diff options
Diffstat (limited to 'env/src/main/java/org/onap/aaf/inno/env/util/RefreshableThreadObject.java')
| -rw-r--r-- | env/src/main/java/org/onap/aaf/inno/env/util/RefreshableThreadObject.java | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/env/src/main/java/org/onap/aaf/inno/env/util/RefreshableThreadObject.java b/env/src/main/java/org/onap/aaf/inno/env/util/RefreshableThreadObject.java deleted file mode 100644 index af2cc2f..0000000 --- a/env/src/main/java/org/onap/aaf/inno/env/util/RefreshableThreadObject.java +++ /dev/null @@ -1,125 +0,0 @@ -/*******************************************************************************
- * ============LICENSE_START====================================================
- * * org.onap.aaf
- * * ===========================================================================
- * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
- * * ===========================================================================
- * * 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====================================================
- * *
- * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
- * *
- ******************************************************************************/
-package org.onap.aaf.inno.env.util;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-
-import org.onap.aaf.inno.env.APIException;
-import org.onap.aaf.inno.env.Creatable;
-import org.onap.aaf.inno.env.Env;
-import org.onap.aaf.inno.env.LifeCycle;
-
-
-/**
- * <h1>RefreshableThreadObject</h1>
- * This is a ThreadLocal like implementation, but it responds to
- * the {@link LifeCycle} mechanism for configuration refreshes, and
- * implements {@link Creatable} (for use in destroy, etc).<p>
- *
- * In addition to the Thread instance semantics, it compares when the object
- * was created versus the last "refresh(env)" call when getting, for the
- * thread, and if necessary to replace the created object, destroying the
- * previous.<p>
- *
- * In most cases, it's better to use the new "Pool" mechanism, as it deals with
- * gaining and returning resources on an as needed basis. This, however, remains
- * in the cases where specific Objects need to be retained to specific Threads.<p>
- *
- * There is no way to do this kind of specialized behavior in ThreadLocal.
- *
- *
- * @param <T>
- */
-public class RefreshableThreadObject<T extends Creatable<T>> {
- private Map<Thread,T> objs;
- private long refreshed;
- private Constructor<T> cnst;
-
- /**
- * The passed in class <b>must</b> implement the constructor
- * <pre>
- * public MyClass(Env env) {
- * ...
- * }
- * </pre>
- * @param clss
- * @throws APIException
- */
- public RefreshableThreadObject(Class<T> clss) throws APIException {
- objs = Collections.synchronizedMap(new HashMap<Thread,T>());
- try {
- cnst = clss.getConstructor(new Class[]{Env.class} );
- } catch (Exception e) {
- throw new APIException(e);
- }
- }
-
- /**
- * Get the "T" class from the current thread
- *
- * @param env
- * @return T
- * @throws APIException
- */
- public T get(Env env) throws APIException {
- Thread t = Thread.currentThread();
- T obj = objs.get(t);
- if(obj==null || refreshed>obj.created()) {
- try {
- obj = cnst.newInstance(new Object[]{env});
- } catch (InvocationTargetException e) {
- throw new APIException(e.getTargetException());
- } catch (Exception e) {
- throw new APIException(e);
- }
- T destroyMe = objs.put(t,obj);
- if(destroyMe!=null) {
- destroyMe.destroy(env);
- }
- }
- return obj;
- }
-
- /**
- * Mark the timestamp of refreshed.
- *
- * @param env
- */
- public void refresh(Env env) {
- refreshed = System.currentTimeMillis();
- }
-
- /**
- * Remove the object from the Thread instances
- * @param env
- */
- public void remove(Env env) {
- T obj = objs.remove(Thread.currentThread());
- if(obj!=null)
- obj.destroy(env);
- }
-}
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