builds its own []command from json

Signed-off-by: Derek McQuay <derekmcquay@gmail.com>

main.go

@@ -8,39 +8,57 @@ import (
 	"os/exec"
 	"strings"
 	"sync"
+
+	"github.com/fatih/color"
 )
 
 type command struct {
-	node   string
+	node string
-	port   int
+	hc   string
-	url    string
-	health string
 }
 
-type dcosJSON struct {
+type healthCheck struct {
+	Name     string `json:"name"`
+	PodSpecs []struct {
+		Type      string `json:"type"`
+		TaskSpecs []struct {
+			HealthCheckSpec struct {
+				Command string `json:"command"`
+			} `json:"health-check-spec"`
+		} `json:"task-specs"`
+	} `json:"pod-specs"`
+}
+
+type serviceIPs struct {
 	Name     string `json:"name"`
 	Statuses []struct {
 		ContainerStatus struct {
-			ContainerID struct {
-				Value string `json:"value"`
-			} `json:"container_id"`
 			NetworkInfos []struct {
 				IPAddresses []struct {
 					IPAddress string `json:"ip_address"`
 				} `json:"ip_addresses"`
 			} `json:"network_infos"`
 		} `json:"container_status"`
-		State     string  `json:"state"`
-		Timestamp float64 `json:"timestamp"`
 	} `json:"statuses"`
 }
 
-type apiserverIPs struct {
+func getHealthCheck() healthCheck {
-	name string
+	cmd := exec.Command("dcos", "kubernetes", "config", "target")
-	ip   string
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	err := cmd.Run()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	h := healthCheck{}
+	if err := json.Unmarshal([]byte(out.String()), &h); err != nil {
+		panic(err)
+	}
+	return h
 }
 
-func getAPIServerIPs() []apiserverIPs {
+func getServiceIPs() []serviceIPs {
 	cmd := exec.Command("dcos", "task", "--json")
 	var out bytes.Buffer
 	cmd.Stdout = &out
@@ -49,64 +67,75 @@ func getAPIServerIPs() []apiserverIPs {
 		log.Fatal(err)
 	}
 
-	d := []dcosJSON{}
+	s := []serviceIPs{}
-	if err := json.Unmarshal([]byte(out.String()), &d); err != nil {
+	if err := json.Unmarshal([]byte(out.String()), &s); err != nil {
 		panic(err)
 	}
-	ips := []apiserverIPs{}
+
-	for _, i := range d {
+	// get rid of kubernetes pod
-		if strings.Contains(i.Name, "apiserver") {
+	for i, n := range s {
-			ips = append(
+		if n.Name == "kubernetes" {
-				ips,
+			s = append(s[:i], s[i+1:]...)
-				apiserverIPs{
-					name: i.Name,
-					ip:   i.Statuses[0].ContainerStatus.NetworkInfos[0].IPAddresses[0].IPAddress,
-				},
-			)
 		}
 	}
-	return ips
+	return s
 }
 
-func addAPIServer(n string, ips []apiserverIPs) string {
+func addAPIServer(n string, ips []serviceIPs) string {
 	for _, i := range ips {
-		if strings.Contains(i.name, n) {
+		if strings.Contains(i.Name, n) {
-			return i.ip
+			return i.Statuses[0].ContainerStatus.NetworkInfos[0].IPAddresses[0].IPAddress
 		}
 	}
 	return ""
 }
 
+func stripHealthCheck(n string, hcs healthCheck) string {
+	for _, j := range hcs.PodSpecs {
+		if strings.Contains(n, j.Type) {
+			if len(j.TaskSpecs) != 0 {
+				return j.TaskSpecs[0].HealthCheckSpec.Command
+			}
+			return ""
+		}
+	}
+	return ""
+}
+
+func buildCommands(hcs healthCheck, ips []serviceIPs) []command {
+	commands := []command{}
+	for _, s := range ips {
+		if strings.Contains(s.Name, "apiserver") || strings.Contains(s.Name, "etcd") {
+			ip := s.Statuses[0].ContainerStatus.NetworkInfos[0].IPAddresses[0].IPAddress
+			c := strings.Replace(stripHealthCheck(s.Name, hcs), "$LIBPROCESS_IP", ip, -1)
+			commands = append(commands, command{node: s.Name, hc: c})
+		} else {
+			commands = append(commands, command{node: s.Name, hc: stripHealthCheck(s.Name, hcs)})
+		}
+	}
+	fmt.Println(commands)
+	return commands
+}
+
 func main() {
 	var wg sync.WaitGroup
-	ips := getAPIServerIPs()
+	hcs := getHealthCheck()
-	hosts := []command{
+	ips := getServiceIPs()
-		command{node: "kube-controller-manager-0-node", port: 10252, url: "localhost", health: "healthz"},
+	hosts := buildCommands(hcs, ips)
-		command{node: "kube-controller-manager-1-node", port: 10252, url: "localhost", health: "healthz"},
-		command{node: "kube-controller-manager-2-node", port: 10252, url: "localhost", health: "healthz"},
-		command{node: "kube-scheduler-0-node", port: 10252, url: "localhost", health: "healthz"},
-		command{node: "kube-scheduler-1-node", port: 10251, url: "localhost", health: "healthz"},
-		command{node: "kube-scheduler-2-node", port: 10251, url: "localhost", health: "healthz"},
-		command{node: "kube-apiserver-0-node", port: 9000, url: addAPIServer("0", ips), health: "healthz"},
-		command{node: "kube-apiserver-1-node", port: 9000, url: addAPIServer("1", ips), health: "healthz"},
-		command{node: "kube-apiserver-2-node", port: 9000, url: addAPIServer("2", ips), health: "healthz"},
-		command{node: "etcd-0-node", port: 2379, url: "localhost", health: "health"},
-		command{node: "etcd-1-node", port: 2379, url: "localhost", health: "health"},
-		command{node: "etcd-2-node", port: 2379, url: "localhost", health: "health"},
-	}
 
 	for _, n := range hosts {
 		wg.Add(1)
 		go func(c command) {
 			defer wg.Done()
+			s := strings.Split(c.hc, " ")
 			cmd := exec.Command(
 				"dcos",
 				"task",
 				"exec",
 				c.node,
-				"/usr/bin/curl",
+				s[0],
-				"-sSf",
+				s[1],
-				fmt.Sprintf("%s:%d/%s", c.url, c.port, c.health),
+				s[2],
 			)
 			var out bytes.Buffer
 			cmd.Stdout = &out
@@ -114,7 +143,11 @@ func main() {
 			if err != nil {
 				log.Fatal(err)
 			}
-			fmt.Printf("%v: %q\n", c, out.String())
+			if strings.Contains(out.String(), "ok") || strings.Contains(out.String(), "true") {
+				color.Green(fmt.Sprintf("%v: %q\n", c, out.String()))
+			} else {
+				color.Red(fmt.Sprintf("%v: %q\n", c, out.String()))
+			}
 		}(n)
 	}
 	wg.Wait()