func TestImagesList(t *testing.T) {
client, err := clients.NewComputeV2Client()
if err != nil {
t.Fatalf("Unable to create a compute: client: %v", err)
}
allPages, err := images.ListDetail(client, nil).AllPages()
if err != nil {
t.Fatalf("Unable to retrieve images: %v", err)
}
allImages, err := images.ExtractImages(allPages)
if err != nil {
t.Fatalf("Unable to extract image results: %v", err)
}
for _, image := range allImages {
PrintImage(t, image)
}
}
// spawn achieves the aims of Spawn()
func (p *openstackp) spawn(resources *Resources, osPrefix string, flavorID string, externalIP bool, postCreationScript []byte) (serverID string, serverIP string, adminPass string, err error) {
// get available images, pick the one that matches desired OS
// *** rackspace API lets you filter on eg. os_distro=ubuntu and os_version=12.04; can we do the same here?
pager := images.ListDetail(p.computeClient, images.ListOpts{Status: "ACTIVE"})
var imageID string
err = pager.EachPage(func(page pagination.Page) (bool, error) {
imageList, err := images.ExtractImages(page)
if err != nil {
return false, err
}
for _, i := range imageList {
if i.Progress == 100 && strings.HasPrefix(i.Name, osPrefix) {
imageID = i.ID
return false, nil
}
}
return true, nil
})
if err != nil {
return
}
// create the server with a unique name
server, err := servers.Create(p.computeClient, keypairs.CreateOptsExt{
CreateOptsBuilder: servers.CreateOpts{
Name: uniqueResourceName(resources.ResourceName),
FlavorRef: flavorID,
ImageRef: imageID,
SecurityGroups: []string{p.securityGroup},
Networks: []servers.Network{{UUID: p.networkUUID}},
UserData: postCreationScript,
// Metadata map[string]string
},
KeyName: resources.ResourceName,
}).Extract()
if err != nil {
return
}
// wait for it to come up; servers.WaitForStatus has a timeout, but it
// doesn't always work, so we roll our own
waitForActive := make(chan error)
go func() {
timeout := time.After(60 * time.Second)
ticker := time.NewTicker(1 * time.Second)
for {
select {
case <-ticker.C:
current, err := servers.Get(p.computeClient, server.ID).Extract()
if err != nil {
ticker.Stop()
waitForActive <- err
return
}
if current.Status == "ACTIVE" {
ticker.Stop()
waitForActive <- nil
return
}
if current.Status == "ERROR" {
ticker.Stop()
waitForActive <- errors.New("there was an error in bringing up the new server")
return
}
continue
case <-timeout:
ticker.Stop()
waitForActive <- errors.New("timed out waiting for server to become ACTIVE")
return
}
}
}()
err = <-waitForActive
if err != nil {
// since we're going to return an error that we failed to spawn, try and
// delete the bad server in case it is still there
servers.Delete(p.computeClient, server.ID)
return
}
// *** NB. it can still take some number of seconds before I can ssh to it
serverID = server.ID
adminPass = server.AdminPass
// get the servers IP; if we error for any reason we'll delete the server
// first, because without an IP it's useless
if externalIP {
// give it a floating ip
var floatingIP string
floatingIP, err = p.getAvailableFloatingIP()
if err != nil {
p.destroyServer(serverID)
return
}
// associate floating ip with server *** we have a race condition
// between finding/creating free floating IP above, and using it here
err = floatingips.AssociateInstance(p.computeClient, serverID, floatingips.AssociateOpts{
FloatingIP: floatingIP,
}).ExtractErr()
if err != nil {
p.destroyServer(serverID)
return
}
serverIP = floatingIP
} else {
// find its auto-assigned internal ip *** there must be a better way of
// doing this...
allNetworkAddressPages, serr := servers.ListAddressesByNetwork(p.computeClient, serverID, p.networkName).AllPages()
if serr != nil {
p.destroyServer(serverID)
err = serr
return
}
allNetworkAddresses, serr := servers.ExtractNetworkAddresses(allNetworkAddressPages)
if serr != nil {
p.destroyServer(serverID)
err = serr
return
}
for _, address := range allNetworkAddresses {
if address.Version == 4 && strings.HasPrefix(address.Address, "192.168") {
serverIP = address.Address
break
}
}
}
return
}
func TestListImages(t *testing.T) {
th.SetupHTTP()
defer th.TeardownHTTP()
th.Mux.HandleFunc("/images/detail", func(w http.ResponseWriter, r *http.Request) {
th.TestMethod(t, r, "GET")
th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
w.Header().Add("Content-Type", "application/json")
r.ParseForm()
marker := r.Form.Get("marker")
switch marker {
case "":
fmt.Fprintf(w, `
{
"images": [
{
"status": "ACTIVE",
"updated": "2014-09-23T12:54:56Z",
"id": "f3e4a95d-1f4f-4989-97ce-f3a1fb8c04d7",
"OS-EXT-IMG-SIZE:size": 476704768,
"name": "F17-x86_64-cfntools",
"created": "2014-09-23T12:54:52Z",
"minDisk": 0,
"progress": 100,
"minRam": 0
},
{
"status": "ACTIVE",
"updated": "2014-09-23T12:51:43Z",
"id": "f90f6034-2570-4974-8351-6b49732ef2eb",
"OS-EXT-IMG-SIZE:size": 13167616,
"name": "cirros-0.3.2-x86_64-disk",
"created": "2014-09-23T12:51:42Z",
"minDisk": 0,
"progress": 100,
"minRam": 0
}
]
}
`)
case "2":
fmt.Fprintf(w, `{ "images": [] }`)
default:
t.Fatalf("Unexpected marker: [%s]", marker)
}
})
pages := 0
options := &images.ListOpts{Limit: 2}
err := images.ListDetail(fake.ServiceClient(), options).EachPage(func(page pagination.Page) (bool, error) {
pages++
actual, err := images.ExtractImages(page)
if err != nil {
return false, err
}
expected := []images.Image{
{
ID: "f3e4a95d-1f4f-4989-97ce-f3a1fb8c04d7",
Name: "F17-x86_64-cfntools",
Created: "2014-09-23T12:54:52Z",
Updated: "2014-09-23T12:54:56Z",
MinDisk: 0,
MinRAM: 0,
Progress: 100,
Status: "ACTIVE",
},
{
ID: "f90f6034-2570-4974-8351-6b49732ef2eb",
Name: "cirros-0.3.2-x86_64-disk",
Created: "2014-09-23T12:51:42Z",
Updated: "2014-09-23T12:51:43Z",
MinDisk: 0,
MinRAM: 0,
Progress: 100,
Status: "ACTIVE",
},
}
if !reflect.DeepEqual(expected, actual) {
t.Errorf("Unexpected page contents: expected %#v, got %#v", expected, actual)
}
return false, nil
})
if err != nil {
t.Fatalf("EachPage error: %v", err)
}
if pages != 1 {
t.Errorf("Expected one page, got %d", pages)
}
}