LogMessage class

public ianywhere.ml.script.LogMessage

Holds the data associated with a log message.

Extends java.lang.Object.

Handling MobiLink server errors in Java

All members of ianywhere.ml.script.LogMessage, including all inherited members.

The following example installs a LogListener for all warning, error, and info messages, then writes the information to a file.

The following code installs a LogListener for all warning messages.

class WarningLogListener implements LogListener {
    FileOutputStream _outFile; 

    public WarningLogListener(FileOutputStream outFile) {
        _outFile = outFile;
    }

    public void messageLogged(ServerContext sc, LogMessage msg) {
        String user;

        try {
            if (msg.getType() != LogMessage.WARNING) {
                //this class deals exclusively with warnings
                return;
            }
            user = msg.getUser();

            if (user == null) {
                user = "NULL";
            }

            _outFile.write(("Caught warning"
                + " user=" + user
                + " text=" + msg.getText()
                + "\n").getBytes()
            );
            _outFile.flush();
        }
        catch(Exception e) {
            // Print some error output to the MobiLink log.
            e.printStackTrace();
        }
    }
}

The following code installs a LogListener for all error messages.

class ErrorLogListener implements LogListener {
    FileOutputStream _outFile; 

    public ErrorLogListener(FileOutputStream outFile) {
        _outFile = outFile;
    }

    public void messageLogged(ServerContext sc, LogMessage msg) {
        String user;

        try {
            if (msg.getType() != LogMessage.ERROR) {
                //this class deals exclusively with errors
                return;
            }

            user = msg.getUser();
            if (user == null) {
                user = "NULL";
            }

            _outFile.write(("Caught error"
                    + " user=" + user
                    + " text=" + msg.getText()
                    + "\n").getBytes()
            );
            _outFile.flush();
        }
        catch(Exception e) {
            // Print some error output to the MobiLink log.
            e.printStackTrace();
        }
    }
}

The following code installs a LogListener for all info messages.

class InfoLogListener implements LogListener {
    FileOutputStream _outFile; 

    public InfoLogListener(FileOutputStream outFile) {
        _outFile = outFile;
    }

    public void messageLogged(ServerContext sc, LogMessage msg) {
        String user;

        try {
            if (msg.getType() != LogMessage.INFO) {
                // this class deals exclusively with info
                return;
            }

            user = msg.getUser();
            if (user == null) {
                user = "NULL";
            }

            _outFile.write(("Caught info"
                    + " user=" + user
                    + " text=" + msg.getText()
                    + "\n").getBytes()
            );
            _outFile.flush();
        }
        catch(Exception e) {
            // Print some error output to the MobiLink log.
            e.printStackTrace();
        }
    }
}

The following code registers WarningLogListener, ErrorLogListener, and InfoLogListener to receive warning, error, and info messages respectively. Call this code from anywhere that has access to the ServerContext such as a class constructor or synchronization script.

// ServerContext serv_context;
// FileOutputStream outFile
serv_context.addWarningListener(new WarningLogListener(outFile));
serv_context.addErrorListener(new ErrorLogListener(outFile));
serv_context.addInfoListener(new InfoLogListener(outFile));

LogMessage class

Syntax

Remarks

See also

Members

Example