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Diffstat (limited to 'vendor/go4.org')
| -rw-r--r-- | vendor/go4.org/LICENSE | 202 | ||||
| -rw-r--r-- | vendor/go4.org/wkfs/gcs/gcs.go | 199 | ||||
| -rw-r--r-- | vendor/go4.org/wkfs/wkfs.go | 135 |
3 files changed, 0 insertions, 536 deletions
diff --git a/vendor/go4.org/LICENSE b/vendor/go4.org/LICENSE deleted file mode 100644 index 8f71f43..0000000 --- a/vendor/go4.org/LICENSE +++ /dev/null @@ -1,202 +0,0 @@ - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. Definitions. - - "License" shall mean the terms and conditions for use, reproduction, - and distribution as defined by Sections 1 through 9 of this document. - - "Licensor" shall mean the copyright owner or entity authorized by - the copyright owner that is granting the License. - - "Legal Entity" shall mean the union of the acting entity and all - other entities that control, are controlled by, or are under common - control with that entity. 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We also recommend that a - file or class name and description of purpose be included on the - same "printed page" as the copyright notice for easier - identification within third-party archives. - - Copyright {yyyy} {name of copyright owner} - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - diff --git a/vendor/go4.org/wkfs/gcs/gcs.go b/vendor/go4.org/wkfs/gcs/gcs.go deleted file mode 100644 index 7d29e56..0000000 --- a/vendor/go4.org/wkfs/gcs/gcs.go +++ /dev/null @@ -1,199 +0,0 @@ -/* -Copyright 2014 The Perkeep Authors - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -// Package gcs registers a Google Cloud Storage filesystem at the -// well-known /gcs/ filesystem path if the current machine is running -// on Google Compute Engine. -// -// It was initially only meant for small files, and as such, it can only -// read files smaller than 1MB for now. -package gcs // import "go4.org/wkfs/gcs" - -import ( - "bytes" - "fmt" - "io" - "io/ioutil" - "os" - "path" - "strings" - "time" - - "cloud.google.com/go/compute/metadata" - "cloud.google.com/go/storage" - "go4.org/wkfs" - "golang.org/x/net/context" - "golang.org/x/oauth2" - "golang.org/x/oauth2/google" - "google.golang.org/api/option" -) - -// Max size for all files read, because we use a bytes.Reader as our file -// reader, instead of storage.NewReader. This is because we get all wkfs.File -// methods for free by embedding a bytes.Reader. This filesystem was only supposed -// to be for configuration data only, so this is ok for now. -const maxSize = 1 << 20 - -func init() { - if !metadata.OnGCE() { - return - } - hc, err := google.DefaultClient(oauth2.NoContext) - if err != nil { - registerBrokenFS(fmt.Errorf("could not get http client for context: %v", err)) - return - } - ctx := context.Background() - sc, err := storage.NewClient(ctx, option.WithHTTPClient(hc)) - if err != nil { - registerBrokenFS(fmt.Errorf("could not get cloud storage client: %v", err)) - return - } - wkfs.RegisterFS("/gcs/", &gcsFS{ - ctx: ctx, - sc: sc, - }) -} - -type gcsFS struct { - ctx context.Context - sc *storage.Client - err error // sticky error -} - -func registerBrokenFS(err error) { - wkfs.RegisterFS("/gcs/", &gcsFS{ - err: err, - }) -} - -func (fs *gcsFS) parseName(name string) (bucket, fileName string, err error) { - if fs.err != nil { - return "", "", fs.err - } - name = strings.TrimPrefix(name, "/gcs/") - i := strings.Index(name, "/") - if i < 0 { - return name, "", nil - } - return name[:i], name[i+1:], nil -} - -// Open opens the named file for reading. It returns an error if the file size -// is larger than 1 << 20. -func (fs *gcsFS) Open(name string) (wkfs.File, error) { - bucket, fileName, err := fs.parseName(name) - if err != nil { - return nil, err - } - obj := fs.sc.Bucket(bucket).Object(fileName) - attrs, err := obj.Attrs(fs.ctx) - if err != nil { - return nil, err - } - size := attrs.Size - if size > maxSize { - return nil, fmt.Errorf("file %s too large (%d bytes) for /gcs/ filesystem", name, size) - } - rc, err := obj.NewReader(fs.ctx) - if err != nil { - return nil, err - } - defer rc.Close() - - slurp, err := ioutil.ReadAll(io.LimitReader(rc, size)) - if err != nil { - return nil, err - } - return &file{ - name: name, - Reader: bytes.NewReader(slurp), - }, nil -} - -func (fs *gcsFS) Stat(name string) (os.FileInfo, error) { return fs.Lstat(name) } -func (fs *gcsFS) Lstat(name string) (os.FileInfo, error) { - bucket, fileName, err := fs.parseName(name) - if err != nil { - return nil, err - } - attrs, err := fs.sc.Bucket(bucket).Object(fileName).Attrs(fs.ctx) - if err == storage.ErrObjectNotExist { - return nil, os.ErrNotExist - } - if err != nil { - return nil, err - } - return &statInfo{ - name: attrs.Name, - size: attrs.Size, - }, nil -} - -func (fs *gcsFS) MkdirAll(path string, perm os.FileMode) error { return nil } - -func (fs *gcsFS) OpenFile(name string, flag int, perm os.FileMode) (wkfs.FileWriter, error) { - bucket, fileName, err := fs.parseName(name) - if err != nil { - return nil, err - } - switch flag { - case os.O_WRONLY | os.O_CREATE | os.O_EXCL: - case os.O_WRONLY | os.O_CREATE | os.O_TRUNC: - default: - return nil, fmt.Errorf("Unsupported OpenFlag flag mode %d on Google Cloud Storage", flag) - } - if flag&os.O_EXCL != 0 { - if _, err := fs.Stat(name); err == nil { - return nil, os.ErrExist - } - } - // TODO(mpl): consider adding perm to the object's ObjectAttrs.Metadata - return fs.sc.Bucket(bucket).Object(fileName).NewWriter(fs.ctx), nil -} - -func (fs *gcsFS) Remove(name string) error { - bucket, fileName, err := fs.parseName(name) - if err != nil { - return err - } - return fs.sc.Bucket(bucket).Object(fileName).Delete(fs.ctx) -} - -type statInfo struct { - name string - size int64 - isDir bool - modtime time.Time -} - -func (si *statInfo) IsDir() bool { return si.isDir } -func (si *statInfo) ModTime() time.Time { return si.modtime } -func (si *statInfo) Mode() os.FileMode { return 0644 } -func (si *statInfo) Name() string { return path.Base(si.name) } -func (si *statInfo) Size() int64 { return si.size } -func (si *statInfo) Sys() interface{} { return nil } - -type file struct { - name string - *bytes.Reader -} - -func (*file) Close() error { return nil } -func (f *file) Name() string { return path.Base(f.name) } -func (f *file) Stat() (os.FileInfo, error) { - panic("Stat not implemented on /gcs/ files yet") -} diff --git a/vendor/go4.org/wkfs/wkfs.go b/vendor/go4.org/wkfs/wkfs.go deleted file mode 100644 index ab67690..0000000 --- a/vendor/go4.org/wkfs/wkfs.go +++ /dev/null @@ -1,135 +0,0 @@ -/* -Copyright 2014 The Perkeep Authors - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -// Package wkfs implements the pluggable "well-known filesystem" abstraction layer. -// -// Instead of accessing files directly through the operating system -// using os.Open or os.Stat, code should use wkfs.Open or wkfs.Stat, -// which first try to intercept paths at well-known top-level -// directories representing previously-registered mount types, -// otherwise fall through to the operating system paths. -// -// Example of top-level well-known directories that might be -// registered include /gcs/bucket/object for Google Cloud Storage or -// /s3/bucket/object for AWS S3. -package wkfs // import "go4.org/wkfs" - -import ( - "io" - "io/ioutil" - "os" - "strings" -) - -type File interface { - io.Reader - io.ReaderAt - io.Closer - io.Seeker - Name() string - Stat() (os.FileInfo, error) -} - -type FileWriter interface { - io.Writer - io.Closer -} - -func Open(name string) (File, error) { return fs(name).Open(name) } -func Stat(name string) (os.FileInfo, error) { return fs(name).Stat(name) } -func Lstat(name string) (os.FileInfo, error) { return fs(name).Lstat(name) } -func MkdirAll(path string, perm os.FileMode) error { return fs(path).MkdirAll(path, perm) } -func OpenFile(name string, flag int, perm os.FileMode) (FileWriter, error) { - return fs(name).OpenFile(name, flag, perm) -} -func Remove(name string) error { return fs(name).Remove(name) } -func Create(name string) (FileWriter, error) { - // like os.Create but WRONLY instead of RDWR because we don't - // expose a Reader here. - return OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666) -} - -func fs(name string) FileSystem { - for pfx, fs := range wkFS { - if strings.HasPrefix(name, pfx) { - return fs - } - } - return osFS{} -} - -type osFS struct{} - -func (osFS) Open(name string) (File, error) { return os.Open(name) } -func (osFS) Stat(name string) (os.FileInfo, error) { return os.Stat(name) } -func (osFS) Lstat(name string) (os.FileInfo, error) { return os.Lstat(name) } -func (osFS) MkdirAll(path string, perm os.FileMode) error { return os.MkdirAll(path, perm) } -func (osFS) OpenFile(name string, flag int, perm os.FileMode) (FileWriter, error) { - return os.OpenFile(name, flag, perm) -} -func (osFS) Remove(name string) error { return os.Remove(name) } - -type FileSystem interface { - Open(name string) (File, error) - OpenFile(name string, flag int, perm os.FileMode) (FileWriter, error) - Stat(name string) (os.FileInfo, error) - Lstat(name string) (os.FileInfo, error) - MkdirAll(path string, perm os.FileMode) error - Remove(name string) error -} - -// well-known filesystems -var wkFS = map[string]FileSystem{} - -// RegisterFS registers a well-known filesystem. It intercepts -// anything beginning with prefix (which must start and end with a -// forward slash) and forwards it to fs. -func RegisterFS(prefix string, fs FileSystem) { - if !strings.HasPrefix(prefix, "/") || !strings.HasSuffix(prefix, "/") { - panic("bogus prefix: " + prefix) - } - if _, dup := wkFS[prefix]; dup { - panic("duplication registration of " + prefix) - } - wkFS[prefix] = fs -} - -// WriteFile writes data to a file named by filename. -// If the file does not exist, WriteFile creates it with permissions perm; -// otherwise WriteFile truncates it before writing. -func WriteFile(filename string, data []byte, perm os.FileMode) error { - f, err := OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm) - if err != nil { - return err - } - n, err := f.Write(data) - if err == nil && n < len(data) { - err = io.ErrShortWrite - } - if err1 := f.Close(); err == nil { - err = err1 - } - return err -} - -func ReadFile(filename string) ([]byte, error) { - f, err := Open(filename) - if err != nil { - return nil, err - } - defer f.Close() - return ioutil.ReadAll(f) -} |