func PurgeSnapshots(svc *ec2.EC2) error {
dsi := ec2.DescribeSnapshotsInput{}
filter := &ec2.Filter{}
filterName := "tag:" + PurgeAllowKey
filter.Name = &filterName
value := "true"
filter.Values = []*string{&value}
dsi.Filters = append(dsi.Filters, filter)
dso, err := svc.DescribeSnapshots(&dsi)
if err != nil {
return fmt.Errorf("describeSnapshots error, %s", err)
}
purgeCount := 0
for _, snapshot := range dso.Snapshots {
var paVal string
var found bool
if paVal, found = getTagValue(PurgeAfterKey, snapshot.Tags); !found {
log.Printf("snapshot ID %s has tag '%s' but does not have a '%s' tag. Skipping purge...", *snapshot.SnapshotId, PurgeAllowKey, PurgeAfterKey)
continue
}
pa, err := time.Parse(PurgeAfterFormat, paVal)
if err != nil {
return err
}
if pa.Before(time.Now()) {
deli := ec2.DeleteSnapshotInput{}
deli.SnapshotId = snapshot.SnapshotId
_, err := svc.DeleteSnapshot(&deli)
if err != nil {
return fmt.Errorf("error purging Snapshot ID %s, err %s", *snapshot.SnapshotId, err)
}
log.Printf("snapshot ID '%s' purged, size %d GiB\n", *snapshot.SnapshotId, *snapshot.VolumeSize)
purgeCount++
}
}
log.Printf("%d snapshots purged\n", purgeCount)
return nil
}
// Snapshots is a wrapper for (*ec2.EC2).DescribeSnapshotsPages.
//
// If call succeeds but no snapshots were found, it returns non-nil
// *NotFoundError error.
func (c *Client) Snapshots() ([]*ec2.Snapshot, error) {
var snapshots []*ec2.Snapshot
var params ec2.DescribeSnapshotsInput
if c.MaxResults != 0 {
params.MaxResults = aws.Int64(c.MaxResults)
}
var page int
err := c.EC2.DescribeSnapshotsPages(¶ms, func(resp *ec2.DescribeSnapshotsOutput, _ bool) bool {
page++
c.Log.Debug("received %d snapshots (page=%d)", len(resp.Snapshots), page)
snapshots = append(snapshots, resp.Snapshots...)
return true
})
if err != nil {
return nil, awsError(err)
}
if len(snapshots) == 0 {
return nil, newNotFoundError("Snapshot", errors.New("no snapshots found"))
}
return snapshots, nil
}