de.otto.mongodb.profiler.collection.DefaultCollectionProfile.java Source code

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Here is the source code for de.otto.mongodb.profiler.collection.DefaultCollectionProfile.java

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/*
 *  Copyright 2013 Robert Gacki <robert.gacki@cgi.com>
 *
 *  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 de.otto.mongodb.profiler.collection;

import com.mongodb.DBObject;
import de.otto.mongodb.profiler.AverageMeasure;
import org.joda.time.DateTime;

import java.util.Deque;
import java.util.Iterator;
import java.util.concurrent.ConcurrentLinkedDeque;

import static com.google.common.base.Preconditions.checkNotNull;
import static de.otto.mongodb.profiler.util.MongoSupport.require;

/**
 * Default implementation of a collection profile.
 *
 * @author Robert Gacki
 */
public class DefaultCollectionProfile implements CollectionProfile {

    public static final AverageMeasure DEFAULT_PADDING_FACTOR_MEASURE = new AverageMeasure();
    public static final AverageMeasure DEFAULT_DOCUMENT_COUNT_MEASURE = new AverageMeasure();

    private final String collectionName;
    private final Deque<Mark> marks;
    private final boolean cappedCollection;

    private volatile AverageMeasure paddingFactorMeasure;
    private volatile AverageMeasure documentCountMeasure;

    public DefaultCollectionProfile(String collectionName, boolean cappedCollection) {
        this.collectionName = checkNotNull(collectionName);
        this.cappedCollection = cappedCollection;
        this.marks = new ConcurrentLinkedDeque<>();
        this.paddingFactorMeasure = DEFAULT_PADDING_FACTOR_MEASURE;
        this.documentCountMeasure = DEFAULT_DOCUMENT_COUNT_MEASURE;
    }

    public synchronized void reset() {
        this.marks.clear();
        this.paddingFactorMeasure = DEFAULT_PADDING_FACTOR_MEASURE;
        this.documentCountMeasure = DEFAULT_DOCUMENT_COUNT_MEASURE;
    }

    public void removeMarks(DateTime before) {
        final long time = before.getMillis();
        final Iterator<Mark> marks = this.marks.iterator();
        while (marks.hasNext()) {
            if (marks.next().getTime() < time) {
                marks.remove();
            } else {
                return;
            }
        }
    }

    public synchronized void add(DBObject dbo) {

        checkNotNull(dbo);

        final Number documentCount = require("count", Number.class, dbo);
        documentCountMeasure = documentCountMeasure.add(documentCount.doubleValue());

        final Number paddingFactor = require("paddingFactor", Number.class, dbo);
        paddingFactorMeasure = paddingFactorMeasure.add(paddingFactor.doubleValue());

        final Number dataSize = require("size", Number.class, dbo);
        final Number dataStorageSize = require("storageSize", Number.class, dbo);

        final Mark mark = new Mark(System.currentTimeMillis(), paddingFactor.doubleValue(), dataSize.longValue(),
                dataStorageSize.longValue(), documentCount.longValue());
        marks.add(mark);
    }

    public String getCollectionName() {
        return collectionName;
    }

    public boolean isDataAvailable() {
        return !marks.isEmpty();
    }

    public boolean isCappedCollection() {
        return cappedCollection;
    }

    public Deque<Mark> getMarks() {
        return marks;
    }

    public AverageMeasure getPaddingFactorMeasure() {
        return paddingFactorMeasure;
    }

    public AverageMeasure getDocumentCountMeasure() {
        return documentCountMeasure;
    }
}