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/*
* Copyright 2010-2013 Ning, Inc.
* Copyright 2014-2018 Groupon, Inc
* Copyright 2014-2018 The Billing Project, LLC
*
* The Billing Project licenses this file to you under the Apache License, version 2.0
* (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package org.killbill.billing.osgi;
import java.util.Dictionary;
import java.util.Hashtable;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Observable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.inject.Named;
import javax.servlet.Servlet;
import javax.sql.DataSource;
import org.killbill.billing.catalog.plugin.api.CatalogPluginApi;
import org.killbill.billing.control.plugin.api.PaymentControlPluginApi;
import org.killbill.billing.currency.plugin.api.CurrencyPluginApi;
import org.killbill.billing.entitlement.plugin.api.EntitlementPluginApi;
import org.killbill.billing.invoice.plugin.api.InvoicePluginApi;
import org.killbill.billing.osgi.api.Healthcheck;
import org.killbill.billing.osgi.api.OSGIConfigProperties;
import org.killbill.billing.osgi.api.OSGIKillbill;
import org.killbill.billing.osgi.api.OSGIKillbillRegistrar;
import org.killbill.billing.osgi.api.OSGIPluginProperties;
import org.killbill.billing.osgi.api.OSGIServiceDescriptor;
import org.killbill.billing.osgi.api.OSGIServiceRegistration;
import org.killbill.billing.osgi.glue.DefaultOSGIModule;
import org.killbill.billing.payment.plugin.api.PaymentPluginApi;
import org.killbill.billing.platform.jndi.JNDIManager;
import org.killbill.billing.usage.plugin.api.UsagePluginApi;
import org.killbill.clock.Clock;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceReference;
import org.osgi.service.event.Event;
import org.osgi.service.http.HttpService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.codahale.metrics.MetricRegistry;
import com.google.inject.Inject;
public class KillbillActivator implements BundleActivator, ServiceListener {
static final int PLUGIN_NAME_MAX_LENGTH = 40;
static final Pattern PLUGIN_NAME_PATTERN = Pattern.compile("\\p{Lower}(?:\\p{Lower}|\\d|-|_)*");
private static final Logger logger = LoggerFactory.getLogger(KillbillActivator.class);
private static final String KILLBILL_OSGI_JDBC_JNDI_NAME = "killbill/osgi/jdbc";
private final OSGIKillbill osgiKillbill;
private final HttpService defaultHttpService;
private final DataSource dataSource;
private final Clock clock;
private final KillbillEventRetriableBusHandler killbillEventRetriableBusHandler;
private final KillbillEventObservable observable;
private final OSGIKillbillRegistrar registrar;
private final OSGIConfigProperties configProperties;
private final JNDIManager jndiManager;
private final MetricRegistry metricsRegistry;
private final BundleRegistry bundleRegistry;
private final List allRegistrationHandlers;
private BundleContext context = null;
@Inject
public KillbillActivator(@Named(DefaultOSGIModule.OSGI_DATA_SOURCE_ID) final DataSource dataSource,
final OSGIKillbill osgiKillbill,
final Clock clock,
final BundleRegistry bundleRegistry,
final HttpService defaultHttpService,
final KillbillEventRetriableBusHandler killbillEventRetriableBusHandler,
final KillbillEventObservable observable,
final OSGIConfigProperties configProperties,
final MetricRegistry metricsRegistry,
final JNDIManager jndiManager) {
this.osgiKillbill = osgiKillbill;
this.bundleRegistry = bundleRegistry;
this.defaultHttpService = defaultHttpService;
this.dataSource = dataSource;
this.clock = clock;
this.killbillEventRetriableBusHandler = killbillEventRetriableBusHandler;
this.observable = observable;
this.configProperties = configProperties;
this.jndiManager = jndiManager;
this.metricsRegistry = metricsRegistry;
this.registrar = new OSGIKillbillRegistrar();
this.allRegistrationHandlers = new LinkedList();
}
@Inject(optional = true)
public void addServletOSGIServiceRegistration(final OSGIServiceRegistration servletRouter) {
allRegistrationHandlers.add(servletRouter);
}
@Inject(optional = true)
public void addPaymentPluginApiOSGIServiceRegistration(final OSGIServiceRegistration paymentProviderPluginRegistry) {
allRegistrationHandlers.add(paymentProviderPluginRegistry);
}
@Inject(optional = true)
public void addInvoicePluginApiOSGIServiceRegistration(final OSGIServiceRegistration invoiceProviderPluginRegistry) {
allRegistrationHandlers.add(invoiceProviderPluginRegistry);
}
@Inject(optional = true)
public void addCurrencyPluginApiOSGIServiceRegistration(final OSGIServiceRegistration currencyProviderPluginRegistry) {
allRegistrationHandlers.add(currencyProviderPluginRegistry);
}
@Inject(optional = true)
public void addPaymentControlPluginApiOSGIServiceRegistration(final OSGIServiceRegistration paymentControlProviderPluginRegistry) {
allRegistrationHandlers.add(paymentControlProviderPluginRegistry);
}
@Inject(optional = true)
public void addCatalogPluginApiOSGIServiceRegistration(final OSGIServiceRegistration catalogProviderPluginRegistry) {
allRegistrationHandlers.add(catalogProviderPluginRegistry);
}
@Inject(optional = true)
public void addEntitlementPluginApiOSGIServiceRegistration(final OSGIServiceRegistration entitlementProviderPluginRegistry) {
allRegistrationHandlers.add(entitlementProviderPluginRegistry);
}
@Inject(optional = true)
public void addUsagePluginApiOSGIServiceRegistration(final OSGIServiceRegistration usageProviderPluginRegistry) {
allRegistrationHandlers.add(usageProviderPluginRegistry);
}
@Inject(optional = true)
public void addHealthcheckOSGIServiceRegistration(final OSGIServiceRegistration healthcheckRegistry) {
allRegistrationHandlers.add(healthcheckRegistry);
}
@Override
public void start(final BundleContext context) throws Exception {
this.context = context;
final Dictionary props = new Hashtable();
props.put(OSGIPluginProperties.PLUGIN_NAME_PROP, "killbill");
killbillEventRetriableBusHandler.register();
registrar.registerService(context, OSGIKillbill.class, osgiKillbill, props);
registrar.registerService(context, HttpService.class, defaultHttpService, props);
registrar.registerService(context, Observable.class, observable, props);
registrar.registerService(context, DataSource.class, dataSource, props);
registrar.registerService(context, OSGIConfigProperties.class, configProperties, props);
registrar.registerService(context, Clock.class, clock, props);
context.addServiceListener(this);
jndiManager.export(KILLBILL_OSGI_JDBC_JNDI_NAME, dataSource);
}
@Override
public void stop(final BundleContext context) throws Exception {
jndiManager.unExport(KILLBILL_OSGI_JDBC_JNDI_NAME);
this.context = null;
context.removeServiceListener(this);
killbillEventRetriableBusHandler.unregister();
registrar.unregisterAll();
}
@SuppressWarnings("unchecked")
@Override
public void serviceChanged(final ServiceEvent event) {
if (context == null || (event.getType() != ServiceEvent.REGISTERED && event.getType() != ServiceEvent.UNREGISTERING)) {
// We are not initialized or uninterested
return;
}
final ServiceReference serviceReference = event.getServiceReference();
for (final OSGIServiceRegistration cur : allRegistrationHandlers) {
if (listenForServiceType(serviceReference, event.getType(), cur.getServiceType(), cur)) {
break;
}
}
}
public void sendEvent(final String topic, final Map properties) {
observable.setChangedAndNotifyObservers(new Event(topic, properties));
}
public List getAllRegistrationHandlers() {
return allRegistrationHandlers;
}
private boolean listenForServiceType(final ServiceReference serviceReference, final int eventType, final Class claz, final OSGIServiceRegistration registration) {
// Make sure we can retrieve the plugin name
final String serviceName = (String) serviceReference.getProperty(OSGIPluginProperties.PLUGIN_NAME_PROP);
if (serviceName == null || !checkSanityPluginRegistrationName(serviceName)) {
// Quite common for non Killbill bundles
logger.debug("Ignoring registered OSGI service {} with no {} property", claz.getName(), OSGIPluginProperties.PLUGIN_NAME_PROP);
return true;
}
final Object theServiceObject = context.getService(serviceReference);
// Is that for us? We look for a subclass here for greater flexibility (e.g. HttpServlet for a Servlet service)
if (theServiceObject == null || !claz.isAssignableFrom(theServiceObject.getClass())) {
return false;
}
@SuppressWarnings("unchecked") final T theService = (T) theServiceObject;
final OSGIServiceDescriptor desc = new DefaultOSGIServiceDescriptor(serviceReference.getBundle().getSymbolicName(),
bundleRegistry.getPluginName(serviceReference.getBundle()),
serviceName);
switch (eventType) {
case ServiceEvent.REGISTERED:
final T wrappedService = ContextClassLoaderHelper.getWrappedServiceWithCorrectContextClassLoader(theService, registration.getServiceType(), serviceName, metricsRegistry);
registration.registerService(desc, wrappedService);
bundleRegistry.registerService(desc, registration.getServiceType().getName());
break;
case ServiceEvent.UNREGISTERING:
registration.unregisterService(desc.getRegistrationName());
bundleRegistry.unregisterService(desc, registration.getServiceType().getName());
break;
default:
break;
}
return true;
}
private boolean checkSanityPluginRegistrationName(final String pluginName) {
final Matcher m = PLUGIN_NAME_PATTERN.matcher(pluginName);
if (!m.matches()) {
logger.warn("Invalid plugin name {} : should be of the form {}", pluginName, PLUGIN_NAME_PATTERN.toString());
return false;
}
if (pluginName.length() > PLUGIN_NAME_MAX_LENGTH) {
logger.warn("Invalid plugin name {} : too long, should be less than {}", pluginName, PLUGIN_NAME_MAX_LENGTH);
return false;
}
return true;
}
}
