public MyApplication() {
super();
// Optionally remove existing handlers attached to j.u.l root logger
SLF4JBridgeHandler.removeHandlersForRootLogger();
// add SLF4JBridgeHandler to j.u.l's root logger, should be done once during
// the initialization phase of your application
SLF4JBridgeHandler.install();
packages("provider", "rest");
register(new LoggingFilter(log, true));
}
@Override
public void start() throws Exception {
SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();
Database database = new Database(new AppConfiguration("events.properties"));
Flyway flyway = new Flyway();
flyway.setDataSource(database.getDataSource());
flyway.migrate();
addHandler(shutdownHandler());
addHandler(createWebAppContext("/events"));
addHandler(createRedirectContextHandler("/", "/events"));
super.start();
}
@BeforeClass
public static void staticSetup() {
SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();
}
public NiFi(final NiFiProperties properties)
throws ClassNotFoundException, IOException, NoSuchMethodException, InstantiationException,
IllegalAccessException, IllegalArgumentException, InvocationTargetException {
Thread.setDefaultUncaughtExceptionHandler(
new UncaughtExceptionHandler() {
@Override
public void uncaughtException(final Thread t, final Throwable e) {
logger.error("An Unknown Error Occurred in Thread {}: {}", t, e.toString());
logger.error("", e);
}
});
// register the shutdown hook
Runtime.getRuntime()
.addShutdownHook(
new Thread(
new Runnable() {
@Override
public void run() {
// shutdown the jetty server
shutdownHook();
}
}));
final String bootstrapPort = System.getProperty(BOOTSTRAP_PORT_PROPERTY);
if (bootstrapPort != null) {
try {
final int port = Integer.parseInt(bootstrapPort);
if (port < 1 || port > 65535) {
throw new RuntimeException(
"Failed to start NiFi because system property '"
+ BOOTSTRAP_PORT_PROPERTY
+ "' is not a valid integer in the range 1 - 65535");
}
bootstrapListener = new BootstrapListener(this, port);
bootstrapListener.start();
} catch (final NumberFormatException nfe) {
throw new RuntimeException(
"Failed to start NiFi because system property '"
+ BOOTSTRAP_PORT_PROPERTY
+ "' is not a valid integer in the range 1 - 65535");
}
} else {
logger.info(
"NiFi started without Bootstrap Port information provided; will not listen for requests from Bootstrap");
bootstrapListener = null;
}
// delete the web working dir - if the application does not start successfully
// the web app directories might be in an invalid state. when this happens
// jetty will not attempt to re-extract the war into the directory. by removing
// the working directory, we can be assured that it will attempt to extract the
// war every time the application starts.
File webWorkingDir = properties.getWebWorkingDirectory();
FileUtils.deleteFilesInDirectory(webWorkingDir, null, logger, true, true);
FileUtils.deleteFile(webWorkingDir, logger, 3);
detectTimingIssues();
// redirect JUL log events
SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();
// expand the nars
final ExtensionMapping extensionMapping = NarUnpacker.unpackNars(properties);
// load the extensions classloaders
NarClassLoaders.getInstance()
.init(
properties.getFrameworkWorkingDirectory(), properties.getExtensionsWorkingDirectory());
// load the framework classloader
final ClassLoader frameworkClassLoader =
NarClassLoaders.getInstance().getFrameworkClassLoader();
if (frameworkClassLoader == null) {
throw new IllegalStateException("Unable to find the framework NAR ClassLoader.");
}
// discover the extensions
ExtensionManager.discoverExtensions(NarClassLoaders.getInstance().getExtensionClassLoaders());
ExtensionManager.logClassLoaderMapping();
DocGenerator.generate(properties);
// load the server from the framework classloader
Thread.currentThread().setContextClassLoader(frameworkClassLoader);
Class<?> jettyServer =
Class.forName("org.apache.nifi.web.server.JettyServer", true, frameworkClassLoader);
Constructor<?> jettyConstructor = jettyServer.getConstructor(NiFiProperties.class);
final long startTime = System.nanoTime();
nifiServer = (NiFiServer) jettyConstructor.newInstance(properties);
nifiServer.setExtensionMapping(extensionMapping);
if (shutdown) {
logger.info("NiFi has been shutdown via NiFi Bootstrap. Will not start Controller");
} else {
nifiServer.start();
if (bootstrapListener != null) {
bootstrapListener.sendStartedStatus(true);
}
final long endTime = System.nanoTime();
logger.info("Controller initialization took " + (endTime - startTime) + " nanoseconds.");
}
}
static {
SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();
}
/** Initialize the logging subsystem and necessary logging bridges */
public static void initialize() {
SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();
logger.info("JUL to SLF4J bridge initialized");
}