/* * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.net.www.protocol.http.logging; import java.util.logging.LogRecord;import java.util.regex.*; /** * A Formatter to make the HTTP logs a bit more palatable to the developer * looking at them. The idea is to present the HTTP events in such a way that * commands and headers are easily spotted (i.e. on separate lines). * @author jccollet */public class HttpLogFormatter extends java.util.logging.SimpleFormatter {    // Pattern for MessageHeader data. Mostly pairs within curly brackets    private static volatile Pattern pattern = null;    // Pattern for Cookies    private static volatile Pattern cpattern = null;     public HttpLogFormatter() {        if (pattern == null) {            pattern = Pattern.compile("\\{[^\\}]*\\}");            cpattern = Pattern.compile("[^,\\] ]{2,}");        }    }     @Override    public String format(LogRecord record) {        String sourceClassName = record.getSourceClassName();        if (sourceClassName == null ||            !(sourceClassName.startsWith("sun.net.www.protocol.http") ||              sourceClassName.startsWith("sun.net.www.http"))) {            return super.format(record);        }        String src = record.getMessage();        StringBuilder buf = new StringBuilder("HTTP: ");        if (src.startsWith("sun.net.www.MessageHeader@")) {            // MessageHeader logs are composed of pairs within curly brackets            // Let's extract them to make it more readable. That way we get one            // header pair (name, value) per line. A lot easier to read.            Matcher match = pattern.matcher(src);            while (match.find()) {                int i = match.start();                int j = match.end();                String s = src.substring(i + 1, j - 1);                if (s.startsWith("null: ")) {                    s = s.substring(6);                }                if (s.endsWith(": null")) {                    s = s.substring(0, s.length() - 6);                }                buf.append("\t").append(s).append("\n");            }        } else if (src.startsWith("Cookies retrieved: {")) {            // This comes from the Cookie handler, let's clean up the format a bit            String s = src.substring(20);            buf.append("Cookies from handler:\n");            while (s.length() >= 7) {                if (s.startsWith("Cookie=[")) {                    String s2 = s.substring(8);                    int c = s2.indexOf("Cookie2=[");                    if (c > 0) {                        s2 = s2.substring(0, c-1);                        s = s2.substring(c);                    } else {                        s = "";                    }                    if (s2.length() < 4) {                        continue;                    }                    Matcher m = cpattern.matcher(s2);                    while (m.find()) {                        int i = m.start();                        int j = m.end();                        if (i >= 0) {                            String cookie = s2.substring(i + 1, j > 0 ? j - 1 : s2.length() - 1);                            buf.append("\t").append(cookie).append("\n");                        }                    }                }                if (s.startsWith("Cookie2=[")) {                    String s2 = s.substring(9);                    int c = s2.indexOf("Cookie=[");                    if (c > 0) {                        s2 = s2.substring(0, c-1);                        s = s2.substring(c);                    } else {                        s = "";                    }                    Matcher m = cpattern.matcher(s2);                    while (m.find()) {                        int i = m.start();                        int j = m.end();                        if (i >= 0) {                            String cookie = s2.substring(i+1, j > 0 ? j-1 : s2.length() - 1);                            buf.append("\t").append(cookie).append("\n");                        }                    }                }            }        } else {            // Anything else we let as is.            buf.append(src).append("\n");        }        return buf.toString();    } }