seaweedfs/go/operation/list_masters.go

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package operation
import (
"code.google.com/p/weed-fs/go/glog"
"code.google.com/p/weed-fs/go/util"
"encoding/json"
)
type ClusterStatusResult struct {
IsLeader bool `json:"IsLeader,omitempty"`
Leader string `json:"Leader,omitempty"`
Peers []string `json:"Peers,omitempty"`
}
func ListMasters(server string) ([]string, error) {
jsonBlob, err := util.Get("http://" + server + "/cluster/status")
glog.V(2).Info("list masters result :", string(jsonBlob))
if err != nil {
return nil, err
}
var ret ClusterStatusResult
err = json.Unmarshal(jsonBlob, &ret)
if err != nil {
return nil, err
}
masters := ret.Peers
if ret.IsLeader {
masters = append(masters, ret.Leader)
}
return masters, nil
}