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/*
* Copyright 2020 Intel Corporation, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package module
import (
"container/heap"
log "github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/module/controller"
mtypes "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module/types"
)
// ControllerTypePlacement denotes "placement" Controller Type
const ControllerTypePlacement string = "placement"
// ControllerTypeAction denotes "action" Controller Type
const ControllerTypeAction string = "action"
// ControllerElement consists of controller and an internal field - index
type ControllerElement struct {
controller controller.Controller
index int // used for indexing the HeapArray
}
// PrioritizedControlList contains PrioritizedList of PlacementControllers and ActionControllers
type PrioritizedControlList struct {
pPlaCont []controller.Controller
pActCont []controller.Controller
}
// PriorityQueue is the heapArray to store the Controllers
type PriorityQueue []*ControllerElement
func (pq PriorityQueue) Len() int { return len(pq) }
func (pq PriorityQueue) Less(i, j int) bool {
// We want Pop to give us highest Priority controller
// The lower the number, higher the priority
return pq[i].controller.Spec.Priority < pq[j].controller.Spec.Priority
}
// Pop method returns the controller with the highest priority
func (pq *PriorityQueue) Pop() interface{} {
old := *pq
n := len(old)
c := old[n-1]
c.index = -1
*pq = old[0 : n-1]
return c
}
// Push method add a controller into the heapArray
func (pq *PriorityQueue) Push(c interface{}) {
n := len(*pq)
controllerElement := c.(*ControllerElement)
controllerElement.index = n
*pq = append(*pq, controllerElement)
}
func (pq PriorityQueue) Swap(i, j int) {
pq[i], pq[j] = pq[j], pq[i]
pq[i].index = i
pq[j].index = j
}
func getPrioritizedControllerList(p, ca, v, di string) (PrioritizedControlList, map[string]string, error) {
listOfControllers := make([]string, 0) // shall contain the real controllerNames to be passed to controllerAPI
mapOfControllers := make(map[string]string)
iList, err := NewIntentClient().GetAllIntents(p, ca, v, di)
if err != nil {
return PrioritizedControlList{}, map[string]string{}, err
}
for _, eachmap := range iList.ListOfIntents {
for controller, controllerIntent := range eachmap {
if controller != GenericPlacementIntentName {
listOfControllers = append(listOfControllers, controller)
mapOfControllers[controller] = controllerIntent
}
}
}
listPC := make([]*ControllerElement, 0)
listAC := make([]*ControllerElement, 0)
for _, cn := range listOfControllers {
c, err := NewClient().Controller.GetController(cn)
if err != nil {
return PrioritizedControlList{}, map[string]string{}, err
}
if c.Spec.Type == ControllerTypePlacement {
// Collect in listPC
listPC = append(listPC, &ControllerElement{controller: controller.Controller{
Metadata: mtypes.Metadata{
Name: c.Metadata.Name,
Description: c.Metadata.Description,
UserData1: c.Metadata.UserData1,
UserData2: c.Metadata.UserData2,
},
Spec: controller.ControllerSpec{
Host: c.Spec.Host,
Port: c.Spec.Port,
Type: c.Spec.Type,
Priority: c.Spec.Priority,
},
}})
} else if c.Spec.Type == ControllerTypeAction {
// Collect in listAC
listAC = append(listAC, &ControllerElement{controller: controller.Controller{
Metadata: mtypes.Metadata{
Name: c.Metadata.Name,
Description: c.Metadata.Description,
UserData1: c.Metadata.UserData1,
UserData2: c.Metadata.UserData2,
},
Spec: controller.ControllerSpec{
Host: c.Spec.Host,
Port: c.Spec.Port,
Type: c.Spec.Type,
Priority: c.Spec.Priority,
},
}})
} else {
log.Info("Controller type undefined", log.Fields{"Controller type": c.Spec.Type, "ControllerName": c.Metadata.Name})
}
}
pqPlacementCont := make(PriorityQueue, len(listPC))
for i, eachPC := range listPC {
pqPlacementCont[i] = &ControllerElement{controller: eachPC.controller, index: i}
}
prioritizedPlaControllerList := make([]controller.Controller, 0)
heap.Init(&pqPlacementCont)
for pqPlacementCont.Len() > 0 {
ce := heap.Pop(&pqPlacementCont).(*ControllerElement)
prioritizedPlaControllerList = append(prioritizedPlaControllerList, ce.controller)
}
pqActionCont := make(PriorityQueue, len(listAC))
for i, eachAC := range listAC {
pqActionCont[i] = &ControllerElement{controller: eachAC.controller, index: i}
}
prioritizedActControllerList := make([]controller.Controller, 0)
heap.Init(&pqActionCont)
for pqActionCont.Len() > 0 {
ce := heap.Pop(&pqActionCont).(*ControllerElement)
prioritizedActControllerList = append(prioritizedActControllerList, ce.controller)
}
prioritizedControlList := PrioritizedControlList{pPlaCont: prioritizedPlaControllerList, pActCont: prioritizedActControllerList}
return prioritizedControlList, mapOfControllers, nil
}
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