| /* |
| * ==================================================================== |
| * 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.manifoldcf.agents.output.solr; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.nio.charset.Charset; |
| import java.util.Random; |
| |
| import org.apache.http.Header; |
| import org.apache.http.HttpEntity; |
| import org.apache.http.entity.mime.content.ContentBody; |
| import org.apache.http.entity.mime.FormBodyPart; |
| import org.apache.http.entity.mime.HttpMultipartMode; |
| import org.apache.http.entity.mime.MIME; |
| import org.apache.http.message.BasicHeader; |
| import org.apache.http.protocol.HTTP; |
| |
| /** |
| * Multipart/form coded HTTP entity consisting of multiple body parts. |
| * |
| * @since 4.0 |
| */ |
| public class ModifiedMultipartEntity implements HttpEntity { |
| |
| /** |
| * The pool of ASCII chars to be used for generating a multipart boundary. |
| */ |
| private final static char[] MULTIPART_CHARS = |
| "-_1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| .toCharArray(); |
| |
| private final ModifiedHttpMultipart multipart; |
| private final Header contentType; |
| |
| // @GuardedBy("dirty") // we always read dirty before accessing length |
| private long length; |
| private volatile boolean dirty; // used to decide whether to recalculate length |
| |
| /** |
| * Creates an instance using the specified parameters |
| * @param mode the mode to use, may be {@code null}, in which case {@link HttpMultipartMode#STRICT} is used |
| * @param boundary the boundary string, may be {@code null}, in which case {@link #generateBoundary()} is invoked to create the string |
| * @param charset the character set to use, may be {@code null}, in which case {@link MIME#DEFAULT_CHARSET} - i.e. US-ASCII - is used. |
| */ |
| public ModifiedMultipartEntity( |
| HttpMultipartMode mode, |
| String boundary, |
| Charset charset) { |
| super(); |
| if (boundary == null) { |
| boundary = generateBoundary(); |
| } |
| if (mode == null) { |
| mode = HttpMultipartMode.STRICT; |
| } |
| this.multipart = new ModifiedHttpMultipart("form-data", charset, boundary, mode); |
| this.contentType = new BasicHeader( |
| HTTP.CONTENT_TYPE, |
| generateContentType(boundary, charset)); |
| this.dirty = true; |
| } |
| |
| /** |
| * Creates an instance using the specified {@link HttpMultipartMode} mode. |
| * Boundary and charset are set to {@code null}. |
| * @param mode the desired mode |
| */ |
| public ModifiedMultipartEntity(final HttpMultipartMode mode) { |
| this(mode, null, null); |
| } |
| |
| /** |
| * Creates an instance using mode {@link HttpMultipartMode#STRICT} |
| */ |
| public ModifiedMultipartEntity() { |
| this(HttpMultipartMode.STRICT, null, null); |
| } |
| |
| protected String generateContentType( |
| final String boundary, |
| final Charset charset) { |
| StringBuilder buffer = new StringBuilder(); |
| buffer.append("multipart/form-data; boundary="); |
| buffer.append(boundary); |
| if (charset != null) { |
| buffer.append("; charset="); |
| buffer.append(charset.name()); |
| } |
| return buffer.toString(); |
| } |
| |
| protected String generateBoundary() { |
| StringBuilder buffer = new StringBuilder(); |
| Random rand = new Random(); |
| int count = rand.nextInt(11) + 30; // a random size from 30 to 40 |
| for (int i = 0; i < count; i++) { |
| buffer.append(MULTIPART_CHARS[rand.nextInt(MULTIPART_CHARS.length)]); |
| } |
| return buffer.toString(); |
| } |
| |
| public void addPart(final FormBodyPart bodyPart) { |
| this.multipart.addBodyPart(bodyPart); |
| this.dirty = true; |
| } |
| |
| public void addPart(final String name, final ContentBody contentBody) { |
| addPart(new FormBodyPart(name, contentBody)); |
| } |
| |
| public boolean isRepeatable() { |
| for (FormBodyPart part: this.multipart.getBodyParts()) { |
| ContentBody body = part.getBody(); |
| if (body.getContentLength() < 0) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public boolean isChunked() { |
| return !isRepeatable(); |
| } |
| |
| public boolean isStreaming() { |
| return !isRepeatable(); |
| } |
| |
| public long getContentLength() { |
| if (this.dirty) { |
| this.length = this.multipart.getTotalLength(); |
| this.dirty = false; |
| } |
| return this.length; |
| } |
| |
| public Header getContentType() { |
| return this.contentType; |
| } |
| |
| public Header getContentEncoding() { |
| return null; |
| } |
| |
| public void consumeContent() |
| throws IOException, UnsupportedOperationException{ |
| if (isStreaming()) { |
| throw new UnsupportedOperationException( |
| "Streaming entity does not implement #consumeContent()"); |
| } |
| } |
| |
| public InputStream getContent() throws IOException, UnsupportedOperationException { |
| throw new UnsupportedOperationException( |
| "Multipart form entity does not implement #getContent()"); |
| } |
| |
| public void writeTo(final OutputStream outstream) throws IOException { |
| this.multipart.writeTo(outstream); |
| } |
| |
| } |