Reorganization.

Create a Mailman.chains package and move a bunch of the Mailman.apps.chains
classes to separate modules under this package.

Also, separate out iteration from chain management.  In other words, IChain
and IChainIterator are separate, and the latter is retrieved from the former
by the .get_links() method.  This latter takes the mailing list, message, and
metadata dictionary so that links can be targetted specifically to the task at
hand.

1 files changed, 43 insertions, 0 deletions

diff --git a/Mailman/chains/discard.py b/Mailman/chains/discard.py
new file mode 100644
index 000000000..d4640f260
--- /dev/null
+++ b/Mailman/chains/discard.py
@@ -0,0 +1,43 @@
+# Copyright (C) 2007-2008 by the Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program 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 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+
+"""The terminal 'discard' chain."""
+
+__all__ = ['DiscardChain']
+__metaclass__ = type
+
+
+import logging
+
+from Mailman.chains.base import TerminalChainBase
+from Mailman.i18n import _
+
+
+log = logging.getLogger('mailman.vette')
+
+
+
+class DiscardChain(TerminalChainBase):
+    """Discard a message."""
+
+    name = 'discard'
+    description = _('Discard a message and stop processing.')
+
+    def _process(self, mlist, msg, msgdata):
+        """See `TerminalChainBase`."""
+        log.info('DISCARD: %s', msg.get('message-id', 'n/a'))
+        # Nothing more needs to happen.