Refit source files to have a public xs-apiv1 lib package.

[src/xds/xds-server.git] / lib / xdsserver / folder-pathmap.go

diff --git a/lib/xdsserver/folder-pathmap.go b/lib/xdsserver/folder-pathmap.go
new file mode 100644 (file)
index 0000000..c5318de
--- /dev/null
+++ b/lib/xdsserver/folder-pathmap.go
@@ -0,0 +1,175 @@
+package xdsserver
+
+import (
+       "fmt"
+       "io/ioutil"
+       "os"
+       "path/filepath"
+       "strings"
+
+       common "github.com/iotbzh/xds-common/golib"
+       "github.com/iotbzh/xds-server/lib/xsapiv1"
+       uuid "github.com/satori/go.uuid"
+)
+
+// IFOLDER interface implementation for native/path mapping folders
+
+// PathMap .
+type PathMap struct {
+       *Context
+       config xsapiv1.FolderConfig
+}
+
+// NewFolderPathMap Create a new instance of PathMap
+func NewFolderPathMap(ctx *Context) *PathMap {
+       f := PathMap{
+               Context: ctx,
+               config: xsapiv1.FolderConfig{
+                       Status: xsapiv1.StatusDisable,
+               },
+       }
+       return &f
+}
+
+// NewUID Get a UUID
+func (f *PathMap) NewUID(suffix string) string {
+       uuid := uuid.NewV1().String()
+       if len(suffix) > 0 {
+               uuid += "_" + suffix
+       }
+       return uuid
+}
+
+// Add a new folder
+func (f *PathMap) Add(cfg xsapiv1.FolderConfig) (*xsapiv1.FolderConfig, error) {
+       if cfg.DataPathMap.ServerPath == "" {
+               return nil, fmt.Errorf("ServerPath must be set")
+       }
+
+       // Use shareRootDir if ServerPath is a relative path
+       dir := cfg.DataPathMap.ServerPath
+       if !filepath.IsAbs(dir) {
+               dir = filepath.Join(f.Config.FileConf.ShareRootDir, dir)
+       }
+
+       // Sanity check
+       if !common.Exists(dir) {
+               // try to create if not existing
+               if err := os.MkdirAll(dir, 0755); err != nil {
+                       return nil, fmt.Errorf("Cannot create ServerPath directory: %s", dir)
+               }
+       }
+       if !common.Exists(dir) {
+               return nil, fmt.Errorf("ServerPath directory is not accessible: %s", dir)
+       }
+
+       f.config = cfg
+       f.config.RootPath = dir
+       f.config.DataPathMap.ServerPath = dir
+       f.config.IsInSync = true
+
+       // Verify file created by XDS agent when needed
+       if cfg.DataPathMap.CheckFile != "" {
+               errMsg := "ServerPath sanity check error (%d): %v"
+               ckFile := f.ConvPathCli2Svr(cfg.DataPathMap.CheckFile)
+               if !common.Exists(ckFile) {
+                       return nil, fmt.Errorf(errMsg, 1, "file not present")
+               }
+               if cfg.DataPathMap.CheckContent != "" {
+                       fd, err := os.OpenFile(ckFile, os.O_APPEND|os.O_RDWR, 0600)
+                       if err != nil {
+                               return nil, fmt.Errorf(errMsg, 2, err)
+                       }
+                       defer fd.Close()
+
+                       // Check specific message written by agent
+                       content, err := ioutil.ReadAll(fd)
+                       if err != nil {
+                               return nil, fmt.Errorf(errMsg, 3, err)
+                       }
+                       if string(content) != cfg.DataPathMap.CheckContent {
+                               return nil, fmt.Errorf(errMsg, 4, "file content differ")
+                       }
+
+                       // Write a specific message that will be check back on agent side
+                       msg := "Pathmap checked message written by xds-server ID: " + f.Config.ServerUID + "\n"
+                       if n, err := fd.WriteString(msg); n != len(msg) || err != nil {
+                               return nil, fmt.Errorf(errMsg, 5, err)
+                       }
+               }
+       }
+
+       f.config.Status = xsapiv1.StatusEnable
+
+       return &f.config, nil
+}
+
+// GetConfig Get public part of folder config
+func (f *PathMap) GetConfig() xsapiv1.FolderConfig {
+       return f.config
+}
+
+// GetFullPath returns the full path of a directory (from server POV)
+func (f *PathMap) GetFullPath(dir string) string {
+       if &dir == nil {
+               return f.config.DataPathMap.ServerPath
+       }
+       return filepath.Join(f.config.DataPathMap.ServerPath, dir)
+}
+
+// ConvPathCli2Svr Convert path from Client to Server
+func (f *PathMap) ConvPathCli2Svr(s string) string {
+       if f.config.ClientPath != "" && f.config.DataPathMap.ServerPath != "" {
+               return strings.Replace(s,
+                       f.config.ClientPath,
+                       f.config.DataPathMap.ServerPath,
+                       -1)
+       }
+       return s
+}
+
+// ConvPathSvr2Cli Convert path from Server to Client
+func (f *PathMap) ConvPathSvr2Cli(s string) string {
+       if f.config.ClientPath != "" && f.config.DataPathMap.ServerPath != "" {
+               return strings.Replace(s,
+                       f.config.DataPathMap.ServerPath,
+                       f.config.ClientPath,
+                       -1)
+       }
+       return s
+}
+
+// Remove a folder
+func (f *PathMap) Remove() error {
+       // nothing to do
+       return nil
+}
+
+// Update update some fields of a folder
+func (f *PathMap) Update(cfg xsapiv1.FolderConfig) (*xsapiv1.FolderConfig, error) {
+       if f.config.ID != cfg.ID {
+               return nil, fmt.Errorf("Invalid id")
+       }
+       f.config = cfg
+       return &f.config, nil
+}
+
+// RegisterEventChange requests registration for folder change event
+func (f *PathMap) RegisterEventChange(cb *FolderEventCB, data *FolderEventCBData) error {
+       return nil
+}
+
+// UnRegisterEventChange remove registered callback
+func (f *PathMap) UnRegisterEventChange() error {
+       return nil
+}
+
+// Sync Force folder files synchronization
+func (f *PathMap) Sync() error {
+       return nil
+}
+
+// IsInSync Check if folder files are in-sync
+func (f *PathMap) IsInSync() (bool, error) {
+       return true, nil
+}