| package edu.uci.ics.asterix.hyracks.bootstrap; |
| |
| import java.rmi.RemoteException; |
| import java.rmi.server.UnicastRemoteObject; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import edu.uci.ics.asterix.common.context.AsterixAppRuntimeContext; |
| import edu.uci.ics.asterix.metadata.MetadataManager; |
| import edu.uci.ics.asterix.metadata.MetadataNode; |
| import edu.uci.ics.asterix.metadata.api.IAsterixStateProxy; |
| import edu.uci.ics.asterix.metadata.api.IMetadataNode; |
| import edu.uci.ics.asterix.metadata.bootstrap.MetadataBootstrap; |
| import edu.uci.ics.asterix.transaction.management.resource.PersistentLocalResourceRepository; |
| import edu.uci.ics.asterix.transaction.management.service.recovery.IRecoveryManager; |
| import edu.uci.ics.asterix.transaction.management.service.recovery.IRecoveryManager.SystemState; |
| import edu.uci.ics.hyracks.api.application.INCApplicationContext; |
| import edu.uci.ics.hyracks.api.application.INCApplicationEntryPoint; |
| |
| public class NCApplicationEntryPoint implements INCApplicationEntryPoint { |
| private static final Logger LOGGER = Logger |
| .getLogger(NCApplicationEntryPoint.class.getName()); |
| |
| private INCApplicationContext ncApplicationContext = null; |
| private AsterixAppRuntimeContext runtimeContext; |
| private String nodeId; |
| private boolean isMetadataNode = false; |
| private boolean stopInitiated = false; |
| private SystemState systemState = SystemState.NEW_UNIVERSE; |
| |
| @Override |
| public void start(INCApplicationContext ncAppCtx, String[] args) |
| throws Exception { |
| ncApplicationContext = ncAppCtx; |
| nodeId = ncApplicationContext.getNodeId(); |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("Starting Asterix node controller: " + nodeId); |
| } |
| |
| runtimeContext = new AsterixAppRuntimeContext(ncApplicationContext); |
| runtimeContext.initialize(); |
| ncApplicationContext.setApplicationObject(runtimeContext); |
| JVMShutdownHook sHook = new JVMShutdownHook(this); |
| Runtime.getRuntime().addShutdownHook(sHook); |
| |
| // #. recover if the system is corrupted by checking system state. |
| IRecoveryManager recoveryMgr = runtimeContext.getTransactionSubsystem() |
| .getRecoveryManager(); |
| systemState = recoveryMgr.getSystemState(); |
| if (systemState != SystemState.NEW_UNIVERSE) { |
| PersistentLocalResourceRepository localResourceRepository = (PersistentLocalResourceRepository) runtimeContext |
| .getLocalResourceRepository(); |
| localResourceRepository.initialize(nodeId, null, false, |
| runtimeContext.getResourceIdFactory()); |
| } |
| if (systemState == SystemState.CORRUPTED) { |
| recoveryMgr.startRecovery(true); |
| } else if (systemState == SystemState.NEW_UNIVERSE) { |
| recoveryMgr.checkpoint(true); |
| } |
| } |
| |
| @Override |
| public void stop() throws Exception { |
| if (!stopInitiated) { |
| runtimeContext.setShuttingdown(true); |
| stopInitiated = true; |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("Stopping Asterix node controller: " + nodeId); |
| } |
| |
| IRecoveryManager recoveryMgr = runtimeContext |
| .getTransactionSubsystem().getRecoveryManager(); |
| recoveryMgr.checkpoint(true); |
| |
| if (isMetadataNode) { |
| MetadataBootstrap.stopUniverse(); |
| } |
| runtimeContext.deinitialize(); |
| } else { |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("Duplicate attempt to stop ignored: " + nodeId); |
| } |
| } |
| } |
| |
| @Override |
| public void notifyStartupComplete() throws Exception { |
| IAsterixStateProxy proxy = (IAsterixStateProxy) ncApplicationContext |
| .getDistributedState(); |
| |
| if (systemState == SystemState.NEW_UNIVERSE) { |
| PersistentLocalResourceRepository localResourceRepository = (PersistentLocalResourceRepository) runtimeContext |
| .getLocalResourceRepository(); |
| System.out.println("nodeid" + nodeId); |
| System.out.println("proxy" + proxy); |
| System.out.println("stores" |
| + proxy.getAsterixProperties().getStores()); |
| System.out.println("store" |
| + proxy.getAsterixProperties().getStores().get(nodeId)[0]); |
| |
| localResourceRepository.initialize(nodeId, proxy |
| .getAsterixProperties().getStores().get(nodeId)[0], true, |
| null); |
| } |
| |
| isMetadataNode = nodeId.equals(proxy.getAsterixProperties() |
| .getMetadataNodeName()); |
| if (isMetadataNode) { |
| registerRemoteMetadataNode(proxy); |
| |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("Bootstrapping metadata"); |
| } |
| MetadataManager.INSTANCE = new MetadataManager(proxy); |
| MetadataManager.INSTANCE.init(); |
| MetadataBootstrap.startUniverse(proxy.getAsterixProperties(), |
| ncApplicationContext, |
| systemState == SystemState.NEW_UNIVERSE); |
| MetadataBootstrap.startDDLRecovery(); |
| } |
| ExternalLibraryBootstrap.setUpExternaLibraries(isMetadataNode); |
| |
| IRecoveryManager recoveryMgr = runtimeContext.getTransactionSubsystem() |
| .getRecoveryManager(); |
| recoveryMgr.checkpoint(true); |
| |
| // TODO |
| // reclaim storage for orphaned index artifacts in NCs. |
| } |
| |
| public void registerRemoteMetadataNode(IAsterixStateProxy proxy) |
| throws RemoteException { |
| IMetadataNode stub = null; |
| MetadataNode.INSTANCE.initialize(runtimeContext); |
| stub = (IMetadataNode) UnicastRemoteObject.exportObject( |
| MetadataNode.INSTANCE, 0); |
| proxy.setMetadataNode(stub); |
| |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("Metadata node bound"); |
| } |
| } |
| |
| /** |
| * Shutdown hook that invokes {@link NCApplicationEntryPoint#stop() stop} |
| * method. |
| */ |
| private static class JVMShutdownHook extends Thread { |
| |
| private final NCApplicationEntryPoint ncAppEntryPoint; |
| |
| public JVMShutdownHook(NCApplicationEntryPoint ncAppEntryPoint) { |
| this.ncAppEntryPoint = ncAppEntryPoint; |
| } |
| |
| public void run() { |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("Shutdown hook in progress"); |
| } |
| try { |
| ncAppEntryPoint.stop(); |
| } catch (Exception e) { |
| if (LOGGER.isLoggable(Level.WARNING)) { |
| LOGGER.warning("Exception in executing shutdown hook" + e); |
| } |
| } |
| } |
| } |
| |
| } |