From: Stephen Soltesz <soltesz@cs.princeton.edu>
Date: Mon, 5 Jan 2009 16:52:08 +0000 (+0000)
Subject: add RebootNodeWithPCU call.  fails gracefully if dependencies are not met.
X-Git-Tag: PLCAPI-4.3-3~9
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=6d910181758008d05de3917fdac5b35b34188a8e;p=plcapi.git

add RebootNodeWithPCU call.  fails gracefully if dependencies are not met.
---

diff --git a/PLC/Methods/RebootNodeWithPCU.py b/PLC/Methods/RebootNodeWithPCU.py
new file mode 100644
index 0000000..46c8c84
--- /dev/null
+++ b/PLC/Methods/RebootNodeWithPCU.py
@@ -0,0 +1,75 @@
+import socket
+
+from PLC.Faults import *
+from PLC.Method import Method
+from PLC.Parameter import Parameter, Mixed
+from PLC.Nodes import Node, Nodes
+from PLC.NodeNetworks import NodeNetwork, NodeNetworks
+from PLC.Auth import Auth
+from PLC.POD import udp_pod
+
+try:
+	from pcucontrol import reboot
+	external_dependency = True
+except:
+	external_dependency = False
+
+class RebootNodeWithPCU(Method):
+    """
+	Uses the associated PCU to attempt to reboot the given Node.
+
+    Admins can reboot any node. Techs and PIs can only reboot nodes at
+    their site.
+
+    Returns 1 if the reboot proceeded without error (Note: this does not guarantee
+	that the reboot is successful).
+	Returns -1 if external dependencies for this call are not available.
+	Returns "error string" if the reboot failed with a specific message.
+    """
+
+    roles = ['admin', 'pi', 'tech']
+
+    accepts = [
+        Auth(),
+        Mixed(Node.fields['node_id'],
+              Node.fields['hostname'])
+        ]
+
+    returns = Parameter(int, '1 if successful')
+
+    def call(self, auth, node_id_or_hostname):
+        # Get account information
+        nodes = Nodes(self.api, [node_id_or_hostname])
+        if not nodes:
+            raise PLCInvalidArgument, "No such node"
+
+        node = nodes[0]
+
+        # Authenticated function
+        assert self.caller is not None
+
+        # If we are not an admin, make sure that the caller is a
+        # member of the site at which the node is located.
+        if 'admin' not in self.caller['roles']:
+            if node['site_id'] not in self.caller['site_ids']:
+                raise PLCPermissionDenied, "Not allowed to reboot nodes from specified site"
+
+		# Verify that the node has pcus associated with it.
+		pcus = PCUs(self.api, {'pcu_id' : node['pcu_ids']} )
+        if not pcus:
+            raise PLCInvalidArgument, "No PCUs associated with Node"
+
+		pcu = pcus[0]
+
+		if not external_dependency:
+            raise PLCNotImplemented, "Could not load external module to attempt reboot"
+
+		# model, hostname, port, 
+		# i = pcu['node_ids'].index(node['node_id'])
+		# p = pcu['ports'][i]
+		ret = reboot.reboot_api(node, pcu)
+
+        self.event_objects = {'Node': [node['node_id']]}
+        self.message = "RebootNodeWithPCU called"
+	        
+        return ret