org.jgrapes.webconlet.logviewer.LogViewerConlet Maven / Gradle / Ivy
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/*
* JGrapes Event Driven Framework
* Copyright (C) 2016, 2020 Michael N. Lipp
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
* for more details.
*
* You should have received a copy of the GNU Affero General Public License along
* with this program; if not, see {
private static final Set MODES
= RenderMode.asSet(RenderMode.View);
/**
* Creates a new component with its channel set to the given channel.
*
* @param componentChannel the channel that the component's handlers listen
* on by default and that {@link Manager#fire(Event, Channel...)}
* sends the event to
*/
public LogViewerConlet(Channel componentChannel) {
super(componentChannel);
}
/**
* On {@link ConsoleReady}, fire the {@link AddConletType}.
*
* @param event the event
* @param channel the channel
* @throws TemplateNotFoundException the template not found exception
* @throws MalformedTemplateNameException the malformed template name
* exception
* @throws ParseException the parse exception
* @throws IOException Signals that an I/O exception has occurred.
*/
@Handler
public void onConsoleReady(ConsoleReady event, ConsoleConnection channel)
throws TemplateNotFoundException, MalformedTemplateNameException,
ParseException, IOException {
// Add conlet resources to page
channel.respond(new AddConletType(type())
.setDisplayNames(
localizations(channel.supportedLocales(), "conletName"))
.addRenderMode(RenderMode.View)
.addScript(new ScriptResource().setScriptType("module")
.setScriptUri(event.renderSupport().conletResource(
type(), "LogViewer-functions.ftl.js")))
.addCss(event.renderSupport(),
WebConsoleUtils.uriFromPath("LogViewer-style.css")));
}
@Override
protected Set doRenderConlet(RenderConletRequestBase event,
ConsoleConnection channel, String conletId,
Serializable conletState)
throws Exception {
Set renderedAs = new HashSet<>();
if (event.renderAs().contains(RenderMode.View)) {
Template tpl
= freemarkerConfig().getTemplate("LogViewer-view.ftl.html");
channel.respond(new RenderConlet(type(), conletId,
processTemplate(event, tpl,
fmModel(event, channel, conletId, conletState)))
.setRenderAs(
RenderMode.View.addModifiers(event.renderAs()))
.setSupportedModes(MODES));
sendAllEntries(channel, conletId);
renderedAs.add(RenderMode.View);
}
return renderedAs;
}
private void sendAllEntries(ConsoleConnection channel, String conletId) {
channel.respond(new NotifyConletView(type(),
conletId, "entries",
(Object) LogViewerHandler.setConlet(this).stream()
.map(this::logEntryAsMap).toArray()));
}
@SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
/* default */ void addEntry(LogRecord entry) {
for (ConsoleConnection connection : trackedConnections()) {
for (String conletId : conletIds(connection)) {
connection.respond(new NotifyConletView(type(),
conletId, "addEntry", logEntryAsMap(entry))
.disableTracking());
}
}
}
private Map logEntryAsMap(LogRecord record) {
@SuppressWarnings("PMD.UseConcurrentHashMap")
Map result = new HashMap<>();
result.put("exception", Optional.ofNullable(record.getThrown())
.map(Throwable::getMessage).orElse(""));
result.put("stacktrace", Optional.ofNullable(record.getThrown())
.map(exc -> {
ByteArrayOutputStream out = new ByteArrayOutputStream();
PrintWriter printWriter = new PrintWriter(out);
exc.printStackTrace(printWriter);
printWriter.close();
return out.toString();
}).orElse(""));
result.put("loggerName", record.getLoggerName());
result.put("source",
record.getSourceClassName() + "::" + record.getSourceMethodName());
result.put("logLevel", record.getLevel().toString());
result.put("message", record.getMessage());
result.put("time", record.getInstant().toEpochMilli());
result.put("sequence", record.getSequenceNumber());
return result;
}
/*
* (non-Javadoc)
*
* @see org.jgrapes.console.AbstractConlet#doNotifyConletModel
*/
@Override
@SuppressWarnings({ "PMD.SwitchStmtsShouldHaveDefault",
"PMD.TooFewBranchesForASwitchStatement" })
protected void doUpdateConletState(NotifyConletModel event,
ConsoleConnection channel, Serializable conletState)
throws Exception {
event.stop();
switch (event.method()) {
case "resync":
sendAllEntries(channel, event.conletId());
break;
}
}
@Override
protected boolean doSetLocale(SetLocale event, ConsoleConnection channel,
String conletId) throws Exception {
return true;
}
}