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working version 

Signed-off-by: Johannes Theiner <j.theiner@live.de>
#SPM-26: add work #3h development
This commit is contained in:
Johannes Theiner 2019-05-25 17:10:25 +02:00
parent 160808e10f
commit 20a3743ec2
9 changed files with 92 additions and 59 deletions
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16
src/main/java/de/hsel/spm/baudas/web/AuthenticationFilter.java
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@ -1,6 +1,12 @@
package de.hsel.spm.baudas.web;
import javax.servlet.*;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@ -19,17 +25,19 @@ public class AuthenticationFilter implements Filter{
/**
* Called by the web container to indicate to a filter that it is being placed into service. This filter manages the authentication.
* @param fConfig This parameter provides access to everything the code needs to work.
*
* @param filterConfig This parameter provides access to everything the code needs to work.
* @throws ServletException Defines a general exception a servlet can throw when it encounters difficulty.
*/
public void init(FilterConfig fConfig) throws ServletException {
this.context = fConfig.getServletContext();
public void init(FilterConfig filterConfig) throws ServletException {
this.context = filterConfig.getServletContext();
this.context.log("AuthenticationFilter initialized");
}
/**
* The doFilter method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain.
*
* @param request This parameter provides access to everything the code needs to work.
* @param response This parameter provides access to everything the code needs to issue a response.
* @param chain This parameter allows passing request along the chain of potential handlers until one of them handles the request.

69
src/main/java/de/hsel/spm/baudas/web/Data.java
View File

@ -10,8 +10,12 @@ import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* manages data about .csv files.
@ -23,7 +27,7 @@ import java.util.concurrent.ConcurrentLinkedQueue;
public class Data {
@Getter
private static ConcurrentLinkedQueue<SavedFile> files = new ConcurrentLinkedQueue<>();
private static ConcurrentMap<String, List<SavedFile>> files = new ConcurrentHashMap<>();
/**
@ -33,44 +37,57 @@ public class Data {
* @return path to save file to
*/
@NotNull
static Path add(@NotNull String name) {
//cleanup old files
if (files.isEmpty()) {
static Path add(@NotNull String name, @NotNull String session) {
UUID uuid = UUID.randomUUID();
if (!files.containsKey(session))
files.put(session, new ArrayList<>());
if (files.get(session).size() >= 5) {
SavedFile file = files.get(session).iterator().next();
if (!get(file.getUuid()).delete()) {
System.err.println("failed to delete file..." + file);
}
files.get(session).remove(file);
}
files.get(session).add(new SavedFile(uuid, name, LocalDateTime.now()));
return Paths.get(getFileName(uuid));
}
/**
* delete all files for session.
*
* @param session session id
*/
static void delete(String session) {
for (SavedFile file : files.get(session)) {
if (!get(file.getUuid()).delete())
System.err.println("failed to delete file..." + file);
}
files.remove(session);
//deleting all files older than x days.
int days = 30;
try {
Files.list(Paths.get("")).forEach(path -> {
if (path.toFile().getName().endsWith(".csv")) {
if (path.toFile().getName().endsWith("*.csv")) {
long diff = new Date().getTime() - path.toFile().lastModified();
if (diff > (long) days * 24 * 60 * 60 * 1000) {
try {
Files.delete(path);
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
} catch (IOException ex) {
ex.printStackTrace();
}
}
Path path;
UUID uuid = UUID.randomUUID();
if (files.size() >= 5) {
//remove last and add new one
SavedFile file = files.poll();
if (!get(file.getUuid()).delete()) {
System.out.println("failed to delete file...");
}
path = Paths.get(getFileName(uuid));
files.offer(new SavedFile(uuid, name, LocalDateTime.now()));
} else {
files.add(new SavedFile(uuid, name, LocalDateTime.now()));
path = Paths.get(getFileName(uuid));
}
return path;
}
/**
* generates File from uuid.
*

2
src/main/java/de/hsel/spm/baudas/web/Files.java
View File

@ -31,6 +31,6 @@ public class Files extends HttpServlet {
resp.setCharacterEncoding(StandardCharsets.UTF_8.name());
PrintWriter out = resp.getWriter();
Gson gson = new Gson();
out.print(gson.toJson(Data.getFiles()));
out.print(gson.toJson(Data.getFiles().get(req.getSession().getId())));
}
}

1
src/main/java/de/hsel/spm/baudas/web/LoginServlet.java
View File

@ -23,6 +23,7 @@ public class LoginServlet extends HttpServlet {
/**
* This is a Servlet that manages the Login and creates Sessions.
*
* @param request This parameter provides access to everything the code needs to work.
* @param response This parameter provides access to everything the code needs to issue a response.
* @throws ServletException Defines a general exception a servlet can throw when it encounters difficulty.

7
src/main/java/de/hsel/spm/baudas/web/LogoutServlet.java
View File

@ -1,12 +1,11 @@
package de.hsel.spm.baudas.web;
import java.io.IOException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
/**
* Servlet implementation class LogoutServlet.
@ -19,14 +18,16 @@ public class LogoutServlet extends HttpServlet {
/**
* This is a Servlet that manages the Logout and deletes Sessions.
*
* @param request This parameter provides access to everything the code needs to work.
* @param response This parameter provides access to everything the code needs to issue a response.
* @throws IOException Signals that an I/O exception of some sort has occurred. This class is the general class of exceptions produced by failed or interrupted I/O operations.
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
HttpSession session = request.getSession(false);
HttpSession session = request.getSession();
if (session != null) {
Data.delete(session.getId());
session.invalidate();
}
response.sendRedirect(request.getContextPath() + "/");

8
src/main/java/de/hsel/spm/baudas/web/TopFlopArticleDiagram.java
View File

@ -12,9 +12,15 @@ import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
/**
* top/flop articles list diagram.
*
* @author Johannes Theiner
* @version 0.1
* @since 0.1

2
src/main/java/de/hsel/spm/baudas/web/Upload.java
View File

@ -42,7 +42,7 @@ public class Upload extends HttpServlet {
InputStream inputStream = filePart.getInputStream();
Path path = Data.add(fileName);
Path path = Data.add(fileName, req.getSession().getId());
if (!Files.exists(path)) {
Files.createFile(path);
}

4
src/main/webapp/header.jsp
View File

@ -38,12 +38,12 @@
<ul class="right hide-on-med-and-down">
<li><a data-target="slide-out" class="sidenav-trigger show-on-large"><i
class="material-icons left">menu</i>Men&uuml;</a></li><!--Sidenav-->
<li><a href="login.html"><i class="material-icons left">person_outline</i>Logout</a></li><!--Logout-->
<li><a href="logout"><i class="material-icons left">person_outline</i>Logout</a></li><!--Logout-->
</ul>
<ul class="right">
<li><a href="#" data-target="slide-out" class="sidenav-trigger"><i class="material-icons">menu</i></a>
</li><!--Sidenav-->
<li><a href="login.html" class="sidenav-trigger"><i class="material-icons">person_outline</i></a></li>
<li><a href="logout" class="sidenav-trigger"><i class="material-icons">person_outline</i></a></li>
<!--Logout-->
</ul>
</div>