OpenStack Study: messages.py

**** CubicPower OpenStack Study ****

def add_message(request, level, message, extra_tags='', fail_silently=False):

    """Attempts to add a message to the request using the 'messages' app."""

    if request.is_ajax():

        tag = constants.DEFAULT_TAGS[level]

        # if message is marked as safe, pass "safe" tag as extra_tags so that

        # client can skip HTML escape for the message when rendering

        if isinstance(message, SafeData):

            extra_tags = extra_tags + ' safe'

        request.horizon['async_messages'].append([tag,

                                                  force_unicode(message),

                                                  extra_tags])

    else:

        return _messages.add_message(request, level, message,

                                     extra_tags, fail_silently)

**** CubicPower OpenStack Study ****

def debug(request, message, extra_tags='', fail_silently=False):

    """Adds a message with the ``DEBUG`` level."""

    add_message(request, constants.DEBUG, message, extra_tags=extra_tags,

                fail_silently=fail_silently)

**** CubicPower OpenStack Study ****

def info(request, message, extra_tags='', fail_silently=False):

    """Adds a message with the ``INFO`` level."""

    add_message(request, constants.INFO, message, extra_tags=extra_tags,

                fail_silently=fail_silently)

**** CubicPower OpenStack Study ****

def success(request, message, extra_tags='', fail_silently=False):

    """Adds a message with the ``SUCCESS`` level."""

    add_message(request, constants.SUCCESS, message, extra_tags=extra_tags,

                fail_silently=fail_silently)

**** CubicPower OpenStack Study ****

def warning(request, message, extra_tags='', fail_silently=False):

    """Adds a message with the ``WARNING`` level."""

    add_message(request, constants.WARNING, message, extra_tags=extra_tags,

                fail_silently=fail_silently)

**** CubicPower OpenStack Study ****

def error(request, message, extra_tags='', fail_silently=False):

    """Adds a message with the ``ERROR`` level."""

    add_message(request, constants.ERROR, message, extra_tags=extra_tags,

                fail_silently=fail_silently)