/// <summary>
/// Initializes a new instance of the <see cref="EventHubConnection"/> class.
/// </summary>
///
/// <param name="fullyQualifiedNamespace">The fully qualified Event Hubs namespace to connect to. This is likely to be similar to <c>{yournamespace}.servicebus.windows.net</c>.</param>
/// <param name="eventHubName">The name of the specific Event Hub to associate the connection with.</param>
/// <param name="credential">The <see cref="EventHubsSharedAccessKeyCredential"/> to use for authorization. Access controls may be specified by the Event Hubs namespace or the requested Event Hub, depending on Azure configuration.</param>
/// <param name="connectionOptions">A set of options to apply when configuring the connection.</param>
///
internal EventHubConnection(string fullyQualifiedNamespace,
string eventHubName,
EventHubsSharedAccessKeyCredential credential,
EventHubConnectionOptions connectionOptions = default) : this(fullyQualifiedNamespace,
eventHubName,
TranslateSharedKeyCredential(credential, fullyQualifiedNamespace, eventHubName, connectionOptions?.TransportType),
connectionOptions)
{
}
/// <summary>
/// Translates an <see cref="EventHubsSharedAccessKeyCredential"/> into the equivalent shared access signature credential.
/// </summary>
///
/// <param name="credential">The credential to translate.</param>
/// <param name="fullyQualifiedNamespace">The fully qualified Event Hubs namespace being connected to.</param>
/// <param name="eventHubName">The name of the Event Hub being connected to.</param>
/// <param name="transportType">The type of transport being used for the connection.</param>
///
/// <returns>The <see cref="SharedAccessSignatureCredential" /> which the <paramref name="credential" /> was translated into, if the parameters were populated; otherwise, <c>null</c>.</returns>
///
internal static SharedAccessSignatureCredential TranslateSharedKeyCredential(EventHubsSharedAccessKeyCredential credential,
string fullyQualifiedNamespace,
string eventHubName,
EventHubsTransportType?transportType)
{
if ((credential == null) || (string.IsNullOrEmpty(fullyQualifiedNamespace)) || (string.IsNullOrEmpty(eventHubName)))
{
return(null);
}
return(credential.AsSharedAccessSignatureCredential(BuildConnectionAudience(transportType ?? DefaultCredentialTransportType, fullyQualifiedNamespace, eventHubName)));
}