func getFS(c context.Context, mnt string) fsi.FileSystem {
var fs fsi.FileSystem
switch whichType {
case 0:
// must be re-instantiated for each request
dsFileSys := dsfs.New(dsfs.MountName(mnt), dsfs.AeContext(c))
fs = fsi.FileSystem(dsFileSys)
case 1:
fs = fsi.FileSystem(osFileSys)
case 2:
// re-instantiation would delete everything
fs = fsi.FileSystem(memMapFileSys)
default:
panic("invalid whichType ")
}
return fs
}
func GetFS(c context.Context, whichType int) (fs fsi.FileSystem) {
switch whichType {
case 0:
// re-instantiation would delete contents
fs = fsi.FileSystem(memMapFileSys)
case 1:
// must be re-instantiated for each request
dsFileSys := dsfs.New(dsfs.DirSort("byDateDesc"), dsfs.MountName("mntTest"), dsfs.AeContext(c))
fs = fsi.FileSystem(dsFileSys)
case 2:
osFileSys := osfs.New(osfs.DirSort("byDateDesc"))
fs = fsi.FileSystem(osFileSys)
os.Chdir(logDir)
default:
panic("invalid whichType ")
}
return
}
// GetFS instantiates a filesystem, depending on whichtype
func GetFS(c context.Context) (fs fsi.FileSystem) {
switch whichType {
case 0:
// must be re-instantiated for each request
docRoot = ""
dsFileSys := dsfs.New(dsfs.DirSort("byDateDesc"), dsfs.MountName(mountName), dsfs.AeContext(c))
fs = fsi.FileSystem(dsFileSys)
case 1:
docRoot = "c:/docroot/"
os.Chdir(docRoot)
osFileSys := osfs.New(osfs.DirSort("byDateDesc"))
fs = fsi.FileSystem(osFileSys)
case 2:
// re-instantiation would delete contents
docRoot = ""
fs = fsi.FileSystem(memMapFileSys)
default:
panic("invalid whichType ")
}
return
}
func init() {
// forcing our implementations
// to comply with our interfaces
f := DsFile{}
ifa := fsi.File(&f)
_ = ifa
ifi := os.FileInfo(&f)
_ = ifi
fs := dsFileSys{}
ifs := fsi.FileSystem(&fs)
_ = ifs
}
func init() {
// forcing our implementations
// to comply with our interfaces
f := InMemoryFile{}
ifa := fsi.File(&f)
_ = ifa
fi := InMemoryFileInfo{}
ifi := os.FileInfo(&fi)
_ = ifi
fs := memMapFs{}
ifs := fsi.FileSystem(&fs)
_ = ifs
}
func init() {
// forcing our implementations
// to comply with our interfaces
f := os.File{}
ifa := fsi.File(&f)
_ = ifa
var fi os.FileInfo
ifi := os.FileInfo(fi) // of course idiotic, but we keep the pattern
_ = ifi
fs := osFileSys{}
ifs := fsi.FileSystem(&fs)
_ = ifs
}
func receiveUpload(w http.ResponseWriter, r *http.Request, m map[string]interface{}) {
lg, _ := loghttp.Logger(w, r)
c := appengine.NewContext(r)
// parsing multipart before anything else
err := r.ParseMultipartForm(1024 * 1024 * 2)
if err != nil {
lg("Multipart parsing failed: %v", err)
return
}
wpf(w, tplx.ExecTplHelper(tplx.Head, map[string]interface{}{"HtmlTitle": "Receive an Upload"}))
defer wpf(w, tplx.Foot)
wpf(w, "<pre>")
defer wpf(w, "</pre>")
fields := []string{"getparam1", "mountname", "description"}
for _, v := range fields {
lg("%12v => %q", v, r.FormValue(v))
}
mountPoint := dsfs.MountPointLast()
if len(r.FormValue("mountname")) > 0 {
mountPoint = r.FormValue("mountname")
}
lg("mount point is %v", mountPoint)
fs1 := dsfs.New(
dsfs.MountName(mountPoint),
dsfs.AeContext(c),
)
// As closure, since we cannot define dsfs.dsFileSys as parameter
funcSave := func(argName string, data []byte) (error, *bytes.Buffer) {
b1 := new(bytes.Buffer)
fs1 := dsfs.New(
dsfs.MountName(mountPoint),
dsfs.AeContext(c),
)
dir, bname := fs1.SplitX(argName)
err := fs1.MkdirAll(dir, 0777)
wpf(b1, "mkdir %v - %v\n", dir, err)
if err != nil {
return err, b1
}
err = fs1.WriteFile(path.Join(dir, bname), data, 0777)
wpf(b1, "saved file content to %v - %v\n", argName, err)
return err, b1
}
ff := "filefield"
file, handler, err := r.FormFile(ff)
if err != nil {
lg("error calling FormFile from %q => %v", ff, err)
return
}
if handler == nil {
lg("no multipart file %q", ff)
} else {
lg("extracted file %v", handler.Filename)
data, err := ioutil.ReadAll(file)
if err != nil {
lg("ReadAll on uploaded file failed: %v", err)
return
}
defer file.Close()
lg("extracted file content; %v bytes", len(data))
newFilename := docRootDataStore + handler.Filename
ext := path.Ext(newFilename)
if ext == ".zip" {
lg("found zip - treat as dir-tree %q", newFilename)
r, err := zip.NewReader(file, int64(len(data)))
if err != nil {
lg("open as zip failed: %v", err)
return
}
for _, f := range r.File {
newFilename = docRootDataStore + f.Name
dir, bname := fs1.SplitX(newFilename)
if f.FileInfo().IsDir() {
lg("\t dir %s", newFilename)
err := fs1.MkdirAll(path.Join(dir, bname), 0777)
if err != nil {
lg("MkdirAll %v failed: %v", newFilename, err)
return
}
} else {
lg("\t file %s", newFilename)
rc, err := f.Open()
if err != nil {
return
}
defer func(rc io.ReadCloser) {
if err := rc.Close(); err != nil {
panic(err)
}
}(rc)
bts := new(bytes.Buffer)
size, err := io.Copy(bts, rc)
if err != nil {
lg("Could not copy from zipped file %v: %v", newFilename, err)
return
}
err = common.WriteFile(fsi.FileSystem(fs1), path.Join(dir, bname), bts.Bytes())
// err = fs1.WriteFile(path.Join(dir, bname), bts.Bytes(), 0777)
if err != nil {
lg("WriteFile of zipped file %v failed: %v", newFilename, err)
return
}
lg("\t saved %v - %v Bytes", newFilename, size)
}
}
} else {
err, b2 := funcSave(newFilename, data)
lg("%s", b2)
if err != nil {
return
}
}
errMc := memcache.Flush(appengine.NewContext(r))
if errMc != nil {
lg("Error flushing memache: %v", errMc)
return
}
lg("--------------------\n")
}
}
"net/http"
"github.com/pbberlin/tools/net/http/routes"
"github.com/pbberlin/tools/os/fsi"
"github.com/pbberlin/tools/os/fsi/httpfs"
"github.com/pbberlin/tools/os/fsi/memfs"
)
// parallel fetchers routines
const numWorkers = 3
var docRoot = "" // no relative path, 'cause working dir too flippant
var whichType = 0 // which type of filesystem, default is dsfs
var memMapFileSys = memfs.New(memfs.DirSort("byDateDesc")) // package variable required as "persistence"
var httpFSys = &httpfs.HttpFs{SourceFs: fsi.FileSystem(memMapFileSys)} // memMap is always ready
var fileserver1 = http.FileServer(httpFSys.Dir(docRoot))
const mountName = "mntftch"
const uriSetType = "/fetch/set-fs-type"
const UriMountNameY = "/" + mountName + "/serve-file/"
const uriFetchCommandReceiver = "/fetch/command-receive"
const uriFetchCommandSender = "/fetch/command-send"
var RepoURL = routes.AppHost() + UriMountNameY
var msg = []byte(`<p>This is an embedded static http server.</p>
<p>
It serves previously downloaded pages<br>