+++ /dev/null
-/*
- * Copyright (c) 2017 Inocybe Technologies and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard;
-
-import static java.util.Objects.requireNonNull;
-
-import akka.actor.ActorRef;
-import akka.pattern.Patterns;
-import akka.util.Timeout;
-import com.google.common.base.Stopwatch;
-import com.google.common.cache.Cache;
-import com.google.common.cache.CacheBuilder;
-import java.util.concurrent.TimeUnit;
-import org.opendaylight.controller.cluster.datastore.messages.OnDemandShardState;
-import org.opendaylight.controller.cluster.raft.client.messages.GetOnDemandRaftState;
-import scala.concurrent.Await;
-
-/**
- * Maintains a short-lived shared cache of OnDemandShardState.
- *
- * @author Thomas Pantelis
- */
-class OnDemandShardStateCache {
- private static final Cache<String, OnDemandShardState> ONDEMAND_SHARD_STATE_CACHE =
- CacheBuilder.newBuilder().expireAfterWrite(2, TimeUnit.SECONDS).build();
-
- private final ActorRef shardActor;
- private final String shardName;
- private volatile String stateRetrievalTime;
-
- OnDemandShardStateCache(final String shardName, final ActorRef shardActor) {
- this.shardName = requireNonNull(shardName);
- this.shardActor = shardActor;
- }
-
- OnDemandShardState get() throws Exception {
- if (shardActor == null) {
- return OnDemandShardState.newBuilder().build();
- }
-
- return ONDEMAND_SHARD_STATE_CACHE.get(shardName, this::retrieveState);
- }
-
- String getStatRetrievaelTime() {
- return stateRetrievalTime;
- }
-
- private OnDemandShardState retrieveState() throws Exception {
- stateRetrievalTime = null;
- Timeout timeout = new Timeout(10, TimeUnit.SECONDS);
- Stopwatch timer = Stopwatch.createStarted();
-
- OnDemandShardState state = (OnDemandShardState) Await.result(Patterns.ask(shardActor,
- GetOnDemandRaftState.INSTANCE, timeout), timeout.duration());
-
- stateRetrievalTime = timer.stop().toString();
- return state;
- }
-}