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package com.sun.xml.wss.impl.misc;
import com.sun.xml.ws.api.ha.HaInfo;
import com.sun.xml.ws.api.ha.HighAvailabilityProvider;
import com.sun.xml.ws.commons.ha.HaContext;
import com.sun.xml.ws.commons.ha.StickyKey;
import com.sun.xml.wss.NonceManager;
import com.sun.xml.wss.logging.LogStringsMessages;
import java.io.Serializable;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import org.glassfish.ha.store.api.BackingStore;
import org.glassfish.ha.store.api.BackingStoreConfiguration;
import org.glassfish.ha.store.api.BackingStoreException;
import org.glassfish.ha.store.api.BackingStoreFactory;
/**
*
* @author suresh
*/
public class HANonceManager extends NonceManager {
private Long maxNonceAge;
private BackingStore backingStore = null;
private NonceCache localCache;
private final ScheduledExecutorService singleThreadScheduledExecutor = Executors.newSingleThreadScheduledExecutor();
//private boolean isScheduled = false;
public HANonceManager(final long maxNonceAge) {
this.maxNonceAge = maxNonceAge;
try {
final BackingStoreConfiguration bsConfig =
HighAvailabilityProvider.INSTANCE.initBackingStoreConfiguration("HANonceManagerStore", StickyKey.class, HANonceManager.HAPojo.class);
//maxNonceAge is in milliseconds so convert it into seconds
bsConfig.getVendorSpecificSettings().put("max.idle.timeout.in.seconds", maxNonceAge / 1000L);
//bsConfig.getVendorSpecificSettings().put("local.caching", true);
//bsConfig.setClassLoader(this.getClass().getClassLoader());
//not sure whether this statement required or not ?
bsConfig.getVendorSpecificSettings().put(BackingStoreConfiguration.START_GMS, true);
final BackingStoreFactory bsFactory = HighAvailabilityProvider.INSTANCE.getBackingStoreFactory(HighAvailabilityProvider.StoreType.IN_MEMORY);
backingStore = bsFactory.createBackingStore(bsConfig);
localCache = new NonceCache(maxNonceAge);
singleThreadScheduledExecutor.scheduleAtFixedRate(new nonceCleanupTask(), this.maxNonceAge, this.maxNonceAge, TimeUnit.MILLISECONDS);
} catch (BackingStoreException ex) {
LOGGER.log(Level.SEVERE, LogStringsMessages.WSS_0826_ERROR_INITIALIZE_BACKINGSTORE(), ex);
}
}
public HANonceManager(BackingStore backingStore, final long maxNonceAge) {
this.backingStore = backingStore;
this.maxNonceAge = maxNonceAge;
singleThreadScheduledExecutor.scheduleAtFixedRate(new nonceCleanupTask(), this.maxNonceAge, this.maxNonceAge, TimeUnit.MILLISECONDS);
}
@Override
public boolean validateNonce(String nonce, String created) throws NonceException {
//need to eagerly start the NonceCleanupTask otherwise in a cluster mode if the
//first request goes to one instance and second request goes to another one after
//MAX_NONCE_AGE the second instance would detect this as a replay since its NonceCleanup Task
//never executed.
//if(!isScheduled){
// singleThreadScheduledExecutor.scheduleAtFixedRate(new nonceCleanupTask(), maxNonceAge, maxNonceAge, TimeUnit.MILLISECONDS);
// isScheduled = true;
//}
//first check in local NonceCache.
boolean isnewNonce = localCache.validateAndCacheNonce(nonce, created);
byte[] data = created.getBytes();
HAPojo pojo = new HAPojo();
pojo.setData(data);
try {
HAPojo value = null;
try {
value = HighAvailabilityProvider.INSTANCE.loadFrom(backingStore, new StickyKey(nonce), null);
} catch (Exception ex) {
LOGGER.log(Level.WARNING, " exception during load command ", ex);
}
if (value != null) {
final String message = "Nonce Repeated : Nonce Cache already contains the nonce value :" + nonce;
LOGGER.log(Level.WARNING, LogStringsMessages.WSS_0815_NONCE_REPEATED_ERROR(nonce));
throw new NonceManager.NonceException(message);
} else {
HaInfo haInfo = HaContext.currentHaInfo();
if (haInfo != null) {
HaContext.udpateReplicaInstance(HighAvailabilityProvider.INSTANCE.saveTo(backingStore, new StickyKey(nonce, haInfo.getKey()), pojo, true));
} else {
final StickyKey stickyKey = new StickyKey(nonce);
final String replicaId = HighAvailabilityProvider.saveTo(backingStore, stickyKey, pojo, true);
HaContext.updateHaInfo(new HaInfo(stickyKey.getHashKey(), replicaId, false));
}
LOGGER.log(Level.INFO, " nonce {0} saved ", nonce);
}
} catch (Exception ex) {
LOGGER.log(Level.SEVERE, LogStringsMessages.WSS_0825_ERROR_VALIDATE_NONCE(), ex);
return false;
}
return true;
}
public class nonceCleanupTask implements Runnable {
public void run() {
try {
//clear local nonce cache
localCache.removeExpired();
if (backingStore.size() <= 0) {
return;
}
int removed = backingStore.removeExpired(maxNonceAge);
LOGGER.log(Level.INFO, " removed {0} expired entries from backing store ",removed);
} catch (BackingStoreException ex) {
LOGGER.log(Level.SEVERE, LogStringsMessages.WSS_0827_ERROR_REMOVING_EXPIRED_ENTRIES(), ex);
}
}
}
public void remove(String key) throws BackingStoreException{
backingStore.remove(new StickyKey(key));
}
static public class HAPojo implements Serializable {
byte[] data;
public void setData(byte[] data) {
this.data = data;
}
public byte[] getData() {
return this.data;
}
public String toString() {
if (data == null) {
return "";
}
return new String(data);
}
}
}
