old_contents: #! /usr/bin/python
  
  import json
  import os
  import requests
  import sys
  
  REST_API="http://alpha.opencloud.us:8000/plstackapi/"
  
  NODES_API = REST_API + "nodes/"
  SLICES_API = REST_API + "slices/"
  SLIVERS_API = REST_API + "slivers/"
  
  opencloud_auth=("demo@onlab.us", "demo")
  
  def get_slice_id(slice_name):
      r = requests.get(SLICES_API + "?name=%s" % slice_name, auth=opencloud_auth)
      return r.json()[0]["id"]
  
  def get_node_id(host_name):
  #    r = requests.get(NODES_API + "?name=%s" % host_name, auth=opencloud_auth)
  #    return r.json()[0]["id"]
       r = requests.get(NODES_API)
       nodes = r.json()
       for node in nodes:
           if node["name"].lower() == host_name.lower():
               return node["id"]
       print >> sys.stderr, "Error: failed to find node %s" % host_name
       sys.exit(-1)
  
  def get_slivers(slice_id=None, node_id=None):
      queries = []
      if slice_id:
          queries.append("slice=%s" % str(slice_id))
      if node_id:
          queries.append("node=%s" % str(node_id))
  
      if queries:
          query_string = "?" + "&".join(queries)
      else:
          query_string = ""
  
      r = requests.get(SLIVERS_API + query_string, auth=opencloud_auth)
      return r.json()
  
  def main():
      global opencloud_auth
  
      if len(sys.argv)!=5:
          print >> sys.stderr, "syntax: get_instance_name.py <username>, <password>, <hostname> <slicename>"
          sys.exit(-1)
  
      username = sys.argv[1]
      password = sys.argv[2]
      hostname = sys.argv[3]
      slice_name = sys.argv[4]
  
      opencloud_auth=(username, password)
  
      slice_id = get_slice_id(slice_name)
      node_id = get_node_id(hostname)
      slivers = get_slivers(slice_id, node_id)
  
      instance_names = [x["instance_name"] for x in slivers if x["instance_name"]]
  
      # return the last one in the list (i.e. the newest one)
  
      print sorted(instance_names)[-1]
  
  if __name__ == "__main__":
      main()
  
  
new_contents: #! /usr/bin/python
  
  import json
  import os
  import requests
  import sys
  
  REST_API="http://alpha.opencloud.us:8000/plstackapi/"
  
  NODES_API = REST_API + "nodes/"
  SLICES_API = REST_API + "slices/"
  SLIVERS_API = REST_API + "slivers/"
  
  opencloud_auth=("demo@onlab.us", "demo")
  
  def get_slice_id(slice_name):
      r = requests.get(SLICES_API + "?name=%s" % slice_name, auth=opencloud_auth)
      return r.json()[0]["id"]
  
  def get_node_id(host_name):
       r = requests.get(NODES_API)
       nodes = r.json()
       for node in nodes:
           if node["name"].lower() == host_name.lower():
               return node["id"]
       print >> sys.stderr, "Error: failed to find node %s" % host_name
       sys.exit(-1)
  
  def get_slivers(slice_id=None, node_id=None):
      queries = []
      if slice_id:
          queries.append("slice=%s" % str(slice_id))
      if node_id:
          queries.append("node=%s" % str(node_id))
  
      if queries:
          query_string = "?" + "&".join(queries)
      else:
          query_string = ""
  
      r = requests.get(SLIVERS_API + query_string, auth=opencloud_auth)
      return r.json()
  
  def main():
      global opencloud_auth
  
      if len(sys.argv)!=5:
          print >> sys.stderr, "syntax: get_instance_name.py <username>, <password>, <hostname> <slicename>"
          sys.exit(-1)
  
      username = sys.argv[1]
      password = sys.argv[2]
      hostname = sys.argv[3]
      slice_name = sys.argv[4]
  
      opencloud_auth=(username, password)
  
      slice_id = get_slice_id(slice_name)
      node_id = get_node_id(hostname)
      slivers = get_slivers(slice_id, node_id)
  
      instance_names = [x["instance_name"] for x in slivers if x["instance_name"]]
  
      # return the last one in the list (i.e. the newest one)
  
      print sorted(instance_names)[-1]
  
  if __name__ == "__main__":
      main()
  
  
subject: delete commented out lines