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) }