org.mitre.openid.connect.service.impl.DefaultStatsService.java Source code

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Here is the source code for org.mitre.openid.connect.service.impl.DefaultStatsService.java

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/*******************************************************************************
 * Copyright 2016 The MITRE Corporation
 *   and the MIT Internet Trust Consortium
 *
 * 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 org.mitre.openid.connect.service.impl;

import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import org.mitre.oauth2.model.ClientDetailsEntity;
import org.mitre.oauth2.service.ClientDetailsEntityService;
import org.mitre.openid.connect.model.ApprovedSite;
import org.mitre.openid.connect.service.ApprovedSiteService;
import org.mitre.openid.connect.service.StatsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.collect.HashMultiset;
import com.google.common.collect.Multiset;

/**
 * @author jricher
 *
 */
@Service
public class DefaultStatsService implements StatsService {

    @Autowired
    private ApprovedSiteService approvedSiteService;

    @Autowired
    private ClientDetailsEntityService clientService;

    // stats cache
    private Supplier<Map<String, Integer>> summaryCache = createSummaryCache();

    private Supplier<Map<String, Integer>> createSummaryCache() {
        return Suppliers.memoizeWithExpiration(new Supplier<Map<String, Integer>>() {
            @Override
            public Map<String, Integer> get() {
                return computeSummaryStats();
            }

        }, 10, TimeUnit.MINUTES);
    }

    private Supplier<Map<Long, Integer>> byClientIdCache = createByClientIdCache();

    private Supplier<Map<Long, Integer>> createByClientIdCache() {
        return Suppliers.memoizeWithExpiration(new Supplier<Map<Long, Integer>>() {
            @Override
            public Map<Long, Integer> get() {
                return computeByClientId();
            }

        }, 10, TimeUnit.MINUTES);
    }

    @Override
    public Map<String, Integer> getSummaryStats() {
        return summaryCache.get();
    }

    // do the actual computation
    private Map<String, Integer> computeSummaryStats() {
        // get all approved sites
        Collection<ApprovedSite> allSites = approvedSiteService.getAll();

        // process to find number of unique users and sites
        Set<String> userIds = new HashSet<>();
        Set<String> clientIds = new HashSet<>();
        for (ApprovedSite approvedSite : allSites) {
            userIds.add(approvedSite.getUserId());
            clientIds.add(approvedSite.getClientId());
        }

        Map<String, Integer> e = new HashMap<>();

        e.put("approvalCount", allSites.size());
        e.put("userCount", userIds.size());
        e.put("clientCount", clientIds.size());
        return e;
    }

    /* (non-Javadoc)
     * @see org.mitre.openid.connect.service.StatsService#calculateByClientId()
     */
    @Override
    public Map<Long, Integer> getByClientId() {
        return byClientIdCache.get();
    }

    private Map<Long, Integer> computeByClientId() {
        // get all approved sites
        Collection<ApprovedSite> allSites = approvedSiteService.getAll();

        Multiset<String> clientIds = HashMultiset.create();
        for (ApprovedSite approvedSite : allSites) {
            clientIds.add(approvedSite.getClientId());
        }

        Map<Long, Integer> counts = getEmptyClientCountMap();
        for (String clientId : clientIds) {
            ClientDetailsEntity client = clientService.loadClientByClientId(clientId);
            counts.put(client.getId(), clientIds.count(clientId));
        }

        return counts;
    }

    /* (non-Javadoc)
     * @see org.mitre.openid.connect.service.StatsService#countForClientId(java.lang.String)
     */
    @Override
    public Integer getCountForClientId(Long id) {

        Map<Long, Integer> counts = getByClientId();
        return counts.get(id);

    }

    /**
     * Create a new map of all client ids set to zero
     * @return
     */
    private Map<Long, Integer> getEmptyClientCountMap() {
        Map<Long, Integer> counts = new HashMap<>();
        Collection<ClientDetailsEntity> clients = clientService.getAllClients();
        for (ClientDetailsEntity client : clients) {
            counts.put(client.getId(), 0);
        }

        return counts;
    }

    /**
     * Reset both stats caches on a trigger (before the timer runs out). Resets the timers.
     */
    @Override
    public void resetCache() {
        summaryCache = createSummaryCache();
        byClientIdCache = createByClientIdCache();
    }

}