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1: /* Simple1LineFormatter.java -- A simple 1-line logging formatter 2: Copyright (C) 2006 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package gnu.classpath.debug; 40: 41: import gnu.java.security.action.GetPropertyAction; 42: 43: import java.io.PrintWriter; 44: import java.io.StringWriter; 45: import java.security.AccessController; 46: import java.text.DateFormat; 47: import java.text.DecimalFormat; 48: import java.text.NumberFormat; 49: import java.text.SimpleDateFormat; 50: import java.util.Date; 51: import java.util.logging.Formatter; 52: import java.util.logging.LogRecord; 53: 54: /** 55: * A simple 1-line formatter to use instead of the 2-line SimpleFormatter used 56: * by default in the JDK logging handlers. 57: * <p> 58: * The fixed format of this formatter is as follows: 59: * <p> 60: * <ol> 61: * <li>Date: As a yyyy-MM-dd string.</li> 62: * <li>Time: As a HH:mm:ss.SSSS Z string.</li> 63: * <li>Thread identifier, right-justified, and framed in an 11-digit field.</li> 64: * <li>Class name, without its package name, left-justified, and framed in a 65: * 32-character field.</li> 66: * <li>Method name, left-justified, and framed in a 32-character field.</li> 67: * <li>Level name, left-justified, and framed in a 6-character field.</li> 68: * <li>User message and arguments.</li> 69: * <li>Platform-dependent line-separator.</li> 70: * <li>Optionally, if the log-record contains a thrown exception, that 71: * exception's stack trace is appended to the output.</li> 72: * </ol> 73: * <p> 74: * Here is an example of the output generated by this formatter: 75: * <p> 76: * <pre> 77: * 2006-02-27 21:59:12.0881 +1100 -1343151280 EncodedKeyFactory engineGeneratePublic() FINER - ENTRY java.security.spec.X509EncodedKeySpec@b00d7fc0 78: * 2006-02-27 21:59:12.0887 +1100 -1343151280 EncodedKeyFactory engineGeneratePublic() FINE - Exception in DSSPublicKey.valueOf(). Ignore 79: * java.security.InvalidParameterException: Unexpected OID: 1.2.840.113549.1.1.1 80: * at gnu.java.security.key.dss.DSSKeyPairX509Codec.decodePublicKey (DSSKeyPairX509Codec.java:205) 81: * at gnu.java.security.key.dss.DSSPublicKey.valueOf (DSSPublicKey.java:136) 82: * at gnu.java.security.jce.sig.EncodedKeyFactory.engineGeneratePublic (EncodedKeyFactory.java:218) 83: * at java.security.KeyFactory.generatePublic (KeyFactory.java:219) 84: * at gnu.java.security.x509.X509Certificate.parse (X509Certificate.java:657) 85: * at gnu.java.security.x509.X509Certificate.<init> (X509Certificate.java:163) 86: * ... 87: * 2006-02-27 21:59:12.0895 +1100 -1343151280 RSAKeyPairX509Codec decodePublicKey() FINER - ENTRY [B@b00d7fd0 88: * 2006-02-27 21:59:12.0897 +1100 -1343151280 RSAKeyPairX509Codec decodePublicKey() FINER - RETURN gnu.java.security.key.rsa.GnuRSAPublicKey@b00fb940 89: * </pre> 90: */ 91: public class Simple1LineFormatter 92: extends Formatter 93: { 94: private static final String DAT_PATTERN = "yyyy-MM-dd HH:mm:ss.SSSS Z "; 95: private static final String THREAD_PATTERN = " #########0;-#########0"; 96: private static final String SPACES_32 = " "; 97: private static final String SPACES_6 = " "; 98: private static final String LS = (String) AccessController.doPrivileged 99: (new GetPropertyAction("line.separator")); 100: private DateFormat dateFormat; 101: private NumberFormat threadFormat; 102: 103: // default 0-arguments constructor 104: 105: public String format(LogRecord record) 106: { 107: if (dateFormat == null) 108: dateFormat = new SimpleDateFormat(DAT_PATTERN); 109: 110: if (threadFormat == null) 111: threadFormat = new DecimalFormat(THREAD_PATTERN); 112: 113: StringBuilder sb = new StringBuilder(180) 114: .append(dateFormat.format(new Date(record.getMillis()))) 115: .append(threadFormat.format(record.getThreadID())) 116: .append(" "); 117: String s = record.getSourceClassName(); 118: if (s == null) 119: sb.append(SPACES_32); 120: else 121: { 122: s = s.trim(); 123: int i = s.lastIndexOf("."); 124: if (i != - 1) 125: s = s.substring(i + 1); 126: 127: s = (s + SPACES_32).substring(0, 32); 128: } 129: 130: sb.append(s).append(" "); 131: s = record.getSourceMethodName(); 132: if (s == null) 133: sb.append(SPACES_32); 134: else 135: { 136: s = s.trim(); 137: if (s.endsWith("()")) 138: s = (s.trim() + SPACES_32).substring(0, 32); 139: else 140: s = (s.trim() + "()" + SPACES_32).substring(0, 32); 141: } 142: 143: sb.append(s).append(" "); 144: s = String.valueOf(record.getLevel()); 145: if (s == null) 146: sb.append(SPACES_6); 147: else 148: s = (s.trim() + SPACES_6).substring(0, 6); 149: 150: sb.append(s).append(" - ").append(formatMessage(record)).append(LS); 151: Throwable cause = record.getThrown(); 152: if (cause != null) 153: { 154: StringWriter sw = new StringWriter(); 155: cause.printStackTrace(new PrintWriter(sw, true)); 156: sb.append(sw.toString()); 157: } 158: 159: return sb.toString(); 160: } 161: }