Source Code Cross Referenced for LogMessage.java in  » Net » james-2.3.1 » org » apache » james » transport » mailets » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » james 2.3.1 » org.apache.james.transport.mailets 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /****************************************************************
002:         * Licensed to the Apache Software Foundation (ASF) under one   *
003:         * or more contributor license agreements.  See the NOTICE file *
004:         * distributed with this work for additional information        *
005:         * regarding copyright ownership.  The ASF licenses this file   *
006:         * to you under the Apache License, Version 2.0 (the            *
007:         * "License"); you may not use this file except in compliance   *
008:         * with the License.  You may obtain a copy of the License at   *
009:         *                                                              *
010:         *   http://www.apache.org/licenses/LICENSE-2.0                 *
011:         *                                                              *
012:         * Unless required by applicable law or agreed to in writing,   *
013:         * software distributed under the License is distributed on an  *
014:         * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
015:         * KIND, either express or implied.  See the License for the    *
016:         * specific language governing permissions and limitations      *
017:         * under the License.                                           *
018:         ****************************************************************/package org.apache.james.transport.mailets;
019:
020:        import java.util.Enumeration;
021:        import javax.mail.MessagingException;
022:        import javax.mail.internet.MimeMessage;
023:
024:        import org.apache.james.core.MailImpl;
025:        import org.apache.mailet.GenericMailet;
026:        import org.apache.mailet.Mail;
027:
028:        import java.io.InputStream;
029:        import java.lang.StringBuffer;
030:
031:        /**
032:         * Logs Message Headers and/or Body.
033:         * If the "passThrough" in confs is true the mail will be left untouched in
034:         * the pipe. If false will be destroyed.  Default is true.
035:         *
036:         * @version This is $Revision: 1.8.4.2 $
037:         */
038:        public class LogMessage extends GenericMailet {
039:
040:            /**
041:             * Whether this mailet should allow mails to be processed by additional mailets
042:             * or mark it as finished.
043:             */
044:            private boolean passThrough = true;
045:            private boolean headers = true;
046:            private boolean body = true;
047:            private int bodyMax = 0;
048:            private String comment = null;
049:
050:            /**
051:             * Initialize the mailet, loading configuration information.
052:             */
053:            public void init() {
054:                try {
055:                    passThrough = (getInitParameter("passThrough") == null) ? true
056:                            : new Boolean(getInitParameter("passThrough"))
057:                                    .booleanValue();
058:                    headers = (getInitParameter("headers") == null) ? true
059:                            : new Boolean(getInitParameter("headers"))
060:                                    .booleanValue();
061:                    body = (getInitParameter("body") == null) ? true
062:                            : new Boolean(getInitParameter("body"))
063:                                    .booleanValue();
064:                    bodyMax = (getInitParameter("maxBody") == null) ? 0
065:                            : Integer.parseInt(getInitParameter("maxBody"));
066:                    comment = getInitParameter("comment");
067:                } catch (Exception e) {
068:                    // Ignore exception, default to true
069:                }
070:            }
071:
072:            /**
073:             * Log a particular message
074:             *
075:             * @param mail the mail to process
076:             */
077:            public void service(Mail genericmail) {
078:                MailImpl mail = (MailImpl) genericmail;
079:                log(new StringBuffer(160).append("Logging mail ").append(
080:                        mail.getName()).toString());
081:                if (comment != null)
082:                    log(comment);
083:                try {
084:                    if (headers)
085:                        log(getMessageHeaders(mail.getMessage()));
086:                    if (body) {
087:                        int len = bodyMax > 0 ? bodyMax : mail.getMessage()
088:                                .getSize();
089:                        StringBuffer text = new StringBuffer(len);
090:                        InputStream is = mail.getMessage().getRawInputStream();
091:                        byte[] buf = new byte[1024];
092:                        int read = 0;
093:                        while (text.length() < len
094:                                && (read = is.read(buf)) > -1) {
095:                            text.append(new String(buf, 0, Math.min(read, len
096:                                    - text.length())));
097:                        }
098:                        log(text.toString());
099:                    }
100:                } catch (MessagingException e) {
101:                    log("Error logging message.", e);
102:                } catch (java.io.IOException e) {
103:                    log("Error logging message.", e);
104:                }
105:                if (!passThrough) {
106:                    mail.setState(Mail.GHOST);
107:                }
108:            }
109:
110:            /**
111:             * Utility method for obtaining a string representation of a
112:             * Message's headers
113:             */
114:            private String getMessageHeaders(MimeMessage message)
115:                    throws MessagingException {
116:                Enumeration heads = message.getAllHeaderLines();
117:                StringBuffer headBuffer = new StringBuffer(1024).append("\n");
118:                while (heads.hasMoreElements()) {
119:                    headBuffer.append(heads.nextElement().toString()).append(
120:                            "\n");
121:                }
122:                return headBuffer.toString();
123:            }
124:
125:            /**
126:             * Return a string describing this mailet.
127:             *
128:             * @return a string describing this mailet
129:             */
130:            public String getMailetInfo() {
131:                return "LogHeaders Mailet";
132:            }
133:        }
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