| /* |
| * ==================================================================== |
| * 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.client5.http.impl; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.hc.core5.annotation.Internal; |
| import org.apache.hc.core5.util.Args; |
| import org.slf4j.Logger; |
| |
| @Internal |
| public class Wire { |
| |
| private static final int MAX_STRING_BUILDER_SIZE = 2048; |
| |
| private static final ThreadLocal<StringBuilder> THREAD_LOCAL = new ThreadLocal<>(); |
| |
| /** |
| * Returns a {@code StringBuilder} that this Layout implementation can use to write the formatted log event to. |
| * |
| * @return a {@code StringBuilder} |
| */ |
| private static StringBuilder getStringBuilder() { |
| StringBuilder result = THREAD_LOCAL.get(); |
| if (result == null) { |
| result = new StringBuilder(MAX_STRING_BUILDER_SIZE); |
| THREAD_LOCAL.set(result); |
| } |
| trimToMaxSize(result, MAX_STRING_BUILDER_SIZE); |
| result.setLength(0); |
| return result; |
| } |
| |
| /** |
| * Ensures that the char[] array of the specified StringBuilder does not exceed the specified number of characters. |
| * This method is useful to ensure that excessively long char[] arrays are not kept in memory forever. |
| * |
| * @param stringBuilder the StringBuilder to check |
| * @param maxSize the maximum number of characters the StringBuilder is allowed to have |
| */ |
| private static void trimToMaxSize(final StringBuilder stringBuilder, final int maxSize) { |
| if (stringBuilder != null && stringBuilder.capacity() > maxSize) { |
| stringBuilder.setLength(maxSize); |
| stringBuilder.trimToSize(); |
| } |
| } |
| |
| private final Logger log; |
| private final String id; |
| |
| public Wire(final Logger log, final String id) { |
| super(); |
| this.log = log; |
| this.id = id; |
| } |
| |
| private void wire(final String header, final byte[] b, final int pos, final int off) { |
| final StringBuilder buffer = getStringBuilder(); |
| for (int i = 0; i < off; i++) { |
| final int ch = b[pos + i]; |
| if (ch == 13) { |
| buffer.append("[\\r]"); |
| } else if (ch == 10) { |
| buffer.append("[\\n]\""); |
| buffer.insert(0, "\""); |
| buffer.insert(0, header); |
| log.debug("{} {}", this.id, buffer); |
| buffer.setLength(0); |
| } else if ((ch < 32) || (ch >= 127)) { |
| buffer.append("[0x"); |
| buffer.append(Integer.toHexString(ch)); |
| buffer.append("]"); |
| } else { |
| buffer.append((char) ch); |
| } |
| } |
| if (buffer.length() > 0) { |
| buffer.append('\"'); |
| buffer.insert(0, '\"'); |
| buffer.insert(0, header); |
| log.debug("{} {}", this.id, buffer); |
| } |
| } |
| |
| |
| public boolean isEnabled() { |
| return log.isDebugEnabled(); |
| } |
| |
| public void output(final byte[] b, final int pos, final int off) { |
| Args.notNull(b, "Output"); |
| wire(">> ", b, pos, off); |
| } |
| |
| public void input(final byte[] b, final int pos, final int off) { |
| Args.notNull(b, "Input"); |
| wire("<< ", b, pos, off); |
| } |
| |
| public void output(final byte[] b) { |
| Args.notNull(b, "Output"); |
| output(b, 0, b.length); |
| } |
| |
| public void input(final byte[] b) { |
| Args.notNull(b, "Input"); |
| input(b, 0, b.length); |
| } |
| |
| public void output(final int b) { |
| output(new byte[] {(byte) b}); |
| } |
| |
| public void input(final int b) { |
| input(new byte[] {(byte) b}); |
| } |
| |
| public void output(final String s) { |
| Args.notNull(s, "Output"); |
| output(s.getBytes()); |
| } |
| |
| public void input(final String s) { |
| Args.notNull(s, "Input"); |
| input(s.getBytes()); |
| } |
| |
| public void output(final ByteBuffer b) { |
| Args.notNull(b, "Output"); |
| if (b.hasArray()) { |
| output(b.array(), b.arrayOffset() + b.position(), b.remaining()); |
| } else { |
| final byte[] tmp = new byte[b.remaining()]; |
| b.get(tmp); |
| output(tmp); |
| } |
| } |
| |
| public void input(final ByteBuffer b) { |
| Args.notNull(b, "Input"); |
| if (b.hasArray()) { |
| input(b.array(), b.arrayOffset() + b.position(), b.remaining()); |
| } else { |
| final byte[] tmp = new byte[b.remaining()]; |
| b.get(tmp); |
| input(tmp); |
| } |
| } |
| |
| } |