public static synchronized void err(Throwable e) {
String s = prefix() + e.toString();
err.println(s);
ui.output.append(s + "\n");
for (StackTraceElement ste : e.getStackTrace()) {
String s1 = "\t" + ste.toString();
err.println(s1);
ui.output.append(s1 + "\n");
}
ui.output.setCaretPosition(ui.output.getDocument().getLength());
err.flush();
}
protected static String printException(Throwable ex) throws IOException {
if (ex == null) return null;
StackTraceElement[] stack_trace = ex.getStackTrace();
StringBuilder sb = new StringBuilder();
sb.append("\n<" + CDATA + "\n");
sb.append(ex.getClass().getName() + " \n");
for (int i = 0; i < stack_trace.length; i++) {
StackTraceElement frame = stack_trace[i];
sb.append("at " + frame.toString() + " \n");
}
sb.append("\n]]>");
return sb.toString();
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
try {
response.setHeader("Cache-Control", "no-cache");
response.setCharacterEncoding("UTF-8");
String task = request.getParameter("task");
Element data = null;
// process help request
if (request.getParameter("help") != null) data = getDescription(task);
// redirect to home page if there is no task
if (data == null && task == null) {
response.setContentType("text/html");
response
.getWriter()
.append(
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\"><html><head><meta http-equiv=\"REFRESH\" content=\"0;url="
+ context.getInitParameter("server_path")
+ "></head><body></body></html>");
return;
}
// process definition request
if (data == null && task.equals("define")) {
int id = resolveIntegerArg(request.getParameter("id"), -1);
int length = resolveIntegerArg(request.getParameter("length"), definer.getDefaultLength());
int format = resolveIntegerArg(request.getParameter("format"), definer.getDefaultFormat());
int maxImageWidth =
resolveIntegerArg(
request.getParameter("maxImageWidth"), definer.getDefaultMaxImageWidth());
int maxImageHeight =
resolveIntegerArg(
request.getParameter("maxImageHeight"), definer.getDefaultMaxImageHeight());
int linkDestination =
resolveIntegerArg(
request.getParameter("linkDestination"), definer.getDefaultLinkDestination());
boolean getImages = resolveBooleanArg(request.getParameter("getImages"), false);
data =
definer.getDefinition(
id, length, format, linkDestination, getImages, maxImageWidth, maxImageHeight);
}
// all of the remaining tasks require data to be cached, so lets make sure that is finished
// before continuing.
if (!cachingThread.isOk()) throw new ServletException("Could not cache wikipedia data");
double progress = cachingThread.getProgress();
if (data == null && (progress < 1 || task.equals("progress"))) {
// still caching up data, not ready to return a response yet.
data = doc.createElement("loading");
data.setAttribute("progress", df.format(progress));
task = "loading";
}
// process search request
if (data == null && task.equals("search")) {
String term = request.getParameter("term");
String id = request.getParameter("id");
int linkLimit =
resolveIntegerArg(request.getParameter("linkLimit"), searcher.getDefaultMaxLinkCount());
int senseLimit =
resolveIntegerArg(
request.getParameter("senseLimit"), searcher.getDefaultMaxSenseCount());
if (id == null) data = searcher.doSearch(term, linkLimit, senseLimit);
else data = searcher.doSearch(Integer.parseInt(id), linkLimit);
}
// process compare request
if (data == null && task.equals("compare")) {
String term1 = request.getParameter("term1");
String term2 = request.getParameter("term2");
int linkLimit =
resolveIntegerArg(request.getParameter("linkLimit"), comparer.getDefaultMaxLinkCount());
boolean details =
resolveBooleanArg(request.getParameter("details"), comparer.getDefaultShowDetails());
data = comparer.getRelatedness(term1, term2, details, linkLimit);
}
// process wikify request
if (data == null && task.equals("wikify")) {
if (this.wikifier == null)
throw new ServletException(
"Wikifier is not available. You must configure the servlet so that it has access to link detection and disambiguation models.");
String source = request.getParameter("source");
int sourceMode =
resolveIntegerArg(request.getParameter("sourceMode"), Wikifier.SOURCE_AUTODETECT);
String linkColor = request.getParameter("linkColor");
String baseColor = request.getParameter("baseColor");
double minProb =
resolveDoubleArg(
request.getParameter("minProbability"), wikifier.getDefaultMinProbability());
int repeatMode =
resolveIntegerArg(request.getParameter("repeatMode"), wikifier.getDefaultRepeatMode());
boolean showTooltips =
resolveBooleanArg(
request.getParameter("showTooltips"), wikifier.getDefaultShowTooltips());
String bannedTopics = request.getParameter("bannedTopics");
boolean wrapInXml = resolveBooleanArg(request.getParameter("wrapInXml"), true);
if (wrapInXml) {
data =
wikifier.wikifyAndWrapInXML(
source,
sourceMode,
minProb,
repeatMode,
bannedTopics,
baseColor,
linkColor,
showTooltips);
} else {
response.setContentType("text/html");
response
.getWriter()
.append(
wikifier.wikify(
source,
sourceMode,
minProb,
repeatMode,
bannedTopics,
baseColor,
linkColor,
showTooltips));
return;
}
}
if (data == null) throw new Exception("Unknown Task");
// wrap data
Element wrapper = doc.createElement("WikipediaMinerResponse");
wrapper.setAttribute("server_path", context.getInitParameter("server_path"));
wrapper.setAttribute("service_name", context.getInitParameter("service_name"));
wrapper.appendChild(data);
data = wrapper;
// Transform or serialize xml data as appropriate
Transformer tf = null;
if (request.getParameter("xml") == null) {
// we need to transform the data into html
tf = transformersByName.get(task);
if (request.getParameter("help") != null) tf = transformersByName.get("help");
}
if (tf == null) {
// we need to serialize the data as xml
tf = transformersByName.get("serializer");
response.setContentType("application/xml");
} else {
// output will be transformed to html
response.setContentType("text/html");
response
.getWriter()
.append(
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n");
}
tf.transform(new DOMSource(data), new StreamResult(response.getWriter()));
} catch (Exception error) {
response.reset();
response.setContentType("application/xml");
response.setHeader("Cache-Control", "no-cache");
response.setCharacterEncoding("UTF8");
Element xmlError = doc.createElement("Error");
if (error.getMessage() != null) xmlError.setAttribute("message", error.getMessage());
Element xmlStackTrace = doc.createElement("StackTrace");
xmlError.appendChild(xmlStackTrace);
for (StackTraceElement ste : error.getStackTrace()) {
Element xmlSte = doc.createElement("StackTraceElement");
xmlSte.setAttribute("message", ste.toString());
xmlStackTrace.appendChild(xmlSte);
}
try {
transformersByName
.get("serializer")
.transform(new DOMSource(xmlError), new StreamResult(response.getWriter()));
} catch (Exception e) {
// TODO: something for when an error is thrown processing an error????
}
;
}
}
public Writer getErrorReport(
Writer to, final HttpServletRequest request, CharTransformer escape) throws IOException {
final Writer logMsg = new StringWriter();
final Writer tee = new org.mmbase.util.ChainedWriter(to, logMsg);
Writer msg = tee;
LinkedList<Throwable> stack = getStack();
String ticket = new Date().toString();
Map<String, String> props;
try {
props = org.mmbase.util.ApplicationContextReader.getProperties("mmbase_errorpage");
} catch (javax.naming.NamingException ne) {
props = Collections.emptyMap();
log.info(ne);
}
if (request != null) {
{
msg.append("Headers\n----------\n");
// request properties
for (Object name : Collections.list(request.getHeaderNames())) {
msg.append(
escape.transform(
name + ": " + escape.transform(request.getHeader((String) name)) + "\n"));
}
}
{
msg.append("\nAttributes\n----------\n");
Pattern p = requestIgnore;
if (p == null && props.get("request_ignore") != null) {
p = Pattern.compile(props.get("request_ignore"));
}
for (Object name : Collections.list(request.getAttributeNames())) {
if (p == null || !p.matcher((String) name).matches()) {
msg.append(
escape.transform(name + ": " + request.getAttribute((String) name) + "\n"));
}
}
}
if (Boolean.TRUE.equals(showSession)
|| (showSession == null && !"false".equals(props.get("show_session")))) {
HttpSession ses = request.getSession(false);
if (ses != null) {
msg.append("\nSession\n----------\n");
Pattern p = sessionIgnore;
if (p == null && props.get("session_ignore") != null) {
p = Pattern.compile(props.get("session_ignore"));
}
for (Object name : Collections.list(ses.getAttributeNames())) {
if (p == null || !p.matcher((String) name).matches()) {
msg.append(escape.transform(name + ": " + ses.getAttribute((String) name) + "\n"));
}
}
}
}
}
msg.append("\n");
msg.append("Misc. properties\n----------\n");
if (request != null) {
msg.append("method: ").append(escape.transform(request.getMethod())).append("\n");
msg.append("querystring: ").append(escape.transform(request.getQueryString())).append("\n");
msg.append("requesturl: ")
.append(escape.transform(request.getRequestURL().toString()))
.append("\n");
}
if (Boolean.TRUE.equals(showMMBaseVersion)
|| (showMMBaseVersion == null && !"false".equals(props.get("show_mmbase_version")))) {
msg.append("mmbase version: ").append(org.mmbase.Version.get()).append("\n");
}
msg.append("status: ").append("").append(String.valueOf(status)).append("\n\n");
if (request != null) {
msg.append("Parameters\n----------\n");
// request parameters
Enumeration en = request.getParameterNames();
while (en.hasMoreElements()) {
String name = (String) en.nextElement();
msg.append(name)
.append(": ")
.append(escape.transform(request.getParameter(name)))
.append("\n");
}
}
msg.append("\nException ")
.append(ticket)
.append("\n----------\n\n")
.append(
exception != null
? (escape.transform(exception.getClass().getName()))
: "NO EXCEPTION")
.append(": ");
int wroteCauses = 0;
while (!stack.isEmpty()) {
Throwable t = stack.removeFirst();
// add stack stacktraces
if (t != null) {
if (stack.isEmpty()) { // write last message always
msg = tee;
}
String message = t.getMessage();
if (msg != tee) {
to.append("\n=== skipped(see log) : ")
.append(escape.transform(t.getClass().getName()))
.append(": ")
.append(message)
.append("\n");
}
msg.append("\n\n").append(escape.transform(t.getClass().getName() + ": " + message));
StackTraceElement[] stackTrace = t.getStackTrace();
for (StackTraceElement e : stackTrace) {
msg.append("\n at ").append(escape.transform(e.toString()));
}
if (!stack.isEmpty()) {
msg.append("\n-------caused:\n");
}
wroteCauses++;
if (wroteCauses >= MAX_CAUSES) {
msg = logMsg;
}
}
}
// write errors to log
if (status == 500) {
try {
if (props.get("to") != null && props.get("to").length() > 0) {
javax.naming.Context initCtx = new javax.naming.InitialContext();
javax.naming.Context envCtx = (javax.naming.Context) initCtx.lookup("java:comp/env");
Object mailSession = envCtx.lookup("mail/Session");
Class sessionClass = Class.forName("javax.mail.Session");
Class recipientTypeClass = Class.forName("javax.mail.Message$RecipientType");
Class messageClass = Class.forName("javax.mail.internet.MimeMessage");
Object mail = messageClass.getConstructor(sessionClass).newInstance(mailSession);
messageClass
.getMethod("addRecipients", recipientTypeClass, String.class)
.invoke(mail, recipientTypeClass.getDeclaredField("TO").get(null), props.get("to"));
messageClass.getMethod("setSubject", String.class).invoke(mail, ticket);
mail.getClass().getMethod("setText", String.class).invoke(mail, logMsg.toString());
Class.forName("javax.mail.Transport")
.getMethod("send", Class.forName("javax.mail.Message"))
.invoke(null, mail);
tee.append("\nmailed to (").append(String.valueOf(props)).append(")");
}
} catch (Exception nnfe) {
tee.append("\nnot mailed (").append(String.valueOf(nnfe)).append(")");
if (log.isDebugEnabled()) {
log.debug(nnfe.getMessage(), nnfe);
}
}
log.error("TICKET " + ticket + ":\n" + logMsg);
}
return to;
}
private void printThread() {
long now = System.currentTimeMillis();
long diffLastThreadDump = now - lastThreadDump;
logger.info("diffLastThreadDump:" + diffLastThreadDump);
if (diffLastThreadDump > 60000) {
logger.info("had not sent all threads for a while.. will do so now");
lastThreadDump = now;
try {
ThreadMXBean t = ManagementFactory.getThreadMXBean();
long threads[] = t.getAllThreadIds();
ThreadInfo[] tinfo = t.getThreadInfo(threads, 40);
StringBuilder sb = new StringBuilder("All Threads");
for (int i = 0; i < tinfo.length; i++) {
ThreadInfo e = tinfo[i];
try {
StackTraceElement[] el = e.getStackTrace();
sb.append(
"\n\n"
+ e.getThreadName()
+ "\n"
+ " "
+ " Thread id = "
+ e.getThreadId()
+ " "
+ e.getThreadState());
if (e.getThreadState().equals(State.BLOCKED)) {
sb.append(
"\n\nBlocked info: "
+ e.getBlockedCount()
+ ":"
+ e.getBlockedTime()
+ ":"
+ e.getLockName()
+ ":"
+ e.getLockOwnerId()
+ ":"
+ e.getLockOwnerName()
+ "\n"
+ " "
+ " Thread id = "
+ e.getThreadId()
+ " "
+ e.getThreadState());
ThreadInfo eBlockedThread = t.getThreadInfo(e.getLockOwnerId(), 40);
StackTraceElement[] elBlockedThread = eBlockedThread.getStackTrace();
sb.append(
"\n\n "
+ e.getThreadName()
+ "\n"
+ " "
+ " Thread id = "
+ eBlockedThread.getThreadId()
+ " "
+ eBlockedThread.getThreadState());
if (elBlockedThread == null || elBlockedThread.length == 0) {
sb.append(" no stack trace available");
} else {
for (int n = 0; n < elBlockedThread.length; n++) {
if (n != 0) sb.append("\n");
StackTraceElement frame = elBlockedThread[n];
if (frame == null) {
sb.append(" null stack frame");
continue;
}
sb.append(" ");
sb.append(frame.toString());
}
}
}
if (el == null || el.length == 0) {
sb.append(" no stack trace available");
continue;
}
for (int n = 0; n < el.length; n++) {
if (n != 0) sb.append("\n");
StackTraceElement frame = el[n];
if (frame == null) {
sb.append(" null stack frame");
continue;
}
sb.append(" ");
sb.append(frame.toString());
}
} catch (Exception e2) {
}
}
String warningEmailReceiver = CmsPropertyHandler.getWarningEmailReceiver();
if (warningEmailReceiver != null
&& !warningEmailReceiver.equals("")
&& warningEmailReceiver.indexOf("@warningEmailReceiver@") == -1) {
try {
logger.info("Mailing..");
MailServiceFactory.getService()
.sendEmail(
CmsPropertyHandler.getMailContentType(),
warningEmailReceiver,
warningEmailReceiver,
null,
null,
null,
null,
message,
sb.toString().replaceAll("\n", "<br/>"),
"utf-8");
} catch (Exception e) {
logger.error("Could not send mail:" + e.getMessage(), e);
}
}
} catch (Throwable e) {
logger.error("Error generating message:" + e.getMessage(), e);
}
}
// Only sends if the last stack was sent more than 3 seconds ago.
if ((now - lastSentTimer) > 10000) {
lastSentTimer = System.currentTimeMillis();
StackTraceElement[] el = targetThread.getStackTrace();
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
long stopTimeInNs = threadMXBean.getThreadUserTime(targetThread.getId());
long diff = (stopTimeInNs - startTimeInNs) / 1000000000;
StringBuffer stackString = new StringBuffer("\n\n" + message + "\n\n");
stackString.append("ServerName: " + getServerName() + "\n");
stackString.append("Maximum memory (MB): " + (maxMemory / 1024 / 1024) + "\n");
stackString.append("Used memory (MB): " + ((totalMemory - freeMemory) / 1024 / 1024) + "\n");
stackString.append("Free memory (MB): " + (freeMemory / 1024 / 1024) + "\n");
stackString.append("Total memory (MB): " + (totalMemory / 1024 / 1024) + "\n");
stackString.append("Number of current requests: " + numberOfCurrentRequests + "\n");
stackString.append("Number of active requests: " + numberOfActiveRequests + "\n");
stackString.append("Number of long requests: " + longThreadMonitorsSize + "\n");
stackString.append("Current thread time: " + diff + " seconds\n");
stackString.append(
"Average time: " + RequestAnalyser.getRequestAnalyser().getAverageElapsedTime() + "\n");
stackString.append(
"Longest time: " + RequestAnalyser.getRequestAnalyser().getMaxElapsedTime() + "\n");
stackString.append("Original url: " + getOriginalFullURL() + "\n");
stackString.append("UserInfo: " + getUserInfo() + "\n");
stackString.append("--------------------------------------------\n\n");
stackString.append("Thread with id [" + targetThread.getId() + "] at report time:\n");
if (el != null && el.length != 0) {
for (int j = 0; j < el.length; j++) {
StackTraceElement frame = el[j];
if (frame == null) stackString.append(" null stack frame" + "\n");
else stackString.append(" ").append(frame.toString()).append("\n");
// if((stackString.indexOf("infoglue") > -1 && j > 20) || j > 35)
// break;
}
}
if (targetThread.getState().equals(State.BLOCKED)) {
ThreadMXBean t = ManagementFactory.getThreadMXBean();
ThreadInfo e = t.getThreadInfo(targetThread.getId(), 40);
stackString.append(
"\n\nBlocked info: "
+ e.getBlockedCount()
+ ":"
+ e.getBlockedTime()
+ ":"
+ e.getLockName()
+ ":"
+ e.getLockOwnerId()
+ ":"
+ e.getLockOwnerName()
+ "\n"
+ " "
+ " Thread id = "
+ e.getThreadId()
+ " "
+ e.getThreadState());
ThreadInfo eBlockedThread = t.getThreadInfo(e.getLockOwnerId(), 40);
StackTraceElement[] elBlockedThread = eBlockedThread.getStackTrace();
stackString.append(
"\n\nBlocked thread: "
+ e.getThreadName()
+ "\n"
+ " "
+ " Thread id = "
+ eBlockedThread.getThreadId()
+ " "
+ eBlockedThread.getThreadState());
if (elBlockedThread == null || elBlockedThread.length == 0) {
stackString.append(" no stack trace available");
} else {
for (int n = 0; n < elBlockedThread.length; n++) {
if (n != 0) stackString.append("\n");
StackTraceElement frame = elBlockedThread[n];
if (frame == null) {
stackString.append(" null stack frame");
continue;
}
stackString.append(" ");
stackString.append(frame.toString());
}
}
}
stackString.append(
"\n\n**********************************\nConcurrent long threads (Only an excerpt of all)\n**********************************");
ThreadMXBean t = ManagementFactory.getThreadMXBean();
List threadMonitors = RequestAnalyser.getLongThreadMonitors();
Iterator threadMonitorsIterator = threadMonitors.iterator();
int threadCount = 0;
while (threadMonitorsIterator.hasNext() && threadCount < 5) {
SimpleThreadMonitor tm = (SimpleThreadMonitor) threadMonitorsIterator.next();
if (targetThread.getId() == tm.getThreadId()) continue;
long threads[] = {tm.getThreadId()};
ThreadInfo[] tinfo = t.getThreadInfo(threads, 40);
stackString
.append("\n\n---------------------------------\nConcurrent long thread [")
.append(tm.getThreadId())
.append("]:\n");
stackString
.append("Elapsed time:")
.append(tm.getElapsedTime())
.append("\n Thread id: ")
.append(tm.getThreadId())
.append("\n Original url: ")
.append(tm.getOriginalFullURL())
.append(")");
for (int i = 0; i < tinfo.length; i++) {
ThreadInfo e = tinfo[i];
el = e.getStackTrace();
if (el != null && el.length != 0) {
for (int n = 0; n < el.length; n++) {
StackTraceElement frame = el[n];
if (frame == null) stackString.append(" null stack frame\n");
else stackString.append(" null stack frame").append(frame.toString()).append("\n");
}
}
}
threadCount++;
}
logger.warn(stackString);
} else {
logger.warn(
"A thread took to long but the system seems to be really clogged so we don't send this one.");
}
}
