X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-remote.git/blobdiff_plain/d81e1374cf40cfe2cf98bd4264e63e8d43aaf912..c6f3577d4ad01e99b50af6b68d2399b35e0ea4cd:/files/usr/sbin/sipb-xen-remote-listvms

diff --git a/files/usr/sbin/sipb-xen-remote-listvms b/files/usr/sbin/sipb-xen-remote-listvms
index 4f16a98..f9b3f36 100755
--- a/files/usr/sbin/sipb-xen-remote-listvms
+++ b/files/usr/sbin/sipb-xen-remote-listvms
@@ -7,72 +7,8 @@ suite.
 
 from itertools import chain
 from subprocess import CalledProcessError, PIPE, Popen
-from sys import argv
-
-###
-
-import compiler
-
-class Unsafe_Source_Error(Exception):
-    def __init__(self,error,descr = None,node = None):
-        self.error = error
-        self.descr = descr
-        self.node = node
-        self.lineno = getattr(node,"lineno",None)
-        
-    def __repr__(self):
-        return "Line %d.  %s: %s" % (self.lineno, self.error, self.descr)
-    __str__ = __repr__    
-           
-class SafeEval(object):
-    
-    def visit(self, node,**kw):
-        cls = node.__class__
-        meth = getattr(self,'visit'+cls.__name__,self.default)
-        return meth(node, **kw)
-            
-    def default(self, node, **kw):
-        for child in node.getChildNodes():
-            return self.visit(child, **kw)
-            
-    visitExpression = default
-    
-    def visitConst(self, node, **kw):
-        return node.value
-
-    def visitDict(self,node,**kw):
-        return dict([(self.visit(k),self.visit(v)) for k,v in node.items])
-        
-    def visitTuple(self,node, **kw):
-        return tuple(self.visit(i) for i in node.nodes)
-        
-    def visitList(self,node, **kw):
-        return [self.visit(i) for i in node.nodes]
-
-class SafeEvalWithErrors(SafeEval):
-
-    def default(self, node, **kw):
-        raise Unsafe_Source_Error("Unsupported source construct",
-                                node.__class__,node)
-            
-    def visitName(self,node, **kw):
-        if node.name == 'None': return None
-        raise Unsafe_Source_Error("Strings must be quoted", 
-                                 node.name, node)
-                                 
-    # Add more specific errors if desired
-            
-def safe_eval(source, fail_on_error = True):
-    if source.strip() == '': return None
-    walker = fail_on_error and SafeEvalWithErrors() or SafeEval()
-    try:
-        ast = compiler.parse(source,"eval")
-    except SyntaxError, err:
-        raise
-    try:
-        return walker.visit(ast)
-    except Unsafe_Source_Error, err:
-        raise
+from sys import argv, stdout
+from yaml import safe_dump, safe_load
 
 ###
 
@@ -89,20 +25,18 @@ def run(cmd):
 
 def main(argv):
   # Query each of the server for their VMs.
-  # run('kinit -k host/sipb-vm-58.mit.edu'.split())
   # TODO get `servers` from a real list of all the VM hosts (instead of
   # hardcoding the list here)
   servers = [ 'black-mesa.mit.edu', 'sx-blade-2.mit.edu' ]
   # XXX
-  results = [ safe_eval(run(['remctl', server, 'remote', 'web', 'listvms'] + argv[1:]))
+  results = [ safe_load(run(['remctl', server, 'remote', 'web', 'listvms']))
               for server in servers ]
   results = filter( lambda x: x is not None, results )
 
   # Merge the results and print.
   merged = {}
   for result in results: merged.update(result)
-  print merged
-  print '.'
+  print safe_dump(merged, default_flow_style=False)
 
 if __name__ == '__main__':
   main(argv)