com.eg.agent.android.harvest.HarvestableCache Maven / Gradle / Ivy

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package com.eg.agent.android.harvest;

import com.eg.agent.android.harvest.type.Harvestable;

import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.CopyOnWriteArrayList;

public class HarvestableCache {
    private static final int DEFAULT_CACHE_LIMIT = 1024;
    private final Collection cache = getNewCache();
    private int limit = 1024;

    protected Collection getNewCache() {
        return new CopyOnWriteArrayList();
    }

    public void add(Harvestable harvestable) {
        if (harvestable != null && this.cache.size() < this.limit) {
            this.cache.add(harvestable);
        }
    }

    public boolean get(Object h) {
        return this.cache.contains(h);
    }

    public Collection flush() {
        if (this.cache.size() == 0) {
            return Collections.emptyList();
        }
        Collection oldCache;
        synchronized (this) {
            oldCache = getNewCache();
            oldCache.addAll(this.cache);
            this.cache.clear();
        }
        return oldCache;
    }

    public int getSize() {
        return this.cache.size();
    }

    public void setLimit(int limit) {
        this.limit = limit;
    }
}