improved graph/workflow retrieval

daemons/execution_manager.go

@@ -1,12 +1,68 @@
 package daemons
 
-import "oc-scheduler/models"
+import (
+	"oc-scheduler/logger"
+	"oc-scheduler/models"
+	"oc-scheduler/workflow_builder"
+	"time"
+)
 
 type ExecutionManager struct {
-	Bookings	models.ScheduledBooking	
+	bookings	*models.ScheduledBooking
+	executions	[]models.Booking	
 }
 
-func (em *ExecutionManager) test(){
-	em.Bookings.Mu.Lock()
-	defer em.Bookings.Mu.Unlock()
+func (em *ExecutionManager) SetBookings(b *models.ScheduledBooking){
+	em.bookings = b
+}
+
+// Loop every second on the booking's list and move the booking that must start to a new list
+// that will be looped over to start them
+func (em *ExecutionManager) RetrieveNextExecutions(){
+
+	if(em.bookings == nil){
+		logger.Logger.Fatal().Msg("booking has not been set in the exection manager")
+	}
+
+	for(true){
+		logger.Logger.Debug().Msg("New loop")
+		em.bookings.Mu.Lock()
+		bookings :=  em.bookings.Bookings
+		if (len(bookings) > 0){	
+			for i := len( bookings) - 1 ; i  >= 0 ; i--{
+				logger.Logger.Debug().Msg("It should start at " + bookings[i].Start.String() + " and it is now " + time.Now().UTC() .String())
+				if (bookings[i].Start.Before(time.Now().UTC())){
+					logger.Logger.Info().Msg("Will execute " + bookings[i].Workflow + " soon")
+					go em.executeBooking(bookings[i])
+					bookings = append(bookings[:i], bookings[i+1:]...)
+					em.bookings.Bookings = bookings
+				}
+			}
+		}	 
+		em.bookings.Mu.Unlock()
+		time.Sleep(time.Second)
+	}
+
+}
+
+func (em *ExecutionManager) executeBooking(booking models.Booking){
+	// create argo
+	new_graph := workflow_builder.Graph{}
+	
+	err := new_graph.LoadFrom(booking.Workflow)
+	if err != nil {
+		logger.Logger.Error().Msg("Could not retrieve workflow " + booking.Workflow + " from oc-catalog API")
+	}
+
+	argo_file, err := new_graph.ExportToArgo()
+	if err != nil {
+		logger.Logger.Error().Msg("Could not create the Argo file for " + booking.Workflow )
+		logger.Logger.Error().Msg(err.Error())
+	}
+
+	_ = argo_file 
+	// start execution 
+		// locally launch a pod that contains oc-monitor, give it the name of the workflow 
+			// create the yaml that describes the pod : filename, path/url to Loki
+				// locally launch an argo workflow with the filename `argo submit PATH_TO_YAML --watch --serviceaccount=argo -n argo`
 }