Change the fake feature for file descriptor leak

k-tamura · Apr 12, 2017 · 1167428 · 1167428
1 parent 2ded43b
commit 1167428
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Showing 3 changed files with 50 additions and 9 deletions.
diff --git a/src/main/java/org/t246osslab/easybuggy/troubles/FileDescriptorLeakServlet.java b/src/main/java/org/t246osslab/easybuggy/troubles/FileDescriptorLeakServlet.java
@@ -1,8 +1,11 @@
 package org.t246osslab.easybuggy.troubles;
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileOutputStream;
+import java.io.FileReader;
 import java.io.IOException;
+import java.io.OutputStreamWriter;
 import java.util.Date;
 import java.util.Locale;
 
@@ -21,25 +24,53 @@
 @WebServlet(urlPatterns = { "/filedescriptorleak" })
 public class FileDescriptorLeakServlet extends HttpServlet {
 
+    private static final int MAX_DISPLAY_COUNT = 15;
     private static final Logger log = LoggerFactory.getLogger(FileDescriptorLeakServlet.class);
+    private long count = 0;
 
     protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
 
-        StringBuilder bodyHtml = new StringBuilder();
         Locale locale = req.getLocale();
-        bodyHtml.append(MessageUtils.getMsg("label.current.time", locale) + ": ");
-        bodyHtml.append(new Date());
-        bodyHtml.append("<br><br>");
+        StringBuilder bodyHtml = new StringBuilder();
         try {
-            File file = new File(System.getProperty("java.io.tmpdir"), "test.txt");
-            FileOutputStream fos1 = new FileOutputStream(file);
-            bodyHtml.append(MessageUtils.getInfoMsg("msg.file.descriptor.leak.occur", req.getLocale()));
+            File file = new File(req.getServletContext().getAttribute("javax.servlet.context.tempdir").toString(),
+                    "test.txt");
+            FileOutputStream fos1 = new FileOutputStream(file, true);
+            OutputStreamWriter osw = new OutputStreamWriter(fos1);
+            osw.write("<tr>");
+            osw.write("<td>" + new Date().toString() + "</td>");
+            osw.write("<td>" + req.getRemoteAddr() + "</td>");
+            osw.write("<td>" + req.getRequestedSessionId() + "</td>");
+            osw.write("</tr>" + System.getProperty("line.separator"));
+            osw.flush();
+            count++;
+
+            BufferedReader br = new BufferedReader(new FileReader(file));
+            bodyHtml.append("<p>" + MessageUtils.getMsg("description.access.history", req.getLocale()) + "</p>");
+            bodyHtml.append(
+                    "<table class=\"table table-striped table-bordered table-hover\" style=\"font-size:small;\">");
+            bodyHtml.append("<th>" + MessageUtils.getMsg("label.access.time", locale) + "</th>");
+            bodyHtml.append("<th>" + MessageUtils.getMsg("label.ip.address", locale) + "</th>");
+            bodyHtml.append("<th>" + MessageUtils.getMsg("label.session.id", locale) + "</th>");
+            int headerLength = bodyHtml.length();
+            String line;
+            long currentLineNum = 0;
+            while ((line = br.readLine()) != null) {
+                if (count - currentLineNum <= MAX_DISPLAY_COUNT) {
+                    bodyHtml.insert(headerLength, line);
+                }
+                currentLineNum++;
+            }
+            bodyHtml.append("</table>");
         } catch (Exception e) {
             log.error("Exception occurs: ", e);
-            bodyHtml.append(MessageUtils.getErrMsg("msg.unknown.exception.occur", new String[]{e.getMessage()}, locale));
+            bodyHtml.append(
+                    MessageUtils.getErrMsg("msg.unknown.exception.occur", new String[] { e.getMessage() }, locale));
             bodyHtml.append(e.getLocalizedMessage());
         } finally {
-            HTTPResponseCreator.createSimpleResponse(req, res, MessageUtils.getMsg("title.current.time", locale), bodyHtml.toString());
+            bodyHtml.append(MessageUtils.getInfoMsg("msg.file.descriptor.leak.occur", req.getLocale()));
+            HTTPResponseCreator.createSimpleResponse(req, res, MessageUtils.getMsg("title.access.history", locale),
+                    bodyHtml.toString());
         }
     }
 }
diff --git a/src/main/resources/messages_en.properties b/src/main/resources/messages_en.properties
@@ -1,3 +1,4 @@
+description.access.history=Access history in this page (The latest 15 records).
 description.capitalize.string=If you enter a string, then the capitalized string is shown.
 description.design.page=You can change design of this page. Please click one of the links below and change \
 this page to your style.
@@ -8,6 +9,7 @@ description.random.string.generator=If you enter a character count, then a rando
 description.reverse.string=If you enter a string, then the reversed string is shown.
 description.test.regular.expression=Please test if an input string matches the regular expression <code>^([a-z0-9]+[-]{0,1}){1,100}$</code>.
 description.send.mail=You can send a mail to the site administrator.
+label.access.time=Access Time
 label.available.characters=Available Characters
 label.asc=asc
 label.attach.file=Attach File
@@ -22,6 +24,7 @@ label.execution.result=Execution Result:
 label.goto.admin.page=Go to admin main page
 label.go.to.main=Go to main page
 label.history.back=Back
+label.ip.address=IP Address
 label.json.string=JSON String
 label.mail=Mail Address
 label.login=Log in
@@ -36,6 +39,7 @@ label.password=Password
 label.phone=Phone
 label.reversed.string=Reversed String
 label.secret=Secret Number
+label.session.id=Session ID
 label.signs=Signs
 label.string=String
 label.subject=Subject
@@ -176,6 +180,7 @@ style.name.monochro=Monochrome
 style.description.monochro=Monochrome header and footer are used.
 style.name.noframe=No Frame
 style.description.noframe=No header and footer are used.
+title.access.history=Access History
 title.admins.main.page=Main Page for Administrators
 title.current.date=Display Current Date
 title.current.time=Display Current Time

diff --git a/src/main/resources/messages_ja.properties b/src/main/resources/messages_ja.properties
@@ -1,3 +1,4 @@
+description.access.history=\u3053\u306e\u30da\u30fc\u30b8\u306e\u30a2\u30af\u30bb\u30b9\u5c65\u6b74 (\u6700\u65b0\u306e15\u4ef6)
 description.capitalize.string=\u6587\u5b57\u5217\u3092\u5165\u529b\u3059\u308b\u3068\u3001\u6587\u5b57\u5217\u306e\u5148\u982d\u3092\u5927\u6587\u5b57\u306b\u3057\u3066\u8868\u793a\u3057\u307e\u3059\u3002
 description.design.page=\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u30c7\u30b6\u30a4\u30f3\u306e\u5fae\u8abf\u6574\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u306e\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u3001\
 \u3053\u306e\u30da\u30fc\u30b8\u3092\u304a\u597d\u307f\u306e\u30b9\u30bf\u30a4\u30eb\u306b\u5909\u66f4\u3057\u3066\u4e0b\u3055\u3044\u3002
@@ -8,6 +9,7 @@ description.random.string.generator=\u6587\u5b57\u6570\u3092\u5165\u529b\u3059\u
 description.reverse.string=\u6587\u5b57\u5217\u3092\u5165\u529b\u3059\u308b\u3068\u3001\u6587\u5b57\u5217\u304c\u9006\u8ee2\u3057\u3066\u8868\u793a\u3055\u308c\u307e\u3059\u3002
 description.test.regular.expression=\u6b63\u898f\u8868\u73fe <code>^([a-z0-9]+[-]{0,1}){1,100}$</code> \u306b\u4e00\u81f4\u3059\u308b\u6587\u5b57\u5217\u304b\u30c6\u30b9\u30c8\u3057\u3066\u4e0b\u3055\u3044\u3002
 description.send.mail=\u30b5\u30a4\u30c8\u306e\u7ba1\u7406\u8005\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002
+label.access.time=\u30a2\u30af\u30bb\u30b9\u6642\u523b
 label.available.characters=\u5229\u7528\u53ef\u80fd\u306a\u6587\u5b57
 label.asc=\u6607\u9806
 label.attach.file=\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb
@@ -22,6 +24,7 @@ label.execution.result=\u5b9f\u884c\u7d50\u679c:
 label.goto.admin.page=\u7ba1\u7406\u8005\u30e1\u30a4\u30f3\u30da\u30fc\u30b8\u3078
 label.go.to.main=\u30e1\u30a4\u30f3\u30da\u30fc\u30b8\u3078
 label.history.back=\u623b\u308b
+label.ip.address=IP\u30a2\u30c9\u30ec\u30b9
 label.json.string=JSON\u6587\u5b57\u5217
 label.login=\u30ed\u30b0\u30a4\u30f3
 label.login.user.id=\u30ed\u30b0\u30a4\u30f3\u30e6\u30fc\u30b6\u30fcID
@@ -36,6 +39,7 @@ label.password=\u30d1\u30b9\u30ef\u30fc\u30c9
 label.phone=\u96fb\u8a71\u756a\u53f7
 label.reversed.string=\u9006\u8ee2\u3057\u305f\u6587\u5b57\u5217
 label.secret=\u6697\u8a3c\u756a\u53f7
+label.session.id=\u30bb\u30c3\u30b7\u30e7\u30f3ID
 label.signs=\u8a18\u53f7
 label.subject=\u4ef6\u540d
 label.submit=\u9001\u4fe1
@@ -176,6 +180,7 @@ style.name.monochro=\u30e2\u30ce\u30af\u30ed\u30fc\u30e0
 style.description.monochro =\u30e2\u30ce\u30af\u30ed\u306e\u30d8\u30c3\u30c0\u30fc\u3068\u30d5\u30c3\u30bf\u30fc\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002
 style.name.noframe=\u30d5\u30ec\u30fc\u30e0\u306a\u3057
 style.description.noframe=\u30d8\u30c3\u30c0\u3068\u30d5\u30c3\u30bf\u306f\u4f7f\u7528\u3055\u308c\u307e\u305b\u3093\u3002
+title.access.history=\u30a2\u30af\u30bb\u30b9\u5c65\u6b74
 title.admins.main.page=\u7ba1\u7406\u8005\u5411\u3051\u30e1\u30a4\u30f3\u30da\u30fc\u30b8
 title.current.date=\u73fe\u5728\u65e5\u4ed8\u306e\u8868\u793a
 title.current.time=\u73fe\u5728\u6642\u523b\u306e\u8868\u793a