1 files changed, 0 insertions, 254 deletions
diff --git a/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java b/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java
deleted file mode 100644
index 4ed63575..00000000
--- a/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * ============LICENSE_START==========================================
- * org.onap.music
- * ===================================================================
- *  Copyright (c) 2017 AT&T Intellectual Property
- *  Modifications Copyright (C) 2019 IBM.
- * ===================================================================
- *  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.lockingservice.cassandra;
-
-import java.util.ArrayList;
-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.MusicQueryException;
-import org.onap.music.exceptions.MusicServiceException;
-
-import com.datastax.driver.core.ResultSet;
-import com.datastax.driver.core.Row;
-
-/*
- * This is the lock store that is built on top of Cassandra that is used by MUSIC to maintain lock state. 
- */
-
-public class CassaLockStore {
-    
-    private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(CassaLockStore.class);
-    private static String table_prepend_name = "lockQ_";
-    
-    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;
-    }
-
-    
-    /**
-     * 
-     * This method creates a shadow locking table for every main table in Cassandra. This table tracks all information regarding locks. 
-     * @param keyspace of the application. 
-     * @param table of the application. 
-     * @return true if the operation was successful.
-     * @throws MusicServiceException
-     * @throws MusicQueryException
-     */
-    public boolean createLockQueue(String keyspace, String table) throws MusicServiceException, MusicQueryException {
-        logger.info(EELFLoggerDelegate.applicationLogger,
-                "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) ) "
-                + "WITH CLUSTERING ORDER BY (lockReference ASC);";
-        PreparedQueryObject queryObject = new PreparedQueryObject();
-        
-        queryObject.appendQueryString(tabQuery);
-        boolean result;
-        result = dsHandle.executePut(queryObject, "eventual");
-        return result;
-    }
-
-    /**
-     * This method creates a lock reference for each invocation. The lock references are monotonically increasing timestamps.
-     * @param keyspace of the locks.
-     * @param table of the locks.
-     * @param lockName is the primary key of the lock table
-     * @return the UUID lock reference.
-     * @throws MusicServiceException
-     * @throws MusicQueryException
-     */
-    public String genLockRefandEnQueue(String keyspace, String table, String lockName) throws MusicServiceException, MusicQueryException {
-        logger.info(EELFLoggerDelegate.applicationLogger,
-                "Create 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=?;";
-
-        queryObject.addValue(lockName);
-        queryObject.appendQueryString(selectQuery);
-        ResultSet gqResult = dsHandle.executeOneConsistencyGet(queryObject);
-        List<Row> latestGuardRow = gqResult.all();
-
-        long prevGuard = 0;
-        long lockRef = 1;
-        if (!latestGuardRow.isEmpty()) {
-            prevGuard = latestGuardRow.get(0).getLong(0);
-            lockRef = prevGuard + 1;
-        }
-
-        long lockEpochMillis = System.currentTimeMillis();
-
-        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;";
-
-        queryObject.addValue(lockRef);
-        queryObject.addValue(lockName);
-        if (prevGuard != 0)
-            queryObject.addValue(prevGuard);
-
-        queryObject.addValue(lockName);
-        queryObject.addValue(lockRef);
-        queryObject.addValue(String.valueOf(lockEpochMillis));
-        queryObject.addValue("0");
-        queryObject.appendQueryString(insQuery);
-        dsHandle.executePut(queryObject, "critical");
-        return "$"+keyspace+"."+table+"."+lockName+"$"+ lockRef;
-    }
-    
-    /**
-     * Returns a result set containing the list of clients waiting for a particular lock
-     * @param keyspace
-     * @param table
-     * @param key
-     * @return list of lockrefs in the queue
-     * @throws MusicServiceException
-     * @throws MusicQueryException
-     */
-    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;
-        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) {
-            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
-     * @return size of lockrefs queue
-     * @throws MusicServiceException
-     * @throws MusicQueryException
-     */
-    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;
-        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");
-    }
-
-
-    /**
-     * 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.
-     * @throws MusicServiceException
-     * @throws 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;";    
-        PreparedQueryObject queryObject = new PreparedQueryObject();
-        queryObject.appendQueryString(selectQuery);
-        ResultSet results = dsHandle.executeOneConsistencyGet(queryObject);
-        Row row = results.one();
-        String lockReference = "" + row.getLong("lockReference");
-        String createTime = row.getString("createTime");
-        String acquireTime = row.getString("acquireTime");
-
-        return new LockObject(lockReference, createTime,acquireTime);
-    }
-    
-    
-    /**
-     * 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; 
-        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;";
-        queryObject.appendQueryString(deleteQuery);
-        dsHandle.executePut(queryObject, "critical");    
-    }
-    
-
-    public void updateLockAcquireTime(String keyspace, String table, String key, String lockReference) throws MusicServiceException, MusicQueryException{
-        table = table_prepend_name+table;
-        PreparedQueryObject queryObject = new PreparedQueryObject();
-        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");    
-
-    }
-    
-
-}