollection nv1 = new NameValueCollection();
nv1["m1"] = "v1";
nv1["m2"] = "v2";
StringBlob hello1 = new StringBlob("hello.txt", "Hello World");
hello1.Blob.Metadata = nv1;
Console.WriteLine("Creating blob hello.txt");
PutTextBlob(container, hello1);
BlobProperties prop = container.GetBlobProperties("hello.txt");
Console.WriteLine("hello.txt content length = " + prop.ContentLength);
StringBlob goodbye1 = new StringBlob("goodbye.txt", "Goodbye world");
Console.WriteLine("Creating blob goodbye.txt");
PutTextBlob(container, goodbye1);
// read back the blobs
Console.WriteLine("Getting hello.txt and goodbye.txt");
StringBlob hello2 = GetTextBlob(container, "hello.txt");
Console.WriteLine("hello.txt: " + hello2.ToString());
StringBlob goodbye2 = GetTextBlob(container, "goodbye.txt");
Console.WriteLine("goodbye.txt " + goodbye2.ToString());
//Try to get a blob that does not exist
try
{
GetTextBlob(container, "noSuchBlob");
}
catch (StorageClientException sce)
{
//The extended error information when present provides more specific and detailed information
// about the cause of the error.
Console.WriteLine(
"Error attempting to get blob 'noSuchBlob' Error Code = {0} Message = {1}",
sce.ExtendedErrorInformation != null ?
sce.ExtendedErrorInformation.ErrorCode : sce.ErrorCode.ToString(),
sce.Message
);
}
//update metadata of hello.txt
hello2.Blob.Metadata["m3"] = "v3";
Console.WriteLine("Updating metadata of hello.txt");
container.UpdateBlobMetadata(hello2.Blob);
hello2.Blob.Metadata["m4"] = "v4";
container.UpdateBlobMetadataIfNotModified(hello2.Blob);
//Refresh hello.txt. It has changed.
bool refreshed = RefreshTextBlob(container, hello1);
if (refreshed)
{
Console.WriteLine("hello.txt refreshed " + hello1.ToString());
}
else
{
Console.WriteLine("hello.txt not refreshed");
}
Console.WriteLine("Uploading a large blob");
PutLargeString(
container,
new StringBlob("LargeBlob.txt", "Let us repeat this string a large number of times "),
50000
);
Console.WriteLine("Downloading large blob to file LargeBlob.txt");
DownloadToFile(container, "LargeBlob.txt", "LargeBlob.txt");
//Refresh hello.txt. It hasn't changed.
refreshed = RefreshTextBlob(container, hello2);
if (refreshed)
{
Console.WriteLine("hello.txt refreshed " + hello2.ToString());
}
else
{
Console.WriteLine("hello.txt not refreshed");
}
//Change goodbye.txt and refresh it
StringBlob goodbye3 = new StringBlob("goodbye.txt", "Goodbye again world");
PutTextBlob(container, goodbye3);
//Now refresh the other reference to goodbye.txt (goodbye2)
refreshed = RefreshTextBlob(container, goodbye2);
if (refreshed)
{
Console.WriteLine("goodbye.txt refreshed " + goodbye2.ToString());
}
else
{
Console.WriteLine("goodbye.txt not refreshed");
}
//Update hello.txt
hello2.Value = "Hello again world";
bool updated = UpdateTextBlob(container, hello2);
if (updated)
{
Console.WriteLine("hello.txt updated " + hello2.ToString());
}
else
{
Console.WriteLine("hello.txt not updated because it has been changed");
}
//Try to update goodbye.txt through goodbye1.
//This should fail because it has been updated thru goodbye3
goodbye1.Value = "Farewell world";
updated = UpdateTextBlob(container, goodbye1);
if (updated)
{
Console.WriteLine("goodbye.txt updated " + goodbye1.ToString());
}
else
{
Console.WriteLine("goodbye.txt not updated because it has been changed");
}
Console.WriteLine("Creating blob 'deleteme.txt'");
PutTextBlob(container, new StringBlob("deleteme.txt", "deleteme"));
Console.WriteLine("Creating blobs f/a.txt and f/b.txt");
PutTextBlob(container, new StringBlob("f/a.txt", "This is a.txt"));
PutTextBlob(container, new StringBlob("f/b.txt", "This is b.txt"));
Console.WriteLine("Enumerating all blobs");
// enumerate all the blobs
foreach (object b1 in container.ListBlobs("", false))
{
Console.WriteLine("{0}", ((BlobProperties)b1).Uri);
}
Console.WriteLine("Enumerating all blobs with combining common prefixes");
foreach (object b2 in container.ListBlobs("", true))
{
BlobProperties blobProperties = b2 as BlobProperties;
if (blobProperties != null)
{
Console.WriteLine("{0}", blobProperties.Uri);
}
else
{
Console.WriteLine("Common prefix: {0}", (string)b2);
}
}
Console.WriteLine("Deleting blob 'deleteme.txt'");
container.DeleteBlob("deleteme.txt");
Console.WriteLine("Enumerate the blobs again");
foreach (object b3 in container.ListBlobs("", false))
{
Console.WriteLine("{0}", ((BlobProperties)b3).Uri);
}
// Create another container
Console.WriteLine("Creating container 'deleteme'");
BlobContainer container2 = blobStorage.GetBlobContainer("deleteme");
container2.CreateContainer();
// enumerate containers
foreach (BlobContainer c in blobStorage.ListBlobContainers())
{
Console.WriteLine("Container: {0}", c.ContainerUri);
}
// Delete the container
Console.WriteLine("Deleting container 'deleteme'");
container2.DeleteContainer();
// enumerate containers
foreach (BlobContainer c in blobStorage.ListBlobContainers())
{
Console.WriteLine("Container: {0}", c.ContainerUri);
}
}
catch (System.Net.WebException we)
{
Console.WriteLine("Network error: " + we.Message);
if (we.Status == System.Net.WebExceptionStatus.ConnectFailure)
{
Console.WriteLine("Please check if the blob storage service is running at " + account.BaseUri.ToString());
Console.WriteLine("Detailed information on how to run the development storage tool " +
"locally can be found in the readme file that comes with this sample.");
}
}
catch (StorageException se)
{
Console.WriteLine("Storage service error: " + se.Message);
}
}
internal static void RunSamples()
{
StorageAccountInfo account = null;
try
{
string sampleGuid = (Guid.NewGuid()).ToString("N");
string name = "queue" + sampleGuid;
string name2 = "queue2" + sampleGuid;
string prefix = "prefix" + sampleGuid;
bool exists = false;
bool res = false;
Console.WriteLine("Create queue " + name);
account = StorageAccountInfo.GetDefaultQueueStorageAccountFromConfiguration();
QueueStorage queueService = QueueStorage.Create(account);
queueService.RetryPolicy = RetryPolicies.RetryN(2, TimeSpan.FromMilliseconds(100));
MessageQueue q = queueService.GetQueue(name);
res = q.CreateQueue(out exists);
if (!exists && res)
{
Console.WriteLine("Queue " + name + " successfully created.");
}
Console.WriteLine("Get all the queues in an account.");
IEnumerable <MessageQueue> queues = queueService.ListQueues();
foreach (MessageQueue qu in queues)
{
Console.WriteLine(qu.Name);
}
Console.WriteLine("Create a number of queues and show continuation listing. This can take a while...");
int numListSample = 60;
for (int j = 0; j < numListSample; j++)
{
q = queueService.GetQueue(prefix + (Guid.NewGuid()).ToString("N").Substring(0, 10));
q.CreateQueue();
}
queues = queueService.ListQueues();
List <MessageQueue> l = new List <MessageQueue>(queues);
Console.WriteLine("The following queues are available:");
foreach (MessageQueue qu in l)
{
Console.WriteLine(qu.Name);
}
Console.WriteLine("Find all queues with a given prefix...");
queues = queueService.ListQueues(prefix);
l = new List <MessageQueue>(queues);
Console.WriteLine("Queues with the prefix " + prefix);
foreach (MessageQueue qu in l)
{
Console.WriteLine(qu.Name);
}
Console.WriteLine("Delete all queues with the prefix " + prefix);
foreach (MessageQueue qu in queues)
{
Console.WriteLine("Delete queue" + qu.Name);
qu.Clear();
qu.DeleteQueue();
}
q = queueService.GetQueue(name);
if (!q.DoesQueueExist())
{
Console.WriteLine("Queue '{0}' does not exist");
}
Console.WriteLine("Delete queue " + name);
q.Clear();
q.DeleteQueue();
Console.WriteLine("Get queue properties.");
q = queueService.GetQueue(name2);
res = q.CreateQueue(out exists);
if (!exists && res)
{
Console.WriteLine("Queue " + name + " successfully created.");
}
QueueProperties props = new QueueProperties();
props = q.GetProperties();
props.Metadata = new NameValueCollection();
props.Metadata.Add("meta-sample1", "sample1");
props.Metadata.Add("meta-sample2", "sample2");
q.SetProperties(props);
props = null;
props = q.GetProperties();
Console.WriteLine("Queue properties: " + props.Metadata["meta-sample1"] + " " + props.Metadata["meta-sample2"]);
Console.WriteLine("Put message into the queue.");
if (q.PutMessage(new Message("<sample>sample message</sample>")))
{
Console.WriteLine("Message successfully put into queue.");
}
Console.WriteLine("Get message from the queue.");
Message msg = q.GetMessage();
Console.WriteLine(msg.ContentAsString());
Console.WriteLine("Clear all messages from a queue.");
for (int i = 0; i < 10; i++)
{
q.PutMessage(new Message("<sample>" + i + "</sample>"));
}
q.Clear();
Console.WriteLine("Delete a single message.");
for (int i = 0; i < 10; i++)
{
q.PutMessage(new Message("<sample>" + i + "</sample>"));
}
Message msg1 = q.GetMessage();
q.DeleteMessage(msg1);
q.Clear();
Console.WriteLine("Automatic reception of messages.");
q.MessageReceived += MessageReceived;
q.PollInterval = 500;
q.StartReceiving();
for (int i = 0; i < 10; i++)
{
q.PutMessage(new Message("<samplemessage>" + i + "</samplemessage>"));
System.Threading.Thread.Sleep(1000);
}
q.StopReceiving();
q.Clear();
q.DeleteQueue();
Console.WriteLine("Queue samples finished successfully.");
}
catch (System.Net.WebException we)
{
Console.WriteLine("Network error: " + we.Message);
if (we.Status == System.Net.WebExceptionStatus.ConnectFailure)
{
Console.WriteLine("Please check if the queue storage service is running at " + account.BaseUri.ToString());
Console.WriteLine("Detailed information on how to run the development storage tool " +
"locally can be found in the readme file that comes with this sample.");
}
}
catch (StorageException se)
{
Console.WriteLine("Storage service error: " + se.Message);
}
}
// shows alternative ways of generating DataServiceContext objects
internal static void RunSamples2()
{
StorageAccountInfo account = null;
try
{
account = StorageAccountInfo.GetDefaultTableStorageAccountFromConfiguration();
TableStorage tableStorage = TableStorage.Create(account);
tableStorage.RetryPolicy = RetryPolicies.RetryN(3, TimeSpan.FromSeconds(1));
// the DataServiceContext object inherits its retry policy from tableStorage in this case
TableStorageDataServiceContext svc = tableStorage.GetDataServiceContext();
Console.WriteLine("Table creation, delete and list samples...");
string sampleTableName = SampleDataServiceContext.SampleTableName;
tableStorage.TryCreateTable(sampleTableName);
DeleteAllEntriesFromSampleTable(svc, sampleTableName);
Console.WriteLine("List all tables in the account.");
IEnumerable <string> tables2 = tableStorage.ListTables();
foreach (string n1 in tables2)
{
Console.WriteLine(n1);
}
Console.WriteLine("Inserting entities into the table...");
SampleEntity t = new SampleEntity("samplepartitionkey", "samplerowkey");
svc.AddObject(sampleTableName, t);
svc.SaveChangesWithRetries();
//Detach the existing entity so that we can demonstrate the server side
//error when you try to insert an same object with the same keys
svc.Detach(t);
// Insert an entity with the same keys
Console.WriteLine("Try to insert the same entity into the table and show how to deal with error conditions.");
t = new SampleEntity("samplepartitionkey", "samplerowkey");
svc.AddObject(sampleTableName, t);
try
{
svc.SaveChangesWithRetries();
// getting here is an error because inserting the same row twice raises an exception
Console.WriteLine("Should not get here. Succeeded inserting two entities with the same keys");
}
catch (Exception e)
{
HttpStatusCode status;
StorageExtendedErrorInformation errorInfo;
if (TableStorageHelpers.EvaluateException(e, out status, out errorInfo) &&
status == HttpStatusCode.Conflict)
{
// the row has already been inserted before, this is expected here
if (errorInfo != null)
{
Console.WriteLine("Attempting to insert row with same keys resulted in error {0} : {1}",
errorInfo.ErrorCode, errorInfo.ErrorMessage);
}
}
else
{
throw;
}
}
svc.Detach(t);
Console.WriteLine("Insert a large item into the table.");
t = new SampleEntity("samplepartitionkey", "samplerowkey1");
t.B = new String('a', 1000);
svc.AddObject(sampleTableName, t);
svc.SaveChangesWithRetries();
Console.WriteLine("Create a normal DataServiceContext object (not TableStorageDataServiceContext) and attach it to a TableStorage object.");
DataServiceContext svc2 = new DataServiceContext(
TableStorage.GetServiceBaseUri(account.BaseUri, account.UsePathStyleUris, account.AccountName));
tableStorage.Attach(svc2);
var qResult = from c in svc2.CreateQuery <SampleEntity>(sampleTableName)
where c.RowKey == "samplerowkey1"
select c;
foreach (SampleEntity cust in qResult)
{
if (cust.B != t.B)
{
Console.WriteLine("Sample failed. Did not read the entity property just written");
}
}
Console.WriteLine("Insert many rows in a table and show the API for dealing with query result pagination.");
int num = 2100;
Console.WriteLine("Inserting {0} rows.", num.ToString(CultureInfo.CurrentUICulture));
for (int i = 0; i < num; i++)
{
t = new SampleEntity("samplestring", i.ToString(CultureInfo.InvariantCulture));
svc.AddObject(sampleTableName, t);
svc.SaveChangesWithRetries();
if ((i + 1) % 50 == 0)
{
Console.WriteLine("Inserted row {0}.", (i + 1).ToString(CultureInfo.CurrentUICulture));
}
}
Console.WriteLine("Executing query that will return many results. This can take a while...");
var qResult2 = from c in svc.CreateQuery <SampleEntity>(sampleTableName)
where c.PartitionKey == "samplestring"
select c;
TableStorageDataServiceQuery <SampleEntity> tableStorageQuery = new TableStorageDataServiceQuery <SampleEntity>(qResult2 as DataServiceQuery <SampleEntity>);
IEnumerable <SampleEntity> res = tableStorageQuery.ExecuteAllWithRetries();
Console.WriteLine("Retrieved query results:");
foreach (SampleEntity entity in res)
{
Console.WriteLine("Partition key: {0}, row key: {1}.", entity.PartitionKey, entity.RowKey);
}
Console.WriteLine("Delete all entries in the sample table.");
DeleteAllEntriesFromSampleTable(tableStorage.GetDataServiceContext(), sampleTableName);
tableStorage.DeleteTable(sampleTableName);
Console.WriteLine("Table samples finished!");
}
catch (DataServiceRequestException dsre)
{
Console.WriteLine("DataServiceRequestException: " + GetExceptionMessage(dsre));
ShowTableStorageErrorMessage(account.BaseUri.ToString());
}
catch (InvalidOperationException ioe)
{
Console.WriteLine("Storage service error: " + GetExceptionMessage(ioe));
ShowTableStorageErrorMessage(account.BaseUri.ToString());
}
}
// this method shows an alternative way of accessing/creating DataServiceContext objects
// this approach is closer to what tools generate for normal ADO.NET Data Services projects
internal static void RunSamples1()
{
StorageAccountInfo account = null;
try
{
Console.WriteLine("Show how to create tables and queries using the SampleDataServiceContext class...");
account = StorageAccountInfo.GetDefaultTableStorageAccountFromConfiguration();
SampleDataServiceContext svc = new SampleDataServiceContext(account);
svc.RetryPolicy = RetryPolicies.RetryN(3, TimeSpan.FromSeconds(1));
// Create 'SampleTable'
// this uses the SampleDataServiceContext class
TableStorage.CreateTablesFromModel(typeof(SampleDataServiceContext), account);
string sampleTableName = SampleDataServiceContext.SampleTableName;
DeleteAllEntriesFromSampleTable(svc, sampleTableName);
svc.AddObject(SampleDataServiceContext.SampleTableName, new SampleEntity("sample", "entity"));
svc.SaveChangesWithRetries();
var qResult = from c in svc.SampleTable
where c.PartitionKey == "samplepartitionkey" && c.RowKey == "samplerowkey1"
select c;
TableStorageDataServiceQuery <SampleEntity> q = new TableStorageDataServiceQuery <SampleEntity>(qResult as DataServiceQuery <SampleEntity>, svc.RetryPolicy);
try {
// the query references the whole key and explicitly addresses one entity
// thus, this query can generate an exception if there are 0 results during enumeration
IEnumerable <SampleEntity> res = q.ExecuteAllWithRetries();
foreach (SampleEntity s in res)
{
Console.WriteLine("This code is not reached. " + s.PartitionKey);
}
} catch (DataServiceQueryException e) {
HttpStatusCode s;
if (TableStorageHelpers.EvaluateException(e, out s) && s == HttpStatusCode.NotFound)
{
// this would mean the entity was not found
Console.WriteLine("The entity was not found. This is expected here.");
}
}
Console.WriteLine("Delete all entries in the sample table.");
DeleteAllEntriesFromSampleTable(svc, sampleTableName);
Console.WriteLine("Table sample 1 finished!");
}
catch (DataServiceRequestException dsre)
{
Console.WriteLine("DataServiceRequestException: " + GetExceptionMessage(dsre));
ShowTableStorageErrorMessage(account.BaseUri.ToString());
}
catch (InvalidOperationException ioe)
{
Console.WriteLine("Storage service error: " + GetExceptionMessage(ioe));
ShowTableStorageErrorMessage(account.BaseUri.ToString());
}
}