public Task <CloudBlobClient> GetAuthorizedClientAsync(IntegrationDataStoreConfiguration integrationDataStoreConfiguration, CancellationToken cancellationToken)
{
if (string.IsNullOrWhiteSpace(integrationDataStoreConfiguration.StorageAccountConnection))
{
throw new IntegrationDataStoreClientInitializerException(Resources.InvalidConnectionSettings, HttpStatusCode.BadRequest);
}
if (!CloudStorageAccount.TryParse(integrationDataStoreConfiguration.StorageAccountConnection, out CloudStorageAccount cloudAccount))
{
throw new IntegrationDataStoreClientInitializerException(Resources.InvalidConnectionSettings, HttpStatusCode.BadRequest);
}
CloudBlobClient blobClient;
try
{
blobClient = cloudAccount.CreateCloudBlobClient();
}
catch (Exception ex)
{
_logger.LogError(ex, "Failed to create a Cloud Blob Client");
throw new IntegrationDataStoreClientInitializerException(Resources.InvalidConnectionSettings, HttpStatusCode.BadRequest);
}
return(Task.FromResult(blobClient));
}
public async Task <CloudBlobClient> GetAuthorizedClientAsync(IntegrationDataStoreConfiguration integrationDataStoreConfiguration, CancellationToken cancellationToken)
{
if (string.IsNullOrWhiteSpace(integrationDataStoreConfiguration.StorageAccountUri))
{
throw new IntegrationDataStoreClientInitializerException(Resources.InvalidStorageUri, HttpStatusCode.BadRequest);
}
if (!Uri.TryCreate(integrationDataStoreConfiguration.StorageAccountUri, UriKind.Absolute, out Uri storageAccountUri))
{
throw new IntegrationDataStoreClientInitializerException(Resources.InvalidStorageUri, HttpStatusCode.BadRequest);
}
string accessToken;
try
{
accessToken = await _accessTokenProvider.GetAccessTokenForResourceAsync(storageAccountUri, cancellationToken);
}
catch (AccessTokenProviderException atp)
{
_logger.LogError(atp, "Unable to get access token");
throw new IntegrationDataStoreClientInitializerException(Resources.CannotGetAccessToken, HttpStatusCode.Unauthorized);
}
#pragma warning disable CA2000 // Dispose objects before losing scope
StorageCredentials storageCredentials = new StorageCredentials(new TokenCredential(accessToken));
#pragma warning restore CA2000 // Dispose objects before losing scope
return(new CloudBlobClient(storageAccountUri, storageCredentials));
}
/// <summary>
/// Customer can use this DataStore to integrate with other Azure services for data purpose.
/// </summary>
/// <param name="fhirServerBuilder">Service builder for FHIR server</param>
/// <param name="configuration">Configuration for FHIR server</param>
public static IFhirServerBuilder AddAzureIntegrationDataStoreClient(this IFhirServerBuilder fhirServerBuilder, IConfiguration configuration)
{
EnsureArg.IsNotNull(fhirServerBuilder, nameof(fhirServerBuilder));
var integrationDataStoreConfiguration = new IntegrationDataStoreConfiguration();
configuration.GetSection(IntegrationDataStoreConfigurationName).Bind(integrationDataStoreConfiguration);
if (!string.IsNullOrWhiteSpace(integrationDataStoreConfiguration.StorageAccountUri))
{
fhirServerBuilder.Services.Add <AzureAccessTokenClientInitializerV2>()
.Transient()
.AsService <IIntegrationDataStoreClientInitilizer <CloudBlobClient> >();
fhirServerBuilder.Services.Add <AzureAccessTokenProvider>()
.Transient()
.AsService <IAccessTokenProvider>();
}
else
{
fhirServerBuilder.Services.Add <AzureConnectionStringClientInitializerV2>()
.Transient()
.AsService <IIntegrationDataStoreClientInitilizer <CloudBlobClient> >();
}
fhirServerBuilder.Services.Add <AzureBlobIntegrationDataStoreClient>()
.Transient()
.AsImplementedInterfaces();
return(fhirServerBuilder);
}
private static AsyncRetryPolicy CreateExtendedRetryPolicy(IntegrationDataStoreConfiguration integrationDataStoreConfiguration)
{
return(Policy.Handle <StorageException>()
.WaitAndRetryAsync(
retryCount: integrationDataStoreConfiguration.MaxRetryCount,
sleepDurationProvider: (_) => TimeSpan.FromSeconds(integrationDataStoreConfiguration.RetryInternalInSecondes),
onRetryAsync: (e, _, _, ctx) =>
{
if (integrationDataStoreConfiguration.MaxWaitTimeInSeconds == -1)
{
// no timeout
return Task.CompletedTask;
}
if (ctx.TryGetValue(RetryEndTimeContextKey, out var endTimeObj))
{
if (DateTime.UtcNow >= (DateTime)endTimeObj)
{
ExceptionDispatchInfo.Throw(e);
}
// otherwise, we have enough time to retry
}
else
{
ctx.Add(RetryEndTimeContextKey, DateTime.UtcNow.AddSeconds(integrationDataStoreConfiguration.MaxWaitTimeInSeconds));
}
return Task.CompletedTask;
}));
}
public AzureConnectionStringClientInitializerV2(IOptions <IntegrationDataStoreConfiguration> integrationDataStoreConfiguration, ILogger <AzureConnectionStringClientInitializerV2> logger)
{
EnsureArg.IsNotNull(integrationDataStoreConfiguration?.Value, nameof(integrationDataStoreConfiguration));
EnsureArg.IsNotNull(logger, nameof(logger));
_integrationDataStoreConfiguration = integrationDataStoreConfiguration.Value;
_logger = logger;
}
public AzureAccessTokenClientInitializerV2(
IAccessTokenProvider accessTokenProvider,
IOptions <IntegrationDataStoreConfiguration> integrationDataStoreConfiguration,
ILogger <AzureAccessTokenClientInitializerV2> logger)
{
EnsureArg.IsNotNull(accessTokenProvider, nameof(accessTokenProvider));
EnsureArg.IsNotNull(integrationDataStoreConfiguration?.Value, nameof(integrationDataStoreConfiguration));
EnsureArg.IsNotNull(logger, nameof(logger));
_accessTokenProvider = accessTokenProvider;
_integrationDataStoreConfiguration = integrationDataStoreConfiguration.Value;
_logger = logger;
}