/** * Process this mail message by the appropriate processor as designated in the state of the Mail * object. * * @param mail the mail message to be processed */ protected void process(Mail mail) { while (true) { String processorName = mail.getState(); if (processorName.equals(Mail.GHOST)) { // This message should disappear return; } try { LinearProcessor processor = (LinearProcessor) processors.get(processorName); if (processor == null) { StringBuffer exceptionMessageBuffer = new StringBuffer(128) .append("Unable to find processor ") .append(processorName) .append(" requested for processing of ") .append(mail.getName()); String exceptionMessage = exceptionMessageBuffer.toString(); getLogger().debug(exceptionMessage); mail.setState(Mail.ERROR); throw new MailetException(exceptionMessage); } StringBuffer logMessageBuffer = null; if (getLogger().isDebugEnabled()) { logMessageBuffer = new StringBuffer(64) .append("Processing ") .append(mail.getName()) .append(" through ") .append(processorName); getLogger().debug(logMessageBuffer.toString()); } processor.service(mail); if (getLogger().isDebugEnabled()) { logMessageBuffer = new StringBuffer(128) .append("Processed ") .append(mail.getName()) .append(" through ") .append(processorName); getLogger().debug(logMessageBuffer.toString()); getLogger().debug("Result was " + mail.getState()); } return; } catch (Throwable e) { // This is a strange error situation that shouldn't ordinarily // happen StringBuffer exceptionBuffer = new StringBuffer(64) .append("Exception in processor <") .append(processorName) .append(">"); getLogger().error(exceptionBuffer.toString(), e); if (processorName.equals(Mail.ERROR)) { // We got an error on the error processor... // kill the message mail.setState(Mail.GHOST); mail.setErrorMessage(e.getMessage()); } else { // We got an error... send it to the requested processor if (!(e instanceof MessagingException)) { // We got an error... send it to the error processor mail.setState(Mail.ERROR); } mail.setErrorMessage(e.getMessage()); } } if (getLogger().isErrorEnabled()) { StringBuffer logMessageBuffer = new StringBuffer(128) .append("An error occurred processing ") .append(mail.getName()) .append(" through ") .append(processorName); getLogger().error(logMessageBuffer.toString()); getLogger().error("Result was " + mail.getState()); } } }