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authorArthur Martella <arthur.martella.1@att.com>2019-09-13 15:59:26 -0400
committerArthur Martella <arthur.martella.1@att.com>2019-09-16 14:24:40 -0400
commitea39a71e28f2772da7d467a410d43a7ddd8d163d (patch)
tree22c89e9b7abc41c7a69623b79a47eccf815e4947
parent4fe3f08aa1c93a1fc81a78544031ef747a747098 (diff)
Deadlock detection by owner
Issue-ID: MUSIC-502 Signed-off-by: Martella, Arthur <arthur.martella.1@att.com> Change-Id: Iec20cfeec96d7031c691055ffba2f65c34854adf
-rwxr-xr-xpom.xml16
-rw-r--r--src/main/java/org/onap/music/datastore/PreparedQueryObject.java23
-rw-r--r--src/main/java/org/onap/music/exceptions/MusicDeadlockException.java75
-rw-r--r--src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java84
-rw-r--r--src/main/java/org/onap/music/main/DeadlockDetectionUtil.java148
-rw-r--r--src/main/java/org/onap/music/main/MusicCore.java10
-rw-r--r--src/main/java/org/onap/music/rest/RestMusicLocksAPI.java3
-rw-r--r--src/main/java/org/onap/music/service/MusicCoreService.java12
-rw-r--r--src/main/java/org/onap/music/service/impl/MusicCassaCore.java47
-rw-r--r--src/test/java/org/onap/music/unittests/TstRestMusicLockAPI.java12
10 files changed, 400 insertions, 30 deletions
diff --git a/pom.xml b/pom.xml
index 406e7864..f8ab95a2 100755
--- a/pom.xml
+++ b/pom.xml
@@ -149,6 +149,7 @@
</configuration>
<executions>
<execution>
+ <phase>install</phase>
<goals>
<goal>repackage</goal>
</goals>
@@ -200,6 +201,7 @@
<version>2.4</version>
<executions>
<execution>
+ <id>base</id>
<phase>install</phase>
<goals>
<goal>install-file</goal>
@@ -212,6 +214,20 @@
<file>${project.build.directory}/${project.artifactId}.jar</file>
</configuration>
</execution>
+ <execution>
+ <id>spring</id>
+ <phase>install</phase>
+ <goals>
+ <goal>install-file</goal>
+ </goals>
+ <configuration>
+ <packaging>jar</packaging>
+ <artifactId>${project.artifactId}-SB</artifactId>
+ <groupId>${project.groupId}</groupId>
+ <version>${project.version}</version>
+ <file>${project.basedir}/distribution/music/${project.artifactId}-SB.jar</file>
+ </configuration>
+ </execution>
</executions>
</plugin>
</plugins>
diff --git a/src/main/java/org/onap/music/datastore/PreparedQueryObject.java b/src/main/java/org/onap/music/datastore/PreparedQueryObject.java
index d65096a7..fdac50be 100644
--- a/src/main/java/org/onap/music/datastore/PreparedQueryObject.java
+++ b/src/main/java/org/onap/music/datastore/PreparedQueryObject.java
@@ -89,7 +89,28 @@ public class PreparedQueryObject {
}
public String getOperation() {
- return operation;
+ if (operation!=null) return operation;
+ if (query.length()==0) return null;
+ String queryStr = query.toString().toLowerCase();
+ String firstOp = null;
+ int firstOpChar = query.length();
+ if (queryStr.indexOf("insert")>-1 && queryStr.indexOf("insert")<firstOpChar) {
+ firstOp = "insert";
+ firstOpChar = queryStr.indexOf("insert");
+ }
+ if (queryStr.indexOf("update")>-1 && queryStr.indexOf("update")<firstOpChar) {
+ firstOp = "update";
+ firstOpChar = queryStr.indexOf("update");
+ }
+ if (queryStr.indexOf("delete")>-1 && queryStr.indexOf("delete")<firstOpChar) {
+ firstOp = "delete";
+ firstOpChar = queryStr.indexOf("delete");
+ }
+ if (queryStr.indexOf("select")>-1 && queryStr.indexOf("select")<firstOpChar) {
+ firstOp = "select";
+ firstOpChar = queryStr.indexOf("select");
+ }
+ return firstOp;
}
public void setOperation(String operation) {
diff --git a/src/main/java/org/onap/music/exceptions/MusicDeadlockException.java b/src/main/java/org/onap/music/exceptions/MusicDeadlockException.java
new file mode 100644
index 00000000..f5478e78
--- /dev/null
+++ b/src/main/java/org/onap/music/exceptions/MusicDeadlockException.java
@@ -0,0 +1,75 @@
+/*
+ * ============LICENSE_START==========================================
+ * org.onap.music
+ * ===================================================================
+ * Copyright (c) 2019 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.exceptions;
+
+public class MusicDeadlockException extends MusicLockingException {
+
+ public String owner = null;
+ public String keyspace = null;
+ public String table = null;
+ public String key = null;
+
+ public MusicDeadlockException() {
+ super();
+ }
+
+ public MusicDeadlockException(String message) {
+ super(message);
+ }
+
+ public MusicDeadlockException(Throwable cause) {
+ super(cause);
+ }
+
+ public MusicDeadlockException(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public MusicDeadlockException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+
+ public void setValues(String owner, String keyspace, String table, String key) {
+ this.owner = owner;
+ this.keyspace = keyspace;
+ this.table = table;
+ this.key = key;
+ }
+
+ public String getOwner() {
+ return owner;
+ }
+
+ public String getKeyspace() {
+ return keyspace;
+ }
+
+ public String getTable() {
+ return table;
+ }
+
+ public String getKey() {
+ return key;
+ }
+
+
+}
diff --git a/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java b/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java
index 06a087ab..f57ecb6e 100644
--- a/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java
+++ b/src/main/java/org/onap/music/lockingservice/cassandra/CassaLockStore.java
@@ -24,6 +24,7 @@
package org.onap.music.lockingservice.cassandra;
import java.util.ArrayList;
+import java.util.Iterator;
import java.util.List;
import org.onap.music.datastore.MusicDataStore;
@@ -32,6 +33,8 @@ 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 com.datastax.driver.core.ResultSet;
@@ -60,12 +63,15 @@ public class CassaLockStore {
private String createTime;
private String acquireTime;
private LockType locktype;
- public LockObject(boolean isLockOwner, String lockRef, String createTime, String acquireTime, 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;
@@ -97,6 +103,12 @@ public class CassaLockStore {
public void setLocktype(LockType locktype) {
this.locktype = locktype;
}
+ public String getOwner() {
+ return owner;
+ }
+ public void setOwner(String owner) {
+ this.owner = owner;
+ }
}
/**
@@ -114,7 +126,7 @@ public class CassaLockStore {
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, "
- + "writeLock boolean, PRIMARY KEY ((key), lockReference) ) "
+ + "writeLock boolean, owner text, PRIMARY KEY ((key), lockReference) ) "
+ "WITH CLUSTERING ORDER BY (lockReference ASC);";
PreparedQueryObject queryObject = new PreparedQueryObject();
@@ -129,22 +141,22 @@ public class CassaLockStore {
* @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, LockType locktype) throws MusicServiceException, MusicQueryException, MusicLockingException {
- return genLockRefandEnQueue(keyspace, table, lockName, locktype, 0);
+ 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, int count) throws MusicServiceException, MusicQueryException, MusicLockingException {
+ private String genLockRefandEnQueue(String keyspace, String table, String lockName, LockType locktype, String owner, int count) throws MusicServiceException, MusicQueryException, MusicLockingException {
logger.info(EELFLoggerDelegate.applicationLogger,
"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=?;";
@@ -170,7 +182,7 @@ public class CassaLockStore {
" UPDATE " + keyspace + "." + lockTable +
" SET guard=? WHERE key=? IF guard = " + (prevGuard == 0 ? "NULL" : "?") +";" +
" INSERT INTO " + keyspace + "." + lockTable +
- "(key, lockReference, createTime, acquireTime, writeLock) VALUES (?,?,?,?,?) IF NOT EXISTS; APPLY BATCH;";
+ "(key, lockReference, createTime, acquireTime, writeLock, owner) VALUES (?,?,?,?,?,?) IF NOT EXISTS; APPLY BATCH;";
queryObject.addValue(lockRef);
queryObject.addValue(lockName);
@@ -182,6 +194,7 @@ public class CassaLockStore {
queryObject.addValue(String.valueOf(lockEpochMillis));
queryObject.addValue("0");
queryObject.addValue(locktype==LockType.WRITE ? true : false );
+ queryObject.addValue(owner);
queryObject.appendQueryString(insQuery);
boolean pResult = dsHandle.executePut(queryObject, "critical");
if (!pResult) {// couldn't create lock ref, retry
@@ -190,14 +203,12 @@ public class CassaLockStore {
logger.warn(EELFLoggerDelegate.applicationLogger, "Unable to create lock reference");
throw new MusicLockingException("Unable to create lock reference");
}
- return genLockRefandEnQueue(keyspace, table, lockName, locktype, count);
+ 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
@@ -269,14 +280,15 @@ public class CassaLockStore {
ResultSet results = dsHandle.executeOneConsistencyGet(queryObject);
Row row = results.one();
if (row == null || row.isNull("lockReference")) {
- return new LockObject(false, null, null, null, null);
+ 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.isNull("writeLock") || row.getBool("writeLock") ? LockType.WRITE : LockType.READ;
+ String owner = row.getString("owner");
- return new LockObject(true, lockReference, createTime, acquireTime, locktype);
+ return new LockObject(true, lockReference, createTime, acquireTime, locktype, owner);
}
public List<String> getCurrentLockHolders(String keyspace, String table, String key)
@@ -394,8 +406,9 @@ public class CassaLockStore {
String acquireTime = row.getString("acquireTime");
LockType locktype = row.isNull("writeLock") || row.getBool("writeLock") ? LockType.WRITE : LockType.READ;
boolean isLockOwner = isLockOwner(keyspace, table, key, lockRef);
+ String owner = row.getString("owner");
- return new LockObject(isLockOwner, lockReference, createTime, acquireTime, locktype);
+ return new LockObject(isLockOwner, lockReference, createTime, acquireTime, locktype, owner);
}
@@ -454,4 +467,45 @@ public class CassaLockStore {
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 writelock = True ALLOW FILTERING");
+
+ 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;
+ }
+
+
}
diff --git a/src/main/java/org/onap/music/main/DeadlockDetectionUtil.java b/src/main/java/org/onap/music/main/DeadlockDetectionUtil.java
new file mode 100644
index 00000000..4c9a74b7
--- /dev/null
+++ b/src/main/java/org/onap/music/main/DeadlockDetectionUtil.java
@@ -0,0 +1,148 @@
+/*
+ * ============LICENSE_START==========================================
+ * org.onap.music
+ * ===================================================================
+ * Copyright (c) 2019 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.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class DeadlockDetectionUtil {
+ private Map<String, Node> nodeList = null;
+ public enum OwnershipType {NONE, CREATED, ACQUIRED};
+
+ private class Node implements Comparable<Node> {
+ private String id;
+ private List<Node> links;
+ private boolean visited = false;
+ private boolean onStack = false;
+
+ @Override
+ public String toString() {
+ StringBuffer sb = new StringBuffer();
+ for (Node link : links) sb.append(link.id);
+ return "Node [id=" + id + ", links=" + sb.toString() + ", visited=" + visited + ", onStack=" + onStack + "]";
+ }
+
+ public Node(String id) {
+ super();
+ this.id = id;
+ this.links = new ArrayList<Node>();
+ }
+
+ public List<Node> getLinks() {
+ return links;
+ }
+
+ public void addLink(Node link) {
+ this.links.add(link);
+ }
+
+ public void removeLink(Node link) {
+ this.links.remove(link);
+ }
+
+ public boolean isVisited() {
+ return visited;
+ }
+
+ public boolean isOnStack() {
+ return onStack;
+ }
+
+ public void setVisited(boolean visited) {
+ this.visited = visited;
+ }
+
+ public void setOnStack(boolean onStack) {
+ this.onStack = onStack;
+ }
+
+ @Override
+ public int compareTo(Node arg0) {
+ return id.compareTo(arg0.id);
+ }
+ }
+
+ public DeadlockDetectionUtil() {
+ this.nodeList = new HashMap<String, Node>();
+ }
+
+ public void listAllNodes() {
+ System.out.println("In DeadlockDetectionUtil: ");
+ for (String key : nodeList.keySet()) {
+ System.out.println(" " + key + " : " + nodeList.get(key));
+ }
+ }
+
+ public boolean checkForDeadlock(String resource, String owner, OwnershipType operation) {
+ setExisting(resource, owner, operation);
+
+ Node currentNode = null;
+ if (operation.equals(OwnershipType.ACQUIRED)) {
+ currentNode = nodeList.get("r" + resource);
+ } else if (operation.equals(OwnershipType.CREATED)) {
+ currentNode = nodeList.get("o" + owner);
+ }
+
+ boolean cycle = findCycle(currentNode);
+ return cycle;
+ }
+
+ private boolean findCycle(Node currentNode) {
+ if (currentNode==null) return false;
+ if (currentNode.isOnStack()) return true;
+ if (currentNode.isVisited()) return false;
+ currentNode.setOnStack(true);
+ currentNode.setVisited(true);
+ for (Node childNode : currentNode.getLinks()) {
+ if (findCycle(childNode)) return true;
+ }
+ currentNode.setOnStack(false);
+ return false;
+ }
+
+ public void setExisting(String resource, String owner, OwnershipType operation) {
+ String resourceKey = "r" + resource;
+ Node resourceNode = nodeList.get(resourceKey);
+ if (resourceNode==null) {
+ resourceNode = new Node(resourceKey);
+ nodeList.put(resourceKey, resourceNode);
+ }
+
+ String ownerKey = "o" + owner;
+ Node ownerNode = nodeList.get(ownerKey);
+ if (ownerNode==null) {
+ ownerNode = new Node(ownerKey);
+ nodeList.put(ownerKey, ownerNode);
+ }
+
+ if (operation.equals(OwnershipType.ACQUIRED)) {
+ resourceNode.addLink(ownerNode);
+ ownerNode.removeLink(resourceNode);
+ } else if (operation.equals(OwnershipType.CREATED)) {
+ ownerNode.addLink(resourceNode);
+ resourceNode.removeLink(ownerNode);
+ }
+ }
+
+}
diff --git a/src/main/java/org/onap/music/main/MusicCore.java b/src/main/java/org/onap/music/main/MusicCore.java
index da94e1a6..e889e180 100644
--- a/src/main/java/org/onap/music/main/MusicCore.java
+++ b/src/main/java/org/onap/music/main/MusicCore.java
@@ -89,6 +89,10 @@ public class MusicCore {
return musicCore.createLockReference(fullyQualifiedKey, locktype);
}
+ public static String createLockReference(String fullyQualifiedKey, LockType locktype, String owner) throws MusicLockingException {
+ return musicCore.createLockReference(fullyQualifiedKey, locktype, owner);
+ }
+
public static ResultType createTable(String keyspace, String table, PreparedQueryObject tableQueryObject,
String consistency) throws MusicServiceException {
return musicCore.createTable(keyspace, table, tableQueryObject, consistency);
@@ -193,6 +197,10 @@ public class MusicCore {
return musicCore.releaseLock(lockId, voluntaryRelease);
}
+ public static List<String> releaseAllLocksForOwner(String ownerId, String keyspace, String table) throws MusicLockingException, MusicServiceException, MusicQueryException {
+ return musicCore.releaseAllLocksForOwner(ownerId, keyspace, table);
+ }
+
//Added changes for orm implementation.
public static ResultType createKeyspace(JsonKeySpace jsonKeySpaceObject, String consistencyInfo)
@@ -245,6 +253,4 @@ public class MusicCore {
return musicCore.deleteFromTable(jsonDeleteObj,rowParams);
}
-
-
}
diff --git a/src/main/java/org/onap/music/rest/RestMusicLocksAPI.java b/src/main/java/org/onap/music/rest/RestMusicLocksAPI.java
index 35f03e60..c08fc5d8 100644
--- a/src/main/java/org/onap/music/rest/RestMusicLocksAPI.java
+++ b/src/main/java/org/onap/music/rest/RestMusicLocksAPI.java
@@ -116,6 +116,7 @@ public class RestMusicLocksAPI {
@ApiParam(value = "Authorization", required = true) @HeaderParam(MusicUtil.AUTHORIZATION) String authorization,
@ApiParam(value = "AID", required = false, hidden = true) @HeaderParam("aid") String aid,
JsonLock lockObject,
+ @ApiParam(value = "Lock Owner", required = false) @HeaderParam("owner") String owner,
@ApiParam(value = "Application namespace",
required = false, hidden = true) @HeaderParam("ns") String ns) throws Exception{
try {
@@ -136,7 +137,7 @@ public class RestMusicLocksAPI {
}
String lockId;
try {
- lockId= MusicCore.createLockReference(lockName, locktype);
+ lockId= MusicCore.createLockReference(lockName, locktype, owner);
} catch (MusicLockingException e) {
return response.status(Status.BAD_REQUEST).entity(new JsonResponse(ResultType.FAILURE).setError(e.getMessage()).toMap()).build();
}
diff --git a/src/main/java/org/onap/music/service/MusicCoreService.java b/src/main/java/org/onap/music/service/MusicCoreService.java
index c96d2b30..1ecb2ee1 100644
--- a/src/main/java/org/onap/music/service/MusicCoreService.java
+++ b/src/main/java/org/onap/music/service/MusicCoreService.java
@@ -98,6 +98,14 @@ public interface MusicCoreService {
*/
public String createLockReference(String fullyQualifiedKey, LockType locktype) throws MusicLockingException;
+ /**
+ * Create a lock ref in the music lock store
+ * @param fullyQualifiedKey the key to create a lock on
+ * @param locktype the type of lock create, see {@link LockType}
+ * @param owner the owner of the lock, for deadlock prevention
+ */
+ public String createLockReference(String fullyQualifiedKey, LockType locktype, String owner) throws MusicLockingException;
+
public ReturnType acquireLockWithLease(String key, String lockReference, long leasePeriod)
throws MusicLockingException, MusicQueryException, MusicServiceException; // key,lock id,time
@@ -143,7 +151,9 @@ public interface MusicCoreService {
public Map<String, Object> validateLock(String lockName);
public MusicLockState releaseLock(String lockId, boolean voluntaryRelease) throws MusicLockingException;
-
+
+ public List<String> releaseAllLocksForOwner(String ownerId, String keyspace, String table) throws MusicLockingException, MusicServiceException, MusicQueryException;
+
//Methods added for orm
diff --git a/src/main/java/org/onap/music/service/impl/MusicCassaCore.java b/src/main/java/org/onap/music/service/impl/MusicCassaCore.java
index 5c02d34d..0c30cc74 100644
--- a/src/main/java/org/onap/music/service/impl/MusicCassaCore.java
+++ b/src/main/java/org/onap/music/service/impl/MusicCassaCore.java
@@ -47,6 +47,7 @@ import org.onap.music.eelf.logging.EELFLoggerDelegate;
import org.onap.music.eelf.logging.format.AppMessages;
import org.onap.music.eelf.logging.format.ErrorSeverity;
import org.onap.music.eelf.logging.format.ErrorTypes;
+import org.onap.music.exceptions.MusicDeadlockException;
import org.onap.music.exceptions.MusicLockingException;
import org.onap.music.exceptions.MusicQueryException;
import org.onap.music.exceptions.MusicServiceException;
@@ -116,6 +117,10 @@ public class MusicCassaCore implements MusicCoreService {
}
public String createLockReference(String fullyQualifiedKey, LockType locktype) throws MusicLockingException {
+ return createLockReference(fullyQualifiedKey, locktype, null);
+ }
+
+ public String createLockReference(String fullyQualifiedKey, LockType locktype, String owner) throws MusicLockingException {
String[] splitString = fullyQualifiedKey.split("\\.");
String keyspace = splitString[0];
String table = splitString[1];
@@ -124,15 +129,30 @@ public class MusicCassaCore implements MusicCoreService {
logger.info(EELFLoggerDelegate.applicationLogger,"Creating lock reference for lock name:" + lockName);
long start = System.currentTimeMillis();
String lockReference = null;
+
+ try {
+ boolean deadlock = getLockingServiceHandle().checkForDeadlock(keyspace, table, lockName, locktype, owner, false);
+ if (deadlock) {
+ MusicDeadlockException e = new MusicDeadlockException("Deadlock detected when " + owner + " tried to create lock on " + keyspace + "." + table + "." + lockName);
+ e.setValues(owner, keyspace, table, lockName);
+ throw e;
+ }
+ } catch (MusicDeadlockException e) {
+ //just threw this, no need to wrap it
+ throw e;
+ } catch (MusicServiceException | MusicQueryException e) {
+ logger.error(EELFLoggerDelegate.applicationLogger, e);
+ throw new MusicLockingException("Unable to check for deadlock. " + e.getMessage(), e);
+ }
try {
- lockReference = "" + getLockingServiceHandle().genLockRefandEnQueue(keyspace, table, lockName, locktype);
+ lockReference = "" + getLockingServiceHandle().genLockRefandEnQueue(keyspace, table, lockName, locktype, owner);
} catch (MusicLockingException | MusicServiceException | MusicQueryException e) {
logger.error(EELFLoggerDelegate.applicationLogger, e);
- throw new MusicLockingException("Unable to create lock reference. " + e.getMessage());
+ throw new MusicLockingException("Unable to create lock reference. " + e.getMessage(), e);
} catch (Exception e) {
logger.error(EELFLoggerDelegate.applicationLogger, e);
- throw new MusicLockingException("Unable to create lock reference. " + e.getMessage());
+ throw new MusicLockingException("Unable to create lock reference. " + e.getMessage(), e);
}
long end = System.currentTimeMillis();
logger.info(EELFLoggerDelegate.applicationLogger,"Time taken to create lock reference:" + (end - start) + " ms");
@@ -185,6 +205,12 @@ public class MusicCassaCore implements MusicCoreService {
return new ReturnType(ResultType.FAILURE, lockId + " is not a lock holder");//not top of the lock store q
}
+ if (getLockingServiceHandle().checkForDeadlock(keyspace, table, primaryKeyValue, lockInfo.getLocktype(), lockInfo.getOwner(), true)) {
+ MusicDeadlockException e = new MusicDeadlockException("Deadlock detected when " + lockInfo.getOwner() + " tried to create lock on " + keyspace + "." + table + "." + primaryKeyValue);
+ e.setValues(lockInfo.getOwner(), keyspace, table, primaryKeyValue);
+ throw e;
+ }
+
//check to see if the value of the key has to be synced in case there was a forceful release
String syncTable = keyspace+".unsyncedKeys_"+table;
String query = "select * from "+syncTable+" where key='"+localFullyQualifiedKey+"';";
@@ -319,7 +345,7 @@ public class MusicCassaCore implements MusicCoreService {
String table = splitString[1];
String primaryKeyValue = splitString[2];
try {
- return getLockingServiceHandle().getCurrentLockHolders(keyspace, table, primaryKeyValue);
+ return getLockingServiceHandle().getCurrentLockHolders(keyspace, table, primaryKeyValue);
} catch (MusicLockingException | MusicServiceException | MusicQueryException e) {
logger.error(EELFLoggerDelegate.errorLogger,e.getMessage(), AppMessages.LOCKINGERROR+fullyQualifiedKey ,ErrorSeverity.CRITICAL, ErrorTypes.LOCKINGERROR);
}
@@ -421,6 +447,19 @@ public class MusicCassaCore implements MusicCoreService {
return destroyLockRef(fullyQualifiedKey, lockReference);
}
+ @Override
+ public List<String> releaseAllLocksForOwner(String ownerId, String keyspace, String table) throws MusicLockingException, MusicServiceException, MusicQueryException {
+// System.out.println("IN RELEASEALLLOCKSFOROWNER, ");
+
+ List<String> lockIds = getLockingServiceHandle().getAllLocksForOwner(ownerId, keyspace, table);
+ for (String lockId : lockIds) {
+// System.out.println(" LOCKID = " + lockId);
+ //return "$" + keyspace + "." + table + "." + lockName + "$" + String.valueOf(lockRef);
+ releaseLock("$" + keyspace + "." + table + "." + lockId, true);
+ }
+ return lockIds;
+ }
+
/**
*
* @param lockName
diff --git a/src/test/java/org/onap/music/unittests/TstRestMusicLockAPI.java b/src/test/java/org/onap/music/unittests/TstRestMusicLockAPI.java
index ec7659a6..98afe858 100644
--- a/src/test/java/org/onap/music/unittests/TstRestMusicLockAPI.java
+++ b/src/test/java/org/onap/music/unittests/TstRestMusicLockAPI.java
@@ -115,7 +115,7 @@ public class TstRestMusicLockAPI {
System.out.println("Testing create lockref");
createAndInsertIntoTable();
Response response = lock.createLockReference(lockName, "1", "1", authorization,
- "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", null, appName);
+ "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", null, null, appName);
Map<String, Object> respMap = (Map<String, Object>) response.getEntity();
System.out.println("Status: " + response.getStatus() + ". Entity " + response.getEntity());
@@ -129,7 +129,7 @@ public class TstRestMusicLockAPI {
System.out.println("Testing create bad lockref");
createAndInsertIntoTable();
Response response = lock.createLockReference("badlock", "1", "1", authorization,
- "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", null, appName);
+ "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", null, null, appName);
Map<String, Object> respMap = (Map<String, Object>) response.getEntity();
System.out.println("Status: " + response.getStatus() + ". Entity " + response.getEntity());
@@ -142,7 +142,7 @@ public class TstRestMusicLockAPI {
createAndInsertIntoTable();
JsonLock jsonLock = createJsonLock(LockType.READ);
Response response = lock.createLockReference(lockName, "1", "1", authorization,
- "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", jsonLock, appName);
+ "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", jsonLock, null, appName);
Map<String, Object> respMap = (Map<String, Object>) response.getEntity();
System.out.println("Status: " + response.getStatus() + ". Entity " + response.getEntity());
@@ -157,7 +157,7 @@ public class TstRestMusicLockAPI {
createAndInsertIntoTable();
JsonLock jsonLock = createJsonLock(LockType.WRITE);
Response response = lock.createLockReference(lockName, "1", "1", authorization,
- "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", jsonLock, appName);
+ "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", jsonLock, null, appName);
Map<String, Object> respMap = (Map<String, Object>) response.getEntity();
System.out.println("Status: " + response.getStatus() + ". Entity " + response.getEntity());
@@ -463,7 +463,7 @@ public class TstRestMusicLockAPI {
@SuppressWarnings("unchecked")
private String createLockReference() throws Exception {
Response response = lock.createLockReference(lockName, "1", "1", authorization,
- "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", null, appName);
+ "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", null, null, appName);
Map<String, Object> respMap = (Map<String, Object>) response.getEntity();
return ((Map<String, String>) respMap.get("lock")).get("lock");
}
@@ -478,7 +478,7 @@ public class TstRestMusicLockAPI {
private String createLockReference(LockType lockType) throws Exception {
JsonLock jsonLock = createJsonLock(lockType);
Response response = lock.createLockReference(lockName, "1", "1", authorization,
- "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", jsonLock, appName);
+ "abc66ccc-d857-4e90-b1e5-df98a3d40ce6", jsonLock, null, appName);
Map<String, Object> respMap = (Map<String, Object>) response.getEntity();
return ((Map<String, String>) respMap.get("lock")).get("lock");
}