- restructured

- implementation of client and sysuser cli
- backend for client, sysuser, domain and record
- unified cli binary gva


git-svn-id: file:///home/www/usr01/svn/gnuviechadmin/gnuviech.info/gnuviechadmin/trunk@226 a67ec6bc-e5d5-0310-a910-815c51eb3124

gnuviechadmin/backend/BackendEntity.py

@@ -0,0 +1,83 @@
+# -*- coding: UTF-8 -*-
+#
+# Copyright (C) 2007 by Jan Dittberner.
+#
+# 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.
+#
+# Version: $Id$
+
+import ConfigParser, os
+from subprocess import *
+from sqlalchemy import *
+from gnuviechadmin.exceptions import *
+
+class BackendEntity(object):
+    """This is the abstract base class for all backend entity classes."""
+
+    def __init__(self, verbose = False):
+        self.verbose = verbose
+        self.config = ConfigParser.ConfigParser()
+        self.config.readfp(open('gnuviechadmin/defaults.cfg'))
+        self.config.read(['gnuviechadmin/gva.cfg',
+                          os.path.expanduser('~/.gva.cfg')])
+
+    def __repr__(self):
+        if self.verbose:
+            cols = [col for col in \
+                    object_mapper(self).local_table.columns.keys()]
+            format = "%(class)s:"
+            format = format + ", ".join([col + "=%(" + col + ")s" for col in \
+                                         cols])
+            data = {'class' : self.__class__.__name__}
+        else:
+            cols = self._shortkeys
+            format = ",".join("%(" + col + ")s" for col in cols)
+            data = {}
+        data.update(dict([(col, self.__getattribute__(col)) for col in cols]))
+        return format % data
+
+    def sucommand(self, cmdline, pipedata = None):
+        """Executes a command as root using the configured suwrapper
+        command. If a pipe is specified it is used as stdin of the
+        subprocess."""
+        suwrapper = self.config.get('common', 'suwrapper')
+        toexec = "%s %s" % (suwrapper, cmdline)
+        if pipedata:
+            p = Popen(toexec, shell = True, stdin=PIPE)
+            pipe = p.stdin
+            print >>pipe, pipedata
+            pipe.close()
+            sts = os.waitpid(p.pid, 0)
+            if self.verbose:
+                print "%s|%s: %d" % (pipedata, toexec, sts[1])
+        else:
+            p = Popen(toexec, shell = True)
+            sts = os.waitpid(p.pid, 0)
+            if self.verbose:
+                print "%s: %s" % (toexec, sts[1])
+        return sts[1]
+
+    def validate(self):
+        """Validates whether all mandatory fields of the entity have
+        values."""
+        missingfields = []
+        for key in [col.name for col in \
+                    object_mapper(self).local_table.columns \
+                    if not col.primary_key and not col.nullable]:
+            if self.__getattribute__(key) is None:
+                missingfields.append(key)
+        if missingfields:
+            raise MissingFieldsError(missingfields)