func getServerByName(client *gophercloud.ServiceClient, name types.NodeName) (*servers.Server, error) {
opts := servers.ListOpts{
Name: fmt.Sprintf("^%s$", regexp.QuoteMeta(mapNodeNameToServerName(name))),
Status: "ACTIVE",
}
pager := servers.List(client, opts)
serverList := make([]servers.Server, 0, 1)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
s, err := servers.ExtractServers(page)
if err != nil {
return false, err
}
serverList = append(serverList, s...)
if len(serverList) > 1 {
return false, ErrMultipleResults
}
return true, nil
})
if err != nil {
return nil, err
}
if len(serverList) == 0 {
return nil, ErrNotFound
} else if len(serverList) > 1 {
return nil, ErrMultipleResults
}
return &serverList[0], nil
}
func (i *Instances) List(name_filter string) ([]string, error) {
glog.V(4).Infof("openstack List(%v) called", name_filter)
opts := servers.ListOpts{
Name: name_filter,
Status: "ACTIVE",
}
pager := servers.List(i.compute, opts)
ret := make([]string, 0)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
sList, err := servers.ExtractServers(page)
if err != nil {
return false, err
}
for _, server := range sList {
ret = append(ret, server.Name)
}
return true, nil
})
if err != nil {
return nil, err
}
glog.V(3).Infof("Found %v instances matching %v: %v",
len(ret), name_filter, ret)
return ret, nil
}
func TestListServers(t *testing.T) {
client, err := newClient()
if err != nil {
t.Fatalf("Unable to create a compute client: %v", err)
}
t.Logf("ID\tRegion\tName\tStatus\tIPv4\tIPv6")
pager := servers.List(client, servers.ListOpts{})
count, pages := 0, 0
pager.EachPage(func(page pagination.Page) (bool, error) {
pages++
t.Logf("---")
servers, err := servers.ExtractServers(page)
if err != nil {
return false, err
}
for _, s := range servers {
t.Logf("%s\t%s\t%s\t%s\t%s\t\n", s.ID, s.Name, s.Status, s.AccessIPv4, s.AccessIPv6)
count++
}
return true, nil
})
t.Logf("--------\n%d servers listed on %d pages.\n", count, pages)
}
func findServer(t *testing.T, client *gophercloud.ServiceClient) (string, bool) {
var serverID string
var needsDeletion bool
err := servers.List(client, nil).EachPage(func(page pagination.Page) (bool, error) {
sList, err := servers.ExtractServers(page)
th.AssertNoErr(t, err)
for _, s := range sList {
serverID = s.ID
needsDeletion = false
t.Logf("Found an existing server: ID [%s]", serverID)
break
}
return true, nil
})
th.AssertNoErr(t, err)
if serverID == "" {
t.Log("No server found, creating one")
choices, err := ComputeChoicesFromEnv()
th.AssertNoErr(t, err)
opts := &servers.CreateOpts{
Name: tools.RandomString("secgroup_test_", 5),
ImageRef: choices.ImageID,
FlavorRef: choices.FlavorID,
}
s, err := servers.Create(client, opts).Extract()
th.AssertNoErr(t, err)
serverID = s.ID
t.Logf("Created server %s, waiting for it to build", s.ID)
err = servers.WaitForStatus(client, serverID, "ACTIVE", 300)
th.AssertNoErr(t, err)
needsDeletion = true
}
return serverID, needsDeletion
}
func foreachServer(client *gophercloud.ServiceClient, opts servers.ListOptsBuilder, handler func(*servers.Server) (bool, error)) error {
pager := servers.List(client, opts)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
s, err := servers.ExtractServers(page)
if err != nil {
return false, err
}
for _, server := range s {
ok, err := handler(&server)
if !ok || err != nil {
return false, err
}
}
return true, nil
})
return err
}
func main() {
// step-1
var authUsername string = "your_auth_username"
var authPassword string = "your_auth_password"
var authUrl string = "http://controller:5000"
var projectName string = "your_project_id"
var regionName string = "your_region_name"
authOpts := gophercloud.AuthOptions{
IdentityEndpoint: authUrl,
Username: authUsername,
Password: authPassword,
TenantID: projectName,
}
provider, _ := openstack.AuthenticatedClient(authOpts)
client, _ := openstack.NewComputeV2(provider, gophercloud.EndpointOpts{
Region: regionName,
})
// step-2
pager := images.ListDetail(client, images.ListOpts{})
page, _ := pager.AllPages()
imageList, _ := images.ExtractImages(page)
fmt.Println(imageList)
// step-3
pager = flavors.ListDetail(client, flavors.ListOpts{})
page, _ = pager.AllPages()
flavorList, _ := flavors.ExtractFlavors(page)
fmt.Println(flavorList)
// step-4
imageID := "74e6d1ec-9a08-444c-8518-4f232446386d"
image, _ := images.Get(client, imageID).Extract()
fmt.Println(image)
// step-5
flavorID := "1"
flavor, _ := flavors.Get(client, flavorID).Extract()
fmt.Println(flavor)
// step-6
instanceName := "testing"
testingInstance, _ := servers.Create(client, servers.CreateOpts{
Name: instanceName,
ImageRef: imageID,
FlavorRef: flavorID,
}).Extract()
fmt.Println(testingInstance)
// step-7
pager = servers.List(client, servers.ListOpts{})
page, _ = pager.AllPages()
serverList, _ := servers.ExtractServers(page)
fmt.Println(serverList)
// step-8
servers.Delete(client, testingInstance.ID)
// step-9
fmt.Println("Checking for existing SSH key pair...")
keyPairName := "demokey"
pubKeyFile := "~/.ssh/id_rsa.pub"
keyPairExists := false
pager = keypairs.List(client)
page, _ = pager.AllPages()
keypairList, _ := keypairs.ExtractKeyPairs(page)
for _, k := range keypairList {
if k.Name == keyPairName {
keyPairExists = true
break
}
}
if keyPairExists {
fmt.Println("Keypair " + keyPairName + " already exists. Skipping import.")
} else {
fmt.Println("adding keypair...")
bs, _ := ioutil.ReadFile(pubKeyFile)
keypairs.Create(client, keypairs.CreateOpts{
Name: keyPairName,
PublicKey: string(bs),
}).Extract()
}
pager = keypairs.List(client)
page, _ = pager.AllPages()
keypairList, _ = keypairs.ExtractKeyPairs(page)
fmt.Println(keypairList)
// step-10
fmt.Println("Checking for existing security group...")
var allInOneSecurityGroup secgroups.SecurityGroup
securityGroupName := "all-in-one"
securityGroupExists := false
pager = secgroups.List(client)
page, _ = pager.AllPages()
secgroupList, _ := secgroups.ExtractSecurityGroups(page)
for _, secGroup := range secgroupList {
if secGroup.Name == securityGroupName {
allInOneSecurityGroup = secGroup
securityGroupExists = true
break
}
}
if securityGroupExists {
fmt.Println("Security Group " + allInOneSecurityGroup.Name + " already exists. Skipping creation.")
} else {
allInOneSecurityGroup, _ := secgroups.Create(client, secgroups.CreateOpts{
Name: securityGroupName,
Description: "network access for all-in-one application.",
}).Extract()
secgroups.CreateRule(client, secgroups.CreateRuleOpts{
ParentGroupID: allInOneSecurityGroup.ID,
FromPort: 80,
ToPort: 80,
IPProtocol: "TCP",
CIDR: "0.0.0.0/0",
}).Extract()
secgroups.CreateRule(client, secgroups.CreateRuleOpts{
ParentGroupID: allInOneSecurityGroup.ID,
FromPort: 22,
ToPort: 22,
IPProtocol: "TCP",
CIDR: "0.0.0.0/0",
}).Extract()
}
pager = secgroups.List(client)
page, _ = pager.AllPages()
secgroupList, _ = secgroups.ExtractSecurityGroups(page)
fmt.Println(secgroupList)
// step-11
userData := `#!/usr/bin/env bash
curl -L -s https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh | bash -s -- \
-i faafo -i messaging -r api -r worker -r demo
`
// step-12
fmt.Println("Checking for existing instance...")
instanceName = "all-in-one"
instanceExists := false
pager = servers.List(client, servers.ListOpts{})
page, _ = pager.AllPages()
serverList, _ = servers.ExtractServers(page)
for _, s := range serverList {
if s.Name == instanceName {
testingInstance = &s
instanceExists = true
break
}
}
if instanceExists {
fmt.Println("Instance " + testingInstance.Name + " already exists. Skipping creation.")
} else {
opts := servers.CreateOpts{
Name: instanceName,
ImageRef: image.ID,
FlavorRef: flavor.ID,
SecurityGroups: []string{securityGroupName},
UserData: []byte(userData),
}
testingInstance, _ = servers.Create(client, keypairs.CreateOptsExt{
CreateOptsBuilder: opts,
KeyName: keyPairName,
}).Extract()
}
servers.WaitForStatus(client, testingInstance.ID, "ACTIVE", 300)
pager = servers.List(client, servers.ListOpts{})
page, _ = pager.AllPages()
serverList, _ = servers.ExtractServers(page)
fmt.Println(serverList)
// step-13
var privateIP string
for t, addrs := range testingInstance.Addresses {
if t != "private" || len(privateIP) != 0 {
continue
}
addrs, ok := addrs.([]interface{})
if !ok {
continue
}
for _, addr := range addrs {
a, ok := addr.(map[string]interface{})
if !ok || a["version"].(float64) != 4 {
continue
}
ip, ok := a["addr"].(string)
if ok && len(ip) != 0 {
privateIP = ip
fmt.Println("Private IP found: " + privateIP)
break
}
}
}
// step-14
var publicIP string
for t, addrs := range testingInstance.Addresses {
if t != "public" || len(publicIP) != 0 {
continue
}
addrs, ok := addrs.([]interface{})
if !ok {
continue
}
for _, addr := range addrs {
a, ok := addr.(map[string]interface{})
if !ok || a["version"].(float64) != 4 {
continue
}
ip, ok := a["addr"].(string)
if ok && len(ip) != 0 {
publicIP = ip
fmt.Println("Public IP found: " + publicIP)
break
}
}
}
// step-15
fmt.Println("Checking for unused Floating IP...")
var unusedFloatingIP string
pager = floatingip.List(client)
page, _ = pager.AllPages()
floatingIPList, _ := floatingip.ExtractFloatingIPs(page)
for _, ip := range floatingIPList {
if ip.InstanceID == "" {
unusedFloatingIP = ip.IP
break
}
}
networkClient, _ := openstack.NewNetworkV2(provider, gophercloud.EndpointOpts{
Region: regionName,
})
pager = networks.List(networkClient, networks.ListOpts{})
page, _ = pager.AllPages()
poolList, _ := external.ExtractList(page)
for _, pool := range poolList {
if len(unusedFloatingIP) != 0 || !pool.External {
continue
}
fmt.Println("Allocating new Floating IP from pool: " + pool.Name)
f, _ := floatingip.Create(client, floatingip.CreateOpts{Pool: pool.Name}).Extract()
unusedFloatingIP = f.IP
}
// step-16
if len(publicIP) != 0 {
fmt.Println("Instance " + testingInstance.Name + " already has a public ip. Skipping attachment.")
} else {
floatingip.Associate(client, testingInstance.ID, unusedFloatingIP)
}
// step-17
var actualIPAddress string
if len(publicIP) != 0 {
actualIPAddress = publicIP
} else if len(unusedFloatingIP) != 0 {
actualIPAddress = unusedFloatingIP
} else {
actualIPAddress = privateIP
}
fmt.Println("The Fractals app will be deployed to http://" + actualIPAddress)
}
func Run() error {
var configPath string
var commitsToFile bool
var target string
var verbose bool
var showsVersion bool
var randomDelay int
flag.BoolVar(&commitsToFile, "w", false, "Write to file")
flag.StringVar(&target, "t", "/etc/hosts", "Target file to write hosts")
flag.BoolVar(&verbose, "V", false, "Verbose mode")
flag.StringVar(&configPath, "c", "/etc/monkfish.ini", "Config path")
flag.BoolVar(&showsVersion, "version", false, "Just show version and quit")
flag.IntVar(&randomDelay, "random-delay", 0, "Random delay before to access OpenStack API, in second")
flag.Parse()
if showsVersion {
showVersion()
}
loggerf := newLoggerf(verbose)
conf := &MonkConf{}
if err := conf.Parse(configPath); err != nil {
return err
}
if randomDelay > 0 {
hostname, _ := os.Hostname()
ha := hash.Checksum([]byte(hostname))
rand.Seed(time.Now().UnixNano() + int64(ha))
delay := rand.Intn(randomDelay)
loggerf("Sleeping in %d seconds...", delay)
time.Sleep(time.Duration(delay) * time.Second)
}
auth, err := openstack.AuthenticatedClient(gophercloud.AuthOptions{
IdentityEndpoint: conf.authUrl,
Username: conf.username,
Password: conf.password,
TenantName: conf.tenantName,
})
if err != nil {
return err
}
cli, err := openstack.NewComputeV2(auth, gophercloud.EndpointOpts{Region: conf.region})
if err != nil {
return err
}
res, err := servers.List(cli, &servers.ListOpts{Status: "ACTIVE"}).AllPages()
if err != nil {
return err
}
svs, err := servers.ExtractServers(res)
if err != nil {
return err
}
var targetIo io.Writer
if commitsToFile {
targetIo, err = ioutil.TempFile("", "monkfish-work--")
if err != nil {
return err
}
} else {
targetIo = os.Stdout
}
src, err := os.Open("/etc/hosts.base")
if err == nil {
data, _ := ioutil.ReadAll(src)
targetIo.Write(data)
targetIo.Write([]byte("\n"))
}
for _, i := range svs {
if i.Name == "" {
loggerf("skip: [%s]%s\n", i.ID, i.Name)
continue
}
loggerf("name: %s\n", i.Name)
var name string
if conf.useOnlyHostname {
name = strings.Split(i.Name, ".")[0]
} else {
name = i.Name
}
if wan := findWanIP(i.Addresses); wan != "" {
fmt.Fprintf(
targetIo,
"%s\t\t%s.%s\n",
wan,
name,
conf.domain,
)
}
if lan := findLanIP(i.Addresses, conf.lanIPPrefix); lan != "" {
fmt.Fprintf(
targetIo,
"%s\t\t%s.%s\n",
lan,
name,
conf.internalDomain,
)
}
}
if commitsToFile {
if f, ok := targetIo.(*os.File); ok {
tmppath := f.Name()
f.Close()
os.Chmod(tmppath, 0644)
loggerf("Rename %s to %s\n", tmppath, target)
err = os.Rename(tmppath, target)
if err != nil {
return err
}
defer os.Remove(tmppath)
}
}
loggerf("Complete!\n")
return nil
}
// ExtractServers interprets the results of a single page from a List() call, producing a slice of Server entities.
func ExtractServers(page pagination.Page) ([]os.Server, error) {
return os.ExtractServers(page)
}