001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.fileupload2.core;
019
020import java.util.Objects;
021import java.util.function.Function;
022import java.util.function.LongSupplier;
023
024public abstract class AbstractRequestContext<T> implements RequestContext {
025
026    /**
027     * Supplies the content length default.
028     */
029    private final LongSupplier contentLengthDefault;
030
031    /**
032     * Supplies the content length string.
033     */
034    private final Function<String, String> contentLengthString;
035
036    /**
037     * The request.
038     */
039    private final T request;
040
041    /**
042     * Constructs a new instance.
043     *
044     * @param contentLengthString  How to get the content length string.
045     * @param contentLengthDefault How to get the content length default.
046     * @param request              The request.
047     */
048    protected AbstractRequestContext(final Function<String, String> contentLengthString, final LongSupplier contentLengthDefault, final T request) {
049        this.contentLengthString = Objects.requireNonNull(contentLengthString, "contentLengthString");
050        this.contentLengthDefault = Objects.requireNonNull(contentLengthDefault, "contentLengthDefault");
051        this.request = Objects.requireNonNull(request, "request");
052    }
053
054    /**
055     * Gets the content length of the request.
056     *
057     * @return The content length of the request.
058     */
059    @Override
060    public long getContentLength() {
061        try {
062            return Long.parseLong(contentLengthString.apply(AbstractFileUpload.CONTENT_LENGTH));
063        } catch (final NumberFormatException e) {
064            return contentLengthDefault.getAsLong();
065        }
066    }
067
068    public T getRequest() {
069        return request;
070    }
071
072    /**
073     * Returns a string representation of this object.
074     *
075     * @return a string representation of this object.
076     */
077    @Override
078    public String toString() {
079        return String.format("%s [ContentLength=%s, ContentType=%s]", getClass().getSimpleName(), getContentLength(), getContentType());
080    }
081
082}