1 files changed, 79 insertions, 0 deletions
diff --git a/src/main/java/org/onap/crud/service/CrudAsyncGraphEventCache.java b/src/main/java/org/onap/crud/service/CrudAsyncGraphEventCache.java
new file mode 100644
index 0000000..c1ed5ff
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+++ b/src/main/java/org/onap/crud/service/CrudAsyncGraphEventCache.java
@@ -0,0 +1,79 @@
+/**
+ * ============LICENSE_START=======================================================
+ * Gizmo
+ * ================================================================================
+ * Copyright © 2017 AT&T Intellectual Property.
+ * Copyright © 2017 Amdocs
+ * 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.crud.service;
+
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+
+import java.util.concurrent.TimeUnit;
+
+import org.onap.aai.cl.api.Logger;
+import org.onap.aai.cl.eelf.LoggerFactory;
+import org.onap.crud.logging.CrudServiceMsgs;
+import org.onap.crud.service.CrudAsyncGraphDataService.CollectGraphResponse;
+import org.onap.crud.util.CrudProperties;
+import org.onap.crud.util.CrudServiceConstants;
+
+/**
+ * Self expiring Cache to hold request transactionIds . Events are expired
+ * automatically after 2 seconds of request time out
+ */
+public class CrudAsyncGraphEventCache {
+  private static Logger logger = LoggerFactory.getInstance().getLogger(CrudAsyncGraphEventCache
+      .class.getName());
+
+  private static Integer interval;
+
+  static {
+    // Set the cache eviction timeout = request timeout + 2 sec for the
+    // buffer
+    interval = CrudAsyncGraphDataService.DEFAULT_REQUEST_TIMEOUT + 2000;
+    try {
+      interval = Integer
+          .parseInt(CrudProperties.get(CrudServiceConstants.CRD_ASYNC_REQUEST_TIMEOUT) + 2000);
+    } catch (Exception ex) {
+      logger.error(CrudServiceMsgs.ASYNC_DATA_CACHE_ERROR, "Unable to parse "
+          + CrudServiceConstants.CRD_ASYNC_REQUEST_TIMEOUT + " error: "
+          + ex.getMessage());
+    }
+  }
+
+  private final static Cache<String, CollectGraphResponse> cache = CacheBuilder.newBuilder()
+      .expireAfterWrite(interval, TimeUnit.MILLISECONDS).build();
+
+
+  public static void put(String uuid, CollectGraphResponse collector) {
+    cache.put(uuid, collector);
+
+  }
+
+  public static CollectGraphResponse get(String uuid) {
+    return cache.getIfPresent(uuid);
+  }
+
+  public static void invalidate(String uuid) {
+    cache.invalidate(uuid);
+  }
+
+}
+\ No newline at end of file