mirror of https://github.com/vbatts/imgsrv.git
61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
package main
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import (
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"github.com/vbatts/imgsrv/hash"
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"github.com/vbatts/imgsrv/types"
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"labix.org/v2/mgo/bson"
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)
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/* gfs is a *mgo.GridFS defined in imgsrv.go */
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func GetFileByFilename(filename string) (this_file types.File, err error) {
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err = gfs.Find(bson.M{"filename": filename}).One(&this_file)
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if err != nil {
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return this_file, err
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}
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return this_file, nil
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}
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func GetFileRandom() (this_file types.File, err error) {
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r := hash.Rand64()
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err = gfs.Find(bson.M{"random": bson.M{"$gt": r}}).One(&this_file)
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if err != nil {
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return this_file, err
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}
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if len(this_file.Md5) == 0 {
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err = gfs.Find(bson.M{"random": bson.M{"$lt": r}}).One(&this_file)
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}
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if err != nil {
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return this_file, err
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}
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return this_file, nil
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}
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/* Check whether this types.File filename is on Mongo */
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func HasFileByFilename(filename string) (exists bool, err error) {
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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 HasFileByMd5(md5 string) (exists bool, err error) {
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c, err := gfs.Find(bson.M{"md5": md5}).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 HasFileByKeyword(keyword string) (exists bool, err error) {
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c, err := gfs.Find(bson.M{"metadata": bson.M{"keywords": keyword}}).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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