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filer could detect master nodes healthy status and choose a working one when encountering SPOF

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This commit is contained in:
霍晓栋
2016-06-07 11:38:40 +08:00
parent e20ef8a077
commit 1ef81ac518
2 changed files with 84 additions and 6 deletions
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12
weed/storage/store.go
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@@ -32,14 +32,14 @@ func NewMasterNodes(bootstrapNode string) (mn *MasterNodes) {
mn = &MasterNodes{nodes: []string{bootstrapNode}, lastNode: -1}
return
}
func (mn *MasterNodes) reset() {
func (mn *MasterNodes) Reset() {
glog.V(4).Infof("Resetting master nodes: %v", mn)
if len(mn.nodes) > 1 && mn.lastNode >= 0 {
glog.V(0).Infof("Reset master %s from: %v", mn.nodes[mn.lastNode], mn.nodes)
mn.lastNode = -mn.lastNode - 1
}
}
func (mn *MasterNodes) findMaster() (string, error) {
func (mn *MasterNodes) FindMaster() (string, error) {
if len(mn.nodes) == 0 {
return "", errors.New("No master node found!")
}
@@ -210,7 +210,7 @@ func (s *Store) SetBootstrapMaster(bootstrapMaster string) {
s.masterNodes = NewMasterNodes(bootstrapMaster)
}
func (s *Store) SendHeartbeatToMaster() (masterNode string, secretKey security.Secret, e error) {
masterNode, e = s.masterNodes.findMaster()
masterNode, e = s.masterNodes.FindMaster()
if e != nil {
return
}
@@ -270,17 +270,17 @@ func (s *Store) SendHeartbeatToMaster() (masterNode string, secretKey security.S
jsonBlob, err := util.PostBytes(joinUrl, data)
if err != nil {
s.masterNodes.reset()
s.masterNodes.Reset()
return "", "", err
}
var ret operation.JoinResult
if err := json.Unmarshal(jsonBlob, &ret); err != nil {
glog.V(0).Infof("Failed to join %s with response: %s", joinUrl, string(jsonBlob))
s.masterNodes.reset()
s.masterNodes.Reset()
return masterNode, "", err
}
if ret.Error != "" {
s.masterNodes.reset()
s.masterNodes.Reset()
return masterNode, "", errors.New(ret.Error)
}
s.volumeSizeLimit = ret.VolumeSizeLimit