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package operation
import (
"encoding/json"
"errors"
"fmt"
"net/url"
"strconv"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/util"
)
type AssignResult struct {
Fid string `json:"fid,omitempty"`
Url string `json:"url,omitempty"`
PublicUrl string `json:"publicUrl,omitempty"`
Count uint64 `json:"count,omitempty"`
Error string `json:"error,omitempty"`
}
/*
options params meaning:
options[0] main data Center
options[1] main rack
options[2] main data node
*/
func Assign(server string, count uint64, replication string, collection string, ttl string, options ...string) (*AssignResult, error) {
values := make(url.Values)
values.Add("count", strconv.FormatUint(count, 10))
if replication != "" {
values.Add("replication", replication)
}
if collection != "" {
values.Add("collection", collection)
}
if ttl != "" {
values.Add("ttl", ttl)
}
var dataCenter, rack, dataNode string
switch len(options) {
case 1:
dataCenter = options[0]
case 2:
dataCenter = options[0]
rack = options[1]
case 3:
dataCenter = options[0]
rack = options[1]
dataNode = options[2]
default:
}
if dataCenter != "" {
values.Add("dataCenter", dataCenter)
}
if rack != "" {
values.Add("rack", rack)
}
if dataNode != "" {
values.Add("dataNode", dataNode)
}
jsonBlob, err := util.Post("http://"+server+"/dir/assign", values)
glog.V(2).Info("assign result :", string(jsonBlob))
if err != nil {
return nil, err
}
var ret AssignResult
err = json.Unmarshal(jsonBlob, &ret)
if err != nil {
return nil, fmt.Errorf("/dir/assign result JSON unmarshal error:%v, json:%s", err, string(jsonBlob))
}
if ret.Count <= 0 {
return nil, errors.New(ret.Error)
}
return &ret, nil
}
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