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@@ -1,352 +0,0 @@
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package workflow_execution
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import (
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"errors"
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"fmt"
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"strings"
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"sync"
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"time"
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"cloud.o-forge.io/core/oc-lib/models/bill"
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"cloud.o-forge.io/core/oc-lib/models/booking"
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"cloud.o-forge.io/core/oc-lib/models/common/enum"
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"cloud.o-forge.io/core/oc-lib/models/common/pricing"
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"cloud.o-forge.io/core/oc-lib/models/order"
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"cloud.o-forge.io/core/oc-lib/models/peer"
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"cloud.o-forge.io/core/oc-lib/models/resources/purchase_resource"
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"cloud.o-forge.io/core/oc-lib/models/utils"
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"cloud.o-forge.io/core/oc-lib/models/workflow"
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"cloud.o-forge.io/core/oc-lib/tools"
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"github.com/google/uuid"
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"github.com/robfig/cron"
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)
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/*
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* WorkflowSchedule is a struct that contains the scheduling information of a workflow
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* It contains the mode of the schedule (Task or Service), the name of the schedule, the start and end time of the schedule and the cron expression
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*/
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// it's a flying object only use in a session time. It's not stored in the database
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type WorkflowSchedule struct {
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UUID string `json:"id" validate:"required"` // ExecutionsID is the list of the executions id of the workflow
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Workflow *workflow.Workflow `json:"workflow,omitempty"` // Workflow is the workflow dependancy of the schedule
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WorkflowExecution []*WorkflowExecution `json:"workflow_executions,omitempty"` // WorkflowExecution is the list of executions of the workflow
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Message string `json:"message,omitempty"` // Message is the message of the schedule
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Warning string `json:"warning,omitempty"` // Warning is the warning message of the schedule
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Start time.Time `json:"start" validate:"required,ltfield=End"` // Start is the start time of the schedule, is required and must be less than the End time
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End *time.Time `json:"end,omitempty"` // End is the end time of the schedule, is required and must be greater than the Start time
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DurationS float64 `json:"duration_s" default:"-1"` // End is the end time of the schedule
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Cron string `json:"cron,omitempty"` // here the cron format : ss mm hh dd MM dw task
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BookingMode booking.BookingMode `json:"booking_mode,omitempty"` // BookingMode qualify the preemption order of the scheduling. if no payment allowed with preemption set up When_Possible
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SelectedInstances workflow.ConfigItem `json:"selected_instances"`
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SelectedPartnerships workflow.ConfigItem `json:"selected_partnerships"`
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SelectedBuyings workflow.ConfigItem `json:"selected_buyings"`
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SelectedStrategies workflow.ConfigItem `json:"selected_strategies"`
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SelectedBillingStrategy pricing.BillingStrategy `json:"selected_billing_strategy"`
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}
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// TODO PREEMPTION !
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/*
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To schedule a preempted, omg.
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pour faire ça on doit alors lancé une exécution prioritaire qui passera devant toutes les autres, celon un niveau de priorité.
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Preemptible = 7, pour le moment il n'existera que 0 et 7.
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Dans le cas d'une préemption l'exécution est immédiable et bloquera tout le monde tant qu'il n'a pas été exécuté.
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Une ressource doit pouvoir être preemptible pour être exécutée de la sorte.
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Se qui implique si on est sur une ressource par ressource que si un élement n'est pas préemptible,
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alors il devra être effectué dés que possible
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Dans le cas dés que possible, la start date est immédiate MAIS !
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ne pourra se lancé que SI il n'existe pas d'exécution se lançant durant la période indicative. ( Ultra complexe )
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*/
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func NewScheduler(mode int, start string, end string, durationInS float64, cron string) *WorkflowSchedule {
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ws := &WorkflowSchedule{
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UUID: uuid.New().String(),
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Start: time.Now(),
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BookingMode: booking.BookingMode(mode),
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DurationS: durationInS,
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Cron: cron,
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}
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s, err := time.Parse("2006-01-02T15:04:05", start)
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if err == nil && ws.BookingMode == booking.PLANNED {
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ws.Start = s // can apply a defined start other than now, if planned
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}
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e, err := time.Parse("2006-01-02T15:04:05", end)
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if err == nil {
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ws.End = &e
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}
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return ws
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}
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func (ws *WorkflowSchedule) GetBuyAndBook(wfID string, request *tools.APIRequest) (bool, *workflow.Workflow, []*WorkflowExecution, []*purchase_resource.PurchaseResource, []*booking.Booking, error) {
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if request.Caller == nil && request.Caller.URLS == nil && request.Caller.URLS[tools.BOOKING] == nil || request.Caller.URLS[tools.BOOKING][tools.GET] == "" {
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return false, nil, []*WorkflowExecution{}, []*purchase_resource.PurchaseResource{}, []*booking.Booking{}, errors.New("no caller defined")
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}
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access := workflow.NewAccessor(request)
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res, code, err := access.LoadOne(wfID)
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if code != 200 {
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return false, nil, []*WorkflowExecution{}, []*purchase_resource.PurchaseResource{}, []*booking.Booking{}, errors.New("could not load the workflow with id: " + err.Error())
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}
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wf := res.(*workflow.Workflow)
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isPreemptible, longest, priceds, wf, err := wf.Planify(ws.Start, ws.End,
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ws.SelectedInstances, ws.SelectedPartnerships, ws.SelectedBuyings, ws.SelectedStrategies,
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int(ws.BookingMode), request)
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if err != nil {
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return false, wf, []*WorkflowExecution{}, []*purchase_resource.PurchaseResource{}, []*booking.Booking{}, err
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}
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ws.DurationS = longest
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ws.Message = "We estimate that the workflow will start at " + ws.Start.String() + " and last " + fmt.Sprintf("%v", ws.DurationS) + " seconds."
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if ws.End != nil && ws.Start.Add(time.Duration(longest)*time.Second).After(*ws.End) {
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ws.Warning = "The workflow may be too long to be executed in the given time frame, we will try to book it anyway\n"
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}
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execs, err := ws.GetExecutions(wf, isPreemptible)
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if err != nil {
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return false, wf, []*WorkflowExecution{}, []*purchase_resource.PurchaseResource{}, []*booking.Booking{}, err
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}
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purchased := []*purchase_resource.PurchaseResource{}
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bookings := []*booking.Booking{}
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for _, exec := range execs {
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purchased = append(purchased, exec.Buy(ws.SelectedBillingStrategy, ws.UUID, wfID, priceds)...)
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bookings = append(bookings, exec.Book(ws.UUID, wfID, priceds)...)
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}
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errCh := make(chan error, len(bookings))
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var m sync.Mutex
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for _, b := range bookings {
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go getBooking(b, request, errCh, &m)
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}
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for i := 0; i < len(bookings); i++ {
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if err := <-errCh; err != nil {
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return false, wf, execs, purchased, bookings, err
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}
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}
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return true, wf, execs, purchased, bookings, nil
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}
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func (ws *WorkflowSchedule) GenerateOrder(purchases []*purchase_resource.PurchaseResource, bookings []*booking.Booking, request *tools.APIRequest) error {
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newOrder := &order.Order{
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AbstractObject: utils.AbstractObject{
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Name: "order_" + request.PeerID + "_" + time.Now().UTC().Format("2006-01-02T15:04:05"),
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IsDraft: true,
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},
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ExecutionsID: ws.UUID,
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Purchases: purchases,
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Bookings: bookings,
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Status: enum.PENDING,
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}
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if res, _, err := order.NewAccessor(request).StoreOne(newOrder); err == nil {
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if _, err := bill.DraftFirstBill(res.(*order.Order), request); err != nil {
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return err
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}
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return nil
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} else {
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return err
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}
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}
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func getBooking(b *booking.Booking, request *tools.APIRequest, errCh chan error, m *sync.Mutex) {
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m.Lock()
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c, err := getCallerCopy(request, errCh)
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if err != nil {
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errCh <- err
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return
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}
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m.Unlock()
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meth := c.URLS[tools.BOOKING][tools.GET]
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meth = strings.ReplaceAll(meth, ":id", b.ResourceID)
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meth = strings.ReplaceAll(meth, ":start_date", b.ExpectedStartDate.Format("2006-01-02T15:04:05"))
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meth = strings.ReplaceAll(meth, ":end_date", b.ExpectedEndDate.Format("2006-01-02T15:04:05"))
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c.URLS[tools.BOOKING][tools.GET] = meth
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_, err = (&peer.Peer{}).LaunchPeerExecution(b.DestPeerID, b.ResourceID, tools.BOOKING, tools.GET, nil, &c)
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if err != nil {
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errCh <- fmt.Errorf("error on " + b.DestPeerID + err.Error())
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return
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}
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errCh <- nil
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}
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func getCallerCopy(request *tools.APIRequest, errCh chan error) (tools.HTTPCaller, error) {
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var c tools.HTTPCaller
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err := request.Caller.DeepCopy(c)
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if err != nil {
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errCh <- err
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return tools.HTTPCaller{}, nil
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}
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c.URLS = request.Caller.URLS
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return c, err
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}
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func (ws *WorkflowSchedule) Schedules(wfID string, request *tools.APIRequest) (*WorkflowSchedule, *workflow.Workflow, []*WorkflowExecution, error) {
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if request == nil {
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return ws, nil, []*WorkflowExecution{}, errors.New("no request found")
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}
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c := request.Caller
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if c == nil || c.URLS == nil || c.URLS[tools.BOOKING] == nil {
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return ws, nil, []*WorkflowExecution{}, errors.New("no caller defined")
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}
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methods := c.URLS[tools.BOOKING]
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if _, ok := methods[tools.GET]; !ok {
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return ws, nil, []*WorkflowExecution{}, errors.New("no path found")
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}
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ok, wf, executions, purchases, bookings, err := ws.GetBuyAndBook(wfID, request)
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ws.WorkflowExecution = executions
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if !ok || err != nil {
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return ws, nil, executions, errors.New("could not book the workflow : " + fmt.Sprintf("%v", err))
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}
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ws.Workflow = wf
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var errCh = make(chan error, len(bookings))
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var m sync.Mutex
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for _, purchase := range purchases {
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go ws.CallDatacenter(purchase, purchase.DestPeerID, tools.PURCHASE_RESOURCE, request, errCh, &m)
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}
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for i := 0; i < len(purchases); i++ {
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if err := <-errCh; err != nil {
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return ws, wf, executions, errors.New("could not launch the peer execution : " + fmt.Sprintf("%v", err))
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}
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}
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errCh = make(chan error, len(bookings))
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for _, booking := range bookings {
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go ws.CallDatacenter(booking, booking.DestPeerID, tools.BOOKING, request, errCh, &m)
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}
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for i := 0; i < len(bookings); i++ {
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if err := <-errCh; err != nil {
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return ws, wf, executions, errors.New("could not launch the peer execution : " + fmt.Sprintf("%v", err))
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}
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}
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if err := ws.GenerateOrder(purchases, bookings, request); err != nil {
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return ws, wf, executions, err
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}
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fmt.Println("Schedules")
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for _, exec := range executions {
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err := exec.PurgeDraft(request)
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if err != nil {
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return ws, nil, []*WorkflowExecution{}, errors.New("purge draft" + fmt.Sprintf("%v", err))
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}
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exec.StoreDraftDefault()
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utils.GenericStoreOne(exec, NewAccessor(request))
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}
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fmt.Println("Schedules")
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return ws, wf, executions, nil
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}
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func (ws *WorkflowSchedule) CallDatacenter(purchase utils.DBObject, destPeerID string, dt tools.DataType, request *tools.APIRequest, errCh chan error, m *sync.Mutex) {
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m.Lock()
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c, err := getCallerCopy(request, errCh)
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if err != nil {
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errCh <- err
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return
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}
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m.Unlock()
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if res, err := (&peer.Peer{}).LaunchPeerExecution(destPeerID, "", dt, tools.POST, purchase.Serialize(purchase), &c); err != nil {
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errCh <- err
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return
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} else {
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data := res["data"].(map[string]interface{})
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purchase.SetID(fmt.Sprintf("%v", data["id"]))
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}
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errCh <- nil
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}
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/*
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BOOKING IMPLIED TIME, not of subscription but of execution
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so is processing time execution time applied on computes
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data can improve the processing time
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time should implied a security time border (10sec) if not from the same executions
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VERIFY THAT WE HANDLE DIFFERENCE BETWEEN LOCATION TIME && BOOKING
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*/
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/*
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* getExecutions is a function that returns the executions of a workflow
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* it returns an array of workflow_execution.WorkflowExecution
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*/
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func (ws *WorkflowSchedule) GetExecutions(workflow *workflow.Workflow, isPreemptible bool) ([]*WorkflowExecution, error) {
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workflows_executions := []*WorkflowExecution{}
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dates, err := ws.GetDates()
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if err != nil {
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return workflows_executions, err
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}
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for _, date := range dates {
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obj := &WorkflowExecution{
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AbstractObject: utils.AbstractObject{
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UUID: uuid.New().String(), // set the uuid of the execution
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Name: workflow.Name + "_execution_" + date.Start.String(), // set the name of the execution
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|
|
|
},
|
|
|
|
|
Priority: 1,
|
|
|
|
|
ExecutionsID: ws.UUID,
|
|
|
|
|
ExecDate: date.Start, // set the execution date
|
|
|
|
|
EndDate: date.End, // set the end date
|
|
|
|
|
State: enum.DRAFT, // set the state to 1 (scheduled)
|
|
|
|
|
WorkflowID: workflow.GetID(), // set the workflow id dependancy of the execution
|
|
|
|
|
}
|
|
|
|
|
if ws.BookingMode != booking.PLANNED {
|
|
|
|
|
obj.Priority = 0
|
|
|
|
|
}
|
|
|
|
|
if ws.BookingMode == booking.PREEMPTED && isPreemptible {
|
|
|
|
|
obj.Priority = 7
|
|
|
|
|
}
|
|
|
|
|
workflows_executions = append(workflows_executions, obj)
|
|
|
|
|
}
|
|
|
|
|
return workflows_executions, nil
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (ws *WorkflowSchedule) GetDates() ([]Schedule, error) {
|
|
|
|
|
schedule := []Schedule{}
|
|
|
|
|
if len(ws.Cron) > 0 { // if cron is set then end date should be set
|
|
|
|
|
if ws.End == nil {
|
|
|
|
|
return schedule, errors.New("a cron task should have an end date")
|
|
|
|
|
}
|
|
|
|
|
if ws.DurationS <= 0 {
|
|
|
|
|
ws.DurationS = ws.End.Sub(ws.Start).Seconds()
|
|
|
|
|
}
|
|
|
|
|
cronStr := strings.Split(ws.Cron, " ") // split the cron string to treat it
|
|
|
|
|
if len(cronStr) < 6 { // if the cron string is less than 6 fields, return an error because format is : ss mm hh dd MM dw (6 fields)
|
|
|
|
|
return schedule, errors.New("Bad cron message: (" + ws.Cron + "). Should be at least ss mm hh dd MM dw")
|
|
|
|
|
}
|
|
|
|
|
subCron := strings.Join(cronStr[:6], " ")
|
|
|
|
|
// cron should be parsed as ss mm hh dd MM dw t (min 6 fields)
|
|
|
|
|
specParser := cron.NewParser(cron.Second | cron.Minute | cron.Hour | cron.Dom | cron.Month | cron.Dow) // create a new cron parser
|
|
|
|
|
sched, err := specParser.Parse(subCron) // parse the cron string
|
|
|
|
|
if err != nil {
|
|
|
|
|
return schedule, errors.New("Bad cron message: " + err.Error())
|
|
|
|
|
}
|
|
|
|
|
// loop through the cron schedule to set the executions
|
|
|
|
|
for s := sched.Next(ws.Start); !s.IsZero() && s.Before(*ws.End); s = sched.Next(s) {
|
|
|
|
|
e := s.Add(time.Duration(ws.DurationS) * time.Second)
|
|
|
|
|
schedule = append(schedule, Schedule{
|
|
|
|
|
Start: s,
|
|
|
|
|
End: &e,
|
|
|
|
|
})
|
|
|
|
|
}
|
|
|
|
|
} else { // if no cron, set the execution to the start date
|
|
|
|
|
schedule = append(schedule, Schedule{
|
|
|
|
|
Start: ws.Start,
|
|
|
|
|
End: ws.End,
|
|
|
|
|
})
|
|
|
|
|
}
|
|
|
|
|
return schedule, nil
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
type Schedule struct {
|
|
|
|
|
Start time.Time
|
|
|
|
|
End *time.Time
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* TODO : LARGEST GRAIN PLANIFYING THE WORKFLOW WHEN OPTION IS SET
|
|
|
|
|
* SET PROTECTION BORDER TIME
|
|
|
|
|
*/
|