public static async Task <ActivityResponse <Command_Notification_Response> > GetCommandNotificationsActivity([ActivityTrigger] DurableActivityContext context,
ILogger log)
{
ActivityResponse <Command_Notification_Response> response = new ActivityResponse <Command_Notification_Response>()
{
FunctionName = "CommandNotificationActivity",
ReturnedData = new Command_Notification_Response()
};
Command_Get_Notifications_Request payload = context.GetInput <Command_Get_Notifications_Request>();
if (null != payload)
{
// run the projection to send the notifications..
Projection getCommandNotifications = new Projection(Constants.Domain_Command,
payload.CommandName,
payload.CommandUniqueIdentifier,
nameof(Command_Notifications_Projection));
Command_Notifications_Projection cmdProjection = new Command_Notifications_Projection(log);
await getCommandNotifications.Process(cmdProjection);
if ((cmdProjection.CurrentSequenceNumber > 0) || (cmdProjection.ProjectionValuesChanged()))
{
// Send the completed notification if the command is complete
if (cmdProjection.Completed)
{
// make it an "all completed" notification
response.ReturnedData.Completed = true;
}
else if (cmdProjection.InError)
{
// make it an "all completed" notification
response.ReturnedData.InError = true;
}
else
{
// otherwise send each step notification
foreach (CommandStepCompleted stepCompleted in cmdProjection.StepsCompleted)
{
// make it a "steps completed" notification
}
}
if (null != cmdProjection.ImpactedEntities)
{
response.ReturnedData.ImpactedEntities = cmdProjection.ImpactedEntities;
}
if (null != cmdProjection.NotificationTargetHooks)
{
response.ReturnedData.NotificationTargetHooks = cmdProjection.NotificationTargetHooks;
}
}
}
return(response);
}
public static async Task <HttpResponseMessage> CommandNotificationRun(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = null)] HttpRequestMessage req,
[OrchestrationClient] DurableOrchestrationClient runNotificationOrchestrationClient,
ILogger log)
{
#region Logging
if (null != log)
{
log.LogInformation("Sending command notifications for a command");
}
#endregion
int timeoutLength = 30; // seconds
int retryWait = 1; // seconds
string commandId = req.RequestUri.ParseQueryString()["CommandId"];
string commandName = req.RequestUri.ParseQueryString()["CommandName"];
// Get a timeout and retry wait if they are passed in as parameters
string timeoutLengthString = req.RequestUri.ParseQueryString()["TimeOut"];
if (!string.IsNullOrWhiteSpace(timeoutLengthString))
{
int.TryParse(timeoutLengthString, out timeoutLength);
}
string retryWaitString = req.RequestUri.ParseQueryString()["RetryWait"];
if (!string.IsNullOrWhiteSpace(retryWaitString))
{
int.TryParse(retryWaitString, out retryWait);
}
// Check if the parameters have been passed in the http request body
dynamic eventData = await req.Content.ReadAsAsync <object>();
if (null != eventData)
{
commandId = commandId ?? eventData?.CommandId;
commandName = commandName ?? eventData?.CommandName;
}
// Fire the orchestration to do the actual work of sending notifications
Command_Get_Notifications_Request payload = new Command_Get_Notifications_Request()
{
CommandName = commandName,
CommandUniqueIdentifier = commandId
};
// call the orchestrator...
string instanceId = await runNotificationOrchestrationClient.StartNewAsync("CommandNotificationOrchestrator", payload);
#region Logging
if (null != log)
{
log.LogInformation($"Started CommandNotificationOrchestrator - instance id: {instanceId }");
}
#endregion
// Wait for it to complete
TimeSpan timeout = TimeSpan.FromSeconds(timeoutLength);
TimeSpan retryInterval = TimeSpan.FromSeconds(retryWait);
return(await runNotificationOrchestrationClient.WaitForCompletionOrCreateCheckStatusResponseAsync(
req,
instanceId,
timeout,
retryInterval));
}
public static async Task <ActivityResponse> CommandNotificationOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContext context,
Microsoft.Extensions.Logging.ILogger log)
{
ActivityResponse <Command_Notification_Response> response = new ActivityResponse <Command_Notification_Response>()
{
FunctionName = "CommandNotificationOrchestrator"
};
Command_Get_Notifications_Request request = context.GetInput <Command_Get_Notifications_Request>();
if (null != request)
{
Guid UniqueIdentifierGuid;
if (Guid.TryParse(request.CommandUniqueIdentifier, out UniqueIdentifierGuid))
{
// run the [Command_Notifications_Projection]..
response = await context.CallActivityAsync <ActivityResponse <Command_Notification_Response> >("GetCommandNotificationsActivity", request);
if (null != response)
{
if ((!response.FatalError) && (!response.StepFailure))
{
if (null != response.ReturnedData)
{
List <Task <ActivityResponse> > allNotificationTasks = new List <Task <ActivityResponse> >();
// Only process the notifications that match the state of the command...
IEnumerable <ReturnHookAdded> notificationHooks = null;
if (response.ReturnedData.InError)
{
notificationHooks = response.ReturnedData.NotificationTargetHooks.ForErrors();
}
else
{
if (response.ReturnedData.Completed)
{
notificationHooks = response.ReturnedData.NotificationTargetHooks.ForCompleteCommands();
}
else
{
notificationHooks = response.ReturnedData.NotificationTargetHooks.ForStepComplete();
}
}
// fire off all the notifications in parrallel
foreach (var notificationTarget in notificationHooks)
{
foreach (var notifyEntity in response.ReturnedData.ImpactedEntities)
{
// create an individual notification request
Command_Notification_Request notifyRequest = new Command_Notification_Request()
{
CommandName = request.CommandName,
CommandNotificationType = Command_Notification_Request.NotificationType.StepComplete,
HookAddress = notificationTarget.HookAddress,
HookType = notificationTarget.HookType,
ImpactedEntity = notifyEntity
};
if (response.ReturnedData.InError)
{
notifyRequest.CommandNotificationType = Command_Notification_Request.NotificationType.Error;
}
else
{
if (response.ReturnedData.Completed)
{
notifyRequest.CommandNotificationType = Command_Notification_Request.NotificationType.CommandComplete;
}
}
if (notificationTarget.HookType == CommandNotificationTarget.NotificationTargetType.CustomEventGridTopic)
{
// RunCustomEventGridTopicNotificationActivity
allNotificationTasks.Add(context.CallActivityWithRetryAsync <ActivityResponse>("RunCustomEventGridTopicNotificationActivity",
DomainSettings.CommandRetryOptions(),
notifyRequest));
}
if (notificationTarget.HookType == CommandNotificationTarget.NotificationTargetType.WebHook)
{
// RunWebHookNotificationActivity
allNotificationTasks.Add(context.CallActivityWithRetryAsync <ActivityResponse>("RunWebHookNotificationActivity",
DomainSettings.CommandRetryOptions(),
notifyRequest));
}
if (notificationTarget.HookType == CommandNotificationTarget.NotificationTargetType.SignalR)
{
//RunSignalRNotificationActivity
allNotificationTasks.Add(context.CallActivityWithRetryAsync <ActivityResponse>("RunSignalRNotificationActivity",
DomainSettings.CommandRetryOptions(),
notifyRequest));
}
}
}
// Run the projections in parallel...
await Task.WhenAll(allNotificationTasks);
}
}
else
{
#region Logging
if (null != log)
{
log.LogError($"{response.FunctionName} error - no data returned - {response.Message} ");
}
#endregion
}
}
}
else
{
response.FatalError = true;
response.Message = $"Unable to get command unique identifier for {request.CommandName} {request.CommandUniqueIdentifier } as a GUID ";
}
}
return(response);
}