J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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 | } |