trigger start over http

Signed-off-by: Jeff Carr <jcarr@wit.com>

Makefile

@@ -10,7 +10,8 @@ all:
 	./virtigo --hosts farm01 farm02 farm03
 
 start:
-	./virtigo --start jcarr
+	curl --silent http://localhost:8080/start?start=jcarr
+	@# ./virtigo --start jcarr
 
 curl-uptime:
 	curl --silent http://localhost:8080/uptime

event.go

@@ -22,3 +22,9 @@ func (h *HyperT) RestartDaemon() {
 	log.Info("KILLED DAEMON", h.Hostname, shell.FormatDuration(dur), "curl", url)
 	me.killcount += 1
 }
+
+func (h *HyperT) Start(d *DropletT) {
+	url := "http://" + h.Hostname + ":2520/start?" + d.Hostname
+	s := shell.Wget(url)
+	log.Info("EVENT start droplet", url, s)
+}

http.go

@@ -32,7 +32,6 @@ func okHandler(w http.ResponseWriter, r *http.Request) {
 
 	// is the cluster running what it should?
 	if tmp == "/droplets" {
-		var good = true
 		for _, d := range me.droplets {
 			if d.State != "ON" {
 				continue
@@ -40,17 +39,11 @@ func okHandler(w http.ResponseWriter, r *http.Request) {
 			dur := time.Since(d.lastpoll) // Calculate the elapsed time
 			if d.CurrentState != "ON" {
 				fmt.Fprintln(w, "BAD  STATE   ", d.Hostname, "State =", d.State, "CurrentState =", d.CurrentState, shell.FormatDuration(dur))
-				good = false
 			} else {
 				dur := time.Since(d.lastpoll) // Calculate the elapsed time
 				fmt.Fprintln(w, "GOOD STATE ON", d.Hostname, d.hname, shell.FormatDuration(dur))
 			}
 		}
-		if good {
-			fmt.Fprintln(w, "Handling URL:", tmp, "GOOD=true")
-		} else {
-			fmt.Fprintln(w, "Handling URL:", tmp, "GOOD=false")
-		}
 		return
 	}
 
@@ -90,6 +83,13 @@ func okHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if tmp == "/start" {
+		start := r.URL.Query().Get("start")
+		log.Info("should start droplet here", start)
+		fmt.Fprintln(w, "should start droplet here", start)
+		return
+	}
+
 	log.Warn("BAD URL =", tmp)
 	fmt.Fprintln(w, "BAD ZOOT")
 	// badurl(w, r.URL.String())

poll.go

@@ -136,8 +136,17 @@ func clusterHealthy() (bool, string) {
 	}
 	summary = strings.TrimSpace(summary)
 	summary += ")"
-	summary += "(killcount=" + fmt.Sprintf("%d", me.killcount) + ")"
+	if me.killcount > 0 {
+		summary += "(killcount=" + fmt.Sprintf("%d", me.killcount) + ")"
+	}
+	last := time.Since(me.stable)
+	if last > 133*time.Second {
+		// the cluster has not been stable for 10 seconds
+		s := shell.FormatDuration(last)
+		summary += "(unstable " + s + ")"
+	}
 	if good {
+		me.stable = time.Now()
 		return good, "GOOD=true " + summary
 	}
 	return good, "GOOD=false " + summary

structs.go

@@ -20,6 +20,7 @@ type virtigoT struct {
 	hypers    []*HyperT
 	droplets  []*DropletT
 	killcount int
+	stable    time.Time // the latest time the cluster has been okay
 }
 
 // the stuff that is needed for a hypervisor