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scaleionode.go
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scaleionode.go
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package common
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"strings"
"time"
log "github.com/Sirupsen/logrus"
xplatform "github.com/dvonthenen/goxplatform"
config "github.com/codedellemc/scaleio-framework/scaleio-executor/config"
types "github.com/codedellemc/scaleio-framework/scaleio-scheduler/types"
)
//ScaleioNode implementation for ScaleIO Node
type ScaleioNode struct {
Config *config.Config
RebootRequired bool
Node *types.ScaleIONode
State *types.ScaleIOFramework
GetState RetrieveState
}
//GetSelfNode returns myself
func (bsn *ScaleioNode) GetSelfNode() *types.ScaleIONode {
return bsn.Node
}
//UpdateScaleIOState updates the state of the framework
func (bsn *ScaleioNode) UpdateScaleIOState() *types.ScaleIOFramework {
bsn.State = WaitForStableState(bsn.GetState)
bsn.Node = GetSelfNode(bsn.State, bsn.Config.ExecutorID)
return bsn.State
}
//UpdateNodeState this function tells the scheduler that the executor's state
//has changed
func (bsn *ScaleioNode) UpdateNodeState(nodeState int) error {
log.Debugln("NotifyNodeState ENTER")
log.Debugln("State:", nodeState)
url := bsn.State.SchedulerAddress + "/api/node/state"
state := &types.UpdateNode{
Acknowledged: false,
ExecutorID: bsn.Config.ExecutorID,
State: nodeState,
}
response, err := json.MarshalIndent(state, "", " ")
if err != nil {
log.Errorln("Failed to marshall state object:", err)
log.Debugln("NotifyNodeState LEAVE")
return err
}
req, err := http.NewRequest("POST", url, bytes.NewBuffer(response))
if err != nil {
log.Errorln("Failed to create new HTTP request:", err)
log.Debugln("NotifyNodeState LEAVE")
return err
}
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
log.Errorln("Failed to make HTTP call:", err)
log.Debugln("NotifyNodeState LEAVE")
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(io.LimitReader(resp.Body, 1048576))
if err != nil {
log.Errorln("Failed to read the HTTP Body:", err)
log.Debugln("NotifyNodeState LEAVE")
return err
}
log.Debugln("response Status:", resp.Status)
log.Debugln("response Headers:", resp.Header)
log.Debugln("response Body:", string(body))
var newstate types.UpdateNode
err = json.Unmarshal(body, &newstate)
if err != nil {
log.Errorln("Failed to unmarshal the UpdateState object:", err)
log.Debugln("NotifyNodeState LEAVE")
return err
}
log.Debugln("Acknowledged:", newstate.Acknowledged)
log.Debugln("ExecutorID:", newstate.ExecutorID)
log.Debugln("State:", newstate.State)
if !newstate.Acknowledged {
log.Errorln("Failed to receive an acknowledgement")
log.Debugln("NotifyNodeState LEAVE")
return ErrStateChangeNotAcknowledged
}
log.Errorln("NotifyNodeState Succeeded")
log.Debugln("NotifyNodeState LEAVE")
return nil
}
func isInList(haystack []string, needle string) bool {
for _, item := range haystack {
if strings.Contains(item, needle) {
return true
}
}
return false
}
//UpdateDevices this function tells the scheduler which devices to add
func (bsn *ScaleioNode) UpdateDevices() error {
log.Debugln("UpdateDevices ENTER")
if bsn.GetSelfNode().Imperative {
log.Debugln("Imperative = TRUE. Skip discovering new devices.")
log.Debugln("UpdateDevices LEAVE")
return nil
}
url := bsn.State.SchedulerAddress + "/api/node/device"
state := &types.UpdateDevices{
Acknowledged: false,
ExecutorID: bsn.Config.ExecutorID,
}
deviceList, errList := xplatform.GetInstance().Sys.GetDeviceList()
if errList != nil {
log.Debugln("GetDeviceList Failed. Err:", errList)
log.Debugln("UpdateDevices LEAVE")
return errList
}
deviceInUse, errInUse := xplatform.GetInstance().Sys.GetInUseDeviceList()
if errInUse != nil {
log.Debugln("GetInUseDeviceList Failed. Err:", errInUse)
log.Debugln("UpdateDevices LEAVE")
return errInUse
}
atLeastOne := false
for _, device := range deviceList {
log.Debugln("Device:", device)
if isInList(deviceInUse, device) {
log.Debugln("Device is InUse")
continue
}
log.Debugln("Add Device:", device)
state.Devices = append(state.Devices, device)
atLeastOne = true
}
if !atLeastOne {
log.Debugln("Does not have any devices to offer!")
}
response, err := json.MarshalIndent(state, "", " ")
if err != nil {
log.Errorln("Failed to marshall state object:", err)
log.Debugln("UpdateDevices LEAVE")
return err
}
req, err := http.NewRequest("POST", url, bytes.NewBuffer(response))
if err != nil {
log.Errorln("Failed to create new HTTP request:", err)
log.Debugln("UpdateDevices LEAVE")
return err
}
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
log.Errorln("Failed to make HTTP call:", err)
log.Debugln("UpdateDevices LEAVE")
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(io.LimitReader(resp.Body, 1048576))
if err != nil {
log.Errorln("Failed to read the HTTP Body:", err)
log.Debugln("UpdateDevices LEAVE")
return err
}
log.Debugln("response Status:", resp.Status)
log.Debugln("response Headers:", resp.Header)
log.Debugln("response Body:", string(body))
var newstate types.UpdateDevices
err = json.Unmarshal(body, &newstate)
if err != nil {
log.Errorln("Failed to unmarshal the UpdateState object:", err)
log.Debugln("UpdateDevices LEAVE")
return err
}
log.Debugln("Acknowledged:", newstate.Acknowledged)
log.Debugln("ExecutorID:", newstate.ExecutorID)
if !newstate.Acknowledged {
log.Errorln("Failed to receive an acknowledgement")
log.Debugln("UpdateDevices LEAVE")
return ErrStateChangeNotAcknowledged
}
log.Debugln("UpdateDevices Succeeded")
log.Debugln("UpdateDevices LEAVE")
return nil
}
//UpdatePingNode this function tells the scheduler that "I am still here"
func (bsn *ScaleioNode) UpdatePingNode() error {
log.Debugln("UpdatePingNode ENTER")
url := bsn.State.SchedulerAddress + "/api/node/ping"
state := &types.PingNode{
Acknowledged: false,
ExecutorID: bsn.Config.ExecutorID,
}
response, err := json.MarshalIndent(state, "", " ")
if err != nil {
log.Errorln("Failed to marshall state object:", err)
log.Debugln("UpdatePingNode LEAVE")
return err
}
req, err := http.NewRequest("POST", url, bytes.NewBuffer(response))
if err != nil {
log.Errorln("Failed to create new HTTP request:", err)
log.Debugln("UpdatePingNode LEAVE")
return err
}
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
log.Errorln("Failed to make HTTP call:", err)
log.Debugln("UpdatePingNode LEAVE")
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(io.LimitReader(resp.Body, 1048576))
if err != nil {
log.Errorln("Failed to read the HTTP Body:", err)
log.Debugln("UpdatePingNode LEAVE")
return err
}
log.Debugln("response Status:", resp.Status)
log.Debugln("response Headers:", resp.Header)
log.Debugln("response Body:", string(body))
var newstate types.PingNode
err = json.Unmarshal(body, &newstate)
if err != nil {
log.Errorln("Failed to unmarshal the UpdateState object:", err)
log.Debugln("UpdatePingNode LEAVE")
return err
}
log.Debugln("Acknowledged:", newstate.Acknowledged)
log.Debugln("ExecutorID:", newstate.ExecutorID)
if !newstate.Acknowledged {
log.Errorln("Failed to receive an acknowledgement")
log.Debugln("UpdatePingNode LEAVE")
return ErrStateChangeNotAcknowledged
}
log.Debugln("UpdatePingNode Succeeded")
log.Debugln("UpdatePingNode LEAVE")
return nil
}
//RunStateUnknown default action for StateUnknown
func (bsn *ScaleioNode) RunStateUnknown() {
log.Debugln("In StateUnknown. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateCleanPrereqsReboot default action for StateCleanPrereqsReboot
func (bsn *ScaleioNode) RunStateCleanPrereqsReboot() {
log.Debugln("In StateCleanPrereqsReboot. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStatePrerequisitesInstalled default action for StatePrerequisitesInstalled
func (bsn *ScaleioNode) RunStatePrerequisitesInstalled() {
log.Debugln("In StatePrerequisitesInstalled. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateBasePackagedInstalled default action for StateBasePackagedInstalled
func (bsn *ScaleioNode) RunStateBasePackagedInstalled() {
log.Debugln("In StateBasePackagedInstalled. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateInitializeCluster default action for StateInitializeCluster
func (bsn *ScaleioNode) RunStateInitializeCluster() {
log.Debugln("In StateInitializeCluster. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateAddResourcesToScaleIO default action for StateAddResourcesToScaleIO
func (bsn *ScaleioNode) RunStateAddResourcesToScaleIO() {
log.Debugln("In StateAddResourcesToScaleIO. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateInstallRexRay default action for StateInstallRexRay
func (bsn *ScaleioNode) RunStateInstallRexRay() {
log.Debugln("In StateInstallRexRay. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateCleanInstallReboot default action for StateCleanInstallReboot
func (bsn *ScaleioNode) RunStateCleanInstallReboot() {
log.Debugln("In StateCleanInstallReboot. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateSystemReboot default action for StateSystemReboot
func (bsn *ScaleioNode) RunStateSystemReboot() {
log.Debugln("In StateSystemReboot. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateFinishInstall default action for StateFinishInstall
func (bsn *ScaleioNode) RunStateFinishInstall() {
log.Debugln("In StateFinishInstall. Wait for", PollForChangesInSeconds,
"seconds for changes in the cluster.")
time.Sleep(time.Duration(PollForChangesInSeconds) * time.Second)
}
//RunStateUpgradeCluster default action for StateUpgradeCluster
func (bsn *ScaleioNode) RunStateUpgradeCluster() {
log.Debugln("In StateUpgradeCluster. Do nothing.")
time.Sleep(time.Duration(PollStatusInSeconds) * time.Second)
}
//RunStateFatalInstall default action for StateFatalInstall
func (bsn *ScaleioNode) RunStateFatalInstall() {
log.Debugln("Node marked Fatal. Wait for", PollAfterFatalInSeconds, "seconds")
time.Sleep(time.Duration(PollAfterFatalInSeconds) * time.Second)
}