From a18a13fb09eac00cdacf1f74080524182b7243de Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Mon, 6 Jun 2016 00:55:30 +0100 Subject: update vendor --- vendor/go4.org/LICENSE | 202 +++++++++++++++++++++++++++++++++++++++++ vendor/go4.org/wkfs/gcs/gcs.go | 196 +++++++++++++++++++++++++++++++++++++++ vendor/go4.org/wkfs/wkfs.go | 132 +++++++++++++++++++++++++++ 3 files changed, 530 insertions(+) create mode 100644 vendor/go4.org/LICENSE create mode 100644 vendor/go4.org/wkfs/gcs/gcs.go create mode 100644 vendor/go4.org/wkfs/wkfs.go (limited to 'vendor/go4.org') diff --git a/vendor/go4.org/LICENSE b/vendor/go4.org/LICENSE new file mode 100644 index 0000000..8f71f43 --- /dev/null +++ b/vendor/go4.org/LICENSE @@ -0,0 +1,202 @@ + 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. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "{}" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. 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 new file mode 100644 index 0000000..21f2551 --- /dev/null +++ b/vendor/go4.org/wkfs/gcs/gcs.go @@ -0,0 +1,196 @@ +/* +Copyright 2014 The Camlistore 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" + + "go4.org/wkfs" + "golang.org/x/net/context" + "golang.org/x/oauth2" + "golang.org/x/oauth2/google" + "google.golang.org/cloud" + "google.golang.org/cloud/compute/metadata" + "google.golang.org/cloud/storage" +) + +// 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 + } + projID, err := metadata.ProjectID() + if projID == "" || err != nil { + registerBrokenFS(fmt.Errorf("could not get GCE project ID: %v", err)) + return + } + ctx := cloud.NewContext(projID, hc) + sc, err := storage.NewClient(ctx) + 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 +} + +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 new file mode 100644 index 0000000..f4df062 --- /dev/null +++ b/vendor/go4.org/wkfs/wkfs.go @@ -0,0 +1,132 @@ +/* +Copyright 2014 The Camlistore 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 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) +} + +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 +} + +// 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) +} -- cgit v1.2.3