Author: markt
Date: Fri Jan 15 17:40:18 2016
New Revision: 1724863
URL: http://svn.apache.org/viewvc?rev=1724863&view=rev
Log:
Refactoring
Make the session attribute distribution / filtering more consistent across the
various Manager and Session implementation.
Differentiate between
- whether or not it is possible for an attribute to be distributed -
Session.isAttributeDistributable()
- whether or not the Manager wants and attribute to be distributed -
Manager.willAttributeDistribute
Modified:
tomcat/trunk/java/org/apache/catalina/Manager.java
tomcat/trunk/java/org/apache/catalina/Session.java
tomcat/trunk/java/org/apache/catalina/ha/session/ClusterManagerBase.java
tomcat/trunk/java/org/apache/catalina/ha/session/DeltaSession.java
tomcat/trunk/java/org/apache/catalina/manager/DummyProxySession.java
tomcat/trunk/java/org/apache/catalina/session/Constants.java
tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java
tomcat/trunk/java/org/apache/catalina/session/StandardSession.java
tomcat/trunk/java/org/apache/catalina/session/StoreBase.java
Modified: tomcat/trunk/java/org/apache/catalina/Manager.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/Manager.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/Manager.java (original)
+++ tomcat/trunk/java/org/apache/catalina/Manager.java Fri Jan 15 17:40:18 2016
@@ -370,4 +370,18 @@ public interface Manager {
* a method that executes periodic tasks, such as expiring sessions etc.
*/
public void backgroundProcess();
+
+
+ /**
+ * Would the Manager distribute the given session attribute? Manager
+ * implementations may provide additional configuration options to control
+ * which attributes are distributable.
+ *
+ * @param name The attribute name
+ * @param value The attribute value
+ *
+ * @return {@code true} if the Manager would distribute the given attribute
+ * otherwise {@code false}
+ */
+ public boolean willAttributeDistribute(String name, Object value);
}
Modified: tomcat/trunk/java/org/apache/catalina/Session.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/Session.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/Session.java (original)
+++ tomcat/trunk/java/org/apache/catalina/Session.java Fri Jan 15 17:40:18 2016
@@ -356,4 +356,23 @@ public interface Session {
boolean notifySessionListeners, boolean notifyContainerListeners);
+ /**
+ * Does the session implementation support the distributing of the given
+ * attribute? If the Manager is marked as distributable, then this method
+ * must be used to check attributes before adding them to a session and
+ * an {@link IllegalArgumentException} thrown if the proposed attribute is
+ * not distributable.
+ * <p>
+ * Note that the {@link Manager} implementation may further restrict which
+ * attributes are distributed but a {@link Manager} level restriction
should
+ * not trigger an {@link IllegalArgumentException} in
+ * {@link HttpSession#setAttribute(String, Object)}
+ *
+ * @param name The attribute name
+ * @param value The attribute value
+ *
+ * @return {@code true} if distribution is supported, otherwise {@code
+ * false}
+ */
+ public boolean isAttributeDistributable(String name, Object value);
}
Modified:
tomcat/trunk/java/org/apache/catalina/ha/session/ClusterManagerBase.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/ha/session/ClusterManagerBase.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/ha/session/ClusterManagerBase.java
(original)
+++ tomcat/trunk/java/org/apache/catalina/ha/session/ClusterManagerBase.java
Fri Jan 15 17:40:18 2016
@@ -138,14 +138,25 @@ public abstract class ClusterManagerBase
*
* @param name The attribute name
* @return <code>true</code> if the attribute should be distributed
+ *
+ * @deprecated Use {@link #willAttributeDistribute(String, Object)}. Will
be
+ * removed in Tomcat 9.0.x
*/
+ @Deprecated
public boolean willAttributeDistribute(String name) {
+ return willAttributeDistribute(name, null);
+ }
+
+
+ @Override
+ public boolean willAttributeDistribute(String name, Object value) {
if (sessionAttributePattern == null) {
return true;
}
return sessionAttributePattern.matcher(name).matches();
}
+
public static ClassLoader[] getClassLoaders(Context context) {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
Loader loader = context.getLoader();
Modified: tomcat/trunk/java/org/apache/catalina/ha/session/DeltaSession.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/ha/session/DeltaSession.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/ha/session/DeltaSession.java
(original)
+++ tomcat/trunk/java/org/apache/catalina/ha/session/DeltaSession.java Fri Jan
15 17:40:18 2016
@@ -610,42 +610,11 @@ public class DeltaSession extends Standa
return deltaRequest;
}
+
// ------------------------------------------------- HttpSession Properties
// ----------------------------------------------HttpSession Public Methods
-
- /**
- * Check whether the Object can be distributed.
- * The object is always distributable, if the cluster manager
- * decides to never distribute it.
- * @param name The name of the attribute to check
- * @param value The value of the attribute to check
- * @return true if the attribute is distributable, false otherwise
- */
- @Override
- protected boolean isAttributeDistributable(String name, Object value) {
- if (manager instanceof ClusterManagerBase &&
- !((ClusterManagerBase)manager).willAttributeDistribute(name))
- return true;
- return super.isAttributeDistributable(name, value);
- }
-
- /**
- * Exclude attributes from replication.
- * @param name the attribute's name
- * @return true if attribute should not be replicated
- */
- @Override
- protected boolean exclude(String name) {
-
- if (super.exclude(name))
- return true;
- if (manager instanceof ClusterManagerBase)
- return
!((ClusterManagerBase)manager).willAttributeDistribute(name);
- return false;
- }
-
/**
* Remove the object bound with the specified name from this session. If
the
* session does not have an object bound with this name, this method does
@@ -713,7 +682,7 @@ public class DeltaSession extends Standa
lock();
try {
super.setAttribute(name,value, notify);
- if (addDeltaRequest && deltaRequest != null && !exclude(name)) {
+ if (addDeltaRequest && deltaRequest != null && !exclude(name,
value)) {
deltaRequest.setAttribute(name, value);
}
} finally {
@@ -863,9 +832,8 @@ public class DeltaSession extends Standa
for (int i = 0; i < keys.length; i++) {
Object value = null;
value = attributes.get(keys[i]);
- if (value == null || exclude(keys[i]))
- continue;
- else if (value instanceof Serializable) {
+ if (value != null && !exclude(keys[i], value) &&
+ isAttributeDistributable(keys[i], value)) {
saveNames.add(keys[i]);
saveValues.add(value);
}
@@ -908,7 +876,7 @@ public class DeltaSession extends Standa
if (value == null) return;
super.removeAttributeInternal(name,notify);
- if (addDeltaRequest && deltaRequest != null && !exclude(name)) {
+ if (addDeltaRequest && deltaRequest != null && !exclude(name,
null)) {
deltaRequest.removeAttribute(name);
}
Modified: tomcat/trunk/java/org/apache/catalina/manager/DummyProxySession.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/manager/DummyProxySession.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/manager/DummyProxySession.java
(original)
+++ tomcat/trunk/java/org/apache/catalina/manager/DummyProxySession.java Fri
Jan 15 17:40:18 2016
@@ -214,4 +214,9 @@ public class DummyProxySession implement
boolean notifySessionListeners, boolean notifyContainerListeners) {
// NOOP
}
+
+ @Override
+ public boolean isAttributeDistributable(String name, Object value) {
+ return false;
+ }
}
Modified: tomcat/trunk/java/org/apache/catalina/session/Constants.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/Constants.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/session/Constants.java (original)
+++ tomcat/trunk/java/org/apache/catalina/session/Constants.java Fri Jan 15
17:40:18 2016
@@ -14,9 +14,13 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+package org.apache.catalina.session;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
-package org.apache.catalina.session;
+import org.apache.catalina.Globals;
/**
* Manifest constants for the <code>org.apache.catalina.session</code>
@@ -27,6 +31,17 @@ package org.apache.catalina.session;
public class Constants {
- public static final String Package = "org.apache.catalina.session";
-
+ /**
+ * Set of session attribute names used internally by Tomcat that should
+ * always be removed from the session before it is persisted, replicated or
+ * equivalent.
+ */
+ public static final Set<String> excludedAttributeNames;
+
+ static {
+ Set<String> names = new HashSet<>();
+ names.add(Globals.SUBJECT_ATTR);
+ names.add(Globals.GSS_CREDENTIAL_ATTR);
+ excludedAttributeNames = Collections.unmodifiableSet(names);
+ }
}
Modified: tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java (original)
+++ tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java Fri Jan 15
17:40:18 2016
@@ -191,8 +191,7 @@ public abstract class ManagerBase extend
/**
* The string manager for this package.
*/
- protected static final StringManager sm =
- StringManager.getManager(Constants.Package);
+ protected static final StringManager sm =
StringManager.getManager(ManagerBase.class);
/**
* The property change support for this component.
@@ -773,6 +772,17 @@ public abstract class ManagerBase extend
}
+ /**
+ * {@inheritDoc}
+ * <p>
+ * This implementation always returns {@code true}
+ */
+ @Override
+ public boolean willAttributeDistribute(String name, Object value) {
+ return true;
+ }
+
+
// ------------------------------------------------------ Protected Methods
Modified: tomcat/trunk/java/org/apache/catalina/session/StandardSession.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/StandardSession.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/session/StandardSession.java
(original)
+++ tomcat/trunk/java/org/apache/catalina/session/StandardSession.java Fri Jan
15 17:40:18 2016
@@ -162,7 +162,11 @@ public class StandardSession implements
/**
* Set of attribute names which are not allowed to be persisted.
+ *
+ * @deprecated Use {@link Constants#excludedAttributeNames} instead. Will
be
+ * removed in Tomcat 9.
*/
+ @Deprecated
protected static final String[] excludedAttributes = {
Globals.SUBJECT_ATTR,
Globals.GSS_CREDENTIAL_ATTR
@@ -247,8 +251,7 @@ public class StandardSession implements
/**
* The string manager for this package.
*/
- protected static final StringManager sm =
- StringManager.getManager(Constants.Package);
+ protected static final StringManager sm =
StringManager.getManager(StandardSession.class);
/**
@@ -1463,13 +1466,15 @@ public class StandardSession implements
}
// Validate our current state
- if (!isValidInternal())
+ if (!isValidInternal()) {
throw new IllegalStateException(sm.getString(
"standardSession.setAttribute.ise", getIdInternal()));
+ }
if ((manager != null) && manager.getDistributable() &&
- !isAttributeDistributable(name, value))
- throw new IllegalArgumentException
- (sm.getString("standardSession.setAttribute.iae", name));
+ !isAttributeDistributable(name, value) && !exclude(name,
value)) {
+ throw new IllegalArgumentException(sm.getString(
+ "standardSession.setAttribute.iae", name));
+ }
// Construct an event with the new value
HttpSessionBindingEvent event = null;
@@ -1571,15 +1576,14 @@ public class StandardSession implements
}
/**
- * Check whether the Object can be distributed. This implementation
- * simply checks for serializability. Derived classes might use other
- * distribution technology not based on serialization and can extend
- * this check.
- * @param name The name of the attribute to check
- * @param value The value of the attribute to check
- * @return true if the attribute is distributable, false otherwise
+ * {@inheritDoc}
+ * <p>
+ * This implementation simply checks the value for serializability.
+ * Sub-classes might use other distribution technology not based on
+ * serialization and can override this check.
*/
- protected boolean isAttributeDistributable(String name, Object value) {
+ @Override
+ public boolean isAttributeDistributable(String name, Object value) {
return value instanceof Serializable;
}
@@ -1723,15 +1727,40 @@ public class StandardSession implements
* @param name the attribute's name
* @return <code>true</code> if the specified attribute should be
* excluded from serialization
+ *
+ * @deprecated Use {@link #exclude(String, Object)}. Will be removed in
+ * Tomcat 9.0.x.
*/
+ @Deprecated
protected boolean exclude(String name){
+ return exclude(name, null);
+ }
- for (int i = 0; i < excludedAttributes.length; i++) {
- if (name.equalsIgnoreCase(excludedAttributes[i]))
- return true;
- }
- return false;
+ /**
+ * Should the given session attribute be excluded? This implementation
+ * checks:</p>
+ * <ul>
+ * <li>{@link Constants#excludedAttributeNames}</li>
+ * <li>{@link Manager#willAttributeDistribute(String, Object)}</li>
+ * </ul>
+ * Note: This method deliberately does not check
+ * {@link #isAttributeDistributable(String, Object)} which is
+ * deliberately separate to support the checks required in
+ * {@link #setAttribute(String, Object, boolean)}
+ *
+ * @param name The attribute name
+ * @param value The attribute value
+ *
+ * @return {@code true} if the attribute should be excluded from
+ * distribution, otherwise {@false}
+ */
+ protected boolean exclude(String name, Object value) {
+ if (Constants.excludedAttributeNames.contains(name)) {
+ return true;
+ }
+ // Last check so use a short-cut
+ return !getManager().willAttributeDistribute(name, value);
}
Modified: tomcat/trunk/java/org/apache/catalina/session/StoreBase.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/StoreBase.java?rev=1724863&r1=1724862&r2=1724863&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/session/StoreBase.java (original)
+++ tomcat/trunk/java/org/apache/catalina/session/StoreBase.java Fri Jan 15
17:40:18 2016
@@ -51,7 +51,7 @@ public abstract class StoreBase extends
/**
* The string manager for this package.
*/
- protected static final StringManager sm =
StringManager.getManager(Constants.Package);
+ protected static final StringManager sm =
StringManager.getManager(StoreBase.class);
/**
* The Manager with which this Store is associated.
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