@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
StringBuilder sb = new StringBuilder();
try {
Monitor.fetchData();
bannerText =
sanitize(Monitor.getContext().getConfiguration().get(Property.MONITOR_BANNER_TEXT));
bannerColor =
Monitor.getContext()
.getConfiguration()
.get(Property.MONITOR_BANNER_COLOR)
.replace("'", "'");
bannerBackground =
Monitor.getContext()
.getConfiguration()
.get(Property.MONITOR_BANNER_BACKGROUND)
.replace("'", "'");
pageStart(req, resp, sb);
pageBody(req, resp, sb);
pageEnd(req, resp, sb);
} catch (Throwable t) {
log.error("Error building page " + req.getRequestURI(), t);
sb.append("\n<pre>\n");
StringWriter sw = new StringWriter();
t.printStackTrace(new PrintWriter(sw));
sb.append(sanitize(sw.getBuffer().toString()));
sb.append("</pre>\n");
} finally {
resp.getWriter().print(sb);
resp.getWriter().flush();
}
}
public EmbeddedWebServer(String host, int port) {
server = new Server();
handler = new ContextHandlerCollection();
root = new Context(handler, "/", new SessionHandler(), null, null, null);
if (EMPTY.equals(Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_KEYSTORE))
|| EMPTY.equals(Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_KEYSTOREPASS))
|| EMPTY.equals(Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_TRUSTSTORE))
|| EMPTY.equals(
Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_TRUSTSTOREPASS))) {
sock = new SocketConnector();
usingSsl = false;
} else {
sock = new SslSocketConnector();
((SslSocketConnector) sock)
.setKeystore(Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_KEYSTORE));
((SslSocketConnector) sock)
.setKeyPassword(Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_KEYSTOREPASS));
((SslSocketConnector) sock)
.setTruststore(Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_TRUSTSTORE));
((SslSocketConnector) sock)
.setTrustPassword(
Monitor.getSystemConfiguration().get(Property.MONITOR_SSL_TRUSTSTOREPASS));
usingSsl = true;
}
sock.setHost(host);
sock.setPort(port);
}
public static void main(String[] args) throws Exception {
SecurityUtil.serverLogin(ServerConfiguration.getSiteConfiguration());
VolumeManager fs = VolumeManagerImpl.get();
ServerOpts opts = new ServerOpts();
opts.parseArgs("monitor", args);
String hostname = opts.getAddress();
instance = HdfsZooInstance.getInstance();
config = new ServerConfiguration(instance);
Accumulo.init(fs, config, "monitor");
Monitor monitor = new Monitor();
Accumulo.enableTracing(hostname, "monitor");
monitor.run(hostname);
}
protected Scanner getScanner(StringBuilder sb)
throws AccumuloException, AccumuloSecurityException {
AccumuloConfiguration conf = Monitor.getSystemConfiguration();
String principal = conf.get(Property.TRACE_USER);
AuthenticationToken at;
Map<String, String> loginMap =
conf.getAllPropertiesWithPrefix(Property.TRACE_TOKEN_PROPERTY_PREFIX);
if (loginMap.isEmpty()) {
Property p = Property.TRACE_PASSWORD;
at = new PasswordToken(conf.get(p).getBytes(StandardCharsets.UTF_8));
} else {
Properties props = new Properties();
int prefixLength = Property.TRACE_TOKEN_PROPERTY_PREFIX.getKey().length();
for (Entry<String, String> entry : loginMap.entrySet()) {
props.put(entry.getKey().substring(prefixLength), entry.getValue());
}
AuthenticationToken token =
Property.createInstanceFromPropertyName(
conf, Property.TRACE_TOKEN_TYPE, AuthenticationToken.class, new PasswordToken());
token.init(props);
at = token;
}
String table = conf.get(Property.TRACE_TABLE);
try {
Connector conn = HdfsZooInstance.getInstance().getConnector(principal, at);
if (!conn.tableOperations().exists(table)) {
return new NullScanner();
}
Scanner scanner =
conn.createScanner(table, conn.securityOperations().getUserAuthorizations(principal));
return scanner;
} catch (AccumuloSecurityException ex) {
sb.append(
"<h2>Unable to read trace table: check trace username and password configuration.</h2>\n");
return null;
} catch (TableNotFoundException ex) {
return new NullScanner();
}
}
public void run(String hostname) {
try {
getMonitorLock();
} catch (Exception e) {
log.error("Failed to get Monitor ZooKeeper lock");
throw new RuntimeException(e);
}
Monitor.START_TIME = System.currentTimeMillis();
int port = config.getConfiguration().getPort(Property.MONITOR_PORT);
try {
log.debug("Creating monitor on port " + port);
server = new EmbeddedWebServer(hostname, port);
} catch (Throwable ex) {
log.error("Unable to start embedded web server", ex);
throw new RuntimeException(ex);
}
server.addServlet(DefaultServlet.class, "/");
server.addServlet(OperationServlet.class, "/op");
server.addServlet(MasterServlet.class, "/master");
server.addServlet(TablesServlet.class, "/tables");
server.addServlet(TServersServlet.class, "/tservers");
server.addServlet(ProblemServlet.class, "/problems");
server.addServlet(GcStatusServlet.class, "/gc");
server.addServlet(LogServlet.class, "/log");
server.addServlet(XMLServlet.class, "/xml");
server.addServlet(JSONServlet.class, "/json");
server.addServlet(VisServlet.class, "/vis");
server.addServlet(Summary.class, "/trace/summary");
server.addServlet(ListType.class, "/trace/listType");
server.addServlet(ShowTrace.class, "/trace/show");
if (server.isUsingSsl()) server.addServlet(ShellServlet.class, "/shell");
server.start();
try {
hostname = InetAddress.getLocalHost().getHostName();
log.debug("Using " + hostname + " to advertise monitor location in ZooKeeper");
String monitorAddress = HostAndPort.fromParts(hostname, server.getPort()).toString();
ZooReaderWriter.getInstance()
.putPersistentData(
ZooUtil.getRoot(instance) + Constants.ZMONITOR_HTTP_ADDR,
monitorAddress.getBytes(StandardCharsets.UTF_8),
NodeExistsPolicy.OVERWRITE);
log.info("Set monitor address in zookeeper to " + monitorAddress);
} catch (Exception ex) {
log.error("Unable to set monitor HTTP address in zookeeper", ex);
}
if (null != hostname) {
LogService.startLogListener(
Monitor.getSystemConfiguration(), instance.getInstanceID(), hostname);
} else {
log.warn("Not starting log4j listener as we could not determine address to use");
}
new Daemon(new LoggingRunnable(log, new ZooKeeperStatus()), "ZooKeeperStatus").start();
// need to regularly fetch data so plot data is updated
new Daemon(
new LoggingRunnable(
log,
new Runnable() {
@Override
public void run() {
while (true) {
try {
Monitor.fetchData();
} catch (Exception e) {
log.warn(e.getMessage(), e);
}
UtilWaitThread.sleep(333);
}
}
}),
"Data fetcher")
.start();
}
protected void pageStart(HttpServletRequest req, HttpServletResponse resp, StringBuilder sb)
throws Exception {
resp.setContentType(DEFAULT_CONTENT_TYPE);
int refresh = -1;
String refreshStr = getCookieValue(req, "page.refresh.rate");
if (refreshStr != null) {
try {
refresh = Integer.parseInt(BasicServlet.decode(refreshStr));
} catch (NumberFormatException e) {
// ignore improperly formatted user cookie
}
}
// BEGIN PAGE
sb.append("<!--\n");
sb.append(" Licensed to the Apache Software Foundation (ASF) under one or more\n");
sb.append(" contributor license agreements. See the NOTICE file distributed with\n");
sb.append(" this work for additional information regarding copyright ownership.\n");
sb.append(" The ASF licenses this file to You under the Apache License, Version 2.0\n");
sb.append(" (the \"License\"); you may not use this file except in compliance with\n");
sb.append(" the License. You may obtain a copy of the License at\n");
sb.append("\n");
sb.append(" http://www.apache.org/licenses/LICENSE-2.0\n");
sb.append("\n");
sb.append(" Unless required by applicable law or agreed to in writing, software\n");
sb.append(" distributed under the License is distributed on an \"AS IS\" BASIS,\n");
sb.append(" WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n");
sb.append(" See the License for the specific language governing permissions and\n");
sb.append(" limitations under the License.\n");
sb.append("-->\n");
sb.append("<html>\n");
// BEGIN HEADER
sb.append("<head>\n");
sb.append("<title>")
.append(getTitle(req))
.append(" - Accumulo ")
.append(Constants.VERSION)
.append("</title>\n");
if ((refresh > 0)
&& (req.getRequestURI().startsWith("/vis") == false)
&& (req.getRequestURI().startsWith("/shell") == false))
sb.append("<meta http-equiv='refresh' content='" + refresh + "' />\n");
sb.append("<meta http-equiv='Content-Type' content='")
.append(DEFAULT_CONTENT_TYPE)
.append("' />\n");
sb.append("<meta http-equiv='Content-Script-Type' content='text/javascript' />\n");
sb.append("<meta http-equiv='Content-Style-Type' content='text/css' />\n");
sb.append("<link rel='shortcut icon' type='image/jpg' href='/web/favicon.png' />\n");
sb.append("<link rel='stylesheet' type='text/css' href='/web/screen.css' media='screen' />\n");
sb.append("<script src='/web/functions.js' type='text/javascript'></script>\n");
sb.append(
"<!--[if lte IE 8]><script language=\"javascript\" type=\"text/javascript\" src=\"/web/flot/excanvas.min.js\"></script><![endif]-->\n");
sb.append(
"<script language=\"javascript\" type=\"text/javascript\" src=\"/web/flot/jquery.js\"></script>\n");
sb.append(
"<script language=\"javascript\" type=\"text/javascript\" src=\"/web/flot/jquery.flot.js\"></script>\n");
sb.append("</head>\n");
// BEGIN BODY OPENING
sb.append("\n<body ").append(getBodyAttributes()).append(">\n");
sb.append("<div id='content-wrapper'>\n");
sb.append("<div id='content'>\n");
sb.append("<div id='header'>");
if (!bannerText.isEmpty()) {
sb.append("<div id='banner' style='color:")
.append(bannerColor)
.append(";background:")
.append(bannerBackground)
.append("'>")
.append(bannerText)
.append("</div>\n");
}
sb.append("<div id='headertitle'>");
sb.append("<h1>").append(getTitle(req)).append("</h1></div>\n");
sb.append("<div id='subheader'>Instance Name: ")
.append(Monitor.cachedInstanceName.get())
.append(" Version: ")
.append(Constants.VERSION)
.append("\n");
sb.append("<br><span class='smalltext'>Instance ID: ")
.append(Monitor.getContext().getInstance().getInstanceID())
.append("</span>\n");
sb.append("<br><span class='smalltext'>")
.append(new Date().toString().replace(" ", " "))
.append("</span>");
sb.append("</div>\n"); // end <div id='subheader'>
sb.append("</div>\n"); // end <div id='header'>
// BEGIN LEFT SIDE
sb.append("<div id='nav'>\n");
sb.append("<span id='nav-title'><a href='/'>Overview</a></span><br />\n");
sb.append("<hr />\n");
sb.append("<a href='/master'>Master Server</a><br />\n");
sb.append("<a href='/tservers'>Tablet Servers</a><br />\n");
sb.append("<a href='/scans'>Active Scans</a><br />\n");
sb.append("<a href='/bulkImports'>Bulk Imports</a><br />\n");
sb.append("<a href='/vis'>Server Activity</a><br />\n");
sb.append("<a href='/gc'>Garbage Collector</a><br />\n");
sb.append("<a href='/tables'>Tables</a><br />\n");
sb.append("<a href='/trace/summary?minutes=10'>Recent Traces</a><br />\n");
sb.append("<a href='/replication'>Replication</a><br />\n");
List<DedupedLogEvent> dedupedLogEvents = LogService.getInstance().getEvents();
int numLogs = dedupedLogEvents.size();
boolean logsHaveError = false;
for (DedupedLogEvent dedupedLogEvent : dedupedLogEvents)
if (dedupedLogEvent.getEvent().getLevel().isGreaterOrEqual(Level.ERROR)) {
logsHaveError = true;
break;
}
if (numLogs > 0)
sb.append(
"<span class='"
+ (logsHaveError ? "error" : "warning")
+ "'><a href='/log'>Recent Logs <span class='smalltext'>("
+ numLogs
+ ")</a></span></span><br />\n");
int numProblems = Monitor.getProblemSummary().entrySet().size();
if (numProblems > 0)
sb.append(
"<span class='error'><a href='/problems'>Table Problems <span class='smalltext'>("
+ numProblems
+ ")</a></span></span><br />\n");
sb.append("<hr />\n");
sb.append("<a href='/xml'>XML</a><br />\n");
sb.append("<a href='/json'>JSON</a><hr />\n");
if (Monitor.isUsingSsl()) sb.append("<a href='/shell'>Shell</a><hr />\n");
sb.append("<div class='smalltext'>[<a href='")
.append("/op?action=refresh&value=")
.append(refresh < 1 ? "5" : "-1");
sb.append("&redir=").append(currentPage(req)).append("'>");
sb.append(refresh < 1 ? "en" : "dis").append("able auto-refresh</a>]</div>\n");
sb.append("</div>\n"); // end <div id='nav'>
sb.append("<div id='main'");
if (bannerText.isEmpty()) sb.append(" style='bottom:0'");
sb.append(">\n");
sb.append("<!-- BEGIN MAIN BODY CONTENT -->\n\n");
}