mirror of
https://github.com/vbatts/imgsrv.git
synced 2024-12-28 08:36:29 +00:00
refactored for Mongo::GridFS. It almost works
This commit is contained in:
Vincent Batts
parent
9fdcddcfb6
commit
a2f39ef4d1
1 changed files with 87 additions and 93 deletions
180
imgsrv.go
180
imgsrv.go
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@ -19,7 +19,7 @@ import (
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"os"
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"strings"
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"time"
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"errors"
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//"errors"
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"mime"
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"crypto/md5"
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@ -43,10 +43,9 @@ var (
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MongoCollectionData = "data"
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MongoCollectionImages = "data"
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MSession *mgo.Session
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MongoImagesDb *mgo.Database
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Mgfs *mgo.GridFS
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McImages *mgo.Collection
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mongo_session *mgo.Session
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images_db *mgo.Database
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gfs *mgo.GridFS
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DefaultRemoteHost = ""
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RemoteHost = DefaultRemoteHost
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@ -57,44 +56,35 @@ var (
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type Info struct {
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Keywords []string // tags
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MimeType string // maybe preserve the type provided?
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Ip string // who uploaded it
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Date time.Time // when?
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}
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type ImgFile struct {
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Metadata Info ",omitempty"
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Md5 string
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ChunkSize int
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UploadDate time.Time
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Length int64
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Filename string ",omitempty"
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ContentType string "contentType,omitempty"
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}
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/* Check whether this Image filename is on Mongo */
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func hasImageByFilename(filename string) (exists bool, err error) {
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query := McImages.Find(bson.M{"filename": filename})
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c, err := query.Count()
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c, err := gfs.Find(bson.M{"filename": filename}).Count()
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if (err != nil) {
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return false, err
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}
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exists = (c > 0)
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return exists, nil
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}
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func hasImage(i Image) (exists bool, err error) {
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exists, err = hasImageByFilename(i.Filename)
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return
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}
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func saveImage(i Image) (err error) {
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exists, err := hasImage(i)
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func getImage(filename string) (img ImgFile, err error) {
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err = gfs.Find(bson.M{"filename":filename}).One(&img)
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if (err != nil) {
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return
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return img, err
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}
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if (exists) {
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return errors.New("Image Filename Exists")
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}
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err = McImages.Insert(i)
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return
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}
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func getImage(filename string) (i Image, err error) {
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err = McImages.Find(bson.M{"filename":filename}).One(&i)
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if (err != nil) {
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return i, err
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}
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return i, nil
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return img, nil
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}
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@ -184,6 +174,13 @@ func getSmallHash() (small_hash string) {
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return fmt.Sprintf("%X", h.Sum(nil))
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}
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func returnErr(w http.ResponseWriter, r *http.Request, e error) {
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LogRequest(r,503)
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fmt.Fprintf(w,"Error fetching image: %s", e)
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http.Error(w, "Service Unavailable", 503)
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return
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}
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/*
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GET /i/
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GET /i/:name
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@ -198,16 +195,17 @@ func routeImagesGET(w http.ResponseWriter, r *http.Request) {
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}
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if (len(uriChunks) == 2 && len(uriChunks[1]) > 0) {
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query, err := Mgfs.Find(bson.M{"metadata": uriChunks[1] })
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log.Printf("Searching for [%s] ...", uriChunks[1])
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query := gfs.Find(bson.M{"metadata": bson.M{"filename": uriChunks[1] } })
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c, err := query.Count()
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// preliminary checks, if they've passed an image name
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if (err != nil) {
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LogRequest(r,503)
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fmt.Fprintf(w,"Error fetching image: %s", err)
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http.Error(w, "Service Unavailable", 503)
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returnErr(w,r,err)
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return
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}
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if (query.Count() == 0) {
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log.Printf("Results for [%s] = %d", uriChunks[1], c)
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if (c == 0) {
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LogRequest(r,404)
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http.NotFound(w,r)
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return
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@ -218,12 +216,9 @@ func routeImagesGET(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Cache-Control", "max-age=315360000")
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w.WriteHeader(http.StatusOK)
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file, err := Mgfs.Open(uriChunks[1])
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file, err := gfs.Open(uriChunks[1])
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if (err != nil) {
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log.Println(err)
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LogRequest(r,503)
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fmt.Fprintf(w,"Error fetching image: %s", uriChunks[1])
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http.Error(w, "Service Unavailable", 503)
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returnErr(w,r,err)
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return
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}
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@ -251,20 +246,20 @@ func routeImagesPOST(w http.ResponseWriter, r *http.Request) {
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return
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}
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var i Info
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i.Date = bson.Now()
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i.Ip = r.RemoteAddr
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var filename string
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info := Info{
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Ip: r.RemoteAddr,
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}
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if (len(uriChunks) == 2 && len(uriChunks[1]) != 0) {
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i.Filename = uriChunks[1]
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filename = uriChunks[1]
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}
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params := parseRawQuery(r.URL.RawQuery)
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var p_ext string
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for k,v := range params {
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switch {
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case (k == "filename"):
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i.Filename = v
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filename = v
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case (k == "ext"):
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if (v[0] != '.') {
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p_ext = fmt.Sprintf(".%s", v)
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@ -272,52 +267,51 @@ func routeImagesPOST(w http.ResponseWriter, r *http.Request) {
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p_ext = v
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}
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case (k == "k" || k == "key" || k == "keyword"):
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i.Keywords = append(i.Keywords[:], v)
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info.Keywords = append(info.Keywords[:], v)
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case (k == "keys" || k == "keywords"):
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for _, key := range strings.Split(v, ",") {
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i.Keywords = append(i.Keywords[:], key)
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info.Keywords = append(info.Keywords[:], key)
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}
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}
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}
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if (len(i.Filename) == 0) {
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if (len(filename) == 0) {
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str := getSmallHash()
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if (len(p_ext) == 0) {
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i.Filename = fmt.Sprintf("%s.jpg", str)
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filename = fmt.Sprintf("%s.jpg", str)
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} else {
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i.Filename = fmt.Sprintf("%s%s", str, p_ext)
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filename = fmt.Sprintf("%s%s", str, p_ext)
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}
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}
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err := saveImage(i)
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if (err != nil && err.Error() != "Image Filename Exists") {
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file, err := Mgfs.Create(i.Filename)
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exists, err := hasImageByFilename(filename)
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if (err == nil && !exists) {
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file, err := gfs.Create(filename)
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if (err != nil) {
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LogRequest(r,503)
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fmt.Fprintf(w,"Error fetching image: %s", err)
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http.Error(w, "Service Unavailable", 503)
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returnErr(w,r,err)
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return
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}
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n, err := io.Copy(file, r.Body)
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if (err != nil) {
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LogRequest(r,503)
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fmt.Fprintf(w,"Error fetching image: %s", err)
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http.Error(w, "Service Unavailable", 503)
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returnErr(w,r,err)
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return
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}
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if (n != r.ContentLength) {
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log.Printf("WARNING: [%s] content-length (%d), content written (%d)",
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i.Filename,
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filename,
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r.ContentLength,
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n)
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}
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file.Close()
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} else if (exists) {
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log.Printf("[%s] already exists", filename)
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} else {
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log.Printf("%s: %s", err, i.Filename)
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returnErr(w,r,err)
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return
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}
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io.WriteString(w,
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fmt.Sprintf("%s%s/i/%s\n", r.URL.Scheme, r.URL.Host, i.Filename))
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fmt.Sprintf("%s%s/i/%s\n", r.URL.Scheme, r.URL.Host, filename))
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LogRequest(r,200)
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}
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@ -358,14 +352,14 @@ func routeRoot(w http.ResponseWriter, r *http.Request) {
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// Show a page of most recent images, and tags, and uploaders ...
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w.Header().Set("Content-Type", "text/html")
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var i Image
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iter := McImages.Find(bson.M{"date": bson.M{"$gt": time.Now().Add(-time.Hour)}}).Limit(10).Iter()
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fmt.Fprintf(w, "<li>\n")
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for iter.Next(&i) {
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log.Println(i.Filename)
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fmt.Fprintf(w, "<ul>%s</ul>\n", linkToImage("", i.Filename))
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var img ImgFile
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iter := gfs.Find(bson.M{"uploadDate": bson.M{"$gt": time.Now().Add(-time.Hour)}}).Limit(10).Iter()
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fmt.Fprintf(w, "<ul>\n")
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for iter.Next(&img) {
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log.Println(img.Filename)
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fmt.Fprintf(w, "<li>%s</li>\n", linkToImage("", img.Filename))
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}
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fmt.Fprintf(w, "</li>\n")
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fmt.Fprintf(w, "</ul>\n")
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}
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func routeAll(w http.ResponseWriter, r *http.Request) {
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@ -374,16 +368,18 @@ func routeAll(w http.ResponseWriter, r *http.Request) {
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http.NotFound(w,r)
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return
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}
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// Show a page of all the images
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var i Image
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iter := McImages.Find(bson.M{"date": bson.M{"$gt": time.Now().Add(-time.Hour)}}).Limit(10).Iter()
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fmt.Fprintf(w, "<li>\n")
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for iter.Next(&i) {
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log.Println(i.Filename)
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fmt.Fprintf(w, "<ul>%s</ul>\n", linkToImage("", i.Filename))
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w.Header().Set("Content-Type", "text/html")
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var img ImgFile
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// Show a page of all the images
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iter := gfs.Find(nil).Iter()
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fmt.Fprintf(w, "<ul>\n")
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for iter.Next(&img) {
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log.Println(img.Filename)
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fmt.Fprintf(w, "<li>%s</li>\n", linkToImage("", img.Filename))
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}
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fmt.Fprintf(w, "</li>\n")
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fmt.Fprintf(w, "</ul>\n")
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}
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/*
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@ -397,7 +393,7 @@ func routeAll(w http.ResponseWriter, r *http.Request) {
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*/
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func routeKeywords(w http.ResponseWriter, r *http.Request) {
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uriChunks := chunkURI(r.URL.Path)
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if (r.Method != "GET" ||
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if (r.Method != "GET" ||
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len(uriChunks) > 3 ||
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(len(uriChunks) == 3 && uriChunks[2] != "r")) {
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LogRequest(r,404)
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@ -409,23 +405,23 @@ func routeKeywords(w http.ResponseWriter, r *http.Request) {
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params := parseRawQuery(r.URL.RawQuery)
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log.Printf("K: params: %s", params)
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var i Image
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var img ImgFile
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if (len(uriChunks) == 1) {
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// show a sorted list of tag name links
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iter := McImages.Find(bson.M{"keywords": uriChunks[1]}).Sort("$natural").Limit(100).Iter()
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iter := gfs.Find(bson.M{"metadata": bson.M{"keywords": uriChunks[1] } }).Sort("$natural").Limit(100).Iter()
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fmt.Fprintf(w, "<li>\n")
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for iter.Next(&i) {
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log.Println(i.Filename)
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fmt.Fprintf(w, "<ul>%s</ul>\n", linkToImage("", i.Filename))
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for iter.Next(&img) {
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log.Println(img.Filename)
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fmt.Fprintf(w, "<ul>%s</ul>\n", linkToImage("", img.Filename))
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}
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fmt.Fprintf(w, "</li>\n")
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} else if (len(uriChunks) == 2) {
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iter := McImages.Find(bson.M{"keywords": uriChunks[1]}).Limit(10).Iter()
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iter := gfs.Find(bson.M{"metadata": bson.M{"keywords": uriChunks[1] } }).Limit(10).Iter()
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fmt.Fprintf(w, "<li>\n")
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for iter.Next(&i) {
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log.Println(i.Filename)
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fmt.Fprintf(w, "<ul>%s</ul>\n", linkToImage("", i.Filename))
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for iter.Next(&img) {
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log.Println(img.Filename)
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fmt.Fprintf(w, "<ul>%s</ul>\n", linkToImage("", img.Filename))
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}
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fmt.Fprintf(w, "</li>\n")
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} else if (uriChunks[2] == "r") {
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@ -445,14 +441,12 @@ func routeIPs(w http.ResponseWriter, r *http.Request) {
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}
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func initMongo() {
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MSession, err := mgo.Dial(MongoHost)
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mongo_session, err := mgo.Dial(MongoHost)
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if err != nil {
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log.Panic(err)
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}
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MongoImagesDb = MSession.DB(MongoDB)
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Mgfs = MongoImagesDb.GridFS("fs")
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McImages = MongoImagesDb.C(MongoCollectionImages)
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images_db = mongo_session.DB(MongoDB)
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gfs = images_db.GridFS("fs")
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}
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/* Run as the image server */
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@ -460,7 +454,7 @@ func runServer(ip, port string) {
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var addr = fmt.Sprintf("%s:%s", ip, port)
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initMongo()
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defer MSession.Close()
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defer mongo_session.Close()
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http.HandleFunc("/", routeRoot)
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http.HandleFunc("/all", routeAll)
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