/**
 * 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.
 */

package org.apache.jena.fuseki.server;

import java.util.concurrent.atomic.AtomicLong ;

import org.apache.jena.fuseki.servlets.HttpAction ;


/** A name in the URL space of the server */
public class DataAccessPoint {
    private final String name ;
    private final DataService dataService ;
    private AtomicLong requests = new AtomicLong(0) ;
    
    public DataAccessPoint(String name, DataService dataService) {
        this.name = canonical(name) ;
        this.dataService = dataService ;
    }
    
    public String getName()     { return name ; }
    
    public static String canonical(String datasetPath) {
        if ( datasetPath == null )
            return datasetPath ;
        if ( datasetPath.equals("/") )
            datasetPath = "" ;
        else
            if ( !datasetPath.startsWith("/") )
                datasetPath = "/" + datasetPath ;
        if ( datasetPath.endsWith("/") )
            datasetPath = datasetPath.substring(0, datasetPath.length() - 1) ;
        return datasetPath ;
    }

    public DataService getDataService() {
        return dataService;
    }

    public long requestCount()                          { return requests.get() ; }
    
    public void startRequest(HttpAction httpAction)     { requests.incrementAndGet() ; }

    public void finishRequest(HttpAction httpAction)    { requests.getAndDecrement() ; }
}