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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

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