org.glassfish.jersey.server.internal.monitoring.core.ReservoirConstants Maven / Gradle / Ivy

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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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/*
 * Copyright 2015, 2019 Oracle and/or its affiliates. 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 org.glassfish.jersey.server.internal.monitoring.core;

/**
 * The constants that determine the behaviour of sliding windows and their trimmers.
 *
 * @author Stepan Vavra
 */
public final class ReservoirConstants {

    /**
     * Allow for 2^that many duplicate ticks before throwing away measurements.
     */
    public static final int COLLISION_BUFFER_POWER = 8;

    /**
     * The size of the collision buffer derived from the collision buffer power.
     */
    public static final int COLLISION_BUFFER = 1 << COLLISION_BUFFER_POWER; // 256

    /**
     * Only trim on updating once every N.
     */
    public static final int TRIM_THRESHOLD = 256;

    private ReservoirConstants() {
        throw new AssertionError("Instantiation not allowed.");
    }
}