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package virtbuf
import (
"fmt"
"os"
"go.wit.com/log"
)
type DropletIterator struct {
droplets []*Droplet
index int
}
// NewDropletIterator initializes a new iterator.
func NewDropletIterator(droplets []*Droplet) *DropletIterator {
return &DropletIterator{droplets: droplets}
}
// Scan moves to the next element and returns false if there are no more droplets.
func (it *DropletIterator) Scan() bool {
if it.index >= len(it.droplets) {
return false
}
it.index++
return true
}
// Droplet returns the current droplet.
func (it *DropletIterator) Droplet() *Droplet {
if it.droplets[it.index-1] == nil {
for i, d := range it.droplets {
fmt.Println("i =", i, d)
}
fmt.Println("len =", len(it.droplets))
fmt.Println("droplet == nil", it.index, it.index-1)
os.Exit(-1)
}
return it.droplets[it.index-1]
}
// Use Scan() in a loop, similar to a while loop
//
// for iterator.Scan() {
// d := iterator.Droplet()
// fmt.Println("Droplet UUID:", d.Uuid)
// }
func (c *Cluster) GetDropletIterator() *DropletIterator {
dropletPointers := c.SelectDropletPointers()
iterator := NewDropletIterator(dropletPointers)
return iterator
}
func (c *Cluster) DropletsAll() *DropletIterator {
dropletPointers := c.SelectDropletAll()
iterator := NewDropletIterator(dropletPointers)
return iterator
}
// SelectDropletPointers safely returns a slice of pointers to Droplet records.
func (c *Cluster) SelectDropletAll() []*Droplet {
c.RLock()
defer c.RUnlock()
// Create a new slice to hold pointers to each Droplet
// dropletPointers := make([]*Droplet, len(c.E.Droplets))
var dropletPointers []*Droplet
if c.d == nil {
log.Info("SelectDropletsAll() c.d == nil")
// os.Exit(-1)
}
for _, d := range c.d.Droplets {
if d == nil {
continue
}
if d.Archive != nil {
continue
}
dropletPointers = append(dropletPointers, d) // Copy pointers for safe iteration
}
return dropletPointers
}
// SelectDropletPointers safely returns a slice of pointers to Droplet records.
func (c *Cluster) SelectDropletPointers() []*Droplet {
c.RLock()
defer c.RUnlock()
// Create a new slice to hold pointers to each Droplet
// dropletPointers := make([]*Droplet, len(c.E.Droplets))
dropletPointers := make([]*Droplet, 1)
if c.d == nil {
log.Info("c.d == nil")
os.Exit(-1)
}
for _, d := range c.d.Droplets {
dropletPointers = append(dropletPointers, d) // Copy pointers for safe iteration
}
return dropletPointers
}
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