====

[plcapi.git] / PLC / PCUs.py

diff --git a/PLC/PCUs.py b/PLC/PCUs.py
index 820ac00..d628677 100644 (file)
--- a/PLC/PCUs.py
+++ b/PLC/PCUs.py
@@ -4,14 +4,13 @@
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id: PCUs.py,v 1.2 2006/10/11 19:54:53 mlhuang Exp $
-#
 
 from PLC.Faults import *
 from PLC.Parameter import Parameter
+from PLC.Filter import Filter
 from PLC.Debug import profile
 from PLC.Table import Row, Table
-from PLC.NodeNetworks import valid_ip, NodeNetwork, NodeNetworks
+from PLC.Interfaces import valid_ip, Interface, Interfaces
 from PLC.Nodes import Node, Nodes
 
 class PCU(Row):
@@ -22,29 +21,44 @@ class PCU(Row):
 
     table_name = 'pcus'
     primary_key = 'pcu_id'
+    join_tables = ['pcu_node']
     fields = {
         'pcu_id': Parameter(int, "PCU identifier"),
         'site_id': Parameter(int, "Identifier of site where PCU is located"),
         'hostname': Parameter(str, "PCU hostname", max = 254),
         'ip': Parameter(str, "PCU IP address", max = 254),
-        'protocol': Parameter(str, "PCU protocol, e.g. ssh, https, telnet", max = 16),
-        'username': Parameter(str, "PCU username", max = 254),
-        'password': Parameter(str, "PCU username", max = 254),
-        'notes': Parameter(str, "Miscellaneous notes", max = 254),
-        'model': Parameter(str, "PCU model string", max = 32),
-        'node_ids': Parameter([int], "List of nodes that this PCU controls", ro = True),
-        'ports': Parameter([int], "List of the port numbers that each node is connected to", ro = True),
+        'protocol': Parameter(str, "PCU protocol, e.g. ssh, https, telnet", max = 16, nullok = True),
+        'username': Parameter(str, "PCU username", max = 254, nullok = True),
+        'password': Parameter(str, "PCU username", max = 254, nullok = True),
+        'notes': Parameter(str, "Miscellaneous notes", max = 254, nullok = True),
+        'model': Parameter(str, "PCU model string", max = 32, nullok = True),
+        'node_ids': Parameter([int], "List of nodes that this PCU controls"),
+        'ports': Parameter([int], "List of the port numbers that each node is connected to"),
+        'last_updated': Parameter(int, "Date and time when node entry was created", ro = True),
         }
 
-    def __init__(self, api, fields = {}):
-        Row.__init__(self, fields)
-        self.api = api
-
     def validate_ip(self, ip):
         if not valid_ip(ip):
             raise PLCInvalidArgument, "Invalid IP address " + ip
         return ip
 
+    validate_last_updated = Row.validate_timestamp
+
+    def update_timestamp(self, col_name, commit = True):
+        """
+        Update col_name field with current time
+        """
+
+        assert 'pcu_id' in self
+        assert self.table_name
+
+        self.api.db.do("UPDATE %s SET %s = CURRENT_TIMESTAMP " % (self.table_name, col_name) + \
+                       " where pcu_id = %d" % (self['pcu_id']) )
+        self.sync(commit)
+
+    def update_last_updated(self, commit = True):
+        self.update_timestamp('last_updated', commit)
+
     def add_node(self, node, port, commit = True):
         """
         Add node to existing PCU.
@@ -96,44 +110,25 @@ class PCU(Row):
             self['node_ids'].remove(node_id)
             self['ports'].remove(port)
 
-    def delete(self, commit = True):
-        """
-        Delete existing PCU.
-        """
-
-        assert 'pcu_id' in self
-
-        # Clean up various join tables
-        for table in ['pcu_node', 'pcus']:
-            self.api.db.do("DELETE FROM " + table +
-                           " WHERE pcu_id = %(pcu_id)d",
-                           self)
-
-        if commit:
-            self.api.db.commit()
-
 class PCUs(Table):
     """
     Representation of row(s) from the pcus table in the
     database.
     """
 
-    def __init__(self, api, pcu_ids = None):
-        self.api = api
-
-        # N.B.: Node IDs returned may be deleted.
-        sql = "SELECT %s FROM view_pcus" % \
-              ", ".join(PCU.fields)
+    def __init__(self, api, pcu_filter = None, columns = None):
+        Table.__init__(self, api, PCU, columns)
 
-        if pcu_ids:
-            sql += " WHERE pcu_id IN (%s)" % ", ".join(map(str, pcu_ids))
+        sql = "SELECT %s FROM view_pcus WHERE True" % \
+              ", ".join(self.columns)
 
-        rows = self.api.db.selectall(sql)
+        if pcu_filter is not None:
+            if isinstance(pcu_filter, (list, tuple, set, int, long)):
+                pcu_filter = Filter(PCU.fields, {'pcu_id': pcu_filter})
+            elif isinstance(pcu_filter, dict):
+                pcu_filter = Filter(PCU.fields, pcu_filter)
+            else:
+                raise PLCInvalidArgument, "Wrong pcu filter %r"%pcu_filter
+            sql += " AND (%s) %s" % pcu_filter.sql(api)
 
-        for row in rows:
-            self[row['pcu_id']] = pcu = PCU(api, row)
-            for aggregate in ['node_ids', 'ports']:
-                if not pcu.has_key(aggregate) or pcu[aggregate] is None:
-                    pcu[aggregate] = []
-                else:
-                    pcu[aggregate] = map(int, pcu[aggregate].split(','))
+        self.selectall(sql)