====

[plcapi.git] / PLC / BootStates.py

diff --git a/PLC/BootStates.py b/PLC/BootStates.py
index 2cc0b22..2bbcf0d 100644 (file)
--- a/PLC/BootStates.py
+++ b/PLC/BootStates.py
@@ -1,25 +1,51 @@
 #
-# Functions for interacting with the node_bootstates table in the database
+# Functions for interacting with the boot_states table in the database
 #
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id$
-#
 
+from PLC.Faults import *
 from PLC.Parameter import Parameter
+from PLC.Table import Row, Table
 
-class BootStates(list):
+class BootState(Row):
     """
-    Representation of the node_bootstates table in the database.
+    Representation of a row in the boot_states table. To use,
+    instantiate with a dict of values.
     """
 
+    table_name = 'boot_states'
+    primary_key = 'boot_state'
+    join_tables = ['nodes']
     fields = {
-        'boot_state': Parameter(int, "Node boot state"),
+        'boot_state': Parameter(str, "Boot state", max = 20),
         }
 
-    def __init__(self, api):
-        sql = "SELECT * FROM node_bootstates"
-        
-        for row in api.db.selectall(sql):
-            self.append(row['boot_state'])
+    def validate_boot_state(self, name):
+        # Make sure name is not blank
+        if not len(name):
+            raise PLCInvalidArgument, "Boot state must be specified"
+
+        # Make sure boot state does not already exist
+        conflicts = BootStates(self.api, [name])
+        if conflicts:
+            raise PLCInvalidArgument, "Boot state name already in use"
+
+        return name
+
+class BootStates(Table):
+    """
+    Representation of the boot_states table in the database.
+    """
+
+    def __init__(self, api, boot_states = None):
+        Table.__init__(self, api, BootState)
+
+        sql = "SELECT %s FROM boot_states" % \
+              ", ".join(BootState.fields)
+
+        if boot_states:
+            sql += " WHERE boot_state IN (%s)" % ", ".join( [ api.db.quote (s) for s in boot_states ] )
+
+        self.selectall(sql)