private async Task <CloudStorageAccount> GetStorageCredential()
{
AzureServiceTokenProvider azureServiceTokenProvider = new AzureServiceTokenProvider((string)null, "https://login.microsoftonline.com/");
NewTokenAndFrequency tokenAndFrequency1 = await TokenRenewerAsync((object)azureServiceTokenProvider, CancellationToken.None);
NewTokenAndFrequency tokenAndFrequency2 = tokenAndFrequency1;
tokenAndFrequency1 = new NewTokenAndFrequency();
TokenCredential tokenCredential = new TokenCredential(tokenAndFrequency2.Token, new RenewTokenFuncAsync(TokenRenewerAsync), (object)azureServiceTokenProvider, tokenAndFrequency2.Frequency.Value);
CloudStorageAccount cloudStorageAccount = new CloudStorageAccount(new StorageCredentials(tokenCredential), AccountName, "core.windows.net", true);
return(cloudStorageAccount);
}
public async Task <string> Get()
{
try
{
// source https://docs.microsoft.com/en-us/azure/storage/common/storage-auth-aad-msi
string storageBaseUri = $"https://{MyStorageAccountName}.blob.core.windows.net";
// Get the initial access token and the interval at which to refresh it.
AzureServiceTokenProvider azureServiceTokenProvider = new AzureServiceTokenProvider();
NewTokenAndFrequency tokenAndFrequency = await TokenRenewerAsync(azureServiceTokenProvider, CancellationToken.None);
// Create storage credentials using the initial token, and connect the callback function
// to renew the token just before it expires
TokenCredential tokenCredential = new TokenCredential(tokenAndFrequency.Token, TokenRenewerAsync, azureServiceTokenProvider, tokenAndFrequency.Frequency.Value);
StorageCredentials storageCredentials = new StorageCredentials(tokenCredential);
CloudBlobClient client = new CloudBlobClient(new Uri(storageBaseUri), storageCredentials);
CloudBlobContainer container = client.GetContainerReference(SampleContainer);
await container.CreateIfNotExistsAsync();
CloudBlockBlob blob = container.GetBlockBlobReference(Blob1Txt);
if (!blob.Exists())
{
// Upload text to the blob.
await blob.UploadTextAsync($"That's ma blob! '{blob.Name}'");
}
return(await blob.DownloadTextAsync());
}
catch (Exception e)
{
// only for meetup purposes only, don't do this in production since it is a security risk! (information leakage)
return(e.ToString());
}
}
