DHCP Server start / stop / restart - Fix dashboard refresh

app.js

@@ -30,6 +30,7 @@ app.use('/dhcp_config', require('./routes/dhcp_config'));
 app.use('/dhcp_config_snapshots', require('./routes/dhcp_config_snapshots'));
 app.use('/dhcp_config_snapshot_view', require('./routes/dhcp_config_snapshot_view'));
 app.use('/dhcp_config_save', require('./routes/dhcp_config_save'));
+app.use('/dhcp_start_stop_restart', require('./routes/dhcp_start_stop_restart'));
 app.use('/api_examples', require('./routes/api_examples'));
 app.use('/glass_settings', require('./routes/glass_settings'));
 app.use('/glass_settings_save', require('./routes/glass_settings_save'));

public/assets/js/glass-core.js

@@ -2,7 +2,21 @@
  * Created by cmiles on 8/9/2017.
  */
 
+$( document ).ajaxComplete(function( event, request, settings ) {
+	check_dashboard_active();
+});
+
+function check_dashboard_active() {
+	if(window.location.pathname == "/" && in_dashboard != 1) {
+		in_dashboard = 1;
+	}
+	else {
+		in_dashboard = 0;
+	}
+}
+
 function modal (title, content, buttons) {
+	$('#modal-buttons').html('');
 	$('#modal-title').html(title);
 	$('#modal-body').html(content);
 

public/templates/dhcp_start_stop_restart.html

@@ -0,0 +1,59 @@
+<div class="row">
+    <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
+        <div class="card">
+            <div class="header">
+                <h2>
+                    [title]
+                </h2>
+            </div>
+            <div class="body">
+                [c_content]
+                <div id="dhcp_start_stop_restart_result"></div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script type="text/javascript">
+    function process_action(action) {
+		switch (action) {
+			case "stop":
+				modal(
+					"Are you sure you want to stop server?",
+                    "Stopping the server can be service affecting! Are you sure?",
+                    '<button type="button" class="btn btn-link waves-effect" onclick="process_action(\'confirm_stop\')">STOP SERVER</button>'
+                );
+				break;
+			case "confirm_stop":
+				$('#body-content .btn').attr('disabled', true);
+				$.post( "/dhcp_start_stop_restart", "action=stop", function( data ) {
+					$( "#dhcp_start_stop_restart_result" ).html( data );
+				});
+
+				break;
+			case "restart":
+				modal(
+					"Are you sure you want to restart the server?",
+					"Restarting the server can cause very brief interruption. Are you sure?",
+					'<button type="button" class="btn btn-link waves-effect" onclick="process_action(\'confirm_restart\')">RESTART SERVER</button>'
+				);
+				break;
+			case "confirm_restart":
+				$('#body-content .btn').attr('disabled', true);
+				$.post( "/dhcp_start_stop_restart", "action=restart", function( data ) {
+					$( "#dhcp_start_stop_restart_result" ).html( data );
+				});
+
+				break;
+			case "start":
+				$('#body-content .btn').attr('disabled', true);
+				$.post( "/dhcp_start_stop_restart", "action=start", function( data ) {
+					$( "#dhcp_start_stop_restart_result" ).html( data );
+				});
+
+				break;
+			default:
+				break;
+		}
+	}
+</script>

public/templates/index.html

@@ -105,7 +105,7 @@
                     </a>
                 </li>
                 <li>
-                    <a href="/start_stop_restart" pjax="1">
+                    <a href="/dhcp_start_stop_restart" pjax="1">
                         <i class="material-icons">refresh</i>
                         <span>Start / Stop / Restart</span>
                     </a>
@@ -119,6 +119,13 @@
                     </a>
                 </li>
 
+                <li>
+                    <a href="/glass_alerts" pjax="1">
+                        <i class="material-icons">add_alert</i>
+                        <span>Glass Alerts</span>
+                    </a>
+                </li>
+
                 <li class="header">Glass API</li>
                 <li>
                     <a href="/api_examples" pjax="1">
@@ -155,7 +162,7 @@
 
                 </div>
                 <div class="modal-footer">
-                    <div id="modal-buttons"></div>
+                    <div id="modal-buttons" style="display:inline-block"></div>
                     <button type="button" class="btn btn-link waves-effect" data-dismiss="modal">CLOSE</button>
                 </div>
             </div>
@@ -212,6 +219,8 @@
 
 <script type="text/javascript">
 
+    var in_dashboard = 0;
+
     function get_dashboard() {
 		$.get( "/get_dashboard", function( data ) {
 			$('#body-content').html(data);
@@ -227,20 +236,21 @@
 		});
     }
 
-    console.log(window.location.pathname);
+	dashboard_timer = setInterval(function () {
+		if (window_focus && $('#shared-networks').length && in_dashboard == 1) {
+			get_dashboard();
+		}
+	}, 5000);
 
-    if(window.location.pathname == "/") {
+	get_stats_timer = setInterval(function () {
-		dashboard_timer = setInterval(function () {
+		if (window_focus && $('#cpu-utilization').length && in_dashboard == 1) {
-			if (window_focus && $('#shared-networks').length) {
+			get_stats();
-				get_dashboard();
+		}
-			}
+	}, 5000);
-		}, 5000);
+
-		get_stats_timer = setInterval(function () {
+	if(window.location.pathname == "/") {
-			if (window_focus && $('#cpu-utilization').length) {
+		get_stats();
-				get_stats();
+		get_dashboard();
-			}
-		}, 5000);
-		get_dashboard(); get_stats();
 	}
 
 	var window_focus = true;

routes/dhcp_config_save.js

@@ -31,7 +31,7 @@ router.post('/', function(req, res, next) {
 
 			output = output.replace("\n", "<br>");
 			res.send(
-				'<script type="text/javascript">modal (\'DHCP Config Save\', ' + JSON.stringify('Syntax OK') + ', "");'
+				'<script type="text/javascript">modal (\'DHCP Config Save\', ' + JSON.stringify('Syntax OK <br><br> Config Snapshot created') + ', "");'
 			);
 			/* Read Config */
 			var json_file = require('jsonfile');

routes/dhcp_start_stop_restart.js

@@ -0,0 +1,70 @@
+var express = require('express');
+var router = express.Router();
+var fs = require('fs');
+var template_render = require('../lib/render_template.js');
+
+router.get('/', function(req, res, next) {
+
+	var content = "";
+
+	content = template_render.get_template("dhcp_start_stop_restart");
+	content = template_render.set_template_variable(content, "title", "Start / Stop / Restart");
+
+	var exec = require('child_process').exec;
+
+	exec(' ps aux | grep dhcpd | grep -v "grep"', function(err, stdout, stderr) {
+		is_running = 0;
+		var result = stdout.split("\n");
+		for (var i = 0; i < result.length; i++) {
+			if(/dhcpd/i.test(result[i])){
+				is_running = 1;
+			}
+			// console.log('line ' + result[i]);
+		}
+
+		var return_content = "";
+
+		if(is_running){
+			return_content = return_content + 'DHCP Server is online!<br><br>';
+			return_content = return_content + '<button type="button" onclick="process_action(\'stop\')" class="btn btn-default waves-effect">Stop Server</button> ';
+		}
+		else {
+			return_content = return_content + 'DHCP Server is offline!<br><br>';
+			return_content = return_content + '<button type="button" onclick="process_action(\'start\')" class="btn btn-default waves-effect">Start Server</button> ';
+		}
+
+		return_content = return_content + '<button type="button" onclick="process_action(\'restart\')" class="btn btn-default waves-effect">Restart Server</button> ';
+
+		content = template_render.set_template_variable(content, "c_content", return_content);
+
+		res.send(template_render.get_index_template(content, req.url));
+	});
+});
+
+router.post('/', function(req, res, next) {
+	var request = req.body;
+
+	const execSync = require('child_process').execSync;
+
+	switch (request.action) {
+		case "stop":
+			dhcp_exec = execSync('service isc-dhcp-server stop && sleep 1');
+			res.send("<script type='text/javascript'>notification('DHCP Server Stopped');ignore_cache = 1;do_pjax_request('/dhcp_start_stop_restart');$('#mdModal').modal('hide');</script>");
+			break;
+		case "start":
+			dhcp_exec = execSync('service isc-dhcp-server start');
+			res.send("<script type='text/javascript'>notification('DHCP Server Started');ignore_cache = 1;do_pjax_request('/dhcp_start_stop_restart');</script>");
+			break;
+		case "restart":
+			dhcp_exec = execSync('service isc-dhcp-server restart && sleep 1');
+			res.send("<script type='text/javascript'>notification('DHCP Server Restarted " + dhcp_exec + "');ignore_cache = 1;do_pjax_request('/dhcp_start_stop_restart');$('#mdModal').modal('hide');</script>");
+			break;
+		default:
+			break;
+	}
+
+	console.log(request);
+
+});
+
+module.exports = router;