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diff --git a/core/src/main/java/com/att/cadi/principal/CachedBasicPrincipal.java b/core/src/main/java/com/att/cadi/principal/CachedBasicPrincipal.java
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+/*******************************************************************************
+ * ============LICENSE_START====================================================
+ * * org.onap.aai
+ * * ===========================================================================
+ * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * * Copyright © 2017 Amdocs
+ * * ===========================================================================
+ * * 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 com.att.cadi.principal;
+
+import java.io.IOException;
+
+import com.att.cadi.BasicCred;
+import com.att.cadi.CachedPrincipal;
+import com.att.cadi.taf.HttpTaf;
+
+/**
+ * Cached Principals need to be able to revalidate in the Background
+ *
+ *
+ */
+public class CachedBasicPrincipal extends BasicPrincipal implements CachedPrincipal {
+ private final HttpTaf creator;
+ private long timeToLive;
+ private long expires;
+
+ public CachedBasicPrincipal(HttpTaf creator, BasicCred bc, String domain, long timeToLive) {
+ super(bc, domain);
+ this.creator = creator;
+ this.timeToLive = timeToLive;
+ expires = System.currentTimeMillis()+timeToLive;
+ }
+
+ public CachedBasicPrincipal(HttpTaf creator, String content, String domain, long timeToLive) throws IOException {
+ super(content, domain);
+ this.creator = creator;
+ this.timeToLive = timeToLive;
+ expires = System.currentTimeMillis()+timeToLive;
+ }
+
+ public CachedPrincipal.Resp revalidate() {
+ Resp resp = creator.revalidate(this);
+ if(resp.equals(Resp.REVALIDATED))expires = System.currentTimeMillis()+timeToLive;
+ return resp;
+ }
+
+ public long expires() {
+ return expires;
+ }
+
+}