Mercurial > hg > release > thermostat-0.5
view common/core/src/main/java/com/redhat/thermostat/test/StubBundleContext.java @ 908:1e51015e63e5
Allow plugins to dynamically contribute output to vm-stat command
This commit follows the previous commits that created agent and common
bundles for the plugins we include with Thermostat. Currently the
vm-stat command uses output from the VmCpuStatDAO and VmMemoryStatDAO,
which are now contained in plugins. In order to not have core Thermostat
rely on the presence of plugins, this commit introduces a
VMStatPrintDelegate interface which plugins can implement to
dynamically provide output to the vm-stat command. The end result is the
same vm-stat output as before, but without dependencies on the
vm-cpu-common and vm-memory-common bundles. In addition, other plugins
can contribute columns of data to the command as well.
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-January/005031.html
author | Elliott Baron <ebaron@redhat.com> |
---|---|
date | Wed, 09 Jan 2013 14:59:30 -0500 |
parents | 5dd795c70b71 |
children | 421d8a954893 |
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/* * Copyright 2013 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.test; import java.io.File; import java.io.InputStream; import java.util.ArrayList; import java.util.Collection; import java.util.Dictionary; import java.util.Iterator; import java.util.List; import org.osgi.framework.Bundle; import org.osgi.framework.BundleContext; import org.osgi.framework.BundleException; import org.osgi.framework.BundleListener; import org.osgi.framework.Filter; import org.osgi.framework.FrameworkListener; import org.osgi.framework.InvalidSyntaxException; import org.osgi.framework.ServiceListener; import org.osgi.framework.ServiceReference; import org.osgi.framework.ServiceRegistration; import com.redhat.thermostat.common.NotImplementedException; import com.redhat.thermostat.test.StubBundleContext.ServiceInformation; public class StubBundleContext implements BundleContext { static class ServiceInformation { public String serviceInterface; public Object implementation; public Dictionary properties; public int exportedReferences; public ServiceInformation(String className, Object impl, Dictionary props) { this.serviceInterface = className; this.implementation = impl; this.properties = props; } } static class ListenerSpec { public ServiceListener listener; public Filter filter; public ListenerSpec(ServiceListener listener, Filter filter) { this.listener = listener; this.filter = filter; } } private List<Bundle> bundles = new ArrayList<>(); private List<ServiceInformation> registeredServices = new ArrayList<>(); private List<ListenerSpec> registeredListeners = new ArrayList<>(); /* * Interface methods */ @Override public String getProperty(String key) { throw new NotImplementedException(); } @Override public Bundle getBundle() { throw new NotImplementedException(); } @Override public Bundle installBundle(String location, InputStream input) throws BundleException { throw new NotImplementedException(); } @Override public Bundle installBundle(String location) throws BundleException { throw new NotImplementedException(); } @Override public Bundle getBundle(long id) { if (id > Integer.MAX_VALUE) { throw new NotImplementedException(); } return bundles.get((int) id); } @Override public Bundle[] getBundles() { throw new NotImplementedException(); } @Override public void addServiceListener(ServiceListener listener, String filter) throws InvalidSyntaxException { ListenerSpec spec = new ListenerSpec(listener, createFilter(filter)); registeredListeners.add(spec); } @Override public void addServiceListener(ServiceListener listener) { throw new NotImplementedException(); } @Override public void removeServiceListener(ServiceListener listener) { Iterator<ListenerSpec> iter = registeredListeners.iterator(); while (iter.hasNext()) { ListenerSpec item = iter.next(); if (item.listener == listener) { iter.remove(); } } } @Override public void addBundleListener(BundleListener listener) { throw new NotImplementedException(); } @Override public void removeBundleListener(BundleListener listener) { throw new NotImplementedException(); } @Override public void addFrameworkListener(FrameworkListener listener) { throw new NotImplementedException(); } @Override public void removeFrameworkListener(FrameworkListener listener) { throw new NotImplementedException(); } @Override public ServiceRegistration registerService(Class clazz, Object service, Dictionary properties) { return registerService(clazz.getName(), service, properties); } @Override public ServiceRegistration registerService(String[] clazzes, Object service, Dictionary properties) { throw new NotImplementedException(); } @Override public ServiceRegistration registerService(String className, Object service, Dictionary properties) { ServiceInformation info = new ServiceInformation(className, service, properties); registeredServices.add(info); return new StubServiceRegistration(this, info); } @Override public ServiceReference[] getServiceReferences(String clazz, String filter) throws InvalidSyntaxException { Filter toMatch = createFilter(filter); List<ServiceReference> toReturn = new ArrayList<>(); for (ServiceInformation info : registeredServices) { // how does filter matching in OSGI work again? if (info.serviceInterface.equals(clazz) && toMatch.match(info.properties)) { toReturn.add(new StubServiceReference(info)); } } return toReturn.toArray(new ServiceReference[0]); } @Override public ServiceReference[] getAllServiceReferences(String clazz, String filter) throws InvalidSyntaxException { throw new NotImplementedException(); } @Override public ServiceReference getServiceReference(String clazz) { ServiceReference result = null; for (ServiceInformation info : registeredServices) { if (info.serviceInterface.equals(clazz)) { result = new StubServiceReference(info); } } return result; } @Override public ServiceReference getServiceReference(Class clazz) { for (ServiceInformation info : registeredServices) { if (info.serviceInterface.equals(clazz.getName())) { return new StubServiceReference(info); } } return null; } @Override public Collection getServiceReferences(Class clazz, String filter) throws InvalidSyntaxException { throw new NotImplementedException(); } @Override public Object getService(ServiceReference reference) { StubServiceReference ref = (StubServiceReference) reference; ServiceInformation info = ref.getInformation(); info.exportedReferences++; return info.implementation; } @Override public boolean ungetService(ServiceReference reference) { StubServiceReference ref = (StubServiceReference) reference; ServiceInformation info = ref.getInformation(); if (info.exportedReferences == 0) { return false; } info.exportedReferences--; return true; } @Override public File getDataFile(String filename) { throw new NotImplementedException(); } @Override public Filter createFilter(String filter) throws InvalidSyntaxException { return new StubFilter(filter); } @Override public Bundle getBundle(String location) { throw new NotImplementedException(); } /* * Our custom methods */ public void setBundle(int i, Bundle bundle) { bundles.add(i, bundle); } public boolean isServiceRegistered(String serviceName, Class<?> implementationClass) { for (ServiceInformation info : registeredServices) { if (info.serviceInterface.equals(serviceName) && info.implementation.getClass().equals(implementationClass)) { return true; } } return false; } public Collection<ServiceInformation> getAllServices() { return registeredServices; } public Collection<ListenerSpec> getServiceListeners() { return registeredListeners; } public void removeService(ServiceInformation info) { if (!registeredServices.contains(info)) { throw new IllegalStateException("service not registered"); } registeredServices.remove(info); } public int getExportedServiceCount(ServiceRegistration registration) { StubServiceRegistration reg = (StubServiceRegistration) registration; return reg.getInfo().exportedReferences; } }