Merge remote-tracking branch 'origin/pycurl' into planetlab-4_0-branch

[plcapi.git] / PLC / PCUs.py

diff --git a/PLC/PCUs.py b/PLC/PCUs.py
index 155ac9a..0ab56cc 100644 (file)
--- a/PLC/PCUs.py
+++ b/PLC/PCUs.py
@@ -4,14 +4,16 @@
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id: PCUs.py,v 1.1 2006/09/06 15:36:07 mlhuang Exp $
+# $Id: PCUs.py 5574 2007-10-25 20:33:17Z thierry $
 #
 
 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.Nodes import Node, Nodes
 
 class PCU(Row):
     """
@@ -21,44 +23,76 @@ 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"),
         }
 
-    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
 
-    def delete(self, commit = True):
+    def add_node(self, node, port, commit = True):
+        """
+        Add node to existing PCU.
+        """
+
+        assert 'pcu_id' in self
+        assert isinstance(node, Node)
+        assert isinstance(port, (int, long))
+        assert 'node_id' in node
+
+        pcu_id = self['pcu_id']
+        node_id = node['node_id']
+
+        if node_id not in self['node_ids'] and port not in self['ports']:
+            self.api.db.do("INSERT INTO pcu_node (pcu_id, node_id, port)" \
+                           " VALUES(%(pcu_id)d, %(node_id)d, %(port)d)",
+                           locals())
+
+            if commit:
+                self.api.db.commit()
+
+            self['node_ids'].append(node_id)
+            self['ports'].append(port)
+
+    def remove_node(self, node, commit = True):
         """
-        Delete existing PCU.
+        Remove node from existing PCU.
         """
 
         assert 'pcu_id' in self
+        assert isinstance(node, Node)
+        assert 'node_id' in node
+
+        pcu_id = self['pcu_id']
+        node_id = node['node_id']
 
-        # 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 node_id in self['node_ids']:
+            i = self['node_ids'].index(node_id)
+            port = self['ports'][i]
 
-        if commit:
-            self.api.db.commit()
+            self.api.db.do("DELETE FROM pcu_node" \
+                           " WHERE pcu_id = %(pcu_id)d" \
+                           " AND node_id = %(node_id)d",
+                           locals())
+
+            if commit:
+                self.api.db.commit()
+
+            self['node_ids'].remove(node_id)
+            self['ports'].remove(port)
 
 class PCUs(Table):
     """
@@ -66,22 +100,17 @@ class PCUs(Table):
     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)):
+                pcu_filter = Filter(PCU.fields, {'pcu_id': pcu_filter})
+            elif isinstance(pcu_filter, dict):
+                pcu_filter = Filter(PCU.fields, 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 ['pcu_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)