admin: Refactor task destination planning (#7063)

* refactor planning into task detection

* refactoring worker tasks

* refactor

* compiles, but only balance task is registered

* compiles, but has nil exception

* avoid nil logger

* add back ec task

* setting ec log directory

* implement balance and vacuum tasks

* EC tasks will no longer fail with "file not found" errors

* Use ReceiveFile API to send locally generated shards

* distributing shard files and ecx,ecj,vif files

* generate .ecx files correctly

* do not mount all possible EC shards (0-13) on every destination

* use constants

* delete all replicas

* rename files

* pass in volume size to tasks

weed/worker/tasks/base/registration.go

@@ -29,13 +29,28 @@ func NewGenericFactory(taskDef *TaskDefinition) *GenericFactory {
 }
 
 // Create creates a task instance using the task definition
-func (f *GenericFactory) Create(params types.TaskParams) (types.TaskInterface, error) {
+func (f *GenericFactory) Create(params *worker_pb.TaskParams) (types.Task, error) {
 	if f.taskDef.CreateTask == nil {
 		return nil, fmt.Errorf("no task creation function defined for %s", f.taskDef.Type)
 	}
 	return f.taskDef.CreateTask(params)
 }
 
+// Type returns the task type
+func (f *GenericFactory) Type() string {
+	return string(f.taskDef.Type)
+}
+
+// Description returns a description of what this task does
+func (f *GenericFactory) Description() string {
+	return f.taskDef.Description
+}
+
+// Capabilities returns the task capabilities
+func (f *GenericFactory) Capabilities() []string {
+	return f.taskDef.Capabilities
+}
+
 // GenericSchemaProvider provides config schema from TaskDefinition
 type GenericSchemaProvider struct {
 	taskDef *TaskDefinition
@@ -149,7 +164,8 @@ func validateTaskDefinition(taskDef *TaskDefinition) error {
 	if taskDef.Config == nil {
 		return fmt.Errorf("task config is required")
 	}
-	// CreateTask is optional for tasks that use the typed task system
-	// The typed system registers tasks separately via types.RegisterGlobalTypedTask()
+	if taskDef.CreateTask == nil {
+		return fmt.Errorf("task creation function is required")
+	}
 	return nil
 }