internal HttpManagementPayload CreateHttpManagementPayload(
string instanceId,
string taskHub,
string connectionName)
{
HttpManagementPayload httpManagementPayload = this.GetClientResponseLinks(null, instanceId, taskHub, connectionName);
return(httpManagementPayload);
}
internal HttpResponseMessage CreateCheckStatusResponse(
HttpRequestMessage request,
string instanceId,
OrchestrationClientAttribute attribute)
{
HttpManagementPayload httpManagementPayload = this.GetClientResponseLinks(request, instanceId, attribute?.TaskHub, attribute?.ConnectionName);
return(this.CreateCheckStatusResponseMessage(request, httpManagementPayload.Id, httpManagementPayload.StatusQueryGetUri, httpManagementPayload.SendEventPostUri, httpManagementPayload.TerminatePostUri, httpManagementPayload.RewindPostUri));
}
internal async Task <HttpResponseMessage> WaitForCompletionOrCreateCheckStatusResponseAsync(
HttpRequestMessage request,
string instanceId,
OrchestrationClientAttribute attribute,
TimeSpan timeout,
TimeSpan retryInterval)
{
if (retryInterval > timeout)
{
throw new ArgumentException($"Total timeout {timeout.TotalSeconds} should be bigger than retry timeout {retryInterval.TotalSeconds}");
}
HttpManagementPayload httpManagementPayload = this.GetClientResponseLinks(request, instanceId, attribute?.TaskHub, attribute?.ConnectionName);
DurableOrchestrationClientBase client = this.GetClient(request);
Stopwatch stopwatch = Stopwatch.StartNew();
while (true)
{
DurableOrchestrationStatus status = await client.GetStatusAsync(instanceId);
if (status != null)
{
if (status.RuntimeStatus == OrchestrationRuntimeStatus.Completed)
{
return(request.CreateResponse(HttpStatusCode.OK, status.Output));
}
if (status.RuntimeStatus == OrchestrationRuntimeStatus.Canceled ||
status.RuntimeStatus == OrchestrationRuntimeStatus.Failed ||
status.RuntimeStatus == OrchestrationRuntimeStatus.Terminated)
{
return(await this.HandleGetStatusRequestAsync(request, instanceId));
}
}
TimeSpan elapsed = stopwatch.Elapsed;
if (elapsed < timeout)
{
TimeSpan remainingTime = timeout.Subtract(elapsed);
await Task.Delay(remainingTime > retryInterval?retryInterval : remainingTime);
}
else
{
return(this.CreateCheckStatusResponseMessage(
request,
instanceId,
httpManagementPayload.StatusQueryGetUri,
httpManagementPayload.SendEventPostUri,
httpManagementPayload.TerminatePostUri,
httpManagementPayload.RewindPostUri,
httpManagementPayload.PurgeHistoryDeleteUri));
}
}
}
internal HttpResponseMessage CreateCheckStatusResponse(
HttpRequestMessage request,
string instanceId,
DurableClientAttribute attribute,
bool returnInternalServerErrorOnFailure = false)
{
HttpManagementPayload httpManagementPayload = this.GetClientResponseLinks(request, instanceId, attribute?.TaskHub, attribute?.ConnectionName, returnInternalServerErrorOnFailure);
return(this.CreateCheckStatusResponseMessage(
request,
httpManagementPayload.Id,
httpManagementPayload.StatusQueryGetUri,
httpManagementPayload.SendEventPostUri,
httpManagementPayload.TerminatePostUri,
httpManagementPayload.PurgeHistoryDeleteUri));
}
private HttpManagementPayload GetClientResponseLinks(
HttpRequestMessage request,
string instanceId,
string taskHubName,
string connectionName,
bool returnInternalServerErrorOnFailure = false)
{
this.ThrowIfWebhooksNotConfigured();
Uri notificationUri = this.config.Options.NotificationUrl;
Uri baseUri = request?.RequestUri ?? notificationUri;
// e.g. http://{host}/admin/extensions/DurableTaskExtension?code={systemKey}
string hostUrl = baseUri.GetLeftPart(UriPartial.Authority);
string baseUrl = hostUrl + notificationUri.AbsolutePath.TrimEnd('/');
string allInstancesPrefix = baseUrl + "/" + InstancesControllerSegment;
string instancePrefix = allInstancesPrefix + WebUtility.UrlEncode(instanceId);
string taskHub = WebUtility.UrlEncode(taskHubName ?? this.config.Options.HubName);
string connection = WebUtility.UrlEncode(connectionName ?? this.config.GetDefaultConnectionName());
string querySuffix = $"{TaskHubParameter}={taskHub}&{ConnectionParameter}={connection}";
if (!string.IsNullOrEmpty(notificationUri.Query))
{
// This is expected to include the auto-generated system key for this extension.
querySuffix += "&" + notificationUri.Query.TrimStart('?');
}
var httpManagementPayload = new HttpManagementPayload
{
Id = instanceId,
StatusQueryGetUri = instancePrefix + "?" + querySuffix,
SendEventPostUri = instancePrefix + "/" + RaiseEventOperation + "/{eventName}?" + querySuffix,
TerminatePostUri = instancePrefix + "/" + TerminateOperation + "?reason={text}&" + querySuffix,
RewindPostUri = instancePrefix + "/" + RewindOperation + "?reason={text}&" + querySuffix,
PurgeHistoryDeleteUri = instancePrefix + "?" + querySuffix,
};
if (returnInternalServerErrorOnFailure)
{
httpManagementPayload.StatusQueryGetUri += "&returnInternalServerErrorOnFailure=true";
}
return(httpManagementPayload);
}
private HttpManagementPayload GetClientResponseLinks(
HttpRequestMessage request,
string instanceId,
string taskHubName,
string connectionName)
{
if (this.config.Options.NotificationUrl == null)
{
throw new InvalidOperationException("Webhooks are not configured");
}
Uri notificationUri = this.config.Options.NotificationUrl;
Uri baseUri = request?.RequestUri ?? notificationUri;
// e.g. http://{host}/admin/extensions/DurableTaskExtension?code={systemKey}
string hostUrl = baseUri.GetLeftPart(UriPartial.Authority);
string baseUrl = hostUrl + notificationUri.AbsolutePath.TrimEnd('/');
string instancePrefix = baseUrl + InstancesControllerSegment + WebUtility.UrlEncode(instanceId);
string taskHub = WebUtility.UrlEncode(taskHubName ?? this.config.Options.HubName);
string connection = WebUtility.UrlEncode(connectionName ?? this.config.Options.AzureStorageConnectionStringName ?? ConnectionStringNames.Storage);
string querySuffix = $"{TaskHubParameter}={taskHub}&{ConnectionParameter}={connection}";
if (!string.IsNullOrEmpty(notificationUri.Query))
{
// This is expected to include the auto-generated system key for this extension.
querySuffix += "&" + notificationUri.Query.TrimStart('?');
}
HttpManagementPayload httpManagementPayload = new HttpManagementPayload
{
Id = instanceId,
StatusQueryGetUri = instancePrefix + "?" + querySuffix,
SendEventPostUri = instancePrefix + "/" + RaiseEventOperation + "/{eventName}?" + querySuffix,
TerminatePostUri = instancePrefix + "/" + TerminateOperation + "?reason={text}&" + querySuffix,
RewindPostUri = instancePrefix + "/" + RewindOperation + "?reason={text}&" + querySuffix,
};
return(httpManagementPayload);
}