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52 lines
1.2 KiB
52 lines
1.2 KiB
package operation
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import (
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"code.google.com/p/weed-fs/go/storage"
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"code.google.com/p/weed-fs/go/util"
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"encoding/json"
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"errors"
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_ "fmt"
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"net/url"
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)
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type Location struct {
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Url string `json:"url"`
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PublicUrl string `json:"publicUrl"`
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}
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type LookupResult struct {
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Locations []Location `json:"locations"`
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Error string `json:"error"`
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}
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func Lookup(server string, vid storage.VolumeId) (*LookupResult, error) {
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values := make(url.Values)
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values.Add("volumeId", vid.String())
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jsonBlob, err := util.Post("http://"+server+"/dir/lookup", values)
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if err != nil {
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return nil, err
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}
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var ret LookupResult
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err = json.Unmarshal(jsonBlob, &ret)
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if err != nil {
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return nil, err
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}
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if ret.Error != "" {
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return nil, errors.New(ret.Error)
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}
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return &ret, nil
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}
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func LookupFileId(server string, fileId string) (fullUrl string, err error) {
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fid, parseErr := storage.ParseFileId(fileId)
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if parseErr != nil {
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return "", parseErr
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}
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lookup, lookupError := Lookup(server, fid.VolumeId)
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if lookupError != nil {
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return "", lookupError
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}
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if len(lookup.Locations) == 0 {
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return "", errors.New("File Not Found")
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}
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return "http://" + lookup.Locations[0].PublicUrl + "/" + fileId, nil
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}
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