View Javadoc

1   /*
2    * Copyright 2001-2004 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.jdiagnose.library.web.spring;
17  
18  import java.text.ParseException;
19  import java.text.SimpleDateFormat;
20  import java.util.Date;
21  
22  import javax.servlet.http.HttpServletRequest;
23  import javax.servlet.http.HttpServletResponse;
24  import javax.servlet.http.HttpSession;
25  
26  import org.jdiagnose.remote.provider.DefaultSystemHolder;
27  import org.jdiagnose.remote.provider.MutableSystemProvider;
28  import org.jdiagnose.remote.system.RemoteSystemCreator;
29  import org.springframework.validation.BindException;
30  import org.springframework.web.servlet.ModelAndView;
31  import org.springframework.web.servlet.mvc.SimpleFormController;
32  import org.springframework.web.servlet.view.RedirectView;
33  
34  /***
35   * @author jmccrindle
36   */
37  public class QueryFormController extends SimpleFormController {
38  
39      private SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
40      private SimpleDateFormat systemDateFormat = new SimpleDateFormat("HH:mm:ss");
41      private MutableSystemProvider provider = null;
42      private RemoteSystemCreator creator = null;
43      private SessionSystemsFactory sessionSystemsFactory = null;
44      private String sessionSystemsKey = "sessionSystemsKey";
45  
46      /* (non-Javadoc)
47       * @see org.springframework.web.servlet.mvc.AbstractFormController#formBackingObject(javax.servlet.http.HttpServletRequest)
48       */
49      protected Object formBackingObject(HttpServletRequest request)
50              throws Exception {
51          QueryCommand command = new QueryCommand();
52          command.setSystem("Query at " + systemDateFormat.format(new Date()));
53          command.setStartDate(System.currentTimeMillis() - (24 * 60 * 60 * 1000));
54          command.setEndDate(System.currentTimeMillis());
55          return command;
56      }
57      
58      /* (non-Javadoc)
59       * @see org.springframework.web.servlet.mvc.BaseCommandController#onBind(javax.servlet.http.HttpServletRequest, java.lang.Object)
60       */
61      protected void onBind(HttpServletRequest request, Object command, BindException errors)
62              throws Exception {
63          
64          QueryCommand queryCommand = (QueryCommand) command;
65          
66          String startDate = request.getParameter("start.date");
67          String startHours = request.getParameter("start.hours");
68          String startMinutes = request.getParameter("start.minutes");
69  
70          try {
71              queryCommand.setStartDate(dateFromStrings(startDate, startHours,
72                      startMinutes));
73          } catch (ParseException e) {
74              errors.rejectValue("startDate", "errors.date.invalid", "Invalid Date");
75          }
76          
77          String endDate = request.getParameter("end.date");
78          String endHours = request.getParameter("end.hours");
79          String endMinutes = request.getParameter("end.minutes");
80  
81          try {
82              queryCommand.setEndDate(dateFromStrings(endDate, endHours, endMinutes));
83          } catch (ParseException e) {
84              errors.rejectValue("endDate", "errors.date.invalid", "Invalid Date");
85          }
86      }
87  
88      /***
89       * @param startDate
90       * @param startHours
91       * @param startMinutes
92       * @return
93       * @throws ParseException
94       */
95      private long dateFromStrings(String startDate, String startHours, String startMinutes) throws ParseException {
96          Date date = new Date();
97          if(startDate != null) {
98              date = dateFormat.parse(startDate);
99          }
100         long dateAsLong = date.getTime() + (Integer.parseInt(startHours) * 60 * 60 * 1000)
101                 + (Integer.parseInt(startMinutes)) * 60 * 1000;
102         return dateAsLong;
103     }
104     
105     /* (non-Javadoc)
106      * @see org.springframework.web.servlet.mvc.SimpleFormController#onSubmit(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Object, org.springframework.validation.BindException)
107      */
108     protected ModelAndView onSubmit(HttpServletRequest request,
109             HttpServletResponse response, Object command, BindException errors)
110             throws Exception {
111         QueryCommand queryCommand = (QueryCommand) command;
112         String systemHolderId = provider.nextId();
113         DefaultSystemHolder holder = new DefaultSystemHolder();
114         holder.setDescription(queryCommand.getSystem());
115         holder.setId(systemHolderId);
116         holder.setRemoteSystem(creator.getRemoteSystem(queryCommand));
117         provider.addHolder(holder);
118         HttpSession session = request.getSession(true);
119         SessionSystems sessionSystems = (SessionSystems) session.getAttribute(sessionSystemsKey);
120         if(sessionSystems == null) {
121             sessionSystems = sessionSystemsFactory.create();
122             session.setAttribute(sessionSystemsKey, sessionSystems);
123         }
124         sessionSystems.getIds().add(systemHolderId);
125         return new ModelAndView(new RedirectView(request.getContextPath() + "/hosts.htm?system=" + systemHolderId));
126     }
127     
128     public void setDateFormat(SimpleDateFormat dateFormat) {
129         this.dateFormat = dateFormat;
130     }
131     public void setProvider(MutableSystemProvider provider) {
132         this.provider = provider;
133     }
134     public void setSystemDateFormat(SimpleDateFormat systemDateFormat) {
135         this.systemDateFormat = systemDateFormat;
136     }
137     public void setCreator(RemoteSystemCreator creator) {
138         this.creator = creator;
139     }
140     public void setSessionSystemsFactory(
141             SessionSystemsFactory sessionSystemsFactory) {
142         this.sessionSystemsFactory = sessionSystemsFactory;
143     }
144     public void setSessionSystemsKey(String sessionSystemsKey) {
145         this.sessionSystemsKey = sessionSystemsKey;
146     }
147 }