tool for getting instance name via rest API
diff --git a/planetstack/tools/get_instance_name.py b/planetstack/tools/get_instance_name.py
new file mode 100644
index 0000000..a0b55d2
--- /dev/null
+++ b/planetstack/tools/get_instance_name.py
@@ -0,0 +1,65 @@
+#! /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"]
+
+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()
+