TestMu Conference is Back! Future of Testing + AIRegister for Free

How to use init method of gce Package

Best Syzkaller code snippet using gce.init

cloud_linux.go

Source:cloud_linux.go

1// Copyright 2015 The Vanadium Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4// +build linux,!android5// Package cloudvm provides functions to test whether the current process is6// running on Google Compute Engine or Amazon Web Services, and to extract7// settings from this environment.8package cloudvm9import (10	"fmt"11	"io/ioutil"12	"net"13	"net/http"14	"sync"15	"time"16	"v.io/x/ref/lib/stats"17)18// This URL returns the external IP address assigned to the local GCE instance.19// If a HTTP GET request fails for any reason, this is not a GCE instance. If20// the result of the GET request doesn't contain a "Metadata-Flavor: Google"21// header, it is also not a GCE instance. The body of the document contains the22// external IP address, if present. Otherwise, the body is empty.23// See https://developers.google.com/compute/docs/metadata for details.24const gceUrl = "http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/access-configs/0/external-ip"25const awsUrl = "http://169.254.169.254/latest/meta-data/public-ipv4"26var (27	onceGCE    sync.Once28	onceAWS    sync.Once29	onGCE      bool30	onAWS      bool31	externalIP net.IP32)33func InitGCE(timeout time.Duration, cancel <-chan struct{}) {34	onceGCE.Do(func() {35		if onAWS {36			return37		}38		gceTest(timeout, cancel)39	})40}41func InitAWS(timeout time.Duration, cancel <-chan struct{}) {42	onceAWS.Do(func() {43		if onGCE {44			return45		}46		awsTest(timeout, cancel)47	})48}49func RunningOnGCE() bool {50	return onGCE51}52func RunningOnAWS() bool {53	return onAWS54}55// ExternalIPAddress returns the external IP address of this Google Compute56// Engine or AWS instance, or nil if there is none. Must be called after57// InitGCE / InitAWS.58func ExternalIPAddress() net.IP {59	return externalIP60}61func gceTest(timeout time.Duration, cancel <-chan struct{}) {62	var err error63	if externalIP, err = gceGetIP(gceUrl, timeout, cancel); err != nil {64		return65	}66	vars := []struct {67		name, url string68	}{69		{"system/gce/project-id", "http://metadata.google.internal/computeMetadata/v1/project/project-id"},70		{"system/gce/zone", "http://metadata.google.internal/computeMetadata/v1/instance/zone"},71	}72	for _, v := range vars {73		body, err := gceGetMeta(v.url, timeout, cancel)74		if err != nil || body == "" {75			return76		}77		stats.NewString(v.name).Set(body)78	}79	onGCE = true80}81func gceGetIP(url string, timeout time.Duration, cancel <-chan struct{}) (net.IP, error) {82	body, err := gceGetMeta(url, timeout, cancel)83	if err != nil {84		return nil, err85	}86	return net.ParseIP(body), nil87}88func gceGetMeta(url string, timeout time.Duration, cancel <-chan struct{}) (string, error) {89	client := &http.Client{Timeout: timeout}90	req, err := http.NewRequest("GET", url, nil)91	if err != nil {92		return "", err93	}94	req.Cancel = cancel95	req.Header.Add("Metadata-Flavor", "Google")96	resp, err := client.Do(req)97	if err != nil {98		return "", err99	}100	defer resp.Body.Close()101	if resp.StatusCode != 200 {102		return "", fmt.Errorf("http error: %d", resp.StatusCode)103	}104	if flavor := resp.Header["Metadata-Flavor"]; len(flavor) != 1 || flavor[0] != "Google" {105		return "", fmt.Errorf("unexpected http header: %q", flavor)106	}107	body, err := ioutil.ReadAll(resp.Body)108	if err != nil {109		return "", err110	}111	return string(body), nil112}113func awsTest(timeout time.Duration, cancel <-chan struct{}) {114	client := &http.Client{Timeout: timeout}115	req, err := http.NewRequest("GET", awsUrl, nil)116	if err != nil {117		return118	}119	req.Cancel = cancel120	resp, err := client.Do(req)121	if err != nil {122		return123	}124	defer resp.Body.Close()125	if resp.StatusCode != 200 {126		return127	}128	if server := resp.Header["Server"]; len(server) != 1 || server[0] != "EC2ws" {129		return130	}131	body, err := ioutil.ReadAll(resp.Body)132	if err != nil {133		return134	}135	externalIP = net.ParseIP(string(body))136	onAWS = true137}...

in_tree_volumes.go

Source:in_tree_volumes.go

...67	}68	if gceEnabled {69		framework.Logf("Enabled gcepd and windows-gcepd in-tree volume drivers")70	}71	for _, initDriver := range testDrivers {72		curDriver := initDriver()73		ginkgo.Context(storageframework.GetDriverNameWithFeatureTags(curDriver), func() {74			storageframework.DefineTestSuites(curDriver, testsuites.BaseSuites)75		})76	}77})...

cluster.go

Source:cluster.go

...15	clusterOnce     sync.Once16	clusterName     string17	clusterLocation string18)19func initClusterName(ctx context.Context) {20	if !gce.OnGCE() {21		return22	}23	logger := log.FromContext(ctx)24	logger.Debug("trying to get cluster name from metadata")25	var err error26	clusterName, err = gce.InstanceAttributeValue("cluster-name")27	if err != nil {28		logger.Errorf("failed to get cluster-name on gce: %v", err)29	} else {30		clusterName = strings.TrimSpace(clusterName)31		logger.Infof("cluster name: %s", clusterName)32	}33	clusterLocation, err = gce.InstanceAttributeValue("cluster-location")34	if err != nil {35		logger.Errorf("failed to get cluster-location on gce: %v", err)36	} else {37		clusterLocation = strings.TrimSpace(clusterLocation)38		logger.Infof("cluster location: %s", clusterLocation)39	}40}41// ClusterName returns cluster name where server is running on.42func ClusterName(ctx context.Context) string {43	clusterOnce.Do(func() {44		initClusterName(ctx)45	})46	return clusterName47}48var (49	projectOnce sync.Once50	projectID   string51)52// ProjectID returns current project id.53func ProjectID(ctx context.Context) string {54	projectOnce.Do(func() {55		if !gce.OnGCE() {56			return57		}58		logger := log.FromContext(ctx)59		var err error60		projectID, err = gce.ProjectID()61		if err != nil {62			logger.Errorf("failed to get project id: %v", err)63		}64	})65	return projectID66}67// serverName returns service name, prefixed by cluster name if any.68func serverName(ctx context.Context, name string) string {69	clusterName := ClusterName(ctx)70	if clusterName != "" {71		name = path.Join(clusterName, name)72	}73	return name74}75var (76	hostnameOnce sync.Once77	hostname     string78)79func initHostname(ctx context.Context) {80	logger := log.FromContext(ctx)81	var err error82	hostname, err = os.Hostname()83	if err != nil {84		logger.Errorf("hostname: %v", err)85		hostname = os.Getenv("HOSTNAME")86	}87	logger.Infof("hostname: %s", hostname)88}89// HostName returns hostname. in k8s, it is podname.90func HostName(ctx context.Context) string {91	hostnameOnce.Do(func() {92		initHostname(ctx)93	})94	return hostname95}...

init

Using AI Code Generation

1import (2type gce struct {3}4func (g *gce) init() {5	fmt.Println("init of gce")6}7type aws struct {8}9func (a *aws) init() {10	fmt.Println("init of aws")11}12var (13func init() {14	gceStorage = &gce{}15	gceStorage.init()16	awsStorage = &aws{}17	awsStorage.init()18}19import (20func main() {21}22import (23func main() {24}

init

Using AI Code Generation

1import (2func main() {3    gce := gce.Gce{}4    gce.Init()5    fmt.Println(gce.Name)6}7import (8func init() {9    gce.Init()10}11func main() {12    fmt.Println(gce.Name)13}14import (15func init() {16    gce.Init()17}18func main() {19    fmt.Println(gce.Name)20}

init

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, 世界")4    gce.Init()5}6In the above example, we have created a package gce and a file gce.go in that package. We have defined a method Init() in

init

Using AI Code Generation

1import (  2func main() {  3    fmt.Println(gce.Name)4}5[Image] [golangbyexample.com](www.golangbyexample.com/golang...) 6### [Go: init() Method | Go by Example](www.golangbyexample.com/golang...)7[Image] [Go by Example](gobyexample.com/init) 8### [init - Go by Example](gobyexample.com/init)

init

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, playground")4	gce.Run()5}6import "fmt"7func init() {8	fmt.Println("gce init")9}10func Run() {11	fmt.Println("gce run")12}

init

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello world")4    gce.Init()5}6import (7func Init() {8    fmt.Println("Init GCE")9}10I have created a package gce and placed it in my GOPATH. I am trying to import it in a different package, but it is not working. I am getting the following error:11    /usr/lib/go/src/pkg/gce (from $GOROOT)12    /home/username/go/src/gce (from $GOPATH)13import (14func main() {15    fmt.Println("Hello world")16    gce.Init()17}18import (19func Init() {20    fmt.Println("Init GCE")21}22I have created a package gce and placed it in my GOPATH. I am trying to import it in a different package, but it is not working. I am getting the following error:23    /usr/lib/go/src/pkg/gce (from $GOROOT)24    /home/username/go/src/gce (from $GOPATH)25import (26func main() {27    fmt.Println("Hello world")28    gce.Init()29}30import (31func Init() {32    fmt.Println("Init GCE")33}34I have created a package gce and placed it in my GOPATH. I am trying to import it in a different package, but it is not working. I am getting the following error:

init

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, World!")4	fmt.Println("This is a test")5	time.Sleep(10 * time.Second)6}7import (8func main() {9	fmt.Println("Hello, World!")10	fmt.Println("This is a test")11	time.Sleep(10 * time.Second)12}13import (14func main() {15	fmt.Println("Hello, World!")16	fmt.Println("This is a test")17	time.Sleep(10 * time.Second)18}19import (20func main() {21	fmt.Println("Hello, World!")22	fmt.Println("This is a test")23	time.Sleep(10 * time.Second)24}25import (26func main() {27	fmt.Println("Hello, World!")28	fmt.Println("This is a test")29	time.Sleep(10 * time.Second)30}31import (32func main() {33	fmt.Println("Hello, World!")34	fmt.Println("This is a test")35	time.Sleep(10 * time.Second)36}37import (38func main() {39	fmt.Println("Hello, World!")40	fmt.Println("This is a test")41	time.Sleep(10 * time.Second)42}43import (44func main() {45	fmt.Println("Hello, World!")46	fmt.Println("This is a test")47	time.Sleep(10 * time.Second)48}49import (50func main() {51	fmt.Println("Hello, World!")52	fmt.Println("This is a test")53	time.Sleep(

init

Using AI Code Generation

1import (2func main() {3	gce.Init()4	fmt.Println("Hello World")5}6import (7func main() {8	gce.Init()9	fmt.Println("Hello World")10	fmt.Println("Total marks: ", gce.TotalMarks)11}12import (13func main() {14	gce.Init()15	fmt.Println("Hello World")16	fmt.Println("Total marks: ", gce.TotalMarks)17}18import (19func main() {20	gce.Init()21	fmt.Println("Hello World")22	fmt.Println("Total marks: ", gce.TotalMarks)23}24You can also use init() method

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.