Differences

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--- python_wiki:spacewalk_list_groups [2016/11/30 22:05]
billdozor [Script Usage]
+++ python_wiki:spacewalk_list_groups [2017/07/07 23:30]
billdozor [Usage]
@@ Line 15: / Line 15: @@
 <code bash>
-./sw_listgroups.py HOSTNAME
+./sw_listgroups.py -n HOSTNAME
 </code>
@@ Line 23: / Line 23: @@
 <code python sw_listgroups.py>
 #!/usr/bin/python
 # Title: sw_listgroups.py
 # Description: Output a space separated list of Spacewalk groups a system is in.
-# Date: 2016-10-07
+# Date: 2017-06-27
-# Recent Changes:-header format/comment modifications
+# Recent Changes:-updated arguments to use argparse
-#                -Use spacecmd config file for credentials (ConfigParser)
+#                -check for variants of system name (lower,upper,fqdn of each)
 ####################################################################################
-#### Import Modules ####
+#=======================
-# sys.argv: Command line arguments
+# Import Modules
-from sys import argv
+#=======================
+# argparse: Command line arguments
+import argparse
 # ConfigParser: Use variables from external file
 import ConfigParser
@@ Line 43: / Line 45: @@
 # xmlrpclib: Allows for parsing of spacewalk APIs
 import xmlrpclib
-####################
-#### Command Line Arguments ####
+#=======================
-# If there is not 1 argument, show usage and exit
+# CUSTOMIZE HERE
-if len(argv[1:]) != 1:
+#=======================
-    print "==== Spacewalk: List Groups ===="
+# Domain Name (include first '.')
-    print
+domain_name=".example.com"
-    print "Description: Output a space separated list of Spacewalk groups a system is in."
-    print
-    print "--Usage--"
-    print "./sw_listgroups.py hostname"
-    print
-    print "--Other Requirements--"
-    print "-> spacecmd config file setup."
-    print
-    exit(1)
-# Set hostname from command line argument
-system_name = argv[1]
-################################
-#### Config Settings ####
+#=======================
+# Get Script Arguments
+#=======================
+# Build argument parser information
+parser = argparse.ArgumentParser(description="Output a space separated list of Spacewalk groups a system is in.")
+parser.add_argument("-n","--name", help="System Name.", required=True)
+args = vars(parser.parse_args())
+system_name = args['name']
+#=======================
+# Config Settings
+#=======================
 # Read Spacecmd Config file - Path set from $HOME variable + expected spacecmd config file
 config = ConfigParser.ConfigParser()
@@ Line 73: / Line 73: @@
 spacewalk_password = config.get("spacecmd", "password")
 spacewalk_server = config.get("spacecmd", "server")
-#########################
+#### End of Config Settings ####
-#### Main ####
+#=====================================
+# Functions; Main starts after
+#=====================================
+# Function: Get a system's id
+def get_system_id(system_name):
+  # Create all system name variants
+  system_name_lower = system_name.strip(domain_name).lower()
+  system_name_lower_fqdn = system_name_lower + domain_name
+  system_name_upper = system_name.strip(domain_name).upper()
+  system_name_upper_fqdn = system_name_upper + domain_name
+  # Attempt to get the system's id for each
+  system_id_lower = server.system.getId(key, system_name_lower)
+  system_id_lower_fqdn = server.system.getId(key, system_name_lower_fqdn)
+  system_id_upper = server.system.getId(key, system_name_upper)
+  system_id_upper_fqdn = server.system.getId(key, system_name_upper_fqdn)
+  # Check each for success
+  if system_id_lower:
+    system_id = system_id_lower[0]['id']
+  elif system_id_lower_fqdn:
+    system_id = system_id_lower_fqdn[0]['id']
+  elif system_id_upper:
+    system_id = system_id_upper[0]['id']
+  elif system_id_upper_fqdn:
+    system_id = system_id_upper_fqdn[0]['id']
+  else:
+    # System cannot be found
+    system_id = None
+  return system_id
+#===================
+# Main starts here
+#===================
 # Setup server info (rpc api endpoint)
 spacewalk_url = "https://" + spacewalk_server + "/rpc/api"
 server = xmlrpclib.Server(spacewalk_url)
 # Attempt to login and get a session id
 try:
@@ Line 87: / Line 122: @@
     print "Spacewalk Login failed."
     exit(1)
 # Get the system id and check to see if that system_name exists
-system_id = server.system.getId(key,system_name)
+system_id = get_system_id(system_name)
-if not system_id:
+if system_id == None:
     server.auth.logout(key)
-    print "Error:",system_name,"not found in Spacewalk!"
+    print("--> Error: (" + system_name + ") not found in Spacewalk!")
     exit(1)
 # Get all available groups for the system_name
-available_groups = server.system.listGroups(key,system_id[0]['id'])
+available_groups = server.system.listGroups(key, system_id)
 # Logout of Spacewalk server
 server.auth.logout(key)
 # Empty list to hold what groups the system_name is subscribed to
 subscribed_groups = []
 # Check available groups for subscribed = 1 (true), add to list
 for flag in available_groups:
     if flag['subscribed'] == 1:
         subscribed_groups.append(flag['system_group_name'])
 # A non-empty list evaluates to true
 if subscribed_groups:
@@ Line 116: / Line 151: @@
 else:
     # We have an empty list; the system is not subscribed to any groups
-    print "Node", system_name, "is not in any groups."
+    print("Node (" + system_name + ") is not in any groups.")
 </code>