/// <summary>
/// Proxies the specified request to the actual Store REST API.
/// </summary>
/// <param name="pathAndQuery">
/// The UriAbsolutePath and Query properties. Simply, this is the entire Uri except for
/// the protocol and domain information.
/// </param>
/// <param name="method">The <see cref="HttpMethod"/> of the REST API.</param>
/// <param name="onBehalfOf">
/// The <see cref="IPrincipal"/> of the user that we're performing the API request on behalf of.
/// </param>
/// <param name="body">The body content of the REST request (if needed).</param>
/// <param name="tenantId">
/// [Optional] The tenantId that should be used for the request if the proxy supports
/// multiple tenants. Mutually exclusive with <paramref name="tenantName"/> since
/// <paramref name="tenantName"/> is a "friendly" version of this value. If neither this
/// nor <paramref name="tenantName"/> are provided, the default TenantId will be used for
/// this request.
/// </param>
/// <param name="tenantName">
/// [Optional] The friendly name of the <paramref name="tenantId"/> that should be used for
/// the request if the proxy supports multiple tenants. Mutually exclusive with
/// <paramref name="tenantId"/> since this is a friendly name version of that value.
/// If neither this nor <paramref name="tenantId"/> are provided, the default TenantId will
/// be used for this request.
/// </param>
/// <param name="endpointType">The type of endpoint that should be used for the request.</param>
/// <param name="correlationId">
/// An ID that a client may have set in the header (which we must proxy) to track a string of related requests.
/// </param>
/// <param name="clientRequestId">
/// An ID that a client may have set in the header (which we must proxy) to track an individual request.
/// </param>
/// <returns>The <see cref="HttpResponseMessage"/> to be sent to the user.</returns>
public static async Task <HttpResponseMessage> PerformRequestAsync(
string pathAndQuery,
HttpMethod method,
IPrincipal onBehalfOf,
string body = null,
string tenantId = null,
string tenantName = null,
EndpointType endpointType = EndpointType.Prod,
string correlationId = null,
string clientRequestId = null)
{
// We'll track how long this takes, for telemetry purposes.
Stopwatch stopwatch = Stopwatch.StartNew();
// Assume ok unless we find out otherwise.
HttpStatusCode statusCode = HttpStatusCode.OK;
// We want to record the request header for every request in case we need to look up failures later.
string requestId = string.Empty;
// We also want to store the ClientId so that it's easier to see distribution of requests across Clients.
string clientId = string.Empty;
try
{
Endpoint endpoint = null;
HttpResponseMessage response;
if (ProxyManager.TryGetEndpoint(tenantId, tenantName, endpointType, out endpoint, out response))
{
clientId = endpoint.ClientId;
response = await endpoint.PerformRequestAsync(pathAndQuery, method, onBehalfOf, body, correlationId, clientRequestId);
}
// We'll capture the status code for use in the finally block.
statusCode = response.StatusCode;
// Get any of the request ID headers that can be used for post-mortem diagnostics. We'll use them in the finally block.
IEnumerable <string> headerValues;
if (response.Headers.TryGetValues(ProxyManager.MSCorrelationIdHeader, out headerValues))
{
// If the client supplied a correlationId, the value we're getting back from the API should be identical.
correlationId = headerValues.FirstOrDefault();
}
if (response.Headers.TryGetValues(ProxyManager.MSRequestIdHeader, out headerValues))
{
requestId = headerValues.FirstOrDefault();
}
if (response.Headers.TryGetValues(ProxyManager.MSClientRequestIdHeader, out headerValues))
{
// If the client supplied a clientRequestId, the value we're getting back from the API should be identical.
clientRequestId = headerValues.FirstOrDefault();
}
return(response);
}
finally
{
stopwatch.Stop();
ProxyManager.LogTelemetryEvent(
onBehalfOf.Identity.Name,
pathAndQuery,
method,
tenantId,
tenantName,
clientId,
endpointType,
statusCode,
correlationId,
requestId,
clientRequestId,
stopwatch.Elapsed.TotalSeconds);
}
}
