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• ResourceMethodStatisticsImpl.java

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org.glassfish.jersey.server.internal.monitoring.ResourceMethodStatisticsImpl Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
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 * recipient has the option to distribute your version of this file under
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package org.glassfish.jersey.server.internal.monitoring;

import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.monitoring.ExecutionStatistics;
import org.glassfish.jersey.server.monitoring.ResourceMethodStatistics;

/**
 * Resource method statistics.
 *
 * @author Miroslav Fuksa (miroslav.fuksa at oracle.com)
 */
class ResourceMethodStatisticsImpl implements ResourceMethodStatistics {
    /**
     * Builder of resource method statistics.
     */
    static class Builder {
        private final ExecutionStatisticsImpl.Builder resourceMethodExecutionStatisticsBuilder;
        private final ExecutionStatisticsImpl.Builder requestExecutionStatisticsBuilder;
        private final ResourceMethod resourceMethod;


        /**
         * Create a new builder instance.
         * @param resourceMethod Resource method for which statistics are evaluated.
         */
        Builder(ResourceMethod resourceMethod) {
            this.resourceMethod = resourceMethod;
            this.resourceMethodExecutionStatisticsBuilder = new ExecutionStatisticsImpl.Builder();
            this.requestExecutionStatisticsBuilder = new ExecutionStatisticsImpl.Builder();
        }

        /**
         * Build an instance of resource method statistics.
         * @return New instance of resource method statistics.
         */
        ResourceMethodStatisticsImpl build() {
            return new ResourceMethodStatisticsImpl(resourceMethod, resourceMethodExecutionStatisticsBuilder.build(),
                    requestExecutionStatisticsBuilder.build());
        }


        /**
         * Add execution of the resource method to the statistics.
         *
         * @param methodStartTime Time spent on execution of resource method itself (Unix timestamp format).
         * @param methodDuration Time of execution of the resource method.
         * @param requestStartTime Time of whole request processing (from receiving the request
         *                         until writing the response). (Unix timestamp format)
         * @param requestDuration Time when the request matching to the executed resource method has been received
         *                         by Jersey.
         */
        void addResourceMethodExecution(long methodStartTime, long methodDuration,
                                        long requestStartTime, long requestDuration) {
            resourceMethodExecutionStatisticsBuilder.addExecution(methodStartTime, methodDuration);
            requestExecutionStatisticsBuilder.addExecution(requestStartTime, requestDuration);
        }
    }

    private final ExecutionStatisticsImpl resourceMethodExecutionStatisticsImpl;
    private final ExecutionStatisticsImpl requestExecutionStatisticsImpl;
    private final ResourceMethod resourceMethod;


    private ResourceMethodStatisticsImpl(ResourceMethod resourceMethod, ExecutionStatisticsImpl resourceMethodExecutionStatisticsImpl,
                                         ExecutionStatisticsImpl requestExecutionStatisticsImpl) {
        this.resourceMethodExecutionStatisticsImpl = resourceMethodExecutionStatisticsImpl;
        this.resourceMethod = resourceMethod;
        this.requestExecutionStatisticsImpl = requestExecutionStatisticsImpl;
    }

    @Override
    public ExecutionStatistics getRequestStatistics() {
        return requestExecutionStatisticsImpl;
    }

    @Override
    public ExecutionStatistics getMethodStatistics() {
        return resourceMethodExecutionStatisticsImpl;
    }

    public ResourceMethod getResourceMethod() {
        return resourceMethod;
    }

    @Override
    public ResourceMethodStatistics snapshot() {
        // snapshot functionality not yet implemented
        return this;
    }
}