add ability to remove user and add task depndencies closes #69

logic/tasks/runner/runner.go

@@ -14,6 +14,7 @@ import (
 	. "git.andr3h3nriqu3s.com/andr3/fyp/logic/models"
 	. "git.andr3h3nriqu3s.com/andr3/fyp/logic/models/train"
 	. "git.andr3h3nriqu3s.com/andr3/fyp/logic/tasks/utils"
+	. "git.andr3h3nriqu3s.com/andr3/fyp/logic/users"
 	. "git.andr3h3nriqu3s.com/andr3/fyp/logic/utils"
 )
 
@@ -71,6 +72,14 @@ func runner(config Config, db *sql.DB, task_channel chan Task, index int, back_c
 				logger.Error("Failed to tain the model", "error", err)
 			}
 
+			back_channel <- index
+			continue
+		} else if task.TaskType == int(TASK_TYPE_DELETE_USER) {
+			logger.Warn("User deleting Task")
+			if err = DeleteUser(base, task); err != nil {
+				logger.Error("Failed to tain the model", "error", err)
+			}
+
 			back_channel <- index
 			continue
 		}
@@ -168,16 +177,23 @@ func RunnerOrchestrator(db *sql.DB, config Config) {
 		}
 
 		if task_to_dispatch == nil {
-			var task Task
-			err := GetDBOnce(db, &task, "tasks where status=$1 limit 1", TASK_TODO)
+			var task TaskT
+			err := GetDBOnce(db, &task, "tasks as t "+
+				// Get depenencies
+				"left join tasks_dependencies as td on t.id=td.main_id "+
+				// Get the task that the depencey resolves to
+				"left join tasks as t2 on t2.id=td.dependent_id "+
+				"where t.status=1 "+
+				"group by t.id having count(td.id) filter (where t2.status in (0,1,2,3)) = 0;")
 			if err != NotFoundError && err != nil {
-				log.Error("Failed to get tasks from db")
+				log.Error("Failed to get tasks from db", "err", err)
 				continue
 			}
 			if err == NotFoundError {
 				task_to_dispatch = nil
 			} else {
-				task_to_dispatch = &task
+				temp := Task(task)
+				task_to_dispatch = &temp
 			}
 		}