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How to use FileWriter method of gcs Package

Best Syzkaller code snippet using gcs.FileWriter

gcs.go

Source:gcs.go

...18	externalClient bool19	Bucket         *storage.BucketHandle20	FilePath       string21	FileReader     *storage.Reader22	FileWriter     *storage.Writer23	offset   int6424	whence   int25	fileSize int6426}27func NewGcsFileWriter(ctx context.Context, projectId string, bucketName string, name string) (source.ParquetFile, error) {28	res := &GcsFile{29		ProjectId:  projectId,30		BucketName: bucketName,31		Ctx:        ctx,32		FilePath:   name,33	}34	return res.Create(name)35}36func NewGcsFileWriterWithClient(ctx context.Context, client *storage.Client, projectId string, bucketName string, name string) (source.ParquetFile, error) {37	res := &GcsFile{38		ProjectId:      projectId,39		BucketName:     bucketName,40		Ctx:            ctx,41		Client:         client,42		externalClient: true,43		FilePath:       name,44	}45	return res.Create(name)46}47func NewGcsFileReader(ctx context.Context, projectId string, bucketName string, name string) (source.ParquetFile, error) {48	res := &GcsFile{49		ProjectId:  projectId,50		BucketName: bucketName,51		Ctx:        ctx,52		FilePath:   name,53	}54	return res.Open(name)55}56func NewGcsFileReaderWithClient(ctx context.Context, client *storage.Client, projectId string, bucketName string, name string) (source.ParquetFile, error) {57	res := &GcsFile{58		ProjectId:      projectId,59		BucketName:     bucketName,60		Ctx:            ctx,61		Client:         client,62		externalClient: true,63		FilePath:       name,64	}65	return res.Open(name)66}67func (self *GcsFile) Create(name string) (source.ParquetFile, error) {68	var err error69	gcs := new(GcsFile)70	if self.Client == nil {71		gcs.Client, err = storage.NewClient(self.Ctx)72		gcs.externalClient = false73	} else {74		gcs.Client = self.Client75		gcs.externalClient = self.externalClient76	}77	gcs.FilePath = name78	if err != nil {79		return gcs, err80	}81	// must use existing bucket82	gcs.Bucket = gcs.Client.Bucket(self.BucketName)83	obj := gcs.Bucket.Object(name)84	gcs.FileWriter = obj.NewWriter(self.Ctx)85	return gcs, err86}87func (self *GcsFile) Open(name string) (source.ParquetFile, error) {88	var err error89	gcs := new(GcsFile)90	if self.Client == nil {91		gcs.Client, err = storage.NewClient(self.Ctx)92		gcs.externalClient = false93	} else {94		gcs.Client = self.Client95		gcs.externalClient = self.externalClient96	}97	if err != nil {98		return gcs, err99	}100	if name == "" {101		gcs.FilePath = self.FilePath102	} else {103		gcs.FilePath = name104	}105	// must use existing bucket106	gcs.Bucket = gcs.Client.Bucket(self.BucketName)107	obj := gcs.Bucket.Object(gcs.FilePath)108	attrs, err := obj.Attrs(self.Ctx)109	if err != nil {110		return gcs, err111	}112	gcs.fileSize = attrs.Size113	gcs.Ctx = self.Ctx114	gcs.ProjectId = self.ProjectId115	gcs.BucketName = self.BucketName116	return gcs, err117}118func (self *GcsFile) Seek(offset int64, whence int) (int64, error) {119	if whence < io.SeekStart || whence > io.SeekEnd {120		return 0, errWhence121	}122	if self.fileSize > 0 {123		switch whence {124		case io.SeekStart:125			if offset < 0 || offset > self.fileSize {126				return 0, errInvalidOffset127			}128		case io.SeekCurrent:129			offset += self.offset130			if offset < 0 || offset > self.fileSize {131				return 0, errInvalidOffset132			}133		case io.SeekEnd:134			if offset > -1 || -offset > self.fileSize {135				return 0, errInvalidOffset136			}137		}138	}139	self.offset = offset140	self.whence = whence141	return self.offset, nil142}143func (self *GcsFile) Read(b []byte) (cnt int, err error) {144	if self.fileSize > 0 && self.offset >= self.fileSize {145		return 0, io.EOF146	}147	ln := len(b)148	obj := self.Bucket.Object(self.FilePath)149	if self.offset == 0 {150		self.FileReader, err = obj.NewReader(self.Ctx)151	} else {152		var length int64153		if self.offset < 0 || (self.whence == io.SeekEnd && int64(ln) >= self.fileSize-self.offset) {154			length = -1155		} else {156			length = int64(ln)157		}158		self.FileReader, err = obj.NewRangeReader(self.Ctx, self.offset, length)159		if err != nil {160			return161		}162	}163	defer self.FileReader.Close()164	var n int165	for cnt < ln {166		n, err = self.FileReader.Read(b[cnt:])167		cnt += n168		if err != nil {169			break170		}171	}172	self.offset += int64(cnt)173	return cnt, err174}175func (self *GcsFile) Write(b []byte) (n int, err error) {176	return self.FileWriter.Write(b)177}178func (self *GcsFile) Close() error {179	if self.FileReader != nil {180		if err := self.FileReader.Close(); err != nil {181			return err182		}183	}184	if self.FileWriter != nil {185		if err := self.FileWriter.Close(); err != nil {186			return err187		}188	}189	if self.Client != nil && !self.externalClient {190		err := self.Client.Close()191		self.Client = nil192		if err != nil {193			return err194		}195	}196	return nil197}...

GCSFile.go

Source:GCSFile.go

...10	Client     *storage.Client11	Bucket     *storage.BucketHandle12	FilePath   string13	FileReader *storage.Reader14	FileWriter *storage.Writer15}16func NewGcsFileWriter(ctx context.Context, projectId string, bucketName string, name string) (ParquetFile, error) {17	res := &GcsFile{18		ProjectId:  projectId,19		BucketName: bucketName,20		Ctx:        ctx,21		FilePath:   name,22	}23	return res.Create(name)24}25func NewGcsFileReader(ctx context.Context, projectId string, bucketName string, name string) (ParquetFile, error) {26	res := &GcsFile{27		ProjectId:  projectId,28		BucketName: bucketName,29		Ctx:        ctx,30		FilePath:   name,31	}32	return res.Open(name)33}34func (self *GcsFile) Create(name string) (ParquetFile, error) {35	var err error36	gcs := new(GcsFile)37	gcs.Client, err = storage.NewClient(self.Ctx)38	gcs.FilePath = name39	if err != nil {40		return gcs, err41	}42	// must use existing bucket43	gcs.Bucket = gcs.Client.Bucket(self.BucketName)44	obj := gcs.Bucket.Object(name)45	gcs.FileWriter = obj.NewWriter(self.Ctx)46	return gcs, err47}48func (self *GcsFile) Open(name string) (ParquetFile, error) {49	var err error50	gcs := new(GcsFile)51	gcs.Client, err = storage.NewClient(self.Ctx)52	gcs.FilePath = name53	if err != nil {54		return gcs, err55	}56	// must use existing bucket57	gcs.Bucket = gcs.Client.Bucket(self.BucketName)58	obj := gcs.Bucket.Object(name)59	gcs.FileReader, err = obj.NewReader(self.Ctx)60	return gcs, err61}62func (self *GcsFile) Seek(offset int64, pos int) (int64, error) {63	//Not implemented64	return 0, nil65}66func (self *GcsFile) Read(b []byte) (cnt int, err error) {67	var n int68	ln := len(b)69	for cnt < ln {70		n, err = self.FileReader.Read(b[cnt:])71		cnt += n72		if err != nil {73			break74		}75	}76	return cnt, err77}78func (self *GcsFile) Write(b []byte) (n int, err error) {79	return self.FileWriter.Write(b)80}81func (self *GcsFile) Close() error {82	if self.FileReader != nil {83		if err := self.FileReader.Close(); err != nil {84			return err85		}86	}87	if self.FileWriter != nil {88		if err := self.FileWriter.Close(); err != nil {89			return err90		}91	}92	if self.Client != nil {93		if err := self.Client.Close(); err != nil {94			return err95		}96	}97	return nil98}...

writer.go

Source:writer.go

1package gcs2import (3	"context"4	"cloud.google.com/go/storage"5	"github.com/hexbee-net/errors"6)7type Writer struct {8	file9	fileWriter *storage.Writer10}11// NewWriter creates an GCS Writer.12func NewWriter(ctx context.Context, projectID, bucketName, name string) (*Writer, error) {13	client, err := storage.NewClient(ctx)14	if err != nil {15		return nil, errors.WithStack(errInstantiate)16	}17	writer := &Writer{18		file: file{19			ProjectID:      projectID,20			BucketName:     bucketName,21			FilePath:       name,22			ctx:            ctx,23			externalClient: false,24			Client:         client,25		},26	}27	writer.create()28	return writer, nil29}30// NewWriterWithClient is the same as NewWriter but allows passing your own GCS client.31func NewWriterWithClient(ctx context.Context, client *storage.Client, projectID, bucketName, name string) (*Writer, error) {32	writer := &Writer{33		file: file{34			ProjectID:      projectID,35			BucketName:     bucketName,36			ctx:            ctx,37			FilePath:       name,38			externalClient: true,39			Client:         client,40		},41	}42	writer.create()43	return writer, nil44}45func (w *Writer) Write(p []byte) (n int, err error) {46	return w.fileWriter.Write(p)47}48func (w *Writer) Close() error {49	if w.fileWriter != nil {50		if err := w.fileWriter.Close(); err != nil {51			return errors.Wrap(err, "failed to close GCS writer")52		}53	}54	return w.file.Close()55}56func (w *Writer) create() {57	w.Bucket = w.Client.Bucket(w.BucketName)58	w.Object = w.Bucket.Object(w.FilePath)59	w.fileWriter = w.Object.NewWriter(w.ctx)60}...

FileWriter

Using AI Code Generation

1import (2func init() {3	http.HandleFunc("/upload", upload)4}5func upload(w http.ResponseWriter, r *http.Request) {6	ctx := appengine.NewContext(r)7	bucket, err := file.DefaultBucketName(ctx)8	if err != nil {9		log.Fatal(err)10	}11	if err != nil {12		log.Fatal(err)13	}14	fmt.Fprint(writer, "Hello, world!")15	writer.Close()16}17import (18func init() {19	http.HandleFunc("/upload", upload)20}21func upload(w http.ResponseWriter, r *http.Request) {22	ctx := appengine.NewContext(r)23	bucket, err := file.DefaultBucketName(ctx)24	if err != nil {25		log.Fatal(err)26	}27	if err != nil {28		log.Fatal(err)29	}30	fmt.Fprint(writer, "Hello, world!")31	writer.Close()32}33import (34func init() {35	http.HandleFunc("/upload", upload)36}37func upload(w http.ResponseWriter, r *http.Request) {38	ctx := appengine.NewContext(r)39	bucket, err := file.DefaultBucketName(ctx)40	if err != nil {41		log.Fatal(err)42	}

FileWriter

Using AI Code Generation

1import (2func main() {3    ctx := context.Background()4    client, err := google.DefaultClient(ctx, storage.DevstorageFull_controlScope)5    if err != nil {6        log.Fatalf("Unable to get default client: %v", err)7    }8    service, err := storage.New(client)9    if err != nil {10        log.Fatalf("Unable to create storage service: %v", err)11    }

FileWriter

Using AI Code Generation

1import (2func main() {3    ctx := context.Background()4    client, err := storage.NewClient(ctx, option.WithoutAuthentication())5    if err != nil {6        log.Fatalf("Failed to create client: %v", err)7    }8    bucket := client.Bucket("bucket_name")9    bucketHandle := client.Bucket("bucket_name")10    object := bucket.Object("object_name")11    w := bucketHandle.Object("object_name").NewWriter(ctx)12    r := bucketHandle.Object("object_name").NewReader(ctx)13    r, err := bucketHandle.Object("object_name").NewRangeReader(ctx, 0, 100)14    if err != nil {15        log.Fatalf("Failed to open object: %v", err)16    }17    r, err := bucketHandle.Object("object_name").NewRangeReader(ctx, 0, 100)18    if err != nil {19        log.Fatalf("Failed to open object: %v", err)20    }21    r, err := bucketHandle.Object("object_name").NewRangeReader(ctx, 0, 100)22    if err != nil {23        log.Fatalf("Failed to open object: %v", err)24    }25    r, err := bucketHandle.Object("object_name").NewRangeReader(ctx, 0, 100)26    if err != nil {27        log.Fatalf("Failed to open object: %v", err)28    }29    r, err := bucketHandle.Object("object_name").NewRangeReader(ctx, 0, 100)30    if err != nil {31        log.Fatalf("Failed to open object: %v", err)32    }33    r, err := bucketHandle.Object("object_name").NewRangeReader(ctx, 0, 100)34    if err != nil {35        log.Fatalf("Failed to open object: %v", err

FileWriter

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	client, err := storage.NewClient(ctx)5	if err != nil {6		log.Fatalf("Failed to create client: %v", err)7	}8	bucket := &storage.Bucket{Name: bucketName}9	if _, err = client.Buckets.Insert("my-project-id", bucket).Do(); err != nil {10		log.Fatalf("Failed to create bucket: %v", err)11	}12	bucket := &storage.Bucket{Name: bucketName}13	if _, err = client.Buckets.Insert("my-project-id", bucket).Do(); err != nil {14		log.Fatalf("Failed to create bucket: %v", err)15	}16	it := client.Buckets.List("my-project-id")17	for {18		b, err := it.Next()19		if err == iterator.Done {20		}21		if err != nil {22			log.Fatalf("Failed to list buckets: %v", err)23		}24		fmt.Printf("Bucket: %v25	}26	f, err := os.Open("/home/user/Downloads/some-file.txt")27	if err != nil {28		log.Fatalf("Failed to open file: %v", err)29	}30	wc := client.Bucket(bucketName).Object(objectName).NewWriter(ctx)31	if _, err = io.Copy(wc, f); err != nil {32		log.Fatalf("Failed to copy file: %v",

FileWriter

Using AI Code Generation

1import (2func main() {3    gcsObj := gcs.NewGCS()4}5import (6type GCS struct {7}8func NewGCS() *GCS {9    return &GCS{}10}11func (gcs *GCS) FileWriter(filePath string, content string) {12    bucket, path := gcs.getBucketAndPath(filePath)13    ctx := context.Background()14    client, err := storage.NewClient(ctx, option.WithCredentialsFile("credentials.json"))15    if err != nil {16        log.Fatalf("Failed to create client: %v", err)17    }18    writer := client.Bucket(bucket).Object(path).NewWriter(ctx)19    _, err = io.Copy(writer, bufio.NewReader(strings.NewReader(content)))20    if err != nil {21        log.Fatalf("Failed to write file: %v", err)22    }23    err = writer.Close()24    if err != nil {25        log.Fatalf("Failed to close writer: %v", err)26    }27    client.Close()28}29func (gcs *GCS) getBucketAndPath(filePath string) (string, string) {30    splitPath := strings.Split(filePath, "/")31    path := strings.Join(splitPath[3:], "/")32}

FileWriter

Using AI Code Generation

1gcs fw = new gcs();2fw.FileWriter("test.txt");3gcs fr = new gcs();4fr.FileReader("test.txt");5gcs fd = new gcs();6fd.FileDelete("test.txt");7gcs fc = new gcs();8fc.FileCopy("test.txt", "test2.txt");9gcs frn = new gcs();10frn.FileRename("test.txt", "test3.txt");11gcs fm = new gcs();12fm.FileMove("test2.txt", "test4.txt");13gcs fcfu = new gcs();14gcs fctu = new gcs();15gcs fclf = new gcs();16fclf.FileCopyFromLocal("test5.png", "test6.png");

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