mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-12 06:20:11 +01:00
67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
/*
|
|
Copyright 2020 The OpenEBS Authors
|
|
|
|
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 driver
|
|
|
|
import (
|
|
"github.com/openebs/zfs-localpv/pkg/builder/volbuilder"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
|
|
zfs "github.com/openebs/zfs-localpv/pkg/zfs"
|
|
)
|
|
|
|
// scheduling algorithm constants
|
|
const (
|
|
// pick the node where less volumes are provisioned for the given pool
|
|
// this will be the default scheduler when none provided
|
|
VolumeWeighted = "VolumeWeighted"
|
|
)
|
|
|
|
// getVolumeWeightedMap goes through all the pools on all the nodes
|
|
// and creats the node mapping of the volume for all the nodes.
|
|
// It returns a map which has nodes as key and volumes present
|
|
// on the nodes as corresponding value.
|
|
func getVolumeWeightedMap(pool string) (map[string]int64, error) {
|
|
nmap := map[string]int64{}
|
|
|
|
zvlist, err := volbuilder.NewKubeclient().
|
|
WithNamespace(zfs.OpenEBSNamespace).
|
|
List(metav1.ListOptions{})
|
|
|
|
if err != nil {
|
|
return nmap, err
|
|
}
|
|
|
|
// create the map of the volume count
|
|
// for the given pool
|
|
for _, zv := range zvlist.Items {
|
|
if zv.Spec.PoolName == pool {
|
|
nmap[zv.Spec.OwnerNodeID]++
|
|
}
|
|
}
|
|
|
|
return nmap, nil
|
|
}
|
|
|
|
// getNodeMap returns the node mapping for the given scheduling algorithm
|
|
func getNodeMap(schd string, pool string) (map[string]int64, error) {
|
|
switch schd {
|
|
case VolumeWeighted:
|
|
return getVolumeWeightedMap(pool)
|
|
}
|
|
// return VolumeWeighted(default) if not specified
|
|
return getVolumeWeightedMap(pool)
|
|
}
|