func (h *CfgGetHandler) ServeHTTP(
w http.ResponseWriter, req *http.Request) {
// TODO: Might need to scrub auth passwords from this output.
cfg := h.mgr.Cfg()
indexDefs, indexDefsCAS, indexDefsErr :=
cbgt.CfgGetIndexDefs(cfg)
nodeDefsWanted, nodeDefsWantedCAS, nodeDefsWantedErr :=
cbgt.CfgGetNodeDefs(cfg, cbgt.NODE_DEFS_WANTED)
nodeDefsKnown, nodeDefsKnownCAS, nodeDefsKnownErr :=
cbgt.CfgGetNodeDefs(cfg, cbgt.NODE_DEFS_KNOWN)
planPIndexes, planPIndexesCAS, planPIndexesErr :=
cbgt.CfgGetPlanPIndexes(cfg)
MustEncode(w, RESTCfg{
Status: "ok",
IndexDefs: indexDefs,
IndexDefsCAS: indexDefsCAS,
IndexDefsErr: indexDefsErr,
NodeDefsWanted: nodeDefsWanted,
NodeDefsWantedCAS: nodeDefsWantedCAS,
NodeDefsWantedErr: nodeDefsWantedErr,
NodeDefsKnown: nodeDefsKnown,
NodeDefsKnownCAS: nodeDefsKnownCAS,
NodeDefsKnownErr: nodeDefsKnownErr,
PlanPIndexes: planPIndexes,
PlanPIndexesCAS: planPIndexesCAS,
PlanPIndexesErr: planPIndexesErr,
})
}
// WaitForWantedNodes blocks until the nodeDefsWanted in the cfg is
// equal to or a superset of the provided wantedNodes, and returns the
// "nodes to remove" (actualWantedNodes SET-DIFFERENCE wantedNodes).
func WaitForWantedNodes(cfg cbgt.Cfg, wantedNodes []string,
cancelCh <-chan struct{}, secs int) (
[]string, error) {
var nodeDefWantedUUIDs []string
for i := 0; i < secs; i++ {
select {
case <-cancelCh:
return nil, ErrCtlCanceled
default:
}
nodeDefsWanted, _, err :=
cbgt.CfgGetNodeDefs(cfg, cbgt.NODE_DEFS_WANTED)
if err != nil {
return nil, err
}
nodeDefWantedUUIDs = nil
for _, nodeDef := range nodeDefsWanted.NodeDefs {
nodeDefWantedUUIDs = append(nodeDefWantedUUIDs, nodeDef.UUID)
}
if len(cbgt.StringsRemoveStrings(wantedNodes, nodeDefWantedUUIDs)) <= 0 {
return cbgt.StringsRemoveStrings(nodeDefWantedUUIDs, wantedNodes), nil
}
time.Sleep(1 * time.Second)
}
return nil, fmt.Errorf("ctl: WaitForWantedNodes"+
" could not attain wantedNodes: %#v,"+
" only reached nodeDefWantedUUIDs: %#v",
wantedNodes, nodeDefWantedUUIDs)
}
func CurrentMemberNodes(cfg cbgt.Cfg) ([]CtlNode, error) {
nodeDefsWanted, _, err := cbgt.CfgGetNodeDefs(cfg, cbgt.NODE_DEFS_WANTED)
if err != nil {
return nil, err
}
var memberNodes []CtlNode
for _, nodeDef := range nodeDefsWanted.NodeDefs {
memberNode := CtlNode{
UUID: nodeDef.UUID,
ServiceURL: "http://" + nodeDef.HostPort,
}
if nodeDef.Extras != "" {
// Early versions of ns_server integration had a simple,
// non-JSON "host:port" format for nodeDef.Extras, which
// we use as default.
nsHostPort := nodeDef.Extras
var e struct {
NsHostPort string `json:"nsHostPort"`
}
err := json.Unmarshal([]byte(nodeDef.Extras), &e)
if err != nil {
nsHostPort = e.NsHostPort
}
memberNode.ManagerURL = "http://" + nsHostPort
}
memberNodes = append(memberNodes, memberNode)
}
return memberNodes, nil
}
// PlannerSteps helps command-line tools implement the planner steps:
// * "unregister" - unregisters nodesRemove from the cfg.
// * "planner" - runs the planner to save a new plan into the cfg.
// * "failover" - a composite step, comprised of "unregister" and "failover_".
// * "failover_" - processes the nodesRemove as nodes to be failover'ed.
//
// The "NODES-REMOVE-ALL" step overrides the nodesRemove with every
// known and wanted node. This can have a lot of impact, and was
// meant to be used for cluster cleanup/purging situations.
func PlannerSteps(steps map[string]bool,
cfg cbgt.Cfg, version, server string, options map[string]string,
nodesRemove []string, dryRun bool, plannerFilter cbgt.PlannerFilter) error {
if steps != nil && steps["failover"] {
steps["unregister"] = true
steps["failover_"] = true
}
if steps != nil && steps["NODES-REMOVE-ALL"] {
nodesRemove = nil
nodesSeen := map[string]bool{}
for _, kind := range []string{
cbgt.NODE_DEFS_WANTED,
cbgt.NODE_DEFS_KNOWN,
} {
nodeDefs, _, err := cbgt.CfgGetNodeDefs(cfg, kind)
if err != nil {
return err
}
for _, nodeDef := range nodeDefs.NodeDefs {
if !nodesSeen[nodeDef.UUID] {
nodesSeen[nodeDef.UUID] = true
nodesRemove = append(nodesRemove, nodeDef.UUID)
}
}
}
}
log.Printf("planner: nodesRemove: %#v", nodesRemove)
if steps != nil && steps["unregister"] {
log.Printf("planner: step unregister")
if !dryRun {
err := cbgt.UnregisterNodes(cfg, cbgt.VERSION, nodesRemove)
if err != nil {
return err
}
}
}
if steps != nil && steps["planner"] {
log.Printf("planner: step planner")
if !dryRun {
_, err :=
cbgt.Plan(cfg, cbgt.VERSION, "", server, options, plannerFilter)
if err != nil {
return err
}
}
}
if steps != nil && steps["failover_"] {
log.Printf("planner: step failover_")
if !dryRun {
_, err := Failover(cfg, cbgt.VERSION, server, options, nodesRemove)
if err != nil {
return err
}
}
}
return nil
}
func (h *NsStatusHandler) ServeHTTP(
w http.ResponseWriter, req *http.Request) {
cfg := h.mgr.Cfg()
planPIndexes, _, err := cbgt.CfgGetPlanPIndexes(cfg)
if err != nil {
rest.ShowError(w, req, "could not retrieve plan pIndexes", 500)
return
}
nodesDefs, _, err := cbgt.CfgGetNodeDefs(cfg, cbgt.NODE_DEFS_WANTED)
if err != nil {
rest.ShowError(w, req, "could not retrieve node defs (wanted)", 500)
return
}
_, indexDefsMap, err := h.mgr.GetIndexDefs(false)
if err != nil {
rest.ShowError(w, req, "could not retrieve index defs", 500)
return
}
w.Write(cbgt.JsonOpenBrace)
w.Write(statsNamePrefix)
w.Write([]byte("status"))
w.Write(statsNameSuffix)
w.Write([]byte("["))
indexDefNames := make(sort.StringSlice, 0, len(indexDefsMap))
for indexDefName := range indexDefsMap {
indexDefNames = append(indexDefNames, indexDefName)
}
sort.Sort(indexDefNames)
for i, indexDefName := range indexDefNames {
indexDef := indexDefsMap[indexDefName]
if i > 0 {
w.Write(cbgt.JsonComma)
}
rest.MustEncode(w, struct {
Completion int `json:"completion"`
Hosts []string `json:"hosts"`
Status string `json:"status"`
Bucket string `json:"bucket"`
Name string `json:"name"`
}{
Bucket: indexDef.SourceName,
Name: indexDefName,
Hosts: HostsForIndex(indexDefName, planPIndexes, nodesDefs),
// FIXME hard-coded
Completion: 100,
Status: "Ready",
})
}
w.Write([]byte("],"))
w.Write(statsNamePrefix)
w.Write([]byte("code"))
w.Write(statsNameSuffix)
w.Write([]byte("\"success\""))
w.Write(cbgt.JsonCloseBrace)
}
func RunRecentInfoCache(mgr *cbgt.Manager) {
cfg := mgr.Cfg()
cfgChangedCh := make(chan struct{}, 10)
go func() { // Debounce cfg events to feed into the cfgChangedCh.
ech := make(chan cbgt.CfgEvent)
cfg.Subscribe(cbgt.PLAN_PINDEXES_KEY, ech)
for {
<-ech // First, wait for a cfg event.
debounceTimeCh := time.After(500 * time.Millisecond)
DEBOUNCE_LOOP:
for {
select {
case <-ech:
// NO-OP when there are more, spammy cfg events.
case <-debounceTimeCh:
break DEBOUNCE_LOOP
}
}
cfgChangedCh <- struct{}{}
}
}()
tickCh := time.Tick(1 * time.Minute)
for {
var nodeDefs *cbgt.NodeDefs
var planPIndexes *cbgt.PlanPIndexes
indexDefs, indexDefsMap, err := mgr.GetIndexDefs(false)
if err == nil {
nodeDefs, _, err = cbgt.CfgGetNodeDefs(cfg, cbgt.NODE_DEFS_WANTED)
if err == nil {
planPIndexes, _, err = cbgt.CfgGetPlanPIndexes(cfg)
}
}
rd := &recentInfo{
indexDefs: indexDefs,
indexDefsMap: indexDefsMap,
nodeDefs: nodeDefs,
planPIndexes: planPIndexes,
err: err,
}
runtime.ReadMemStats(&rd.memStats)
REUSE_CACHE:
for {
select {
case <-cfgChangedCh:
break REUSE_CACHE
case <-tickCh:
break REUSE_CACHE
case recentInfoCh <- rd:
if rd.err != nil {
break REUSE_CACHE
}
}
}
}
}
