checking for duplicate filenames works

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

Makefile

@@ -10,7 +10,7 @@ all:
 	./virtigo --help
 
 xml-add:
-	./virtigo --libvirt ~/libvirt/*.xml --xml-ignore-disk
+	./virtigo --libvirt ~/libvirt/*.xml
 
 start-all-droplets:
 	curl --silent http://localhost:8080/start?start=git.wit.org

addDroplet.go

@@ -166,7 +166,7 @@ func updateDroplet(d *DropletT, domcfg *libvirtxml.Domain) ([]*pb.Event, error)
 	nete, err := updateNetwork(d, domcfg)
 	if err != nil {
 		log.Info("updateNetwork() failed", err)
-		return alle, errors.New("updateNetwork() failed")
+		return alle, err
 	}
 
 	for _, e := range nete {
@@ -176,8 +176,14 @@ func updateDroplet(d *DropletT, domcfg *libvirtxml.Domain) ([]*pb.Event, error)
 	log.Info("TODO: fix updateDisk() change events")
 	log.Info("TODO: fix updateDisk() change events")
 	log.Info("TODO: fix updateDisk() change events")
-	if !updateDisk(d, domcfg) {
+	nete, err = updateDisk(d, domcfg)
-		return alle, errors.New("updateDisk() failed")
+	if err != nil {
+		log.Info("updateDisk() failed", err)
+		return alle, err
+	}
+
+	for _, e := range nete {
+		alle = append(alle, e)
 	}
 
 	if alle == nil {
@@ -185,8 +191,6 @@ func updateDroplet(d *DropletT, domcfg *libvirtxml.Domain) ([]*pb.Event, error)
 		return alle, nil
 	}
 	log.Info("libvirt xml import worked. droplet changed", domcfg.Name)
-	// log.Info("all change events", alle)
-	me.changed = true
 
 	// append each change event
 	for _, e := range alle {
@@ -349,9 +353,11 @@ func updateNetwork(d *DropletT, domcfg *libvirtxml.Domain) ([]*pb.Event, error)
 */
 
 // returns false if something went wrong
-func updateDisk(d *DropletT, domcfg *libvirtxml.Domain) bool {
+func updateDisk(d *DropletT, domcfg *libvirtxml.Domain) ([]*pb.Event, error) {
+	var alle []*pb.Event
+
 	if (d == nil) || (domcfg == nil) {
-		return false
+		return nil, errors.New("domcfg == nil")
 	}
 	for _, disk := range domcfg.Devices.Disks {
 		var t *libvirtxml.DomainDiskSourceFile
@@ -366,6 +372,16 @@ func updateDisk(d *DropletT, domcfg *libvirtxml.Domain) bool {
 			continue
 		}
 
+		e, err := insertFilename(d.pb, filename)
+		if err != nil {
+			return alle, err
+		}
+		if e == nil {
+			continue
+		}
+		alle = append(alle, e)
+
+		/*
 			var found bool = false
 			for _, disk := range d.pb.Disks {
 				if disk.Filename == filename {
@@ -381,6 +397,7 @@ func updateDisk(d *DropletT, domcfg *libvirtxml.Domain) bool {
 				log.Info("New filename", filename)
 				me.changed = true
 			}
+		*/
 	}
-	return true
+	return alle, nil
 }

main.go

@@ -63,7 +63,6 @@ func main() {
 	}
 	checkUniqueFilenames()
 
-
 	for _, filename := range argv.Xml {
 		domcfg, err := readXml(filename)
 		if err != nil {

validate.go

@@ -14,6 +14,7 @@ package main
 */
 
 import (
+	"errors"
 	"os"
 	"path/filepath"
 
@@ -50,6 +51,49 @@ func addClusterFilepath(dir string) {
 	}
 }
 
+// returns the droplet using a filename
+func lookupFilename(filename string) *pb.Droplet {
+	filebase := filepath.Base(filename)
+
+	for _, d := range me.cluster.Droplets {
+		for _, disk := range d.Disks {
+			if filebase == disk.Filename {
+				return d
+			}
+		}
+	}
+	return nil
+}
+
+func insertFilename(d *pb.Droplet, filename string) (*pb.Event, error) {
+	dupd := lookupFilename(filename)
+	if dupd != nil {
+		log.Info("file", filename, "already on droplet", dupd.Hostname)
+		log.Info("file", filename, "on new droplet", d.Hostname)
+		log.Info("duplicate disk names (--xml-ignore-disk to ignore)")
+		return nil, errors.New("duplicate disk names")
+	}
+	filebase := filepath.Base(filename)
+	dir := filepath.Dir(filename)
+	for _, disk := range d.Disks {
+		if disk.Filename == filebase {
+			log.Info("already have disk", filename)
+			return nil, nil
+		}
+	}
+	// make a new Add Event
+	e := NewChangeEvent(d, "Add Disk", "", filename)
+
+	// add the disk protobuf entry
+	var disk *pb.Disk
+	disk = new(pb.Disk)
+	disk.Filename = filebase
+	disk.Filepath = dir
+	d.Disks = append(d.Disks, disk)
+	log.Info("New filename", filebase, dir)
+	return e, nil
+}
+
 func checkUniqueFilenames() bool {
 	var ok bool = true
 	var disks map[string]string