terraform/builtin/providers/aws/sort.go

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package aws
import (
"sort"
"time"
"github.com/aws/aws-sdk-go/service/ec2"
)
type imageSort []*ec2.Image
type snapshotSort []*ec2.Snapshot
func (a imageSort) Len() int {
return len(a)
}
func (a imageSort) Swap(i, j int) {
a[i], a[j] = a[j], a[i]
}
func (a imageSort) Less(i, j int) bool {
itime, _ := time.Parse(time.RFC3339, *a[i].CreationDate)
jtime, _ := time.Parse(time.RFC3339, *a[j].CreationDate)
return itime.Unix() < jtime.Unix()
}
// Sort images by creation date, in descending order.
func sortImages(images []*ec2.Image) []*ec2.Image {
sortedImages := images
sort.Sort(sort.Reverse(imageSort(sortedImages)))
return sortedImages
}
func (a snapshotSort) Len() int {
return len(a)
}
func (a snapshotSort) Swap(i, j int) {
a[i], a[j] = a[j], a[i]
}
func (a snapshotSort) Less(i, j int) bool {
itime := *a[i].StartTime
jtime := *a[j].StartTime
return itime.Unix() < jtime.Unix()
}
// Sort snapshots by creation date, in descending order.
func sortSnapshots(snapshots []*ec2.Snapshot) []*ec2.Snapshot {
sortedSnapshots := snapshots
sort.Sort(sort.Reverse(snapshotSort(sortedSnapshots)))
return sortedSnapshots
}