home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (ConnManagerParams.java)

This example source code file (ConnManagerParams.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

connmanagerparams, connmanagerpnames, connperroute, default_conn_per_route, default_max_total_connections, http, httpparams, illegalargumentexception, immutable

The ConnManagerParams.java example source code

/*
 * ====================================================================
 *
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.conn.params;

import org.apache.http.annotation.Immutable;

import org.apache.http.conn.routing.HttpRoute;
import org.apache.http.params.HttpParams;

/**
 * An adaptor for manipulating HTTP connection management 
 * parameters in {@link HttpParams}.
 * 
 * @since 4.0
 *
 * @see ConnManagerPNames
 */
@Immutable
public final class ConnManagerParams implements ConnManagerPNames {

    /** The default maximum number of connections allowed overall */
    public static final int DEFAULT_MAX_TOTAL_CONNECTIONS = 20;

    /**
     * Returns the timeout in milliseconds used when retrieving a
     * {@link org.apache.http.conn.ManagedClientConnection} from the
     * {@link org.apache.http.conn.ClientConnectionManager}.
     * 
     * @return timeout in milliseconds.
     */ 
    public static long getTimeout(final HttpParams params) {
        if (params == null) {
            throw new IllegalArgumentException("HTTP parameters may not be null");
        }
        return params.getLongParameter(TIMEOUT, 0);
    }

    /**
     * Sets the timeout in milliseconds used when retrieving a
     * {@link org.apache.http.conn.ManagedClientConnection} from the
     * {@link org.apache.http.conn.ClientConnectionManager}.
     * 
     * @param timeout the timeout in milliseconds
     */ 
    public static void setTimeout(final HttpParams params, long timeout) {
        if (params == null) {
            throw new IllegalArgumentException("HTTP parameters may not be null");
        }
        params.setLongParameter(TIMEOUT, timeout);
    }

    /** The default maximum number of connections allowed per host */
    private static final ConnPerRoute DEFAULT_CONN_PER_ROUTE = new ConnPerRoute() {
        
        public int getMaxForRoute(HttpRoute route) {
            return ConnPerRouteBean.DEFAULT_MAX_CONNECTIONS_PER_ROUTE;
        }
        
    };
    
    /**
     * Sets lookup interface for maximum number of connections allowed per route.
     *
     * @param params HTTP parameters
     * @param connPerRoute lookup interface for maximum number of connections allowed 
     *        per route
     * 
     * @see ConnManagerPNames#MAX_CONNECTIONS_PER_ROUTE
     */
    public static void setMaxConnectionsPerRoute(final HttpParams params,
                                                final ConnPerRoute connPerRoute) {
        if (params == null) {
            throw new IllegalArgumentException
                ("HTTP parameters must not be null.");
        }
        params.setParameter(MAX_CONNECTIONS_PER_ROUTE, connPerRoute);
    }

    /**
     * Returns lookup interface for maximum number of connections allowed per route.
     *
     * @param params HTTP parameters
     * 
     * @return lookup interface for maximum number of connections allowed per route.
     * 
     * @see ConnManagerPNames#MAX_CONNECTIONS_PER_ROUTE
     */
    public static ConnPerRoute getMaxConnectionsPerRoute(final HttpParams params) {
        if (params == null) {
            throw new IllegalArgumentException
                ("HTTP parameters must not be null.");
        }
        ConnPerRoute connPerRoute = (ConnPerRoute) params.getParameter(MAX_CONNECTIONS_PER_ROUTE);
        if (connPerRoute == null) {
            connPerRoute = DEFAULT_CONN_PER_ROUTE;
        }
        return connPerRoute;
    }


    /**
     * Sets the maximum number of connections allowed.
     *
     * @param params HTTP parameters
     * @param maxTotalConnections The maximum number of connections allowed.
     * 
     * @see ConnManagerPNames#MAX_TOTAL_CONNECTIONS
     */
    public static void setMaxTotalConnections(
            final HttpParams params,
            int maxTotalConnections) {
        if (params == null) {
            throw new IllegalArgumentException
                ("HTTP parameters must not be null.");
        }
        params.setIntParameter(MAX_TOTAL_CONNECTIONS, maxTotalConnections);
    }

    /**
     * Gets the maximum number of connections allowed.
     *
     * @param params HTTP parameters
     *
     * @return The maximum number of connections allowed.
     * 
     * @see ConnManagerPNames#MAX_TOTAL_CONNECTIONS
     */
    public static int getMaxTotalConnections(
            final HttpParams params) {
        if (params == null) {
            throw new IllegalArgumentException
                ("HTTP parameters must not be null.");
        }
        return params.getIntParameter(MAX_TOTAL_CONNECTIONS, DEFAULT_MAX_TOTAL_CONNECTIONS);
    }

    
}

Other Java examples (source code examples)

Here is a short list of links related to this Java ConnManagerParams.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.