"encoding/json"
"fmt"
"strings"
+ "sync"
"time"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
)
type CompositeAppContext struct {
- cid interface{}
+ cid interface{}
+ chans []chan bool
+ mutex sync.Mutex
}
func getRes(ac appcontext.AppContext, name string, app string, cluster string) ([]byte, interface{}, error) {
return nil
}
+func updateResourceStatus(ac appcontext.AppContext, resState resourcestatus.ResourceStatus, app string, cluster string, aov map[string][]string) error {
+
+ for _, res := range aov["resorder"] {
+
+ rh, err := ac.GetResourceHandle(app, cluster, res)
+ if err != nil {
+ return err
+ }
+ sh, err := ac.GetLevelHandle(rh, "status")
+ if err != nil {
+ return err
+ }
+
+ s, err := ac.GetValue(sh)
+ if err != nil {
+ return err
+ }
+ rStatus := resourcestatus.ResourceStatus{}
+ js, err := json.Marshal(s)
+ if err != nil {
+ return err
+ }
+ err = json.Unmarshal(js, &rStatus)
+ if err != nil {
+ return err
+ }
+ // no need to update a status that has reached a 'done' status
+ if rStatus.Status == resourcestatus.RsyncStatusEnum.Deleted ||
+ rStatus.Status == resourcestatus.RsyncStatusEnum.Applied ||
+ rStatus.Status == resourcestatus.RsyncStatusEnum.Failed {
+ continue
+ }
+
+ err = ac.UpdateStatusValue(sh, resState)
+ if err != nil {
+ return err
+ }
+ }
+
+ return nil
+
+}
+
+// return true if all resources have reached a 'done' status - e.g. Applied, Deleted or Failed
+func allResourcesDone(ac appcontext.AppContext, app string, cluster string, aov map[string][]string) bool {
+
+ for _, res := range aov["resorder"] {
+
+ rh, err := ac.GetResourceHandle(app, cluster, res)
+ if err != nil {
+ return false
+ }
+ sh, err := ac.GetLevelHandle(rh, "status")
+ if err != nil {
+ return false
+ }
+
+ s, err := ac.GetValue(sh)
+ if err != nil {
+ return false
+ }
+ rStatus := resourcestatus.ResourceStatus{}
+ js, err := json.Marshal(s)
+ if err != nil {
+ return false
+ }
+ err = json.Unmarshal(js, &rStatus)
+ if err != nil {
+ return false
+ }
+ if rStatus.Status != resourcestatus.RsyncStatusEnum.Deleted &&
+ rStatus.Status != resourcestatus.RsyncStatusEnum.Applied &&
+ rStatus.Status != resourcestatus.RsyncStatusEnum.Failed {
+ return false
+ }
+ }
+
+ return true
+
+}
+
// Wait for 2 secs
const waitTime = 2
-func waitForClusterReady(c *kubeclient.Client, cluster string) error {
+func waitForClusterReady(instca *CompositeAppContext, ac appcontext.AppContext, c *kubeclient.Client, appname string, cluster string, aov map[string][]string) error {
+
+ forceDone := false
+ resStateUpdated := false
+ ch := addChan(instca)
+
+ rch := make(chan error, 1)
+ checkReachable := func() {
+ err := c.IsReachable()
+ rch <- err
+ }
+
+ go checkReachable()
+Loop:
for {
- if err := c.IsReachable(); err != nil {
- // TODO: Add more realistic error checking
- // TODO: Add Incremental wait logic here
- time.Sleep(waitTime * time.Second)
- } else {
+ select {
+ case rerr := <-rch:
+ if rerr == nil {
+ break Loop
+ } else {
+ logutils.Info("Cluster is not reachable - keep trying::", logutils.Fields{"cluster": cluster})
+ go checkReachable()
+ }
+ case <-ch:
+ statusFailed := resourcestatus.ResourceStatus{
+ Status: resourcestatus.RsyncStatusEnum.Failed,
+ }
+ err := updateResourceStatus(ac, statusFailed, appname, cluster, aov)
+ if err != nil {
+ deleteChan(instca, ch)
+ return err
+ }
+ forceDone = true
+ break Loop
+ case <-time.After(waitTime * time.Second):
+ // on first timeout - cluster is apparently not reachable, update resources in
+ // this group to 'Retrying'
+ if !resStateUpdated {
+ statusRetrying := resourcestatus.ResourceStatus{
+ Status: resourcestatus.RsyncStatusEnum.Retrying,
+ }
+ err := updateResourceStatus(ac, statusRetrying, appname, cluster, aov)
+ if err != nil {
+ deleteChan(instca, ch)
+ return err
+ }
+ resStateUpdated = true
+ }
break
}
}
- logutils.Info("Cluster is reachable::", logutils.Fields{
- "cluster": cluster,
- })
+
+ deleteChan(instca, ch)
+ if forceDone {
+ return pkgerrors.Errorf("Termination of rsync cluster retry: " + cluster)
+ }
return nil
}
-// initializeResourceStatus sets the initial status of every resource appropriately based on the state of the AppContext
+// initializeAppContextStatus sets the initial status of every resource appropriately based on the state of the AppContext
func initializeAppContextStatus(ac appcontext.AppContext, acStatus appcontext.AppContextStatus) error {
h, err := ac.GetCompositeAppHandle()
if err != nil {
js, _ := json.Marshal(s)
json.Unmarshal(js, &acStatus)
- if failure {
- acStatus.Status = appcontext.AppContextStatusEnum.Failed
- } else if acStatus.Status == appcontext.AppContextStatusEnum.Instantiating {
- acStatus.Status = appcontext.AppContextStatusEnum.Instantiated
+ if acStatus.Status == appcontext.AppContextStatusEnum.Instantiating {
+ if failure {
+ acStatus.Status = appcontext.AppContextStatusEnum.InstantiateFailed
+ } else {
+ acStatus.Status = appcontext.AppContextStatusEnum.Instantiated
+ }
} else if acStatus.Status == appcontext.AppContextStatusEnum.Terminating {
- acStatus.Status = appcontext.AppContextStatusEnum.Terminated
+ if failure {
+ acStatus.Status = appcontext.AppContextStatusEnum.TerminateFailed
+ } else {
+ acStatus.Status = appcontext.AppContextStatusEnum.Terminated
+ }
} else {
return pkgerrors.Errorf("Invalid AppContextStatus %v", acStatus)
}
return nil
}
+func getAppContextStatus(ac appcontext.AppContext) (*appcontext.AppContextStatus, error) {
+
+ h, err := ac.GetCompositeAppHandle()
+ if err != nil {
+ return nil, err
+ }
+ sh, err := ac.GetLevelHandle(h, "status")
+ if err != nil {
+ return nil, err
+ }
+ s, err := ac.GetValue(sh)
+ if err != nil {
+ return nil, err
+ }
+ acStatus := appcontext.AppContextStatus{}
+ js, _ := json.Marshal(s)
+ json.Unmarshal(js, &acStatus)
+
+ return &acStatus, nil
+
+}
+
type fn func(ac appcontext.AppContext, client *kubeclient.Client, res string, app string, cluster string, label string) error
type statusfn func(client *kubeclient.Client, app string, cluster string, label string) error
-func applyFnComApp(cid interface{}, acStatus appcontext.AppContextStatus, f fn, sfn statusfn, breakonError bool) error {
- con := connector.Init(cid)
+func addChan(instca *CompositeAppContext) chan bool {
+
+ instca.mutex.Lock()
+ c := make(chan bool)
+ instca.chans = append(instca.chans, c)
+ instca.mutex.Unlock()
+
+ return c
+}
+
+func deleteChan(instca *CompositeAppContext, c chan bool) error {
+
+ var i int
+ instca.mutex.Lock()
+ for i = 0; i < len(instca.chans); i++ {
+ if instca.chans[i] == c {
+ break
+ }
+ }
+
+ if i == len(instca.chans) {
+ instca.mutex.Unlock()
+ return pkgerrors.Errorf("Given channel was not found:")
+ }
+ instca.chans[i] = instca.chans[len(instca.chans)-1]
+ instca.chans = instca.chans[:len(instca.chans)-1]
+ instca.mutex.Unlock()
+
+ return nil
+}
+
+func waitForDone(ac appcontext.AppContext) {
+ count := 0
+ for {
+ time.Sleep(1 * time.Second)
+ count++
+ if count == 60*60 {
+ logutils.Info("Wait for done watcher running..", logutils.Fields{})
+ count = 0
+ }
+ acStatus, _ := getAppContextStatus(ac)
+ if acStatus.Status == appcontext.AppContextStatusEnum.Instantiated ||
+ acStatus.Status == appcontext.AppContextStatusEnum.InstantiateFailed {
+ return
+ }
+ }
+ return
+}
+
+func kickoffRetryWatcher(instca *CompositeAppContext, ac appcontext.AppContext, acStatus appcontext.AppContextStatus, wg *errgroup.Group) {
+
+ wg.Go(func() error {
+
+ var count int
+
+ count = 0
+ for {
+ time.Sleep(1 * time.Second)
+ count++
+ if count == 60*60 {
+ logutils.Info("Retry watcher running..", logutils.Fields{})
+ count = 0
+ }
+
+ cStatus, err := getAppContextStatus(ac)
+ if err != nil {
+ logutils.Error("Failed to get the app context status", logutils.Fields{
+ "error": err,
+ })
+ return err
+ }
+ flag, err := getAppContextFlag(ac)
+ if err != nil {
+ logutils.Error("Failed to get the stop flag", logutils.Fields{
+ "error": err,
+ })
+ return err
+ } else {
+ if flag == true {
+ instca.mutex.Lock()
+ for i := 0; i < len(instca.chans); i++ {
+ instca.chans[i] <- true
+ logutils.Info("kickoffRetryWatcher - send an exit message", logutils.Fields{})
+ }
+ instca.mutex.Unlock()
+ break
+ }
+ }
+ if acStatus.Status == appcontext.AppContextStatusEnum.Instantiating {
+ if cStatus.Status == appcontext.AppContextStatusEnum.Instantiated ||
+ cStatus.Status == appcontext.AppContextStatusEnum.InstantiateFailed {
+ break
+ }
+ } else {
+ if cStatus.Status == appcontext.AppContextStatusEnum.Terminated ||
+ cStatus.Status == appcontext.AppContextStatusEnum.TerminateFailed {
+ break
+ }
+ }
+
+ }
+ return nil
+ })
+
+}
+
+func getAppContextFlag(ac appcontext.AppContext) (bool, error) {
+ h, err := ac.GetCompositeAppHandle()
+ if err != nil {
+ return false, err
+ }
+ sh, err := ac.GetLevelHandle(h, "stopflag")
+ if sh == nil {
+ return false, err
+ } else {
+ v, err := ac.GetValue(sh)
+ if err != nil {
+ return false, err
+ } else {
+ return v.(bool), nil
+ }
+ }
+}
+
+func updateAppContextFlag(cid interface{}, sf bool) error {
+ ac := appcontext.AppContext{}
+ _, err := ac.LoadAppContext(cid)
+ if err != nil {
+ return err
+ }
+ hc, err := ac.GetCompositeAppHandle()
+ if err != nil {
+ return err
+ }
+ sh, err := ac.GetLevelHandle(hc, "stopflag")
+ if sh == nil {
+ _, err = ac.AddLevelValue(hc, "stopflag", sf)
+ } else {
+ err = ac.UpdateValue(sh, sf)
+ }
+ if err != nil {
+ return err
+ }
+ return nil
+}
+
+func applyFnComApp(instca *CompositeAppContext, acStatus appcontext.AppContextStatus, f fn, sfn statusfn, breakonError bool) error {
+ con := connector.Init(instca.cid)
//Cleanup
defer con.RemoveClient()
ac := appcontext.AppContext{}
- h, err := ac.LoadAppContext(cid)
+ h, err := ac.LoadAppContext(instca.cid)
if err != nil {
return err
}
+ // if terminating, wait for all retrying instantiate threads to exit
+ if acStatus.Status == appcontext.AppContextStatusEnum.Terminating {
+ waitForDone(ac)
+ err := updateAppContextFlag(instca.cid, false)
+ if err != nil {
+ return err
+ }
+ }
+
// initialize appcontext status
err = initializeAppContextStatus(ac, acStatus)
if err != nil {
})
id, _ := ac.GetCompositeAppHandle()
g, _ := errgroup.WithContext(context.Background())
+ wg, _ := errgroup.WithContext(context.Background())
+ kickoffRetryWatcher(instca, ac, acStatus, wg)
// Iterate over all the subapps
for _, app := range appList["apporder"] {
appName := app
json.Unmarshal([]byte(resorder.(string)), &aov)
// Keep retrying for reachability
for {
+ done := allResourcesDone(ac, appName, cluster, aov)
+ if done {
+ break
+ }
+
// Wait for cluster to be reachable
- err = waitForClusterReady(c, cluster)
+ err := waitForClusterReady(instca, ac, c, appName, cluster, aov)
if err != nil {
// TODO: Add error handling
return err
logutils.Error("Encountered error updating AppContext status", logutils.Fields{"error": err})
return err
}
+ if err := wg.Wait(); err != nil {
+ logutils.Error("Encountered error in watcher thread", logutils.Fields{"error": err})
+ return err
+ }
return nil
}
// InstantiateComApp Instantiate Apps in Composite App
func (instca *CompositeAppContext) InstantiateComApp(cid interface{}) error {
- go applyFnComApp(cid, appcontext.AppContextStatus{Status: appcontext.AppContextStatusEnum.Instantiating},
+ instca.cid = cid
+ instca.chans = []chan bool{}
+ instca.mutex = sync.Mutex{}
+ err := updateAppContextFlag(cid, false)
+ if err != nil {
+ logutils.Error("Encountered error updating AppContext flag", logutils.Fields{"error": err})
+ return err
+ }
+ go applyFnComApp(instca, appcontext.AppContextStatus{Status: appcontext.AppContextStatusEnum.Instantiating},
instantiateResource, addStatusTracker, true)
return nil
}
// TerminateComApp Terminates Apps in Composite App
func (instca *CompositeAppContext) TerminateComApp(cid interface{}) error {
- go applyFnComApp(cid, appcontext.AppContextStatus{Status: appcontext.AppContextStatusEnum.Terminating},
+ instca.cid = cid
+ instca.chans = []chan bool{}
+ instca.mutex = sync.Mutex{}
+ err := updateAppContextFlag(cid, true)
+ if err != nil {
+ logutils.Error("Encountered error updating AppContext flag", logutils.Fields{"error": err})
+ return err
+ }
+ go applyFnComApp(instca, appcontext.AppContextStatus{Status: appcontext.AppContextStatusEnum.Terminating},
terminateResource, deleteStatusTracker, false)
return nil
}
Code Review / multicloud / k8s.git / commitdiff