add graph

spring-security-rest-full/src/main/java/org/baeldung/spring/WebConfig.java

@@ -1,9 +1,13 @@
 package org.baeldung.spring;
 
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.ViewResolver;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
 
 @Configuration
 @ComponentScan("org.baeldung.web")
@@ -14,6 +18,18 @@ public class WebConfig extends WebMvcConfigurerAdapter {
         super();
     }
 
+    @Bean
+    public ViewResolver viewResolver() {
+        final InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
+        viewResolver.setPrefix("/WEB-INF/view/");
+        viewResolver.setSuffix(".jsp");
+        return viewResolver;
+    }
     // API
+    @Override
+    public void addViewControllers(final ViewControllerRegistry registry) {
+        super.addViewControllers(registry);
+        registry.addViewController("/graph.html");
+    }
 
 }

spring-security-rest-full/src/main/java/org/baeldung/web/controller/RootController.java

@@ -51,4 +51,14 @@ public class RootController {
     public String getStatusMetric() {
         return metricService.getStatusMetric();
     }
+
+    @RequestMapping(value = "/metric-graph", method = RequestMethod.GET)
+    @ResponseBody
+    public Object[][] drawMetric() {
+        final Object[][] result = metricService.getGraphData();
+        for (int i = 1; i < result[0].length; i++) {
+            result[0][i] = result[0][i].toString();
+        }
+        return result;
+    }
 }

spring-security-rest-full/src/main/java/org/baeldung/web/metric/MetricService.java

@@ -1,6 +1,10 @@
 package org.baeldung.web.metric;
 
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.HashMap;
+import java.util.Map.Entry;
+import java.util.Set;
 
 import org.springframework.stereotype.Service;
 
@@ -9,12 +13,20 @@ public class MetricService {
 
     private static HashMap<String, HashMap<Integer, Integer>> metricMap = new HashMap<String, HashMap<Integer, Integer>>();
     private static HashMap<Integer, Integer> statusMetric = new HashMap<Integer, Integer>();
+    private static HashMap<String, HashMap<Integer, Integer>> timeMap = new HashMap<String, HashMap<Integer, Integer>>();
+    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
 
     public MetricService() {
         super();
     }
 
     public void increaseCount(final String request, final int status) {
+        increaseMainMetric(request, status);
+        increaseStatusMetric(status);
+        updateTimeMap(status);
+    }
+
+    private void increaseMainMetric(final String request, final int status) {
         HashMap<Integer, Integer> statusMap = metricMap.get(request);
         if (statusMap == null) {
             statusMap = new HashMap<Integer, Integer>();
@@ -28,7 +40,9 @@ public class MetricService {
         }
         statusMap.put(status, count);
         metricMap.put(request, statusMap);
+    }
 
+    private void increaseStatusMetric(final int status) {
         final Integer statusCount = statusMetric.get(status);
         if (statusCount == null) {
             statusMetric.put(status, 1);
@@ -37,6 +51,23 @@ public class MetricService {
         }
     }
 
+    private void updateTimeMap(final int status) {
+        final String time = dateFormat.format(new Date());
+        HashMap<Integer, Integer> statusMap = timeMap.get(time);
+        if (statusMap == null) {
+            statusMap = new HashMap<Integer, Integer>();
+        }
+
+        Integer count = statusMap.get(status);
+        if (count == null) {
+            count = 1;
+        } else {
+            count++;
+        }
+        statusMap.put(status, count);
+        timeMap.put(time, statusMap);
+    }
+
     public String getFullMetric() {
         return metricMap.entrySet().toString();
     }
@@ -44,4 +75,34 @@ public class MetricService {
     public String getStatusMetric() {
         return statusMetric.entrySet().toString();
     }
+
+    public Object[][] getGraphData(){
+        final int colCount = statusMetric.keySet().size()+1;
+        final Set<Integer> allStatus = statusMetric.keySet();
+        final int rowCount = timeMap.keySet().size()+1;
+
+        final Object[][] result = new Object[rowCount][colCount];
+        result[0][0] = "Time";
+
+        int j = 1;
+        for (final int status : allStatus) {
+            result[0][j] = status;
+            j++;
+        }
+        int i = 1;
+        HashMap<Integer, Integer> tempMap;
+        for (final Entry<String, HashMap<Integer, Integer>> entry : timeMap.entrySet()) {
+            result[i][0] = entry.getKey();
+            tempMap = entry.getValue();
+            for (j = 1; j < colCount; j++) {
+                result[i][j] = tempMap.get(result[0][j]);
+                if (result[i][j] == null) {
+                    result[i][j] = 0;
+                }
+            }
+            i++;
+        }
+
+        return result;
+    }
 }

spring-security-rest-full/src/main/webapp/WEB-INF/view/graph.jsp

@@ -0,0 +1,42 @@
+<html>
+<head>
+<title>Metric Graph</title>
+<script
+	src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
+<script type="text/javascript" src="https://www.google.com/jsapi"></script>
+<script type="text/javascript">
+	google.load("visualization", "1", {
+		packages : [ "corechart" ]
+	});
+
+	function drawChart() {
+		$.get("http://localhost:8080/spring-security-rest-full/metric-graph",
+				function(mydata) {
+
+					var data = google.visualization.arrayToDataTable(mydata);
+					var options = {
+						title : 'Website Metric',
+						hAxis : {
+							title : 'Time',
+							titleTextStyle : {
+								color : '#333'
+							}
+						},
+						vAxis : {
+							minValue : 0
+						}
+					};
+
+					var chart = new google.visualization.AreaChart(document
+							.getElementById('chart_div'));
+					chart.draw(data, options);
+
+				});
+
+	}
+</script>
+</head>
+<body onload="drawChart()">
+	<div id="chart_div" style="width: 900px; height: 500px;"></div>
+</body>
+</html>