db-config

   1 #!/usr/bin/env /usr/bin/plcsh
   2 #
   3 # Bootstraps the PLC database with a default administrator account and
   4 # a default site, defines default slice attribute types, and
   5 # creates/updates default system slices.
   6 #
   7 # Mark Huang <mlhuang@cs.princeton.edu>
   8 # Copyright (C) 2006 The Trustees of Princeton University
   9 #
  10 # $Id$
  11 # $HeadURL$
  12
  13 from plc_config import PLCConfiguration
  14 import sys
  15 import resource
  16
  17 g_url = ""
  18 def GetMyPLCURL(): return g_url
  19 def SetMyPLCURL(url):
  20     global g_url
  21     g_url = url
  22
  23 # Get list of existing tag types
  24 g_known_tag_types = [tag_type['tagname'] for tag_type in GetTagTypes()]
  25 g_known_tag_types.sort()
  26
  27 def SetTagType(tag_type):
  28     global g_known_tag_types
  29     # Create/update default slice tag types
  30     if tag_type['tagname'] not in g_known_tag_types:
  31         AddTagType(tag_type)
  32         g_known_tag_types.append(tag_type['tagname'])
  33         g_known_tag_types.sort()
  34     else:
  35         UpdateTagType(tag_type['tagname'], tag_type)
  36
  37 # Get list of existing (enabled, global) files
  38 g_conf_files = GetConfFiles()
  39 g_conf_files = filter(lambda conf_file: conf_file['enabled'] and \
  40                     not conf_file['node_ids'] and \
  41                     not conf_file['nodegroup_ids'],
  42                     g_conf_files)
  43 g_dests = [conf_file['dest'] for conf_file in g_conf_files]
  44 g_conf_files = dict(zip(g_dests, g_conf_files))
  45
  46 # Get list of existing initscripts
  47 g_oldinitscripts = GetInitScripts()
  48 g_oldinitscripts = [script['name'] for script in oldinitscripts]
  49
  50 def SetInitScript(initscript):
  51     global g_oldinitscripts
  52     if initscript['name'] not in g_oldinitscripts:
  53         AddInitScript(initscript)
  54         g_oldinitscript.append(initscript['name'])
  55     else:
  56         orig_initscript = g_oldinitscripts[initscript['name']]
  57         initscript_id = orig_initscript['initscript_id']
  58         UpdateConfFile(initscript_id, initscript)
  59
  60 def SetConfFile(conf_file):
  61     global g_conf_files, g_dests
  62     if conf_file['dest'] not in g_dests:
  63         AddConfFile(conf_file)
  64     else:
  65         orig_conf_file = g_conf_files[conf_file['dest']]
  66         conf_file_id = orig_conf_file['conf_file_id']
  67         UpdateConfFile(conf_file_id, conf_file)
  68
  69 def SetSlice(slice, tags):
  70     # Create or Update slice
  71     slices = GetSlices([slice['name']])
  72     if len(slices)==1:
  73         slice_id = slices[0]['slice_id']
  74         UpdateSlice(slice_id, slice)
  75     else:
  76         AddSlice(slice)
  77
  78     # Get slice structure with all fields
  79     slice = GetSlices([slice['name']])[0]
  80
  81     # Create/update all tags
  82     slice_tags = {}
  83     if slice['slice_tag_ids']:
  84         # Delete unknown attributes
  85         for slice_tag in GetSliceTags(slice['slice_tag_ids']):
  86             if (slice_tag['tagname'], slice_tag['value']) not in tags:
  87                 DeleteSliceTag(slice_tag['slice_tag_id'])
  88             else:
  89                 slice_tags[slice_tag['tagname']]=slice_tag['value']
  90
  91     # only update slice tags that have changed
  92     for (name, value) in tags:
  93         if name not in slice_tags:
  94             AddSliceTag(slice['name'], name, value)
  95         elif value <> slice_tags[name]:
  96             UpdateSliceTag(slice['name'],value)
  97
  98 def SetMessage(message):
  99     messages = GetMessages([message['message_id']])
 100     if len(messages)==0:
 101         AddMessage(message)
 102     else:
 103         UpdateMessage(message['message_id'],message)
 104
 105 # Get all model names
 106 g_pcu_models = [type['model'] for type in GetPCUTypes()]
 107
 108 def SetPCUType(pcu_type):
 109     global g_pcu_models
 110     if 'pcu_protocol_types' in pcu_type:
 111         protocol_types = pcu_type['pcu_protocol_types']
 112         # Take this value out of the struct.
 113         del pcu_type['pcu_protocol_types']
 114     else:
 115         protocol_types = []
 116
 117     if pcu_type['model'] not in g_pcu_models:
 118         # Add the name/model info into DB
 119         id = AddPCUType(pcu_type)
 120         # for each protocol, also add this.
 121         for ptype in protocol_types:
 122             AddPCUProtocolType(id, ptype)
 123
 124 def GetSnippets(directory):
 125     filenames = []
 126     if os.path.exists(directory):
 127         try:
 128             filenames = os.listdir(directory)
 129         except OSError, e:
 130             raise Exception, "Error when opening %s (%s)" % \
 131                   (os.path.join(dir, file), e)
 132
 133     ignored = (".bak","~",".rpmsave",".rpmnew",".orig")
 134     numberedfiles = {}
 135     for filename in filenames:
 136         shouldIgnore = False
 137         for ignore in ignored:
 138             if filename.endswith(ignore):
 139                 shouldIgnore = True
 140                 break
 141
 142         if not shouldIgnore:
 143             parts = filename.split('-')
 144             if len(parts)>=2:
 145                 name = '-'.join(parts)
 146                 try:
 147                     number = int(parts[0])
 148                     entry = numberedfiles.get(number,[])
 149                     entry.append(name)
 150                     numberedfiles[number]=entry
 151                 except ValueError:
 152                     shouldIgnore = True
 153             else:
 154                 shouldIgnore = True
 155
 156         if shouldIgnore:
 157             print "db-config: ignoring %s snippet" % filename
 158
 159     filenames = []
 160     keys = numberedfiles.keys()
 161     keys.sort()
 162     for k in keys:
 163         for filename in numberedfiles[k]:
 164             filenames.append(filename)
 165     return filenames
 166
 167 def main():
 168     cfg = PLCConfiguration()
 169     cfg.load()
 170     variables = cfg.variables()
 171
 172     # Load variables into dictionaries
 173     for category_id, (category, variablelist) in variables.iteritems():
 174         globals()[category_id] = dict(zip(variablelist.keys(),
 175                                           [variable['value'] for variable in variablelist.values()]))
 176
 177     directory="/etc/planetlab/db-config.d"
 178     snippets = GetSnippets(directory)
 179     for snippet in snippets:
 180         fullpath = os.path.join(directory, snippet)
 181         execfile(fullpath)
 182
 183 if __name__ == '__main__':
 184     main()
 185
 186 # Local variables:
 187 # tab-width: 4
 188 # mode: python
 189 # End: