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/*
* ============LICENSE_START==========================================
* org.onap.music
* ===================================================================
* Copyright (c) 2017 AT&T Intellectual Property
* ===================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ============LICENSE_END=============================================
* ====================================================================
*/
package org.onap.music.main;
import java.util.List;
import com.datastax.driver.core.*;
import org.onap.music.datastore.*;
import org.onap.music.eelf.logging.EELFLoggerDelegate;
import org.onap.music.exceptions.MusicLockingException;
import org.onap.music.exceptions.MusicQueryException;
import org.onap.music.exceptions.MusicServiceException;
import org.onap.music.lockingservice.cassandra.CassaLockStore;
import org.onap.music.lockingservice.cassandra.MusicLockState;
import org.onap.music.service.MusicCoreService;
import org.onap.music.service.impl.MusicCassaCore;
/**
* This class .....
*
*
*/
public class MusicCore {
private static EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(MusicCore.class);
private static boolean unitTestRun=true;
public static CassaLockStore mLockHandle = null;
private static MusicDataStore mDependantDataStoreHandle = null;
private static MusicCoreService mMusicCore = null;
public static MusicCoreService getSingletonInstance() {
/* Hacks to make singleton instance backward-compatible
Some clients of MusicCore, set the data-store handle directly on MusicDataStoreHandle and
lock-store handle on mLockHandle static field. We should watch for changes in these and
create new Core instance in case they have changed
*/
if (MusicDataStoreHandle.mDstoreHandle != null &&
mDependantDataStoreHandle != MusicDataStoreHandle.mDstoreHandle) {
// Use externally set data-store and lock-store handle
mDependantDataStoreHandle = MusicDataStoreHandle.mDstoreHandle;
mMusicCore = new MusicCassaCore(mDependantDataStoreHandle, mLockHandle);
}
else if (mMusicCore == null) {
String address = MusicUtil.getMyCassaHost();
Cluster cluster;
try {
cluster = CassandraClusterBuilder.connectSmart(MusicUtil.getMyCassaHost());
} catch (MusicServiceException e) {
logger.error(EELFLoggerDelegate.errorLogger, "Can not connect to Cassandra cluster: " + address);
return null;
}
Metadata metadata = cluster.getMetadata();
logger.info(EELFLoggerDelegate.applicationLogger, "Connected to Cassandra cluster "
+ metadata.getClusterName() + " at " + address);
Session session = cluster.connect();
mMusicCore = new MusicCassaCore(cluster, session);
}
return mMusicCore;
}
public static ReturnType acquireLock(String fullyQualifiedKey, String lockReference) throws MusicLockingException, MusicQueryException, MusicServiceException {
return getSingletonInstance().acquireLock(fullyQualifiedKey, lockReference);
}
public static ReturnType acquireLockWithLease(String key, String lockReference, long leasePeriod) throws MusicLockingException, MusicQueryException, MusicServiceException {
return getSingletonInstance().acquireLockWithLease(key, lockReference, leasePeriod);
}
public static String createLockReference(String fullyQualifiedKey) {
return getSingletonInstance().createLockReference(fullyQualifiedKey);
}
public static String createLockReference(String fullyQualifiedKey, boolean isWriteLock) {
return getSingletonInstance().createLockReference(fullyQualifiedKey, isWriteLock);
}
public static MusicLockState forciblyReleaseLock(String fullyQualifiedKey, String lockReference) throws MusicLockingException, MusicServiceException, MusicQueryException{
return getSingletonInstance().forciblyReleaseLock(fullyQualifiedKey, lockReference);
}
public static ResultType createTable(String keyspace, String table, PreparedQueryObject tableQueryObject, String consistency) throws MusicServiceException {
return getSingletonInstance().createTable(keyspace, table, tableQueryObject, consistency);
}
public static ResultSet quorumGet(PreparedQueryObject query) {
return getSingletonInstance().quorumGet(query);
}
public static String whoseTurnIsIt(String fullyQualifiedKey) {
return getSingletonInstance().whoseTurnIsIt(fullyQualifiedKey);
}
public static MusicLockState destroyLockRef(String fullyQualifiedKey, String lockReference) {
return getSingletonInstance().destroyLockRef(fullyQualifiedKey, lockReference);
}
public static MusicLockState voluntaryReleaseLock(String fullyQualifiedKey, String lockReference) throws MusicLockingException {
return getSingletonInstance().voluntaryReleaseLock(fullyQualifiedKey, lockReference);
}
public static ReturnType eventualPut(PreparedQueryObject queryObject) {
return getSingletonInstance().eventualPut(queryObject);
}
public static ReturnType criticalPut(String keyspace, String table, String primaryKeyValue,
PreparedQueryObject queryObject, String lockReference, Condition conditionInfo) {
return getSingletonInstance().criticalPut(keyspace, table, primaryKeyValue, queryObject, lockReference, conditionInfo);
}
public static ResultType nonKeyRelatedPut(PreparedQueryObject queryObject, String consistency) throws MusicServiceException {
return getSingletonInstance().nonKeyRelatedPut(queryObject, consistency);
}
public static ResultSet get(PreparedQueryObject queryObject) throws MusicServiceException{
return getSingletonInstance().get(queryObject);
}
public static ResultSet criticalGet(String keyspace, String table, String primaryKeyValue,
PreparedQueryObject queryObject, String lockReference) throws MusicServiceException{
return getSingletonInstance().criticalGet(keyspace, table, primaryKeyValue, queryObject,lockReference);
}
public static ReturnType atomicPut(String keyspaceName, String tableName, String primaryKey,
PreparedQueryObject queryObject, Condition conditionInfo) throws MusicLockingException, MusicQueryException, MusicServiceException
{
return getSingletonInstance().atomicPut(keyspaceName, tableName, primaryKey, queryObject, conditionInfo);
}
public static ResultSet atomicGet(String keyspaceName, String tableName, String primaryKey,
PreparedQueryObject queryObject) throws MusicServiceException, MusicLockingException, MusicQueryException {
return getSingletonInstance().atomicGet(keyspaceName, tableName, primaryKey, queryObject);
}
public static List<String> getLockQueue(String fullyQualifiedKey)
throws MusicServiceException, MusicQueryException, MusicLockingException{
return getSingletonInstance().getLockQueue(fullyQualifiedKey);
}
public static long getLockQueueSize(String fullyQualifiedKey)
throws MusicServiceException, MusicQueryException, MusicLockingException {
return getSingletonInstance().getLockQueueSize(fullyQualifiedKey);
}
public static MusicDataStore getInstanceDSHandle() {
MusicCoreService singletonInstance = getSingletonInstance();
if (singletonInstance instanceof MusicCassaCore)
return ((MusicCassaCore) singletonInstance).getDataStoreHandle();
return null;
}
}
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