| /* |
| * ==================================================================== |
| * 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.hc.core5.http.nio.entity; |
| |
| import java.io.IOException; |
| import java.nio.CharBuffer; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.apache.hc.core5.http.ContentType; |
| import org.apache.hc.core5.http.nio.StreamChannel; |
| import org.apache.hc.core5.util.Args; |
| import org.apache.hc.core5.util.Asserts; |
| |
| /** |
| * Basic {@link org.apache.hc.core5.http.nio.AsyncDataProducer} implementation that |
| * generates data stream from content of a string. |
| * |
| * @since 5.0 |
| */ |
| public class StringAsyncEntityProducer extends AbstractCharAsyncEntityProducer { |
| |
| private final CharBuffer content; |
| private final AtomicReference<Exception> exception; |
| |
| public StringAsyncEntityProducer( |
| final CharSequence content, |
| final int bufferSize, |
| final int fragmentSizeHint, |
| final ContentType contentType) { |
| super(bufferSize, fragmentSizeHint, contentType); |
| Args.notNull(content, "Content"); |
| this.content = CharBuffer.wrap(content); |
| this.exception = new AtomicReference<>(null); |
| } |
| |
| public StringAsyncEntityProducer(final CharSequence content, final int bufferSize, final ContentType contentType) { |
| this(content, bufferSize, -1, contentType); |
| } |
| |
| public StringAsyncEntityProducer(final CharSequence content, final ContentType contentType) { |
| this(content, 4096, contentType); |
| } |
| |
| public StringAsyncEntityProducer(final CharSequence content) { |
| this(content, ContentType.TEXT_PLAIN); |
| } |
| |
| @Override |
| public boolean isRepeatable() { |
| return true; |
| } |
| |
| @Override |
| protected int availableData() { |
| return Integer.MAX_VALUE; |
| } |
| |
| @Override |
| protected void produceData(final StreamChannel<CharBuffer> channel) throws IOException { |
| Asserts.notNull(channel, "Channel"); |
| channel.write(content); |
| if (!content.hasRemaining()) { |
| channel.endStream(); |
| } |
| } |
| |
| @Override |
| public void failed(final Exception cause) { |
| if (exception.compareAndSet(null, cause)) { |
| releaseResources(); |
| } |
| } |
| |
| public Exception getException() { |
| return exception.get(); |
| } |
| |
| @Override |
| public void releaseResources() { |
| this.content.clear(); |
| super.releaseResources(); |
| } |
| |
| } |