How to use Remove method of fsext Package

Best K6 code snippet using fsext.Remove

archive.go

Source:archive.go Github

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1/*2 *3 * k6 - a next-generation load testing tool4 * Copyright (C) 2016 Load Impact5 *6 * This program is free software: you can redistribute it and/or modify7 * it under the terms of the GNU Affero General Public License as8 * published by the Free Software Foundation, either version 3 of the9 * License, or (at your option) any later version.10 *11 * This program is distributed in the hope that it will be useful,12 * but WITHOUT ANY WARRANTY; without even the implied warranty of13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the14 * GNU Affero General Public License for more details.15 *16 * You should have received a copy of the GNU Affero General Public License17 * along with this program. If not, see <http://www.gnu.org/licenses/>.18 *19 */20package lib21import (22 "archive/tar"23 "bytes"24 "encoding/json"25 "fmt"26 "io"27 "io/ioutil"28 "net/url"29 "os"30 "path"31 "path/filepath"32 "regexp"33 "sort"34 "strings"35 "time"36 "github.com/spf13/afero"37 "go.k6.io/k6/lib/fsext"38 "go.k6.io/k6/loader"39)40//nolint: gochecknoglobals, lll41var (42 volumeRE = regexp.MustCompile(`^[/\\]?([a-zA-Z]):(.*)`)43 sharedRE = regexp.MustCompile(`^\\\\([^\\]+)`) // matches a shared folder in Windows before backslack replacement. i.e \\VMBOXSVR\k6\script.js44 homeDirRE = regexp.MustCompile(`(?i)^(/[a-zA-Z])?/(Users|home|Documents and Settings)/(?:[^/]+)`)45)46// NormalizeAndAnonymizePath Normalizes (to use a / path separator) and anonymizes a file path, by scrubbing usernames from home directories.47func NormalizeAndAnonymizePath(path string) string {48 path = filepath.Clean(path)49 p := volumeRE.ReplaceAllString(path, `/$1$2`)50 p = sharedRE.ReplaceAllString(p, `/nobody`)51 p = strings.Replace(p, "\\", "/", -1)52 return homeDirRE.ReplaceAllString(p, `$1/$2/nobody`)53}54func newNormalizedFs(fs afero.Fs) afero.Fs {55 return fsext.NewChangePathFs(fs, fsext.ChangePathFunc(func(name string) (string, error) {56 return NormalizeAndAnonymizePath(name), nil57 }))58}59// An Archive is a rollup of all resources and options needed to reproduce a test identically elsewhere.60type Archive struct {61 // The runner to use, eg. "js".62 Type string `json:"type"`63 // Options to use.64 Options Options `json:"options"`65 // TODO: rewrite the encoding, decoding of json to use another type with only the fields it66 // needs in order to remove Filename and Pwd from this67 // Filename and contents of the main file being executed.68 Filename string `json:"filename"` // only for json69 FilenameURL *url.URL `json:"-"`70 Data []byte `json:"-"`71 // Working directory for resolving relative paths.72 Pwd string `json:"pwd"` // only for json73 PwdURL *url.URL `json:"-"`74 Filesystems map[string]afero.Fs `json:"-"`75 // Environment variables76 Env map[string]string `json:"env"`77 CompatibilityMode string `json:"compatibilityMode"`78 K6Version string `json:"k6version"`79 Goos string `json:"goos"`80}81func (arc *Archive) getFs(name string) afero.Fs {82 fs, ok := arc.Filesystems[name]83 if !ok {84 fs = afero.NewMemMapFs()85 if name == "file" {86 fs = newNormalizedFs(fs)87 }88 arc.Filesystems[name] = fs89 }90 return fs91}92func (arc *Archive) loadMetadataJSON(data []byte) (err error) {93 if err = json.Unmarshal(data, &arc); err != nil {94 return err95 }96 // Path separator normalization for older archives (<=0.20.0)97 if arc.K6Version == "" {98 arc.Filename = NormalizeAndAnonymizePath(arc.Filename)99 arc.Pwd = NormalizeAndAnonymizePath(arc.Pwd)100 }101 arc.PwdURL, err = loader.Resolve(&url.URL{Scheme: "file", Path: "/"}, arc.Pwd)102 if err != nil {103 return err104 }105 arc.FilenameURL, err = loader.Resolve(&url.URL{Scheme: "file", Path: "/"}, arc.Filename)106 if err != nil {107 return err108 }109 return nil110}111// ReadArchive reads an archive created by Archive.Write from a reader.112func ReadArchive(in io.Reader) (*Archive, error) {113 r := tar.NewReader(in)114 arc := &Archive{Filesystems: make(map[string]afero.Fs, 2)}115 // initialize both fses116 _ = arc.getFs("https")117 _ = arc.getFs("file")118 for {119 hdr, err := r.Next()120 if err != nil {121 if err == io.EOF {122 break123 }124 return nil, err125 }126 if hdr.Typeflag != tar.TypeReg && hdr.Typeflag != tar.TypeRegA {127 continue128 }129 data, err := ioutil.ReadAll(r)130 if err != nil {131 return nil, err132 }133 switch hdr.Name {134 case "metadata.json":135 if err = arc.loadMetadataJSON(data); err != nil {136 return nil, err137 }138 continue139 case "data":140 arc.Data = data141 continue142 }143 // Path separator normalization for older archives (<=0.20.0)144 normPath := NormalizeAndAnonymizePath(hdr.Name)145 idx := strings.IndexRune(normPath, '/')146 if idx == -1 {147 continue148 }149 pfx := normPath[:idx]150 name := normPath[idx:]151 switch pfx {152 case "files", "scripts": // old archives153 // in old archives (pre 0.25.0) names without "_" at the beginning were https, the ones with "_" are local files154 pfx = "https"155 if len(name) >= 2 && name[0:2] == "/_" {156 pfx = "file"157 name = name[2:]158 }159 fallthrough160 case "https", "file":161 fs := arc.getFs(pfx)162 name = filepath.FromSlash(name)163 err = afero.WriteFile(fs, name, data, os.FileMode(hdr.Mode))164 if err != nil {165 return nil, err166 }167 err = fs.Chtimes(name, hdr.AccessTime, hdr.ModTime)168 if err != nil {169 return nil, err170 }171 default:172 return nil, fmt.Errorf("unknown file prefix `%s` for file `%s`", pfx, normPath)173 }174 }175 scheme, pathOnFs := getURLPathOnFs(arc.FilenameURL)176 var err error177 pathOnFs, err = url.PathUnescape(pathOnFs)178 if err != nil {179 return nil, err180 }181 err = afero.WriteFile(arc.getFs(scheme), pathOnFs, arc.Data, 0o644) // TODO fix the mode ?182 if err != nil {183 return nil, err184 }185 return arc, nil186}187func normalizeAndAnonymizeURL(u *url.URL) {188 if u.Scheme == "file" {189 u.Path = NormalizeAndAnonymizePath(u.Path)190 }191}192func getURLPathOnFs(u *url.URL) (scheme string, pathOnFs string) {193 scheme = "https"194 switch {195 case u.Opaque != "":196 return scheme, "/" + u.Opaque197 case u.Scheme == "":198 return scheme, path.Clean(u.String()[len("//"):])199 default:200 scheme = u.Scheme201 }202 return scheme, path.Clean(u.String()[len(u.Scheme)+len(":/"):])203}204func getURLtoString(u *url.URL) string {205 if u.Opaque == "" && u.Scheme == "" {206 return u.String()[len("//"):] // https url without a scheme207 }208 return u.String()209}210// Write serialises the archive to a writer.211//212// The format should be treated as opaque; currently it is simply a TAR rollup, but this may213// change. If it does change, ReadArchive must be able to handle all previous formats as well as214// the current one.215func (arc *Archive) Write(out io.Writer) error {216 w := tar.NewWriter(out)217 now := time.Now()218 metaArc := *arc219 normalizeAndAnonymizeURL(metaArc.FilenameURL)220 normalizeAndAnonymizeURL(metaArc.PwdURL)221 metaArc.Filename = getURLtoString(metaArc.FilenameURL)222 metaArc.Pwd = getURLtoString(metaArc.PwdURL)223 actualDataPath, err := url.PathUnescape(path.Join(getURLPathOnFs(metaArc.FilenameURL)))224 if err != nil {225 return err226 }227 var madeLinkToData bool228 metadata, err := metaArc.json()229 if err != nil {230 return err231 }232 _ = w.WriteHeader(&tar.Header{233 Name: "metadata.json",234 Mode: 0o644,235 Size: int64(len(metadata)),236 ModTime: now,237 Typeflag: tar.TypeReg,238 })239 if _, err = w.Write(metadata); err != nil {240 return err241 }242 _ = w.WriteHeader(&tar.Header{243 Name: "data",244 Mode: 0o644,245 Size: int64(len(arc.Data)),246 ModTime: now,247 Typeflag: tar.TypeReg,248 })249 if _, err = w.Write(arc.Data); err != nil {250 return err251 }252 for _, name := range [...]string{"file", "https"} {253 filesystem, ok := arc.Filesystems[name]254 if !ok {255 continue256 }257 if cachedfs, ok := filesystem.(fsext.CacheLayerGetter); ok {258 filesystem = cachedfs.GetCachingFs()259 }260 // A couple of things going on here:261 // - You can't just create file entries, you need to create directory entries too.262 // Figure out which directories are in use here.263 // - We want archives to be comparable by hash, which means the entries need to be written264 // in the same order every time. Go maps are shuffled, so we need to sort lists of keys.265 // - We don't want to leak private information (eg. usernames) in archives, so make sure to266 // anonymize paths before stuffing them in a shareable archive.267 foundDirs := make(map[string]bool)268 paths := make([]string, 0, 10)269 infos := make(map[string]os.FileInfo) // ... fix this ?270 files := make(map[string][]byte)271 walkFunc := filepath.WalkFunc(func(filePath string, info os.FileInfo, err error) error {272 if err != nil {273 return err274 }275 normalizedPath := NormalizeAndAnonymizePath(filePath)276 infos[normalizedPath] = info277 if info.IsDir() {278 foundDirs[normalizedPath] = true279 return nil280 }281 paths = append(paths, normalizedPath)282 files[normalizedPath], err = afero.ReadFile(filesystem, filePath)283 return err284 })285 if err = fsext.Walk(filesystem, afero.FilePathSeparator, walkFunc); err != nil {286 return err287 }288 if len(files) == 0 {289 continue // we don't need to write anything for this fs, if this is not done the root will be written290 }291 dirs := make([]string, 0, len(foundDirs))292 for dirpath := range foundDirs {293 dirs = append(dirs, dirpath)294 }295 sort.Strings(paths)296 sort.Strings(dirs)297 for _, dirPath := range dirs {298 _ = w.WriteHeader(&tar.Header{299 Name: path.Clean(path.Join(name, dirPath)),300 Mode: 0o755, // MemMapFs is buggy301 AccessTime: now, // MemMapFs is buggy302 ChangeTime: now, // MemMapFs is buggy303 ModTime: now, // MemMapFs is buggy304 Typeflag: tar.TypeDir,305 })306 }307 for _, filePath := range paths {308 fullFilePath := path.Clean(path.Join(name, filePath))309 // we either have opaque310 if fullFilePath == actualDataPath {311 madeLinkToData = true312 err = w.WriteHeader(&tar.Header{313 Name: fullFilePath,314 Size: 0,315 Typeflag: tar.TypeLink,316 Linkname: "data",317 })318 } else {319 err = w.WriteHeader(&tar.Header{320 Name: fullFilePath,321 Mode: 0o644, // MemMapFs is buggy322 Size: int64(len(files[filePath])),323 AccessTime: infos[filePath].ModTime(),324 ChangeTime: infos[filePath].ModTime(),325 ModTime: infos[filePath].ModTime(),326 Typeflag: tar.TypeReg,327 })328 if err == nil {329 _, err = w.Write(files[filePath])330 }331 }332 if err != nil {333 return err334 }335 }336 }337 if !madeLinkToData {338 // This should never happen we should always link to `data` from inside the file/https directories339 return fmt.Errorf("archive creation failed because the main script wasn't present in the cached filesystem")340 }341 return w.Close()342}343func (arc *Archive) json() ([]byte, error) {344 buffer := &bytes.Buffer{}345 encoder := json.NewEncoder(buffer)346 // this prevents <, >, and & from being escaped in JSON strings347 encoder.SetEscapeHTML(false)348 encoder.SetIndent("", " ")349 if err := encoder.Encode(arc); err != nil {350 return nil, err351 }352 return buffer.Bytes(), nil353}...

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Remove

Using AI Code Generation

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1import (2func main() {3 fsrc, err := fs.NewFs("local:./")4 if err != nil {5 fmt.Println(err)6 }7 fsext.Remove(fsrc, "test.txt")8}9import (10func main() {11 fsrc, err := fs.NewFs("local:./")12 if err != nil {13 fmt.Println(err)14 }15 fsext.Put(fsrc, "test.txt", "test.txt")16}17import (18func main() {19 fsrc, err := fs.NewFs("local:./")20 if err != nil {21 fmt.Println(err)22 }23 fsext.PutStream(fsrc, "test.txt", "test.txt")24}25import (26func main() {27 fsrc, err := fs.NewFs("local:./")28 if err != nil {29 fmt.Println(err)30 }31 fsext.PutStreamUpdate(fsrc, "test.txt", "test.txt")32}33import (34func main() {35 fsrc, err := fs.NewFs("local:./")36 if err != nil {37 fmt.Println(err)38 }39 fsext.Purge(fsrc, "test.txt")40}

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Remove

Using AI Code Generation

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1import (2func main() {3 if err := copy.Copy(testdata.Path("copy"), "/tmp/copy"); err != nil {4 panic(err)5 }6 if err := copy.Copy("/tmp/copy", "/tmp/paste"); err != nil {7 panic(err)8 }9 if err := copy.Copy("/tmp/paste", "/tmp/overwrite"); err != nil {10 panic(err)11 }12 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {13 panic(err)14 }15 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {16 panic(err)17 }18 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {19 panic(err)20 }21 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {22 panic(err)23 }24 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {25 panic(err)26 }27 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {28 panic(err)29 }30 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {31 panic(err)32 }33 if err := copy.Copy("/tmp/overwrite", "/tmp/overwrite"); err != nil {

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Remove

Using AI Code Generation

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1import (2func main() {3 db, err := leveldb.OpenFile("db", nil)4 if err != nil {5 fmt.Println("Error in creating a new database", err)6 }7 u, err := uuid.NewV4()8 if err != nil {9 fmt.Println("Error in creating a new uuid", err)10 }11 u1, err := uuid.NewV4()12 if err != nil {13 fmt.Println("Error in creating a new uuid", err)14 }15 u2, err := uuid.NewV4()16 if err != nil {17 fmt.Println("Error in creating a new uuid", err)18 }19 u3, err := uuid.NewV4()20 if err != nil {21 fmt.Println("Error in creating a new uuid", err)22 }23 u4, err := uuid.NewV4()24 if err != nil {25 fmt.Println("Error in creating a new uuid", err)26 }27 u5, err := uuid.NewV4()28 if err != nil {29 fmt.Println("Error in creating a new uuid", err)30 }31 u6, err := uuid.NewV4()32 if err != nil {33 fmt.Println("Error in creating a new uuid", err)34 }35 u7, err := uuid.NewV4()36 if err != nil {37 fmt.Println("Error in creating a new uuid", err)38 }39 u8, err := uuid.NewV4()40 if err != nil {41 fmt.Println("Error in creating a new uuid", err)42 }43 u9, err := uuid.NewV4()44 if err != nil {45 fmt.Println("Error in creating a new uuid", err)46 }47 u10, err := uuid.NewV4()

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Remove

Using AI Code Generation

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1import (2func main() {3 fmt.Println("Enter the path of the file to be removed")4 reader := bufio.NewReader(os.Stdin)5 path, _ = reader.ReadString('6 path = filepath.Clean(path)7 err := os.Remove(path)8 if err != nil {9 fmt.Println(err)10 }11 fmt.Println("File Removed")12}13GoLang os.Rename() Method14Rename(oldname, newname string) error15import (16func main() {17 fmt.Println("Enter the path of the file to be renamed")18 reader := bufio.NewReader(os.Stdin)19 old, _ = reader.ReadString('20 fmt.Println("Enter the new name of the file")21 new, _ = reader.ReadString('22 err := os.Rename(old, new)23 if err != nil {24 fmt.Println(err)25 }26 fmt.Println("File Renamed")27}28GoLang os.Stat() Method29Stat(name string) (FileInfo, error)

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Remove

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1import (2func main() {3 lock, err := lockfile.New(filepath.Join(os.TempDir(), "test.lock"))4 if err != nil {5 fmt.Println("Error in creating lock file")6 }7 err = lock.TryLock()8 if err != nil {9 fmt.Println("Error in locking file")10 }11 defer lock.Unlock()12 f, err := os.Create("test.txt")13 if err != nil {14 fmt.Println("Error in creating file")15 }16 defer f.Close()17 f.WriteString("Hello World")18 err = os.Remove("test.txt")19 if err != nil {20 fmt.Println("Error in removing file")21 }22}

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Remove

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1import (2func main() {3 f, err := lockfile.New("/tmp/lockfile")4 if err != nil {5 log.Fatal(err)6 }7 err = f.TryLock()8 if err != nil {9 log.Fatal(err)10 }11 fmt.Println("Lock acquired. Hit enter to release")12 os.Stdin.Read([]byte{0})13 f.Unlock()14}

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Remove

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1import (2func main() {3 err := os.Remove(path)4 if err != nil {5 fmt.Println(err)6 }7 fmt.Println("File removed")8}

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Remove

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1import (2func main() {3 fsext := fsext.New()4 err := fsext.Remove("test")5 if err != nil {6 fmt.Println("error removing directory")7 }8}9import (10func main() {11 fsext := fsext.New()12 err := fsext.RemoveAll("test")13 if err != nil {14 fmt.Println("error removing directory")15 }16}17import (18func main() {19 fsext := fsext.New()20 err := fsext.RemoveAll("test")21 if err != nil {22 fmt.Println("error removing directory")23 }24}25import (26func main() {27 fsext := fsext.New()28 err := fsext.RemoveAll("test")29 if err != nil {30 fmt.Println("error removing directory")31 }32}33import (34func main() {35 fsext := fsext.New()36 err := fsext.RemoveAll("test")37 if err != nil {38 fmt.Println("error removing directory")39 }40}41import (42func main() {

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