added in systemd unit and scripts

added in APP_INSTANCE for custom start includine debug
first basic working version that has been deployed

config/default.yaml

@@ -1,11 +1,3 @@
-notify:
-  services:
-    pushsafer:
-      module: "@uci-utils/notify-pushsafer-plugin"
-    email:
-      module: "@uci-utils/notify-email-plugin"
-      subject: 'A Public IP Address has changed'
-cron: 10  # interval in minutes to check to see if public ip has changed, comment to run just once or set to falsey
 lookup:
   interval: 10 # seconds to keep trying lookup of changed value
   timeout: 2 # minutes before giving up - failed set

config/dev-debug.yaml

@@ -0,0 +1,2 @@
+debug: true
+verbose: vv

config/dev.yaml

@@ -1,5 +1,5 @@
 network: 'testing kebler network'
 domain: 'test.kebler.net'
 dev: true
-announce: true
+verbose: v
 cron: 1

config/production.yaml

@@ -0,0 +1,6 @@
+announce: false
+pro: true
+cron: 30  # interval in minutes to check to see if public ip has changed, comment to run just once or set to falsey
+lookup:
+  interval: 10 # seconds to keep trying lookup of changed value
+  timeout: 2 # minutes before giving up - failed set

index.js

@@ -7,15 +7,18 @@ import { promisify } from 'util'
 const lookup = promisify(clookup)
 import { CronJob } from 'cron'
 
-console.log(JSON.stringify(opts, null, 3))
 const rname = process.argv[2] || opts.domain
 if (!rname) {
-  console.log('exiting, must supply subdomain record name to check')
+  console.log('exiting, must supply (sub)domain record name to check')
+  console.log(JSON.stringify(opts, null, 3))
   process.exit()
 }
 
-const interval = (opts.lookup || {}).interval * 1000 || 10000
+const verbose = (opts.verbose ||'').length
-const timeout = (opts.lookup || {}).timeout * 1000 * 60 || 120000
+const interval = (opts.lookup || {}).interval || 10 // seconds
+const timeout = (opts.lookup || {}).timeout || 5  // minutes
+
+if (verbose) console.log(JSON.stringify(opts, null, 3))
 
 let notify=()=>{} // noop
 const route53 = new Route53(opts.aws ? opts.aws : {profile:'default'})
@@ -25,8 +28,7 @@ const route53 = new Route53(opts.aws ? opts.aws : {profile:'default'})
     const notifier = await Notifier.create(opts.notify)
     notify = notifier.send.bind(notifier)
   }
-
+  if (opts.cron && !opts.debug) {
-  if (opts.cron) {
     console.log('setting up check cron job every', opts.cron,'minutes')
     const cronstr = `0 */${opts.cron} * * * *`
     const job = new CronJob(cronstr, checkIP)
@@ -34,7 +36,7 @@ const route53 = new Route53(opts.aws ? opts.aws : {profile:'default'})
     job.start()
   } else {
     console.log('running check a single time')
-    checkIP
+    checkIP()
   }
 
 })().catch(err => {
@@ -52,24 +54,41 @@ async function checkIP () {
     curr = ip.join('.')
   }
   const saved =  await route53.getZoneRecordValue(rname)
-  if (opts.announce) notify('checking for change in public ip')
+  if (opts.debug) notify('checking for change in public ip',timestamp())
   if (curr !== saved)  {
-    let msg=`For Network:${opts.network}, a new public ip has been detected for ${rname} from ${saved} to ${curr}`
+    let msg=`${timestamp()} Network:${opts.network}, a new public ip has been detected for ${rname} from ${saved} to ${curr}`
-    console.log(msg)
-    notify(msg)
-    msg=JSON.stringify(await route53.updateZoneRecordValue(rname,curr),null,3)
     console.log(msg)
     notify(msg)
+    const res=JSON.stringify(await route53.updateZoneRecordValue(rname,curr),null,3)
+    console.log(res)
+    notify(res)
+    const fail = setTimeout(()=>{
+      clearInterval(check)
+      msg=`${timestamp()}, ${opts.network}: FATAL the pending change of ip address was not realized in ${timeout*(opts.debug ? 10 : 60)} seconds.  Human attention required`
+      console.log(msg)
+      notify(msg)
+    },timeout*1000*(opts.debug ? 10 : 60))
     const check = setInterval(async ()=>{
       if (curr === (await lookup(rname)).address) {
         msg=`Update Succeeded, lookup of ${rname} is now ${curr}`
         clearInterval(check)
-      } else msg=`Update Pending, will check again in ${(opts.lookup || {}).interval || 10 } seconds`
+        clearTimeout(fail)
-      console.log(msg)
+        console.log(msg)
-      notify(msg)
+        notify(msg)
+      } else {
+        msg=`Update Pending, will check again in ${interval} seconds`
+        if (verbose || opts.debug ) {
+          notify(msg)
+          console.log(msg)
+        }
+      }
     }
-      ,(opts.lookup || {}).interval * 1000 || 10000)
+      ,interval*1000)
-  // const fail = setTimeout(,timeout)
+
   } else console.log('Public IP has not changed, nothing to do',  saved)
 
 }
+
+function timestamp() {
+  return new Date().toLocaleString().replace('T', ' ').substring(0, 19)
+}

nodemon.json

@@ -0,0 +1,6 @@
+{
+    "ignoreRoot": [".git"],
+    "watch": ["config/","node_modules/@uci/","node_modules/@uci-utils/","src/","index.js"],
+    "ignore": [".git"],
+    "ext" : "yaml, js"
+}

package.json

@@ -5,7 +5,8 @@
   "main": "src/route53.js",
   "scripts": {
     "start": "node -r esm index.js",
-    "dev": "NODE_ENV=dev nodemon -r esm index.js"
+    "dev": "NODE_ENV=dev nodemon -r esm index.js",
+    "dev:debug": "NODE_APP_INSTANCE=debug npm run dev"
   },
   "author": "David Kebler",
   "license": "MIT",
@@ -22,7 +23,7 @@
   "homepage": "https://github.com/uCOMmandIt/uci-utils#readme",
   "dependencies": {
     "@uci-utils/notify": "^0.1.5",
-    "@uci-utils/notify-email-plugin": "^0.1.5",
+    "@uci-utils/notify-email-plugin": "^0.1.6",
     "@uci-utils/notify-pushsafer-plugin": "^0.1.2",
     "@uci-utils/route53": "^0.1.2",
     "config": "^3.3.2",

run

@@ -0,0 +1,16 @@
+#!/bin/bash
+CONF=$1
+if [ -z "$CONF" ];
+then
+      echo missing configuration argument, aborting
+      exit 1
+fi
+DIR="$(dirname "$(readlink -f "$0")")"
+# echo $DIR
+cd $DIR  || exit
+NODE=$(which node)
+export NODE_ENV=production
+export NODE_APP_INSTANCE=$CONF
+export NODE_ENV=$2
+# echo $NODE
+$NODE -r esm $DIR/index.js

systemd/install

@@ -0,0 +1,7 @@
+#!/bin/bash
+# install template  system space
+DIR="$(dirname "$(readlink -f "$0")")"
+sudo \cp -f $DIR/update-public-ip@.service /etc/systemd/system
+echo "update-public-ip@.service copied to systemd"
+. start
+. persist

systemd/log

@@ -0,0 +1,4 @@
+#!/bin/bash
+CONF=$1
+sudo journalctl --unit=update-public-ip@$CONF.service -n 50 --no-pager
+exit 1

systemd/persist

@@ -0,0 +1,3 @@
+#!/bin/bash
+CONF=$1
+sudo systemctl enable update-public-ip@$CONF

systemd/start

@@ -0,0 +1,11 @@
+#!/bin/bash
+CONF=$1
+if [ -z "$CONF" ];
+then
+      echo missing configuration argument, aborting
+      exit 1
+fi
+sudo systemctl daemon-reload
+sudo systemctl stop update-public-ip@$CONF
+sudo systemctl start update-public-ip@$CONF
+sudo systemctl status update-public-ip@$CONF

systemd/status

@@ -0,0 +1,8 @@
+#!/bin/bash
+CONF=$1
+if [ -z "$CONF" ];
+then
+      echo missing configuration argument, aborting
+      exit 1
+fi
+sudo systemctl status update-public-ip@$CONF

systemd/stop

@@ -0,0 +1,10 @@
+#!/bin/bash
+CONF=$1
+if [ -z "$CONF" ];
+then
+      echo missing configuration argument, aborting
+      exit 1
+fi
+sudo systemctl stop update-public-ip@$CONF
+sudo systemctl status update-public-ip@$CONF
+sudo journalctl --unit=update-public-ip@$CONF.service -n 100 --no-pager

systemd/update-public-ip@.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=Update DNS record at Route53 with LAN public IP
+After=network-online.target
+[Service]
+# if using aws profile files must be in .aws under user home given below.
+User=sysadmin
+Group=sysadmin
+# NODE_ENV and NODE_INSTANCE will determine configuration file.  see config directory in repo
+Environment=NODE_ENV=production
+Environment=NODE_APP_INSTANCE=%i
+WorkingDirectory=/opt/update-public-ip
+ExecStart=/usr/bin/node -r esm /opt/update-public-ip/index.js
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=default.target