things for create. might be duplicates

Signed-off-by: Jeff Carr <jcarr@wit.com>

add.go

@@ -1,7 +1,6 @@
 package virtbuf
 
 import (
-	"errors"
 	"fmt"
 	"time"
 
@@ -9,6 +8,7 @@ import (
 	"go.wit.com/log"
 )
 
+/*
 func (c *Cluster) InitDroplet(hostname string) (*Droplet, error) {
 	var d *Droplet
 	d = new(Droplet)
@@ -34,6 +34,7 @@ func (c *Cluster) appendDroplet(d *Droplet) {
 
 	c.d.Droplets = append(c.d.Droplets, d)
 }
+*/
 
 // can the json protobuf output use a string and have a type handler
 // to convert it back to int64?
@@ -94,8 +95,18 @@ func (c *Cluster) AddEvent(e *Event) {
 	c.e.Events = append(c.e.Events, e)
 }
 
-func (c *Cluster) AddDroplet(d *Droplet) {
-	c.d.Droplets = append(c.d.Droplets, d)
+// creates a new droplet with default values
+func NewDefaultDroplet(hostname string) *Droplet {
+	id := uuid.New() // Generate a new UUID
+	d := &Droplet{
+		Uuid:     id.String(),
+		Hostname: hostname,
+		Cpus:     int64(2),
+	}
+	d.Memory = SetGB(2)
+	d.StartState = DropletState_OFF
+
+	return d
 }
 
 func (c *Cluster) AddDropletSimple(uuid string, hostname string, cpus int, mem int) *Droplet {

cluster.go

@@ -17,3 +17,20 @@ type Cluster struct {
 	Unstable        *timestamppb.Timestamp
 	UnstableTimeout *durationpb.Duration
 }
+
+// adds a new droplet. enforce unique hostnames
+func (c *Cluster) AddDroplet(newd *Droplet) bool {
+	c.Lock()
+	defer c.Unlock()
+
+	for _, d := range c.d.Droplets {
+		if newd.Hostname == d.Hostname {
+			// boo. that one is already here
+			return false
+		}
+	}
+
+	// everything is ok, this hostname is new
+	c.d.Droplets = append(c.d.Droplets, newd)
+	return true
+}