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diff src/nabble/view/lib/NabbleErrorHandler.jtp @ 0:7ecd1a4ef557
add content
author: Franklin Schmidt <fschmidt@gmail.com>
date: Thu, 21 Mar 2019 19:15:52 -0600
children: 18cf4872fd7f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/nabble/view/lib/NabbleErrorHandler.jtp	Thu Mar 21 19:15:52 2019 -0600
@@ -0,0 +1,262 @@
+<%
+package nabble.view.lib;
+
+import fschmidt.util.java.HtmlUtils;
+import fschmidt.util.servlet.ServletUtils;
+import nabble.model.Init;
+import nabble.model.Site;
+import nabble.model.UpdatingException;
+import nabble.model.User;
+import org.eclipse.jetty.http.HttpGenerator;
+import org.eclipse.jetty.server.Request;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.io.Writer;
+
+
+public final class NabbleErrorHandler extends org.eclipse.jetty.server.handler.ErrorHandler {
+
+	private static final Logger logger = LoggerFactory.getLogger(NabbleErrorHandler.class);
+	private HttpServletResponse response;
+
+	public void handle(String string, Request request, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws IOException {
+		this.response = httpServletResponse;
+		super.handle(string, request, httpServletRequest, httpServletResponse);
+	}
+
+	protected void writeErrorPage(HttpServletRequest request, Writer writer, int code, String message, boolean showStacks)
+        throws IOException
+    {
+		if (code == HttpServletResponse.SC_SERVICE_UNAVAILABLE) {
+			serviceUnavailablePage(writer);
+			return;
+		}
+		if (message == null)
+			message = HttpGenerator.getReasonBuffer(code).toString();
+
+		Throwable throwable = (Throwable)request.getAttribute(NabbleErrorFilter.WORK_AROUND_ERROR_EXCEPTION);
+		if (UpdatingException.isIn(throwable)) {
+			logger.error("Updating database: "+ServletUtils.getCurrentURL(request));
+			databaseUpdatePage(writer);
+			return;
+		}
+		try {
+			writeMyErrorPage(request,writer,code,message,showStacks, throwable);
+		} catch (ServletException e) {
+			logger.error(ServletUtils.getCurrentURL(request), e);
+			throw new RuntimeException(e);
+		} catch (RuntimeException e) {
+			logger.error(ServletUtils.getCurrentURL(request), e);
+			throw e;
+		}
+	}
+
+    private void writeMyErrorPage(HttpServletRequest request, Writer writer, int code, String message, boolean showStacks, Throwable throwable)
+        throws IOException, ServletException
+    {
+		PrintWriter out = new PrintWriter(writer);
+		boolean hasTweaks = false;
+		boolean isAdmin = false;
+		String homeLink;
+		Site site = null;
+		try {
+			site = Jtp.getSite(request);
+		} catch(RuntimeException e) {}
+		if( site == null ) {
+			homeLink = "<a href='" + Jtp.homePage() + "'>Nabble</a>";
+		} else {
+			homeLink = Jtp.link(site.getRootNode());
+			hasTweaks = site.getCustomTweaks().size() > 0;
+			User user = Jtp.getUser(request, response);
+			isAdmin = user != null && (site.getRootNode().getOwner().equals(user) || Permissions.isInGroup(user, "Administrators"));
+		}
+		%>
+		<html>
+			<head>
+				<% writeErrorPageHead(request,writer,code,message); %>
+				<META NAME="robots" CONTENT="noindex,nofollow">
+				<link rel="stylesheet" href="<%=Shared.getCssPath()%>" type="text/css" />
+				<style type="text/css">
+					p { margin: .3em 0 0; }
+					.error-details {
+						border: 1px solid gray;
+						padding: .5em;
+						width:90%;
+						margin-left:2.5%;
+						position: relative;
+						overflow-x:scroll;
+					}
+				</style>
+			</head>
+			<body>
+				<%
+				String uri = request.getRequestURI();
+		        if (uri!=null) {
+					uri = HtmlUtils.htmlEncode(uri);
+		        }
+				%>
+				<div class="nabble" id="nabble">
+					<div class="top-bar">
+						<div class="breadcrumbs" style="float:left;">
+							<%=homeLink%>
+						</div>
+					</div>
+					<%
+					if (throwable != null) {
+						if( throwable instanceof ServletException ) {
+							if( MinorServletException.isIn(throwable) ) {
+								logger.info(ServletUtils.getCurrentURL(request), throwable);
+							} else {
+								logger.warn(ServletUtils.getCurrentURL(request), throwable);
+							}
+						} else {
+							logger.error(ServletUtils.getCurrentURL(request), throwable);
+						}
+						%>
+						<h1>Oops... An error has occurred</h1>
+
+						Please contact <a href="<%=Jtp.supportUrl()%>" target="_new">Nabble Support</a> and explain what you did to cause this error.
+						Your feedback is very important to us.
+
+						<% if (hasTweaks) { %>
+							<% if (isAdmin) { %>
+								<div class="info-message rounded" style="margin-top:1em;padding:.5em .3em">
+									<h3 style="margin-top:0;padding-top:0">Modified NAML Code</h3>
+									<%=site.getRootNode().getSubjectHtml()%> has modified NAML code and this could be the cause of the error below.
+									Please take a careful look at your changes and try to make sure your code is not broken.<br/>
+								</div>
+							<% } %>
+							<div style="margin:1.2em 0;font-weight:bold">
+								<img src="/images/tool.png" width="16" height="17" style="vertical-align:-25%"/>
+								<a href="/template/NamlEditor.jtp">Go to NAML Editor</a>
+							</div>
+						<% } %>
+
+						<h2 style="margin-top:1em">More Details</h2>
+						<div class="error-details light-bg-color">
+							<h3>Error <%=code%></h3>
+							<pre><%=HtmlUtils.htmlEncode(message)%></pre>
+							<% if (throwable.getCause() != null) {
+								String msg = throwable.getCause().getMessage();
+								if( msg != null ) {
+									int posBreak = msg.indexOf("\n\t");
+									msg = posBreak > 0? msg.substring(0, posBreak) : msg;
+									msg = HtmlUtils.htmlEncode(msg);
+									msg = msg.replaceAll("\n", "<br/>").replaceAll("\t","&nbsp;&nbsp;&nbsp;&nbsp;");
+									%>
+									<p><b>Message</b>: <%=msg%></p>
+									<%
+								}
+							}%>
+							<p><b>RequestURI</b>: <%=uri%></p>
+							<p><b>Server</b>: <%=Jtp.getDefaultHost()%></p>
+							<%
+
+							if (showStacks) {
+								StringWriter sw = new StringWriter();
+								PrintWriter pw = new PrintWriter(sw);
+								throwable.printStackTrace(pw);
+								pw.flush();
+								%><h3 style="margin-top:1.2em">Caused by:</h3><pre><%=HtmlUtils.htmlEncode(sw.toString())%></pre><%
+							}
+							%>
+						</div>
+						<%
+					} else {
+						%>
+						<h2 style="padding:0;margin:1em 0"><%=message%></h2>
+
+						Please contact <a href="<%=Jtp.supportUrl()%>" target="_new">Nabble Support</a> if you need help.
+						<%
+					}
+					{
+						StringBuffer url = request.getRequestURL();
+						String query = request.getQueryString();
+						if( query != null )
+							url.append( '?' ).append( query );
+						%>
+						<p>URL = <a href="<%=url%>"><%=url%></a></p>
+						<%
+					}
+					%>
+					<table class="footer-table shaded-bg-color">
+						<tr>
+							<td class="footer-left">
+								Powered by <a href="<%=Jtp.homePage()%>" target="_top" title="Free forum and other embeddable web apps">Nabble</a>
+							</td>
+							<td class="footer-right"></td>
+						</tr>
+					</table>
+				</div>
+			</body>
+		</html>
+		<%
+	}
+
+	private void serviceUnavailablePage(Writer writer) {
+		PrintWriter out = new PrintWriter(writer);
+		%>
+		<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+		<html>
+			<head>
+				<title>Service Unavailable</title>
+				<META NAME="robots" CONTENT="noindex,nofollow">
+			</head>
+			<body style="text-align:center;font-family: Verdana,sans-serif;font-size:.84em;padding-top:2em">
+				<img src="https://www.nabble.com/assets/images/logo_nabble_home.png"/>
+				<h1 style="margin-top:1.5em">This Nabble server is over capacity.</h1>
+				<div style="margin:0 15% 2em;text-align:center;background:#eee;padding:1em 0">
+					Too many requests... Please wait a moment and try again.
+				</div>
+
+				Powered by <a href="https://www.nabble.com/">Nabble</a>
+				</div>
+			</body>
+		</html>
+		<%
+	}
+
+	private void databaseUpdatePage(Writer writer) {
+		PrintWriter out = new PrintWriter(writer);
+		%>
+		<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+		<html>
+			<head>
+				<title>Updating Database</title>
+				<META NAME="robots" CONTENT="noindex,nofollow">
+			</head>
+			<body style="text-align:center;font-family: Verdana,sans-serif;font-size:.84em;padding-top:2em">
+				<h1 style="margin-top:3em">Updating Database</h1>
+				<div style="margin:0 25% 2em;text-align:center;background:#eee;padding:1em 0">
+					This database is being updated. Please try again in a few seconds.
+				</div>
+				<h2>Reloading in <span id="sec">60</span> seconds</h2>
+				<script type="text/javascript">
+					var seconds = 60;
+					function countDown() {
+						if (seconds == 0) {
+							window.location.reload();
+							return;
+						}
+						document.getElementById('sec').innerHTML = seconds;
+						seconds--;
+						setTimeout(countDown, 1000);
+					};
+					countDown();
+				</script>
+
+				Powered by <a href="https://www.nabble.com/">Nabble</a>
+				</div>
+			</body>
+		</html>
+		<%
+	}
+}
+%>
author	Franklin Schmidt <fschmidt@gmail.com>
date	Thu, 21 Mar 2019 19:15:52 -0600
parents
children	18cf4872fd7f