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| 1 | +/* | |
| 2 | + * Copyright (c) 1996, 2004, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | +package java.rmi.server; | |
| 26 | + | |
| 27 | +import java.io.*; | |
| 28 | +import java.util.*; | |
| 29 | + | |
| 30 | +/** | |
| 31 | + * <code>LogStream</code> provides a mechanism for logging errors that are | |
| 32 | + * of possible interest to those monitoring a system. | |
| 33 | + * | |
| 34 | + * @author Ann Wollrath (lots of code stolen from Ken Arnold) | |
| 35 | + * @since JDK1.1 | |
| 36 | + * @deprecated no replacement | |
| 37 | + */ | |
| 38 | +@Deprecated | |
| 39 | +public class LogStream extends PrintStream { | |
| 40 | + | |
| 41 | + /** table mapping known log names to log stream objects */ | |
| 42 | + private static Hashtable known = new Hashtable(5); | |
| 43 | + /** default output stream for new logs */ | |
| 44 | + private static PrintStream defaultStream = System.err; | |
| 45 | + | |
| 46 | + /** log name for this log */ | |
| 47 | + private String name; | |
| 48 | + | |
| 49 | + /** stream where output of this log is sent to */ | |
| 50 | + private OutputStream logOut; | |
| 51 | + | |
| 52 | + /** string writer for writing message prefixes to log stream */ | |
| 53 | + private OutputStreamWriter logWriter; | |
| 54 | + | |
| 55 | + /** string buffer used for constructing log message prefixes */ | |
| 56 | + private StringBuffer buffer = new StringBuffer(); | |
| 57 | + | |
| 58 | + /** stream used for buffering lines */ | |
| 59 | + private ByteArrayOutputStream bufOut; | |
| 60 | + | |
| 61 | + /** | |
| 62 | + * Create a new LogStream object. Since this only constructor is | |
| 63 | + * private, users must have a LogStream created through the "log" | |
| 64 | + * method. | |
| 65 | + * @param name string identifying messages from this log | |
| 66 | + * @out output stream that log messages will be sent to | |
| 67 | + * @since JDK1.1 | |
| 68 | + * @deprecated no replacement | |
| 69 | + */ | |
| 70 | + @Deprecated | |
| 71 | + private LogStream(String name, OutputStream out) | |
| 72 | + { | |
| 73 | + super(new ByteArrayOutputStream()); | |
| 74 | + bufOut = (ByteArrayOutputStream) super.out; | |
| 75 | + | |
| 76 | + this.name = name; | |
| 77 | + setOutputStream(out); | |
| 78 | + } | |
| 79 | + | |
| 80 | + /** | |
| 81 | + * Return the LogStream identified by the given name. If | |
| 82 | + * a log corresponding to "name" does not exist, a log using | |
| 83 | + * the default stream is created. | |
| 84 | + * @param name name identifying the desired LogStream | |
| 85 | + * @return log associated with given name | |
| 86 | + * @since JDK1.1 | |
| 87 | + * @deprecated no replacement | |
| 88 | + */ | |
| 89 | + @Deprecated | |
| 90 | + public static LogStream log(String name) { | |
| 91 | + LogStream stream; | |
| 92 | + synchronized (known) { | |
| 93 | + stream = (LogStream)known.get(name); | |
| 94 | + if (stream == null) { | |
| 95 | + stream = new LogStream(name, defaultStream); | |
| 96 | + } | |
| 97 | + known.put(name, stream); | |
| 98 | + } | |
| 99 | + return stream; | |
| 100 | + } | |
| 101 | + | |
| 102 | + /** | |
| 103 | + * Return the current default stream for new logs. | |
| 104 | + * @return default log stream | |
| 105 | + * @see #setDefaultStream | |
| 106 | + * @since JDK1.1 | |
| 107 | + * @deprecated no replacement | |
| 108 | + */ | |
| 109 | + @Deprecated | |
| 110 | + public static synchronized PrintStream getDefaultStream() { | |
| 111 | + return defaultStream; | |
| 112 | + } | |
| 113 | + | |
| 114 | + /** | |
| 115 | + * Set the default stream for new logs. | |
| 116 | + * @param newDefault new default log stream | |
| 117 | + * @see #getDefaultStream | |
| 118 | + * @since JDK1.1 | |
| 119 | + * @deprecated no replacement | |
| 120 | + */ | |
| 121 | + @Deprecated | |
| 122 | + public static synchronized void setDefaultStream(PrintStream newDefault) { | |
| 123 | + defaultStream = newDefault; | |
| 124 | + } | |
| 125 | + | |
| 126 | + /** | |
| 127 | + * Return the current stream to which output from this log is sent. | |
| 128 | + * @return output stream for this log | |
| 129 | + * @see #setOutputStream | |
| 130 | + * @since JDK1.1 | |
| 131 | + * @deprecated no replacement | |
| 132 | + */ | |
| 133 | + @Deprecated | |
| 134 | + public synchronized OutputStream getOutputStream() | |
| 135 | + { | |
| 136 | + return logOut; | |
| 137 | + } | |
| 138 | + | |
| 139 | + /** | |
| 140 | + * Set the stream to which output from this log is sent. | |
| 141 | + * @param out new output stream for this log | |
| 142 | + * @see #getOutputStream | |
| 143 | + * @since JDK1.1 | |
| 144 | + * @deprecated no replacement | |
| 145 | + */ | |
| 146 | + @Deprecated | |
| 147 | + public synchronized void setOutputStream(OutputStream out) | |
| 148 | + { | |
| 149 | + logOut = out; | |
| 150 | + // Maintain an OutputStreamWriter with default CharToByteConvertor | |
| 151 | + // (just like new PrintStream) for writing log message prefixes. | |
| 152 | + logWriter = new OutputStreamWriter(logOut); | |
| 153 | + } | |
| 154 | + | |
| 155 | + /** | |
| 156 | + * Write a byte of data to the stream. If it is not a newline, then | |
| 157 | + * the byte is appended to the internal buffer. If it is a newline, | |
| 158 | + * then the currently buffered line is sent to the log's output | |
| 159 | + * stream, prefixed with the appropriate logging information. | |
| 160 | + * @since JDK1.1 | |
| 161 | + * @deprecated no replacement | |
| 162 | + */ | |
| 163 | + @Deprecated | |
| 164 | + public void write(int b) | |
| 165 | + { | |
| 166 | + if (b == '\n') { | |
| 167 | + // synchronize on "this" first to avoid potential deadlock | |
| 168 | + synchronized (this) { | |
| 169 | + synchronized (logOut) { | |
| 170 | + // construct prefix for log messages: | |
| 171 | + buffer.setLength(0);; | |
| 172 | + buffer.append( // date/time stamp... | |
| 173 | + (new Date()).toString()); | |
| 174 | + buffer.append(':'); | |
| 175 | + buffer.append(name); // ...log name... | |
| 176 | + buffer.append(':'); | |
| 177 | + buffer.append(Thread.currentThread().getName()); | |
| 178 | + buffer.append(':'); // ...and thread name | |
| 179 | + | |
| 180 | + try { | |
| 181 | + // write prefix through to underlying byte stream | |
| 182 | + logWriter.write(buffer.toString()); | |
| 183 | + logWriter.flush(); | |
| 184 | + | |
| 185 | + // finally, write the already converted bytes of | |
| 186 | + // the log message | |
| 187 | + bufOut.writeTo(logOut); | |
| 188 | + logOut.write(b); | |
| 189 | + logOut.flush(); | |
| 190 | + } catch (IOException e) { | |
| 191 | + setError(); | |
| 192 | + } finally { | |
| 193 | + bufOut.reset(); | |
| 194 | + } | |
| 195 | + } | |
| 196 | + } | |
| 197 | + } | |
| 198 | + else | |
| 199 | + super.write(b); | |
| 200 | + } | |
| 201 | + | |
| 202 | + /** | |
| 203 | + * Write a subarray of bytes. Pass each through write byte method. | |
| 204 | + * @since JDK1.1 | |
| 205 | + * @deprecated no replacement | |
| 206 | + */ | |
| 207 | + @Deprecated | |
| 208 | + public void write(byte b[], int off, int len) | |
| 209 | + { | |
| 210 | + if (len < 0) | |
| 211 | + throw new ArrayIndexOutOfBoundsException(len); | |
| 212 | + for (int i = 0; i < len; ++ i) | |
| 213 | + write(b[off + i]); | |
| 214 | + } | |
| 215 | + | |
| 216 | + /** | |
| 217 | + * Return log name as string representation. | |
| 218 | + * @return log name | |
| 219 | + * @since JDK1.1 | |
| 220 | + * @deprecated no replacement | |
| 221 | + */ | |
| 222 | + @Deprecated | |
| 223 | + public String toString() | |
| 224 | + { | |
| 225 | + return name; | |
| 226 | + } | |
| 227 | + | |
| 228 | + /** log level constant (no logging). */ | |
| 229 | + public static final int SILENT = 0; | |
| 230 | + /** log level constant (brief logging). */ | |
| 231 | + public static final int BRIEF = 10; | |
| 232 | + /** log level constant (verbose logging). */ | |
| 233 | + public static final int VERBOSE = 20; | |
| 234 | + | |
| 235 | + /** | |
| 236 | + * Convert a string name of a logging level to its internal | |
| 237 | + * integer representation. | |
| 238 | + * @param s name of logging level (e.g., 'SILENT', 'BRIEF', 'VERBOSE') | |
| 239 | + * @return corresponding integer log level | |
| 240 | + * @since JDK1.1 | |
| 241 | + * @deprecated no replacement | |
| 242 | + */ | |
| 243 | + @Deprecated | |
| 244 | + public static int parseLevel(String s) | |
| 245 | + { | |
| 246 | + if ((s == null) || (s.length() < 1)) | |
| 247 | + return -1; | |
| 248 | + | |
| 249 | + try { | |
| 250 | + return Integer.parseInt(s); | |
| 251 | + } catch (NumberFormatException e) { | |
| 252 | + } | |
| 253 | + if (s.length() < 1) | |
| 254 | + return -1; | |
| 255 | + | |
| 256 | + if ("SILENT".startsWith(s.toUpperCase())) | |
| 257 | + return SILENT; | |
| 258 | + else if ("BRIEF".startsWith(s.toUpperCase())) | |
| 259 | + return BRIEF; | |
| 260 | + else if ("VERBOSE".startsWith(s.toUpperCase())) | |
| 261 | + return VERBOSE; | |
| 262 | + | |
| 263 | + return -1; | |
| 264 | + } | |
| 265 | +} | |