Mercurial > hg > release > thermostat-0.5
view common/core/src/main/java/com/redhat/thermostat/common/dao/DAOFactoryImpl.java @ 895:ceb28ef8f9e8
Create VM GC agent and common bundles
This commit extracts VM GC data collection from SystemBackend and related
classes to a vm-gc-agent bundle. It also moves the VmGcStatDAO from
common-core to a vm-gc-common bundle that registers the DAO once Storage
is available. This also removes the DAO from DAOFactory.
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-January/004997.html
author | Elliott Baron <ebaron@redhat.com> |
---|---|
date | Mon, 07 Jan 2013 15:50:59 -0500 |
parents | 0ba74f790a8a |
children | 3cc2f2ea31b3 |
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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.common.dao; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.osgi.framework.BundleContext; import org.osgi.framework.FrameworkUtil; import org.osgi.framework.ServiceRegistration; import com.redhat.thermostat.storage.core.Connection; import com.redhat.thermostat.storage.core.Storage; import com.redhat.thermostat.storage.core.StorageProvider; public class DAOFactoryImpl implements DAOFactory { private final Storage storage; private final BundleContext bundleContext; @SuppressWarnings("rawtypes") private final List<ServiceRegistration> registeredServices = new ArrayList<>(); private AgentInfoDAO agentDAO; private BackendInfoDAO backendInfoDAO; private HostInfoDAO hostInfoDAO; private NetworkInterfaceInfoDAO networkInfoDAO; private VmInfoDAO vmInfoDAO; private VmClassStatDAO vmClassStatDAO; public DAOFactoryImpl(StorageProvider prov) { this(FrameworkUtil.getBundle(DAOFactoryImpl.class).getBundleContext(), prov); } public DAOFactoryImpl(BundleContext bundleContext, StorageProvider prov) { this.bundleContext = bundleContext; storage = prov.createStorage(); } @Override public Connection getConnection() { return storage.getConnection(); } @Override public AgentInfoDAO getAgentInfoDAO() { ensureStorageConnected(); return agentDAO; } @Override public BackendInfoDAO getBackendInfoDAO() { ensureStorageConnected(); return backendInfoDAO; } @Override public HostInfoDAO getHostInfoDAO() { ensureStorageConnected(); return hostInfoDAO; } @Override public NetworkInterfaceInfoDAO getNetworkInterfaceInfoDAO() { ensureStorageConnected(); return networkInfoDAO; } @Override public VmInfoDAO getVmInfoDAO() { ensureStorageConnected(); return vmInfoDAO; } @Override public VmClassStatDAO getVmClassStatsDAO() { ensureStorageConnected(); return vmClassStatDAO; } @Override public Storage getStorage() { return storage; } private void ensureStorageConnected() { if (!storage.getConnection().isConnected()) { throw new IllegalStateException("Set up connection before accessing DAO"); } } @Override public void registerDAOsAndStorageAsOSGiServices() { ensureStorageConnected(); createDAOs(); registerAndRecordService(Storage.class, getStorage()); registerAndRecordService(AgentInfoDAO.class, getAgentInfoDAO()); registerAndRecordService(BackendInfoDAO.class, getBackendInfoDAO()); registerAndRecordService(HostInfoDAO.class, getHostInfoDAO()); registerAndRecordService(NetworkInterfaceInfoDAO.class, getNetworkInterfaceInfoDAO()); registerAndRecordService(VmInfoDAO.class, getVmInfoDAO()); registerAndRecordService(VmClassStatDAO.class, getVmClassStatsDAO()); } /* * Pre: Db connected */ void createDAOs() { agentDAO = new AgentInfoDAOImpl(storage); backendInfoDAO = new BackendInfoDAOImpl(storage); hostInfoDAO = new HostInfoDAOImpl(storage, agentDAO); networkInfoDAO = new NetworkInterfaceInfoDAOImpl(storage); vmInfoDAO = new VmInfoDAOImpl(storage); vmClassStatDAO = new VmClassStatDAOImpl(storage); } private <K> void registerAndRecordService(Class<K> serviceType, K serviceImplementation) { registeredServices.add(bundleContext.registerService(serviceType, serviceImplementation, null)); } public void unregisterDAOsAndStorageAsOSGiServices() { Iterator<ServiceRegistration> iter = registeredServices.iterator(); while (iter.hasNext()) { ServiceRegistration registration = iter.next(); registration.unregister(); iter.remove(); } } }