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package org.glassfish.persistence.ejb.entitybean.container.distributed;
import com.sun.ejb.containers.EjbContainerUtil;
import org.glassfish.gms.bootstrap.GMSAdapter;
import org.glassfish.gms.bootstrap.GMSAdapterService;
import com.sun.enterprise.ee.cms.core.CallBack;
import com.sun.enterprise.ee.cms.core.GroupManagementService;
import com.sun.enterprise.ee.cms.core.MessageSignal;
import com.sun.enterprise.ee.cms.core.Signal;
import org.jvnet.hk2.annotations.Service;
import javax.inject.Inject;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
@Service
public class ReadOnlyBeanMessageCallBack implements CallBack, DistributedReadOnlyBeanNotifier {
@Inject
private EjbContainerUtil ejbContainerUtil;
@Inject
GMSAdapterService gmsAdapterService;
private static DistributedReadOnlyBeanService _readOnlyBeanService = DistributedEJBServiceFactory
.getDistributedEJBService().getDistributedReadOnlyBeanService();
private GroupManagementService gms;
private static final String GMS_READ_ONLY_COMPONENT_NAME = "__GMS__READ_ONLY_BEAN__";
static final Logger _logger =
LogDomains.getLogger(ReadOnlyBeanMessageCallBack.class, LogDomains.EJB_LOGGER);
public void postConstruct() {
if (!ejbContainerUtil.isDas()) {
if (gmsAdapterService != null) {
GMSAdapter gmsAdapter = gmsAdapterService.getGMSAdapter();
if (gmsAdapter != null) {
gms = gmsAdapter.getModule();
gmsAdapter.registerMessageListener(GMS_READ_ONLY_COMPONENT_NAME, this);
_readOnlyBeanService.setDistributedReadOnlyBeanNotifier(this);
}
}
}
}
public void processNotification(Signal signal) {
try {
MessageSignal messageSignal = (MessageSignal) signal;
byte[] payload = messageSignal.getMessage();
int size = payload.length;
long ejbID = bytesToLong(payload, 0);
if (size == 8) {
_logger.log(Level.WARNING, "ReadOnlyBeanMessageCallBack: " + " Got message for ejbID: " + ejbID);
_readOnlyBeanService.handleRefreshAllRequest(ejbID);
} else {
byte[] pkData = new byte[size - 8];
System.arraycopy(payload, 8, pkData, 0, pkData.length);
_readOnlyBeanService.handleRefreshRequest(ejbID, pkData);
_logger.log(Level.WARNING, "ReadOnlyBeanMessageCallBack: " + " Handled message for ejbID: " + ejbID);
}
} catch (Exception ex) {
_logger.log(Level.WARNING, "ReadOnlyBeanMessageCallBack: " + "Got exception while handling message", ex);
}
}
/**
* This is called by the container after it has called refresh
*
* @param ejbID
* the ejbID that uniquely identifies the container
* @param pk
* The primary key of the bean(s) that is to be refreshed
*/
public void notifyRefresh(long ejbID, byte[] pk) {
int size = pk.length;
byte[] payload = new byte[size + 8];
longToBytes(ejbID, payload, 0);
System.arraycopy(pk, 0, payload, 8, size);
try {
gms.getGroupHandle().sendMessage(GMS_READ_ONLY_COMPONENT_NAME, payload);
_logger.log(Level.WARNING, "ReadOnlyBeanMessageCallBack: " + " Sent message for ejbID: " + ejbID);
} catch (Exception ex) {
_logger.log(Level.WARNING, "ReadOnlyBeanMessageCallBack: " + "Got exception during notifyRefresh", ex);
}
}
/**
* This is called by the container after it has called refresh
*
* @param ejbID
* the ejbID that uniquely identifies the container
* @param pk
* The primary key of the bean(s) that is to be refreshed
*/
public void notifyRefreshAll(long ejbID) {
byte[] payload = new byte[8];
longToBytes(ejbID, payload, 0);
try {
gms.getGroupHandle().sendMessage(GMS_READ_ONLY_COMPONENT_NAME, payload);
} catch (Exception ex) {
_logger.log(Level.WARNING, "ReadOnlyBeanMessageCallBack: " + "Got exception during notifyRefreshAll", ex);
}
}
/**
* Marshal an long to a byte array. The bytes are in BIGENDIAN order. i.e.
* array[offset] is the most-significant-byte and array[offset+7] is the
* least-significant-byte.
*
* @param array
* The array of bytes.
* @param offset
* The offset from which to start marshalling.
*/
private static void longToBytes(long value, byte[] array, int offset) {
array[offset] = (byte) ((value >>> 56) & 0xFF);
array[offset + 1] = (byte) ((value >>> 48) & 0xFF);
array[offset + 2] = (byte) ((value >>> 40) & 0xFF);
array[offset + 3] = (byte) ((value >>> 32) & 0xFF);
array[offset + 4] = (byte) ((value >>> 24) & 0xFF);
array[offset + 5] = (byte) ((value >>> 16) & 0xFF);
array[offset + 6] = (byte) ((value >>> 8) & 0xFF);
array[offset + 7] = (byte) ((value >>> 0) & 0xFF);
}
/**
* Unmarshal a byte array to an long. Assume the bytes are in BIGENDIAN
* order. i.e. array[offset] is the most-significant-byte and
* array[offset+7] is the least-significant-byte.
*
* @param array
* The array of bytes.
* @param offset
* The offset from which to start unmarshalling.
*/
private static long bytesToLong(byte[] array, int offset) {
long l1, l2;
l1 = (long) bytesToInt(array, offset) << 32;
l2 = (long) bytesToInt(array, offset + 4) & 0xFFFFFFFFL;
return (l1 | l2);
}
/**
* Unmarshal a byte array to an integer. Assume the bytes are in BIGENDIAN
* order. i.e. array[offset] is the most-significant-byte and
* array[offset+3] is the least-significant-byte.
*
* @param array
* The array of bytes.
* @param offset
* The offset from which to start unmarshalling.
*/
private static int bytesToInt(byte[] array, int offset) {
int b1, b2, b3, b4;
b1 = (array[offset] << 24) & 0xFF000000;
b2 = (array[offset + 1] << 16) & 0x00FF0000;
b3 = (array[offset + 2] << 8) & 0x0000FF00;
b4 = (array[offset + 3] << 0) & 0x000000FF;
return (b1 | b2 | b3 | b4);
}
}