package org.onap.music.lockingservice.cassandra;
import java.util.ArrayList;
+import java.util.Iterator;
import java.util.List;
import org.onap.music.datastore.MusicDataStore;
import org.onap.music.datastore.PreparedQueryObject;
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.main.DeadlockDetectionUtil;
+import org.onap.music.main.DeadlockDetectionUtil.OwnershipType;
+import org.onap.music.main.MusicUtil;
+import org.onap.music.main.ResultType;
+import org.onap.music.main.ReturnType;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Row;
+import com.datastax.driver.core.Session;
+import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
/*
* This is the lock store that is built on top of Cassandra that is used by MUSIC to maintain lock state.
private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(CassaLockStore.class);
private static String table_prepend_name = "lockQ_";
+ private MusicDataStore dsHandle;
- public class LockObject{
- public String lockRef;
- public String createTime;
- public String acquireTime;
- public LockObject(String lockRef, String createTime, String acquireTime) {
- this.lockRef = lockRef;
- this.acquireTime = acquireTime;
- this.createTime = createTime;
-
- }
- }
- MusicDataStore dsHandle;
public CassaLockStore() {
dsHandle = new MusicDataStore();
}
public CassaLockStore(MusicDataStore dsHandle) {
this.dsHandle=dsHandle;
}
-
+ public class LockObject{
+ private boolean isLockOwner;
+ private String lockRef;
+ private String createTime;
+ private String acquireTime;
+ private LockType locktype;
+ // Owner is the self-declared client which "owns" this row. It is used for deadlock detection. It is not (directly) related to isLockOwner.
+ private String owner;
+ public LockObject(boolean isLockOwner, String lockRef, String createTime, String acquireTime, LockType locktype, String owner) {
+ this.setIsLockOwner(isLockOwner);
+ this.setLockRef(lockRef);
+ this.setAcquireTime(acquireTime);
+ this.setCreateTime(createTime);
+ this.setLocktype(locktype);
+ this.setOwner(owner);
+ }
+ public boolean getIsLockOwner() {
+ return isLockOwner;
+ }
+ public void setIsLockOwner(boolean isLockOwner) {
+ this.isLockOwner = isLockOwner;
+ }
+ public String getAcquireTime() {
+ return acquireTime;
+ }
+ public void setAcquireTime(String acquireTime) {
+ this.acquireTime = acquireTime;
+ }
+ public String getCreateTime() {
+ return createTime;
+ }
+ public void setCreateTime(String createTime) {
+ this.createTime = createTime;
+ }
+ public String getLockRef() {
+ return lockRef;
+ }
+ public void setLockRef(String lockRef) {
+ this.lockRef = lockRef;
+ }
+ public LockType getLocktype() {
+ return locktype;
+ }
+ public void setLocktype(LockType locktype) {
+ this.locktype = locktype;
+ }
+ public String getOwner() {
+ return owner;
+ }
+ public void setOwner(String owner) {
+ this.owner = owner;
+ }
+ }
/**
*
"Create lock queue/table for " + keyspace+"."+table);
table = table_prepend_name+table;
String tabQuery = "CREATE TABLE IF NOT EXISTS "+keyspace+"."+table
- + " ( key text, lockReference bigint, createTime text, acquireTime text, guard bigint static, PRIMARY KEY ((key), lockReference) ) "
+ + " ( key text, lockReference bigint, createTime text, acquireTime text, guard bigint static, "
+ + "lockType text, owner text, PRIMARY KEY ((key), lockReference) ) "
+ "WITH CLUSTERING ORDER BY (lockReference ASC);";
PreparedQueryObject queryObject = new PreparedQueryObject();
* @param keyspace of the locks.
* @param table of the locks.
* @param lockName is the primary key of the lock table
+ * @param lockType is the type of lock (read/write)
+ * @param owner is the owner of the lock (optional, for deadlock detection)
* @return the UUID lock reference.
* @throws MusicServiceException
* @throws MusicQueryException
*/
- public String genLockRefandEnQueue(String keyspace, String table, String lockName) throws MusicServiceException, MusicQueryException {
+ public String genLockRefandEnQueue(String keyspace, String table, String lockName, LockType locktype, String owner) throws MusicServiceException, MusicQueryException, MusicLockingException {
+ return genLockRefandEnQueue(keyspace, table, lockName, locktype, owner, 0);
+ }
+
+ private String genLockRefandEnQueue(String keyspace, String table, String lockName, LockType locktype, String owner, int count) throws MusicServiceException, MusicQueryException, MusicLockingException {
logger.info(EELFLoggerDelegate.applicationLogger,
- "Create lock reference for " + keyspace + "." + table + "." + lockName);
+ "Create " + locktype + " lock reference for " + keyspace + "." + table + "." + lockName);
String lockTable ="";
lockTable = table_prepend_name+table;
-
-
-
+
PreparedQueryObject queryObject = new PreparedQueryObject();
String selectQuery = "SELECT guard FROM " + keyspace + "." + lockTable + " WHERE key=?;";
logger.info(EELFLoggerDelegate.applicationLogger,
"Created lock reference for " + keyspace + "." + lockTable + "." + lockName + ":" + lockRef);
-
+
queryObject = new PreparedQueryObject();
+
String insQuery = "BEGIN BATCH" +
" UPDATE " + keyspace + "." + lockTable +
" SET guard=? WHERE key=? IF guard = " + (prevGuard == 0 ? "NULL" : "?") +";" +
" INSERT INTO " + keyspace + "." + lockTable +
- "(key, lockReference, createTime, acquireTime) VALUES (?,?,?,?) IF NOT EXISTS; APPLY BATCH;";
+ "(key, lockReference, createTime, acquireTime, lockType, owner) VALUES (?,?,?,?,?,?) IF NOT EXISTS; APPLY BATCH;";
queryObject.addValue(lockRef);
queryObject.addValue(lockName);
queryObject.addValue(lockRef);
queryObject.addValue(String.valueOf(lockEpochMillis));
queryObject.addValue("0");
+ queryObject.addValue(locktype);
+ queryObject.addValue(owner);
queryObject.appendQueryString(insQuery);
- dsHandle.executePut(queryObject, "critical");
- return "$"+keyspace+"."+table+"."+lockName+"$"+ lockRef;
+ boolean pResult = dsHandle.executePut(queryObject, "critical");
+ if (!pResult) {// couldn't create lock ref, retry
+ count++;
+ if (count > MusicUtil.getRetryCount()) {
+ logger.warn(EELFLoggerDelegate.applicationLogger, "Unable to create lock reference");
+ throw new MusicLockingException("Unable to create lock reference");
+ }
+ return genLockRefandEnQueue(keyspace, table, lockName, locktype, owner, count);
+ }
+ return "$" + keyspace + "." + table + "." + lockName + "$" + String.valueOf(lockRef);
}
-
- /**
+
+ /**
* Returns a result set containing the list of clients waiting for a particular lock
+ *
* @param keyspace
* @param table
* @param key
public List<String> getLockQueue(String keyspace, String table, String key)
throws MusicServiceException, MusicQueryException {
logger.info(EELFLoggerDelegate.applicationLogger,
- "Getting the queue for " + keyspace+"."+table+"."+key);
- table = table_prepend_name+table;
+ "Getting the queue for " + keyspace + "." + table + "." + key);
+ table = table_prepend_name + table;
String selectQuery = "select * from " + keyspace + "." + table + " where key='" + key + "';";
PreparedQueryObject queryObject = new PreparedQueryObject();
queryObject.appendQueryString(selectQuery);
ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
ArrayList<String> lockQueue = new ArrayList<>();
- for (Row row: rs) {
+ for (Row row : rs) {
lockQueue.add(Long.toString(row.getLong("lockReference")));
}
return lockQueue;
}
-
-
+
+
/**
* Returns a result set containing the list of clients waiting for a particular lock
+ *
* @param keyspace
* @param table
* @param key
public long getLockQueueSize(String keyspace, String table, String key)
throws MusicServiceException, MusicQueryException {
logger.info(EELFLoggerDelegate.applicationLogger,
- "Getting the queue size for " + keyspace+"."+table+"."+key);
- table = table_prepend_name+table;
+ "Getting the queue size for " + keyspace + "." + table + "." + key);
+ table = table_prepend_name + table;
String selectQuery = "select count(*) from " + keyspace + "." + table + " where key='" + key + "';";
PreparedQueryObject queryObject = new PreparedQueryObject();
queryObject.appendQueryString(selectQuery);
- ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
- return rs.one().getLong("count");
- }
+ ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
+ return rs.one().getLong("count");
+ }
/**
* This method returns the top of lock table/queue for the key.
+ *
* @param keyspace of the application.
* @param table of the application.
* @param key is the primary key of the application table
- * @return the UUID lock reference.
+ * @return the UUID lock reference. Returns LockObject.isLockOwner=false if there is no owner or the
+ * lock doesn't exist
* @throws MusicServiceException
* @throws MusicQueryException
*/
- public LockObject peekLockQueue(String keyspace, String table, String key) throws MusicServiceException, MusicQueryException{
+ public LockObject peekLockQueue(String keyspace, String table, String key)
+ throws MusicServiceException, MusicQueryException {
logger.info(EELFLoggerDelegate.applicationLogger,
- "Peek in lock table for " + keyspace+"."+table+"."+key);
- table = table_prepend_name+table;
- String selectQuery = "select * from "+keyspace+"."+table+" where key='"+key+"' LIMIT 1;";
+ "Peek in lock table for " + keyspace + "." + table + "." + key);
+ table = table_prepend_name + table;
+ String selectQuery = "select * from " + keyspace + "." + table + " where key='" + key + "' LIMIT 1;";
PreparedQueryObject queryObject = new PreparedQueryObject();
queryObject.appendQueryString(selectQuery);
ResultSet results = dsHandle.executeOneConsistencyGet(queryObject);
Row row = results.one();
+ if (row == null || row.isNull("lockReference")) {
+ return new LockObject(false, null, null, null, null, null);
+ }
String lockReference = "" + row.getLong("lockReference");
String createTime = row.getString("createTime");
String acquireTime = row.getString("acquireTime");
+ LockType locktype = row.get("lockType", LockType.class);
+ String owner = row.getString("owner");
- return new LockObject(lockReference, createTime,acquireTime);
+ return new LockObject(true, lockReference, createTime, acquireTime, locktype, owner);
}
-
-
+
+ public List<String> getCurrentLockHolders(String keyspace, String table, String key)
+ throws MusicServiceException, MusicQueryException {
+ logger.info(EELFLoggerDelegate.applicationLogger,
+ "Getting lockholders in lock table for " + keyspace + "." + table + "." + key);
+ String origTable = table;
+ table = table_prepend_name + table;
+ String selectQuery = "select * from " + keyspace + "." + table + " where key=?;";
+ List<String> lockHolders = new ArrayList<>();
+ PreparedQueryObject queryObject = new PreparedQueryObject();
+ queryObject.appendQueryString(selectQuery);
+ queryObject.addValue(key);
+ ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
+ boolean topOfQueue = true;
+ StringBuilder lock = new StringBuilder().
+ append("$").append(keyspace).append(".").append(origTable).
+ append(".").append(key).append("$");
+ StringBuilder lockReference = new StringBuilder();
+ for (Row row : rs) {
+ if ( row.isNull("lockReference") ) {
+ return lockHolders;
+ }
+ lockReference.append(lock).append(row.getLong("lockReference"));
+ if (row.get("lockType", LockType.class)!=LockType.WRITE) {
+ if (topOfQueue) {
+ lockHolders.add(lockReference.toString());
+ break;
+ } else {
+ break;
+ }
+ }
+ // read lock
+ lockHolders.add(lockReference.toString());
+
+ topOfQueue = false;
+ lockReference.delete(0,lockReference.length());
+ }
+ return lockHolders;
+ }
+
/**
- * This method removes the lock ref from the lock table/queue for the key.
- * @param keyspace of the application.
- * @param table of the application.
+ * Determine if the lock is a valid current lock holder.
+ *
+ * @param keyspace
+ * @param table
+ * @param key
+ * @param lockRef
+ * @return true if lockRef is a lock owner of key
+ * @throws MusicServiceException
+ * @throws MusicQueryException
+ */
+ public boolean isLockOwner(String keyspace, String table, String key, String lockRef)
+ throws MusicServiceException, MusicQueryException {
+ logger.info(EELFLoggerDelegate.applicationLogger,
+ "Checking in lock table for " + keyspace + "." + table + "." + key);
+ table = table_prepend_name + table;
+ String selectQuery =
+ "select * from " + keyspace + "." + table + " where key=?;";
+ PreparedQueryObject queryObject = new PreparedQueryObject();
+ queryObject.appendQueryString(selectQuery);
+ queryObject.addValue(key);
+ ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
+
+ boolean topOfQueue = true;
+ for (Row row : rs) {
+ String lockReference = "" + row.getLong("lockReference");
+ if (row.get("lockType", LockType.class)==LockType.WRITE) {
+ if (topOfQueue && lockRef.equals(lockReference)) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+ if (lockRef.equals(lockReference)) {
+ return true;
+ }
+ topOfQueue = false;
+ }
+ logger.info(EELFLoggerDelegate.applicationLogger, "Could not find " + lockRef
+ + " in the lock queue. It has expired and no longer exists.");
+ return false;
+ }
+
+ /**
+ * Determine if the lock is a valid current lock holder.
+ *
+ * @param keyspace
+ * @param table
+ * @param key
+ * @param lockRef
+ * @return true if lockRef is a lock owner of key
+ * @throws MusicServiceException
+ * @throws MusicQueryException
+ */
+ public LockObject getLockInfo(String keyspace, String table, String key, String lockRef)
+ throws MusicServiceException, MusicQueryException {
+ logger.info(EELFLoggerDelegate.applicationLogger,
+ "Checking in lock table for " + keyspace + "." + table + "." + key);
+ String lockQ_table = table_prepend_name + table;
+ String selectQuery =
+ "select * from " + keyspace + "." + lockQ_table + " where key=? and lockReference=?;";
+ PreparedQueryObject queryObject = new PreparedQueryObject();
+ queryObject.appendQueryString(selectQuery);
+ queryObject.addValue(key);
+ queryObject.addValue(Long.parseLong(lockRef));
+ ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
+ Row row = rs.one();
+ if (row == null || row.isNull("lockReference")) {
+ return null;
+ }
+
+ String lockReference = "" + row.getLong("lockReference");
+ String createTime = row.getString("createTime");
+ String acquireTime = row.getString("acquireTime");
+ LockType locktype = row.get("lockType", LockType.class);
+ boolean isLockOwner = isLockOwner(keyspace, table, key, lockRef);
+ String owner = row.getString("owner");
+
+ return new LockObject(isLockOwner, lockReference, createTime, acquireTime, locktype, owner);
+ }
+
+
+
+ /**
+ * This method removes the lock ref from the lock table/queue for the key.
+ *
+ * @param keyspace of the application.
+ * @param table of the application.
* @param key is the primary key of the application table
* @param lockReference the lock reference that needs to be dequeued.
* @throws MusicServiceException
* @throws MusicQueryException
- */
- public void deQueueLockRef(String keyspace, String table, String key, String lockReference) throws MusicServiceException, MusicQueryException{
- table = table_prepend_name+table;
+ * @throws MusicLockingException
+ */
+ public void deQueueLockRef(String keyspace, String table, String key, String lockReference, int n)
+ throws MusicServiceException, MusicQueryException, MusicLockingException {
+ String prependTable = table_prepend_name + table;
PreparedQueryObject queryObject = new PreparedQueryObject();
- Long lockReferenceL = Long.parseLong(lockReference.substring(lockReference.lastIndexOf('$')+1));
- String deleteQuery = "delete from "+keyspace+"."+table+" where key='"+key+"' AND lockReference ="+lockReferenceL+" IF EXISTS;";
+ Long lockReferenceL = Long.parseLong(lockReference.substring(lockReference.lastIndexOf("$") + 1));
+ String deleteQuery = "delete from " + keyspace + "." + prependTable + " where key='" + key
+ + "' AND lockReference =" + lockReferenceL + " IF EXISTS;";
queryObject.appendQueryString(deleteQuery);
- dsHandle.executePut(queryObject, "critical");
+ logger.info(EELFLoggerDelegate.applicationLogger, "Removing lock for key: "+key+ " and reference: "+lockReference);
+ try {
+ dsHandle.executePut(queryObject, "critical");
+ logger.info(EELFLoggerDelegate.applicationLogger,
+ "Lock removed for key: " + key + " and reference: " + lockReference);
+ } catch (MusicServiceException ex) {
+ logger.error(logger, ex.getMessage(), ex);
+ logger.error(EELFLoggerDelegate.applicationLogger,
+ "Exception while deQueueLockRef for lockname: " + key + " reference:" + lockReference);
+ if (n > 1) {
+ logger.info(EELFLoggerDelegate.applicationLogger, "Trying again...");
+ deQueueLockRef(keyspace, table, key, lockReference, n - 1);
+ } else {
+ logger.error(EELFLoggerDelegate.applicationLogger,
+ "deQueueLockRef failed for lockname: " + key + " reference:" + lockReference);
+ logger.error(logger, ex.getMessage(), ex);
+ throw new MusicLockingException("Error while deQueueLockRef: " + ex.getMessage());
+ }
+ }
}
-
- public void updateLockAcquireTime(String keyspace, String table, String key, String lockReference) throws MusicServiceException, MusicQueryException{
- table = table_prepend_name+table;
- PreparedQueryObject queryObject = new PreparedQueryObject();
+
+ public void updateLockAcquireTime(String keyspace, String table, String key, String lockReference) {
+ table = table_prepend_name + table;
Long lockReferenceL = Long.parseLong(lockReference);
- String updateQuery = "update "+keyspace+"."+table+" set acquireTime='"+ System.currentTimeMillis()+"' where key='"+key+"' AND lockReference = "+lockReferenceL+" IF EXISTS;";
- queryObject.appendQueryString(updateQuery);
- dsHandle.executePut(queryObject, "eventual");
+ String updateQuery = "update " + keyspace + "." + table + " set acquireTime='" + System.currentTimeMillis()
+ + "' where key='" + key + "' AND lockReference = " + lockReferenceL + " IF EXISTS;";
+
+ //cannot use executePut because we need to ignore music timestamp adjustments for lock store
+ dsHandle.getSession().execute(updateQuery);
+ }
+ public boolean checkForDeadlock(String keyspace, String table, String lockName, LockType locktype, String owner, boolean forAcquire) throws MusicServiceException, MusicQueryException {
+ if (locktype.equals(LockType.READ)) return false;
+ if (owner==null || owner.length()==0) return false;
+
+ String lockTable = table_prepend_name + table;
+ PreparedQueryObject queryObject = new PreparedQueryObject();
+ queryObject.appendQueryString("SELECT key, acquiretime, owner FROM " + keyspace + "." + lockTable);
+ queryObject.appendQueryString(" WHERE lockType = ? ALLOW FILTERING");
+ queryObject.addValue(LockType.WRITE);
+
+ DeadlockDetectionUtil ddu = new DeadlockDetectionUtil();
+
+ ResultSet rs = dsHandle.executeQuorumConsistencyGet(queryObject);
+ logger.debug("rs has " + rs.getAvailableWithoutFetching() + (rs.isFullyFetched()?"":" (or more!)") );
+ Iterator<Row> it = rs.iterator();
+ while (it.hasNext()) {
+ Row row = it.next();
+ logger.debug("key = " + row.getString("key") + ", time = " + row.getString("acquiretime") + ", owner = " + row.getString("owner") );
+ ddu.setExisting(row.getString("key"), row.getString("owner"), ("0".equals(row.getString("acquiretime")))?OwnershipType.CREATED:OwnershipType.ACQUIRED);
+ }
+ boolean deadlock = ddu.checkForDeadlock(lockName, owner, forAcquire?OwnershipType.ACQUIRED:OwnershipType.CREATED);
+ if (deadlock) logger.warn("Deadlock detected when " + owner + " tried to create lock on " + keyspace + "." + lockTable + "." + lockName);
+ return deadlock;
+ }
+
+ public List<String> getAllLocksForOwner(String ownerId, String keyspace, String table) throws MusicServiceException, MusicQueryException {
+ List<String> toRet = new ArrayList<String>();
+ String lockTable = table_prepend_name + table;
+ PreparedQueryObject queryObject = new PreparedQueryObject();
+ queryObject.appendQueryString("SELECT key, lockreference FROM " + keyspace + "." + lockTable);
+ queryObject.appendQueryString(" WHERE owner = '" + ownerId + "' ALLOW FILTERING");
+
+ ResultSet rs = dsHandle.executeQuorumConsistencyGet(queryObject);
+ Iterator<Row> it = rs.iterator();
+ while (it.hasNext()) {
+ Row row = it.next();
+ toRet.add(row.getString("key") + "$" + row.getLong("lockreference"));
+ }
+ return toRet;
+ }
+
+ public ReturnType promoteLock(String keyspace, String table, String key, String lockRef)
+ throws MusicLockingException, MusicServiceException, MusicQueryException {
+ String lockqtable = table_prepend_name + table;
+ String selectQuery = "select * from " + keyspace + "." + lockqtable + " where key=?;";
+
+ PreparedQueryObject queryObject = new PreparedQueryObject();
+ queryObject.appendQueryString(selectQuery);
+ queryObject.addValue(key);
+ ResultSet rs = dsHandle.executeOneConsistencyGet(queryObject);
+
+ long refToPromote = Long.parseLong(lockRef);
+
+ boolean topOfQueue = true;
+ boolean readBlock = false;
+ boolean seenLockToPromote = false;
+ boolean promotionOngoing = false;
+ long readBlockStart = 0;
+ long readBlockEnd = 0;
+
+
+ for (Row row : rs) {
+ long ref = row.getLong("lockreference");
+ LockType lockType = row.get("lockType", LockType.class);
+
+ if (refToPromote==ref) {
+ if (promotionOngoing) {
+ return new ReturnType(ResultType.FAILURE, "Can't promote, already promoting another lockref.");
+ }
+ seenLockToPromote = true;
+ if (!topOfQueue) {
+ readBlockStart = ref;
+ readBlockEnd = ref;
+ break;
+ }
+ } else if (!seenLockToPromote && refToPromote<ref) {
+ return new ReturnType(ResultType.FAILURE, "Lockref does not exist.");
+ }
+
+ if (lockType==LockType.READ || lockType==LockType.PROMOTING) {
+ if (!readBlock) {
+ readBlockStart = ref;
+ readBlock = true;
+ }
+ if (readBlock) {
+ readBlockEnd = ref;
+ }
+ if (lockType==LockType.PROMOTING) {
+ promotionOngoing = true;
+ }
+ }
+
+ if (lockType==LockType.WRITE) {
+ if (refToPromote==ref) {
+ return new ReturnType(ResultType.FAILURE, "Lockref is already write.");
+ }
+ if (readBlock) {
+ readBlock = false;
+ promotionOngoing = false;
+ if (seenLockToPromote) {
+ break;
+ }
+ //can no longer be lock holder after this
+ topOfQueue = false;
+ }
+ }
+ }
+
+ if (readBlockStart<=refToPromote && refToPromote<=readBlockEnd) {
+ if (readBlockStart==refToPromote && refToPromote==readBlockEnd) {
+ promoteLockTo(keyspace, lockqtable, key, lockRef, LockType.WRITE);
+ return new ReturnType(ResultType.SUCCESS, "Lock has successfully been upgraded.");
+ }
+ promoteLockTo(keyspace, lockqtable, key, lockRef, LockType.PROMOTING);
+ return new ReturnType(ResultType.FAILURE, "Your lock upgrade is in progress. Check again to see if successful.");
+ }
+
+ //shouldn't reach here?
+ return new ReturnType(ResultType.FAILURE,"Promotion failed.");
+ }
+
+ private void promoteLockTo(String keyspace, String table, String key, String lockRef, LockType newLockType)
+ throws MusicServiceException, MusicQueryException {
+ PreparedQueryObject queryObject =
+ new PreparedQueryObject("UPDATE " + keyspace + "." + table + " SET lockType=? WHERE key='" + key
+ + "' AND lockReference = " + lockRef + " IF EXISTS;", newLockType);
+
+ //cannot use executePut because we need to ignore music timestamp adjustments for lock store
+ dsHandle.executePut(queryObject, MusicUtil.QUORUM);
}
+
}
Code Review / music.git / blobdiff