com.hazelcast.map.impl.MapStatisticsAwareService Maven / Gradle / Ivy

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/*
 * Copyright (c) 2008-2016, Hazelcast, Inc. 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.
 */

package com.hazelcast.map.impl;

import com.hazelcast.core.DistributedObject;
import com.hazelcast.monitor.LocalMapStats;
import com.hazelcast.spi.ProxyService;
import com.hazelcast.spi.StatisticsAwareService;
import com.hazelcast.util.MapUtil;

import java.util.Collection;
import java.util.Map;

/**
 * {@link StatisticsAwareService} implementation for {@link MapService}.
 * Mainly responsible for creating {@link LocalMapStats} for the maps
 * on a local Hazelcast node. Used for node-monitoring purposes in management centre.
 *
 * @see StatisticsAwareService
 */
class MapStatisticsAwareService implements StatisticsAwareService {

    private final MapServiceContext mapServiceContext;
    private final ProxyService proxyService;

    MapStatisticsAwareService(MapServiceContext mapServiceContext) {
        this.mapServiceContext = mapServiceContext;
        this.proxyService = mapServiceContext.getNodeEngine().getProxyService();
    }

    @Override
    public Map getStats() {
        MapServiceContext mapServiceContext = this.mapServiceContext;
        Collection mapProxies = proxyService.getDistributedObjects(MapService.SERVICE_NAME);
        Map mapStats = MapUtil.createHashMap(mapProxies.size());
        for (DistributedObject mapProxy : mapProxies) {
            LocalMapStatsProvider localMapStatsProvider = mapServiceContext.getLocalMapStatsProvider();
            mapStats.put(mapProxy.getName(), localMapStatsProvider.createLocalMapStats(mapProxy.getName()));
        }
        return mapStats;
    }
}