From 56b562f6cc29a53cca2b1a72dc98270ffcee827e Mon Sep 17 00:00:00 2001
From: Derek McQuay <derekmcquay@gmail.com>
Date: Fri, 12 May 2017 13:22:42 -0700
Subject: [PATCH] initial commit

Signed-off-by: Derek McQuay <derekmcquay@gmail.com>
---
 main.go | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 main.go

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..a429ec5
--- /dev/null
+++ b/main.go
@@ -0,0 +1,121 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"log"
+	"os/exec"
+	"strings"
+	"sync"
+)
+
+type command struct {
+	node   string
+	port   int
+	url    string
+	health string
+}
+
+type dcosJSON 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 {
+	name string
+	ip   string
+}
+
+func getAPIServerIPs() []apiserverIPs {
+	cmd := exec.Command("dcos", "task", "--json")
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	err := cmd.Run()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	d := []dcosJSON{}
+	if err := json.Unmarshal([]byte(out.String()), &d); err != nil {
+		panic(err)
+	}
+	ips := []apiserverIPs{}
+	for _, i := range d {
+		if strings.Contains(i.Name, "apiserver") {
+			ips = append(
+				ips,
+				apiserverIPs{
+					name: i.Name,
+					ip:   i.Statuses[0].ContainerStatus.NetworkInfos[0].IPAddresses[0].IPAddress,
+				},
+			)
+		}
+	}
+	return ips
+}
+
+func addAPIServer(n string, ips []apiserverIPs) string {
+	for _, i := range ips {
+		if strings.Contains(i.name, n) {
+			return i.ip
+		}
+	}
+	return ""
+}
+
+func main() {
+	var wg sync.WaitGroup
+	ips := getAPIServerIPs()
+	hosts := []command{
+		command{node: "kube-controller-manager-0-node", port: 10252, url: "localhost", health: "healthz"},
+		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()
+			cmd := exec.Command(
+				"dcos",
+				"task",
+				"exec",
+				c.node,
+				"/usr/bin/curl",
+				"-sSf",
+				fmt.Sprintf("%s:%d/%s", c.url, c.port, c.health),
+			)
+			var out bytes.Buffer
+			cmd.Stdout = &out
+			err := cmd.Run()
+			if err != nil {
+				log.Fatal(err)
+			}
+			fmt.Printf("%v: %q\n", c, out.String())
+		}(n)
+	}
+	wg.Wait()
+}