make some progress, switch to golang

Dockerfile

@@ -1,6 +1,15 @@
-from alpine
-RUN apk update && apk add --no-cache docker-cli
-COPY ./get_stats.sh /get_stats.sh
+# from alpine
+# RUN apk update && apk add --no-cache docker-cli
+# COPY ./get_stats.sh /get_stats.sh
 
-CMD [ "/bin/sh", "/get_stats.sh" ] 
-# ENTRYPOINT ["tail", "-f", "/dev/null"]
+# CMD [ "/bin/sh", "/get_stats.sh" ] 
+# # ENTRYPOINT ["tail", "-f", "/dev/null"]
+
+#### old sad sh version above here
+from golang:alpine3.14
+
+WORKDIR /go/src/app
+COPY ./sandman.go .
+RUN go build sandman.go 
+
+CMD ["./sandman"]

docker-compose.yaml

@@ -5,11 +5,15 @@ services:
     build: .
     # image: sandman
     environment:
-    - PORT=81
+      - PORT=81
+      - LABEL=sandman
     ports:
-    - 81:81
+      - 81:81
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+
     # command: tail -F asdf
-    command: /bin/sh /get_stats.sh
+    # command: /bin/sh /get_stats.sh
 
   whoami2:
     container_name: whoami2
@@ -17,6 +21,8 @@ services:
     command: --port 81
     network_mode: service:whoami
     depends_on: 
-    - whoami
+      - whoami
     # ports:
-    # - 80:80
+    # - 80:80
+    labels:
+      - "com.sandman.marker=sandman"

sandman.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"time"
+)
+
+func main() {
+	label := os.Getenv("LABEL")
+	// port := os.Getenv("PORT")
+	inactive_seconds := 0
+	host := true // true will represent on and false will represent off
+
+	for {
+		// if the host is turned on
+		if host {
+			out, err := exec.Command("/bin/sh", "-c", "netstat -n | grep ESTABLISHED | awk '{ print $4 }' | rev | cut -d: -f1| rev | grep -w \"$PORT\" | wc -l").Output()
+			if err != nil {
+				fmt.Println(err.Error())
+				return
+			}
+			fmt.Println("active clients: ", string(out))
+			active_clients, _ := strconv.Atoi(string(out))
+			if active_clients == 0 {
+				inactive_seconds++
+			}
+			println(inactive_seconds, "seconds without an active client")
+			if inactive_seconds > 10 {
+				stop_containers(label)
+				host = false
+			}
+		}
+
+		if !host {
+			println("time to check net stats for attempted connections")
+			// do more checking here
+			// check around in here to make sure the host doesn't magically restart and we have to deal with those again
+			// really we should probably be checking that all the time anyways
+			// out, err := exec.Command("/bin/sh", "-c", "netstat -n | grep ESTABLISHED | awk '{ print $4 }' | rev | cut -d: -f1| rev | grep -w \"$PORT\" | wc -l").Output()
+
+		}
+
+		time.Sleep(time.Second)
+	}
+
+	fmt.Println("hello world")
+	// cmd := exec.Command(app, arg0, arg1, arg2, arg3)
+	// stdout, err := cmd.Output()
+
+	// if err != nil {
+	// 	fmt.Println(err.Error())
+	// 	return
+	// }
+
+	// Print the output
+	// fmt.Println(string(stdout))
+}
+
+func stop_containers(label string) {
+	println("stopping contianer")
+
+}
+
+func start_containers(label string) {
+	// docker ps -a --no-trunc --filter label="com.sandman.marker=sandman"
+}