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Diffstat (limited to 'vendor/github.com/docker')
16 files changed, 931 insertions, 0 deletions
diff --git a/vendor/github.com/docker/go-plugins-helpers/LICENSE b/vendor/github.com/docker/go-plugins-helpers/LICENSE new file mode 100644 index 000000000..8f71f43fe --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/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. 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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. 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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. 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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/github.com/docker/go-plugins-helpers/NOTICE b/vendor/github.com/docker/go-plugins-helpers/NOTICE new file mode 100644 index 000000000..6e6f469ab --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/NOTICE @@ -0,0 +1,19 @@ +Docker +Copyright 2012-2015 Docker, Inc. + +This product includes software developed at Docker, Inc. (https://www.docker.com). + +This product contains software (https://github.com/kr/pty) developed +by Keith Rarick, licensed under the MIT License. + +The following is courtesy of our legal counsel: + + +Use and transfer of Docker may be subject to certain restrictions by the +United States and other governments. +It is your responsibility to ensure that your use and/or transfer does not +violate applicable laws. + +For more information, please see https://www.bis.doc.gov + +See also https://www.apache.org/dev/crypto.html and/or seek legal counsel. diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/encoder.go b/vendor/github.com/docker/go-plugins-helpers/sdk/encoder.go new file mode 100644 index 000000000..195812a44 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/encoder.go @@ -0,0 +1,37 @@ +package sdk + +import ( + "encoding/json" + "fmt" + "io" + "net/http" +) + +// DefaultContentTypeV1_1 is the default content type accepted and sent by the plugins. +const DefaultContentTypeV1_1 = "application/vnd.docker.plugins.v1.1+json" + +// DecodeRequest decodes an http request into a given structure. +func DecodeRequest(w http.ResponseWriter, r *http.Request, req interface{}) (err error) { + if err = json.NewDecoder(r.Body).Decode(req); err != nil { + http.Error(w, err.Error(), http.StatusBadRequest) + } + return +} + +// EncodeResponse encodes the given structure into an http response. +func EncodeResponse(w http.ResponseWriter, res interface{}, err bool) { + w.Header().Set("Content-Type", DefaultContentTypeV1_1) + if err { + w.WriteHeader(http.StatusInternalServerError) + } + json.NewEncoder(w).Encode(res) +} + +// StreamResponse streams a response object to the client +func StreamResponse(w http.ResponseWriter, data io.ReadCloser) { + w.Header().Set("Content-Type", DefaultContentTypeV1_1) + if _, err := copyBuf(w, data); err != nil { + fmt.Printf("ERROR in stream: %v\n", err) + } + data.Close() +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/handler.go b/vendor/github.com/docker/go-plugins-helpers/sdk/handler.go new file mode 100644 index 000000000..c0d042ed0 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/handler.go @@ -0,0 +1,88 @@ +package sdk + +import ( + "crypto/tls" + "fmt" + "net" + "net/http" + "os" +) + +const activatePath = "/Plugin.Activate" + +// Handler is the base to create plugin handlers. +// It initializes connections and sockets to listen to. +type Handler struct { + mux *http.ServeMux +} + +// NewHandler creates a new Handler with an http mux. +func NewHandler(manifest string) Handler { + mux := http.NewServeMux() + + mux.HandleFunc(activatePath, func(w http.ResponseWriter, r *http.Request) { + w.Header().Set("Content-Type", DefaultContentTypeV1_1) + fmt.Fprintln(w, manifest) + }) + + return Handler{mux: mux} +} + +// Serve sets up the handler to serve requests on the passed in listener +func (h Handler) Serve(l net.Listener) error { + server := http.Server{ + Addr: l.Addr().String(), + Handler: h.mux, + } + return server.Serve(l) +} + +// ServeTCP makes the handler to listen for request in a given TCP address. +// It also writes the spec file in the right directory for docker to read. +// Due to constrains for running Docker in Docker on Windows, data-root directory +// of docker daemon must be provided. To get default directory, use +// WindowsDefaultDaemonRootDir() function. On Unix, this parameter is ignored. +func (h Handler) ServeTCP(pluginName, addr, daemonDir string, tlsConfig *tls.Config) error { + l, spec, err := newTCPListener(addr, pluginName, daemonDir, tlsConfig) + if err != nil { + return err + } + if spec != "" { + defer os.Remove(spec) + } + return h.Serve(l) +} + +// ServeUnix makes the handler to listen for requests in a unix socket. +// It also creates the socket file in the right directory for docker to read. +func (h Handler) ServeUnix(addr string, gid int) error { + l, spec, err := newUnixListener(addr, gid) + if err != nil { + return err + } + if spec != "" { + defer os.Remove(spec) + } + return h.Serve(l) +} + +// ServeWindows makes the handler to listen for request in a Windows named pipe. +// It also creates the spec file in the right directory for docker to read. +// Due to constrains for running Docker in Docker on Windows, data-root directory +// of docker daemon must be provided. To get default directory, use +// WindowsDefaultDaemonRootDir() function. On Unix, this parameter is ignored. +func (h Handler) ServeWindows(addr, pluginName, daemonDir string, pipeConfig *WindowsPipeConfig) error { + l, spec, err := newWindowsListener(addr, pluginName, daemonDir, pipeConfig) + if err != nil { + return err + } + if spec != "" { + defer os.Remove(spec) + } + return h.Serve(l) +} + +// HandleFunc registers a function to handle a request path with. +func (h Handler) HandleFunc(path string, fn func(w http.ResponseWriter, r *http.Request)) { + h.mux.HandleFunc(path, fn) +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/pool.go b/vendor/github.com/docker/go-plugins-helpers/sdk/pool.go new file mode 100644 index 000000000..316775973 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/pool.go @@ -0,0 +1,18 @@ +package sdk + +import ( + "io" + "sync" +) + +const buffer32K = 32 * 1024 + +var buffer32KPool = &sync.Pool{New: func() interface{} { return make([]byte, buffer32K) }} + +// copyBuf uses a shared buffer pool with io.CopyBuffer +func copyBuf(w io.Writer, r io.Reader) (int64, error) { + buf := buffer32KPool.Get().([]byte) + written, err := io.CopyBuffer(w, r, buf) + buffer32KPool.Put(buf) + return written, err +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/spec_file_generator.go b/vendor/github.com/docker/go-plugins-helpers/sdk/spec_file_generator.go new file mode 100644 index 000000000..bc8cfc644 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/spec_file_generator.go @@ -0,0 +1,58 @@ +package sdk + +import ( + "fmt" + "io/ioutil" + "os" + "path/filepath" +) + +type protocol string + +const ( + protoTCP protocol = "tcp" + protoNamedPipe protocol = "npipe" +) + +// PluginSpecDir returns plugin spec dir in relation to daemon root directory. +func PluginSpecDir(daemonRoot string) string { + return ([]string{filepath.Join(daemonRoot, "plugins")})[0] +} + +// WindowsDefaultDaemonRootDir returns default data directory of docker daemon on Windows. +func WindowsDefaultDaemonRootDir() string { + return filepath.Join(os.Getenv("programdata"), "docker") +} + +func createPluginSpecDirWindows(name, address, daemonRoot string) (string, error) { + _, err := os.Stat(daemonRoot) + if os.IsNotExist(err) { + return "", fmt.Errorf("Deamon root directory must already exist: %s", err) + } + + pluginSpecDir := PluginSpecDir(daemonRoot) + + if err := windowsCreateDirectoryWithACL(pluginSpecDir); err != nil { + return "", err + } + return pluginSpecDir, nil +} + +func createPluginSpecDirUnix(name, address string) (string, error) { + pluginSpecDir := PluginSpecDir("/etc/docker") + if err := os.MkdirAll(pluginSpecDir, 0755); err != nil { + return "", err + } + return pluginSpecDir, nil +} + +func writeSpecFile(name, address, pluginSpecDir string, proto protocol) (string, error) { + specFileDir := filepath.Join(pluginSpecDir, name+".spec") + + url := string(proto) + "://" + address + if err := ioutil.WriteFile(specFileDir, []byte(url), 0644); err != nil { + return "", err + } + + return specFileDir, nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/tcp_listener.go b/vendor/github.com/docker/go-plugins-helpers/sdk/tcp_listener.go new file mode 100644 index 000000000..bad85f7fd --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/tcp_listener.go @@ -0,0 +1,34 @@ +package sdk + +import ( + "crypto/tls" + "net" + "runtime" + + "github.com/docker/go-connections/sockets" +) + +func newTCPListener(address, pluginName, daemonDir string, tlsConfig *tls.Config) (net.Listener, string, error) { + listener, err := sockets.NewTCPSocket(address, tlsConfig) + if err != nil { + return nil, "", err + } + + addr := listener.Addr().String() + + var specDir string + if runtime.GOOS == "windows" { + specDir, err = createPluginSpecDirWindows(pluginName, addr, daemonDir) + } else { + specDir, err = createPluginSpecDirUnix(pluginName, addr) + } + if err != nil { + return nil, "", err + } + + specFile, err := writeSpecFile(pluginName, addr, specDir, protoTCP) + if err != nil { + return nil, "", err + } + return listener, specFile, nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener.go b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener.go new file mode 100644 index 000000000..54b9a6d31 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener.go @@ -0,0 +1,35 @@ +// +build linux freebsd + +package sdk + +import ( + "net" + "os" + "path/filepath" + + "github.com/docker/go-connections/sockets" +) + +const pluginSockDir = "/run/docker/plugins" + +func newUnixListener(pluginName string, gid int) (net.Listener, string, error) { + path, err := fullSocketAddress(pluginName) + if err != nil { + return nil, "", err + } + listener, err := sockets.NewUnixSocket(path, gid) + if err != nil { + return nil, "", err + } + return listener, path, nil +} + +func fullSocketAddress(address string) (string, error) { + if err := os.MkdirAll(pluginSockDir, 0755); err != nil { + return "", err + } + if filepath.IsAbs(address) { + return address, nil + } + return filepath.Join(pluginSockDir, address+".sock"), nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_nosystemd.go b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_nosystemd.go new file mode 100644 index 000000000..a798b8722 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_nosystemd.go @@ -0,0 +1,10 @@ +// +build linux freebsd +// +build nosystemd + +package sdk + +import "net" + +func setupSocketActivation() (net.Listener, error) { + return nil, nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_systemd.go b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_systemd.go new file mode 100644 index 000000000..5d5d8f427 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_systemd.go @@ -0,0 +1,45 @@ +// +build linux freebsd +// +build !nosystemd + +package sdk + +import ( + "fmt" + "net" + "os" + + "github.com/coreos/go-systemd/activation" +) + +// isRunningSystemd checks whether the host was booted with systemd as its init +// system. This functions similarly to systemd's `sd_booted(3)`: internally, it +// checks whether /run/systemd/system/ exists and is a directory. +// http://www.freedesktop.org/software/systemd/man/sd_booted.html +// +// Copied from github.com/coreos/go-systemd/util.IsRunningSystemd +func isRunningSystemd() bool { + fi, err := os.Lstat("/run/systemd/system") + if err != nil { + return false + } + return fi.IsDir() +} + +func setupSocketActivation() (net.Listener, error) { + if !isRunningSystemd() { + return nil, nil + } + listenFds := activation.Files(false) + if len(listenFds) > 1 { + return nil, fmt.Errorf("expected only one socket from systemd, got %d", len(listenFds)) + } + var listener net.Listener + if len(listenFds) == 1 { + l, err := net.FileListener(listenFds[0]) + if err != nil { + return nil, err + } + listener = l + } + return listener, nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_unsupported.go b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_unsupported.go new file mode 100644 index 000000000..344cf751b --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/unix_listener_unsupported.go @@ -0,0 +1,16 @@ +// +build !linux,!freebsd + +package sdk + +import ( + "errors" + "net" +) + +var ( + errOnlySupportedOnLinuxAndFreeBSD = errors.New("unix socket creation is only supported on Linux and FreeBSD") +) + +func newUnixListener(pluginName string, gid int) (net.Listener, string, error) { + return nil, "", errOnlySupportedOnLinuxAndFreeBSD +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/windows_listener.go b/vendor/github.com/docker/go-plugins-helpers/sdk/windows_listener.go new file mode 100644 index 000000000..b5deaba6d --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/windows_listener.go @@ -0,0 +1,70 @@ +// +build windows + +package sdk + +import ( + "net" + "os" + "syscall" + "unsafe" + + "github.com/Microsoft/go-winio" +) + +// Named pipes use Windows Security Descriptor Definition Language to define ACL. Following are +// some useful definitions. +const ( + // This will set permissions for everyone to have full access + AllowEveryone = "S:(ML;;NW;;;LW)D:(A;;0x12019f;;;WD)" + + // This will set permissions for Service, System, Adminstrator group and account to have full access + AllowServiceSystemAdmin = "D:(A;ID;FA;;;SY)(A;ID;FA;;;BA)(A;ID;FA;;;LA)(A;ID;FA;;;LS)" +) + +func newWindowsListener(address, pluginName, daemonRoot string, pipeConfig *WindowsPipeConfig) (net.Listener, string, error) { + winioPipeConfig := winio.PipeConfig{ + SecurityDescriptor: pipeConfig.SecurityDescriptor, + InputBufferSize: pipeConfig.InBufferSize, + OutputBufferSize: pipeConfig.OutBufferSize, + } + listener, err := winio.ListenPipe(address, &winioPipeConfig) + if err != nil { + return nil, "", err + } + + addr := listener.Addr().String() + + specDir, err := createPluginSpecDirWindows(pluginName, addr, daemonRoot) + if err != nil { + return nil, "", err + } + + spec, err := writeSpecFile(pluginName, addr, specDir, protoNamedPipe) + if err != nil { + return nil, "", err + } + return listener, spec, nil +} + +func windowsCreateDirectoryWithACL(name string) error { + sa := syscall.SecurityAttributes{Length: 0} + sddl := "D:P(A;OICI;GA;;;BA)(A;OICI;GA;;;SY)" + sd, err := winio.SddlToSecurityDescriptor(sddl) + if err != nil { + return &os.PathError{Op: "mkdir", Path: name, Err: err} + } + sa.Length = uint32(unsafe.Sizeof(sa)) + sa.InheritHandle = 1 + sa.SecurityDescriptor = uintptr(unsafe.Pointer(&sd[0])) + + namep, err := syscall.UTF16PtrFromString(name) + if err != nil { + return &os.PathError{Op: "mkdir", Path: name, Err: err} + } + + e := syscall.CreateDirectory(namep, &sa) + if e != nil { + return &os.PathError{Op: "mkdir", Path: name, Err: e} + } + return nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/windows_listener_unsupported.go b/vendor/github.com/docker/go-plugins-helpers/sdk/windows_listener_unsupported.go new file mode 100644 index 000000000..0f5e113c1 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/windows_listener_unsupported.go @@ -0,0 +1,20 @@ +// +build !windows + +package sdk + +import ( + "errors" + "net" +) + +var ( + errOnlySupportedOnWindows = errors.New("named pipe creation is only supported on Windows") +) + +func newWindowsListener(address, pluginName, daemonRoot string, pipeConfig *WindowsPipeConfig) (net.Listener, string, error) { + return nil, "", errOnlySupportedOnWindows +} + +func windowsCreateDirectoryWithACL(name string) error { + return nil +} diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/windows_pipe_config.go b/vendor/github.com/docker/go-plugins-helpers/sdk/windows_pipe_config.go new file mode 100644 index 000000000..256fa3d67 --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/sdk/windows_pipe_config.go @@ -0,0 +1,13 @@ +package sdk + +// WindowsPipeConfig is a helper structure for configuring named pipe parameters on Windows. +type WindowsPipeConfig struct { + // SecurityDescriptor contains a Windows security descriptor in SDDL format. + SecurityDescriptor string + + // InBufferSize in bytes. + InBufferSize int32 + + // OutBufferSize in bytes. + OutBufferSize int32 +} diff --git a/vendor/github.com/docker/go-plugins-helpers/volume/README.md b/vendor/github.com/docker/go-plugins-helpers/volume/README.md new file mode 100644 index 000000000..395aa643f --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/volume/README.md @@ -0,0 +1,36 @@ +# Docker volume extension api. + +Go handler to create external volume extensions for Docker. + +## Usage + +This library is designed to be integrated in your program. + +1. Implement the `volume.Driver` interface. +2. Initialize a `volume.Handler` with your implementation. +3. Call either `ServeTCP` or `ServeUnix` from the `volume.Handler`. + +### Example using TCP sockets: + +```go + d := MyVolumeDriver{} + h := volume.NewHandler(d) + h.ServeTCP("test_volume", ":8080") +``` + +### Example using Unix sockets: + +```go + d := MyVolumeDriver{} + h := volume.NewHandler(d) + u, _ := user.Lookup("root") + gid, _ := strconv.Atoi(u.Gid) + h.ServeUnix("test_volume", gid) +``` + +## Full example plugins + +- https://github.com/calavera/docker-volume-glusterfs +- https://github.com/calavera/docker-volume-keywhiz +- https://github.com/quobyte/docker-volume +- https://github.com/NimbleStorage/Nemo diff --git a/vendor/github.com/docker/go-plugins-helpers/volume/api.go b/vendor/github.com/docker/go-plugins-helpers/volume/api.go new file mode 100644 index 000000000..dcc2f3abf --- /dev/null +++ b/vendor/github.com/docker/go-plugins-helpers/volume/api.go @@ -0,0 +1,230 @@ +package volume + +import ( + "log" + "net/http" + + "github.com/docker/go-plugins-helpers/sdk" +) + +const ( + // DefaultDockerRootDirectory is the default directory where volumes will be created. + DefaultDockerRootDirectory = "/var/lib/docker-volumes" + + manifest = `{"Implements": ["VolumeDriver"]}` + createPath = "/VolumeDriver.Create" + getPath = "/VolumeDriver.Get" + listPath = "/VolumeDriver.List" + removePath = "/VolumeDriver.Remove" + hostVirtualPath = "/VolumeDriver.Path" + mountPath = "/VolumeDriver.Mount" + unmountPath = "/VolumeDriver.Unmount" + capabilitiesPath = "/VolumeDriver.Capabilities" +) + +// CreateRequest is the structure that docker's requests are deserialized to. +type CreateRequest struct { + Name string + Options map[string]string `json:"Opts,omitempty"` +} + +// RemoveRequest structure for a volume remove request +type RemoveRequest struct { + Name string +} + +// MountRequest structure for a volume mount request +type MountRequest struct { + Name string + ID string +} + +// MountResponse structure for a volume mount response +type MountResponse struct { + Mountpoint string +} + +// UnmountRequest structure for a volume unmount request +type UnmountRequest struct { + Name string + ID string +} + +// PathRequest structure for a volume path request +type PathRequest struct { + Name string +} + +// PathResponse structure for a volume path response +type PathResponse struct { + Mountpoint string +} + +// GetRequest structure for a volume get request +type GetRequest struct { + Name string +} + +// GetResponse structure for a volume get response +type GetResponse struct { + Volume *Volume +} + +// ListResponse structure for a volume list response +type ListResponse struct { + Volumes []*Volume +} + +// CapabilitiesResponse structure for a volume capability response +type CapabilitiesResponse struct { + Capabilities Capability +} + +// Volume represents a volume object for use with `Get` and `List` requests +type Volume struct { + Name string + Mountpoint string `json:",omitempty"` + CreatedAt string `json:",omitempty"` + Status map[string]interface{} `json:",omitempty"` +} + +// Capability represents the list of capabilities a volume driver can return +type Capability struct { + Scope string +} + +// ErrorResponse is a formatted error message that docker can understand +type ErrorResponse struct { + Err string +} + +// NewErrorResponse creates an ErrorResponse with the provided message +func NewErrorResponse(msg string) *ErrorResponse { + return &ErrorResponse{Err: msg} +} + +// Driver represent the interface a driver must fulfill. +type Driver interface { + Create(*CreateRequest) error + List() (*ListResponse, error) + Get(*GetRequest) (*GetResponse, error) + Remove(*RemoveRequest) error + Path(*PathRequest) (*PathResponse, error) + Mount(*MountRequest) (*MountResponse, error) + Unmount(*UnmountRequest) error + Capabilities() *CapabilitiesResponse +} + +// Handler forwards requests and responses between the docker daemon and the plugin. +type Handler struct { + driver Driver + sdk.Handler +} + +// NewHandler initializes the request handler with a driver implementation. +func NewHandler(driver Driver) *Handler { + h := &Handler{driver, sdk.NewHandler(manifest)} + h.initMux() + return h +} + +func (h *Handler) initMux() { + h.HandleFunc(createPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers createPath") + req := &CreateRequest{} + err := sdk.DecodeRequest(w, r, req) + if err != nil { + return + } + err = h.driver.Create(req) + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, struct{}{}, false) + }) + h.HandleFunc(removePath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers removePath") + req := &RemoveRequest{} + err := sdk.DecodeRequest(w, r, req) + if err != nil { + return + } + err = h.driver.Remove(req) + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, struct{}{}, false) + }) + h.HandleFunc(mountPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers mountPath") + req := &MountRequest{} + err := sdk.DecodeRequest(w, r, req) + if err != nil { + return + } + res, err := h.driver.Mount(req) + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, res, false) + }) + h.HandleFunc(hostVirtualPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers hostVirtualPath") + req := &PathRequest{} + err := sdk.DecodeRequest(w, r, req) + if err != nil { + return + } + res, err := h.driver.Path(req) + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, res, false) + }) + h.HandleFunc(getPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers getPath") + req := &GetRequest{} + err := sdk.DecodeRequest(w, r, req) + if err != nil { + return + } + res, err := h.driver.Get(req) + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, res, false) + }) + h.HandleFunc(unmountPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers unmountPath") + req := &UnmountRequest{} + err := sdk.DecodeRequest(w, r, req) + if err != nil { + return + } + err = h.driver.Unmount(req) + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, struct{}{}, false) + }) + h.HandleFunc(listPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers listPath") + res, err := h.driver.List() + if err != nil { + sdk.EncodeResponse(w, NewErrorResponse(err.Error()), true) + return + } + sdk.EncodeResponse(w, res, false) + }) + + h.HandleFunc(capabilitiesPath, func(w http.ResponseWriter, r *http.Request) { + log.Println("Entering go-plugins-helpers capabilitiesPath") + sdk.EncodeResponse(w, h.driver.Capabilities(), false) + }) +} |