温水青蛙 — Thu, 02 Aug 2012 16:42:00 GMT

最�q�一�D�|��间由于服务器响应有些异常�Q�所以花了半天做了一个简单实时监控页面。如下图

基本原理如下�Q?/div>

1、��用Filter拦截��h��Q�采集服务器响应数据�?/strong>

若是要收集响应状态码注意构造新的HttpServletResponse

2
3 import javax.servlet.http.HttpServletResponseWrapper
4 import javax.servlet.http.HttpServletResponse
5
6 /**
7  * 功能描述
8  * @author huzl
9  * @version 0.0.1, 12-7-30 下午3:11
10  */
11 class StatusExposingServletResponse extends HttpServletResponseWrapper {
12     private Integer status = SC_OK;;
13
14     public Integer getStatus() {
15         return status
16     }
17
18     def StatusExposingServletResponse(HttpServletResponse response) {
19         super(response);
20     }
21
22     @Override
23     void sendError(int sc, String msg) {
24         super.sendError(sc, msg)
25         status = sc;
26     }
27
28     @Override
29     void sendError(int sc) {
30         super.sendError(sc)
31         status = sc;
32     }
33
34     @Override
35     void sendRedirect(String location) {
36         super.sendRedirect(location)
37         status = SC_MOVED_TEMPORARILY;
38     }
39
40     @Override
41     void setStatus(int sc) {
42         super.setStatus(sc)
43         status = sc;
44     }
45
46     @Override
47     void setStatus(int sc, String sm) {
48         super.setStatus(sc, sm)
49         status = sc;
50     }
51
52 }
53
54 public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain){
55         long startTime = System.currentTimeMillis();
56         StatusExposingServletResponse response = new StatusExposingServletResponse(servletResponse);
57         Throwable exception = null;
58         try {
59             filterChain.doFilter(servletRequest,response)
60         } catch (Throwable e) {
61             exception = e;
62             throw e;
63         }finally{
64             statisticResult.completeRequest(servletRequest,response,exception,startTime);
65         }
66     }

若只�l�计错误状态码则区分Response Code是否大于400�Q�小�?00的都是正��响�?/div>
�?00�Q�OK�Q?206�Q�断点箋�?,301(�怹�重定�?,302(临时重定�?,304�Q�内�Ҏ(gu��)��?,大于�{�于400的状态都是错误响应，计算响应速度区间和��^均响应时间的代码我就不脓(chu��ng)�?/div>
2、定时程序或�U�程把数据入库或保存到内存中�?/strong>
��量不要使用java内嵌数据库如hsqldb�Q�H2�{�，因�ؓ(f��)�q�些内存数据库运行时�?x��)把所有数据加到内存中�Q�不太适合保存数据采集�l�果
3、��用Highcharts�l�制监控��面
可以参照官网例子http://www.highcharts.com/demo/dynamic-update
1 var charts = new Array();
  2         var serverCount = 6;
  3         var lastTimes = new Array();
  4         var max = ${params.int("max")?:120};
  5         $(document).ready(function() {
  6             Highcharts.setOptions({
  7                 global: {
  8                     useUTC: false
  9                 }
10             });
11
12
13             for (var i = 0; i < serverCount; i++) {
14                 charts[i] = new Highcharts.Chart({
15                     chart: {
16                         renderTo: 'container' + i,
17                         type: 'spline',
18                         events: {
19                             load: function() {
20
21                                 // set up the updating of the chart each second
22                                 var series = this.series;
23                                 var serverIndex = i;
24                                 lastTimes[serverIndex] = 0;
25                                 var loadData = function() {
26                                                                         $.getJSON("http://${request.serverName}:${request.serverPort}${request.contextPath}/toolkits/queryStatistics.gsp", {"lasTime":lastTimes[serverIndex],"proxy":true,"index":serverIndex,"max":max}, function(data) {
27                                         for (var k = 0; k < series.length; k++) {
28                                             for (var j = 0; j < data[k].length; j++) {
29                                                 var point = data[k][j];
30                                                 var isShift = series[k].data.length >= max;
31                                                 console.log("series " + k + ".data.length=" + series[k].data.length);
32                                                 var lastTime = 0;
33                                                 if (series[k].data.length > 0)
34                                                     lastTime = series[k].data[series[k].data.length - 1].x;
35                                                 if (point[0] > lastTime)
36                                                     series[k].addPoint([point[0],point[1]], true, isShift);
37                                                 lastTimes[serverIndex] = point[0];
38                                             }
39                                         }
40                                     })
41                                 };
42
43                                 loadData();
44                                 setInterval(loadData, 60000);
45                             }
46                         }
47                     },
48                     title: {
49                         text: '讉K��量实时监�?
50                     },
51                     xAxis: [
52                         {
53                             type: 'datetime',
54                             tickPixelInterval: 120
55                         }
56                     ],
57                     yAxis: [
58                         {
59                             title: {
60                                 text: '总请�?分钟',
61                                 style: {
62                                     color: '#3E576F'
63                                 }
64                             }
65                         },
66                         {
67                             title: {
68                                 text: '�q�_��响应旉��',
69                                 style: {
70                                     color: '#00AA00'
71                                 }
72                             },opposite:true
73                         }
74                     ],
75                     plotOptions: {
76                         spline: {
77                             marker:{
78                                 enabled: false,
79                                 states: {
80                                     hover: {
81                                         enabled: true,
82                                         symbol: 'circle',
83                                         radius: 5,
84                                         lineWidth: 1
85                                     }
86                                 }
87                             }
88                         }
89                     },
90                     tooltip: {
91                         formatter: function() {
92                             return '' + this.series.name + '
' +
93                                     Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '
' +
94                                     Highcharts.numberFormat(this.y, 2);
95                         }
96                     },
97                     legend: {
98                         enabled: true
99                     },
100                     exporting: {
101                         enabled: false
102                     },
103                     series: [
104                         {
105                             name: '总请求数',
106                             data: []
107                         },
108                         {
109                             name: '错误��h��?,
110                             data: []
111                         },
112                         {
113                             name: '�q�_��响应旉��',
114                             yAxis:1,
115                             data: []
116                         }
117                     ]
118                 });
119             }
120
121         })

需要注意的是：(x��)
1、在series的load事�g中��用ajax定时加蝲数据�Q�需要控制当前chart中的Point数据量，
series.addPoint(point, true, isShift);
当series中Point数量��过指定��|��讑֮�isShift为true�Q�就可以�U�除�W�一个Point�Q�防止浏览器内存占用太大无响�?/div>
2、ajax��h��时只��h��最新采集数据，所以每�ơ加载采集数据后把最后时间保留下来，ajax��h��时把当前chart中最后时间带上，获取最新数�?br />3、其他非关键代码��׃��附上了，因�ؓ(f��)使用grails工程而且与项目xiangg

温水青蛙 2012-08-03 00:42 发表评论

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