1 """configuration files"""
7 from hashlib import sha1 as sha
16 from config import Config
22 def __init__(self, noscripts=False):
23 self.config = Config()
24 self.noscripts = noscripts
27 def checksum(self, path):
30 try: return sha(f.read()).digest()
32 except IOError: return None
34 def system(self, cmd):
35 if not self.noscripts and cmd:
36 logger.verbose('conf_files: running command %s' % cmd)
37 return tools.fork_as(None, os.system, cmd)
40 def update_conf_file(self, cf_rec):
41 if not cf_rec['enabled']: return
43 err_cmd = cf_rec['error_cmd']
44 mode = string.atoi(cf_rec['file_permissions'], base=8)
46 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
48 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'],dest))
51 gid = grp.getgrnam(cf_rec['file_group'])[2]
53 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'],dest))
55 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
56 # set node_id at the end of the request - hacky
58 if url.find('?') >0: url += '&'
60 url += "node_id=%d"%tools.node_id()
62 logger.log('conf_files: %s -- WARNING, cannot add node_id to request'%dest)
64 logger.verbose("conf_files: retrieving URL=%s"%url)
65 contents = curlwrapper.retrieve(url, self.config.cacert)
66 except xmlrpclib.ProtocolError,e:
67 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
69 if not cf_rec['always_update'] and sha(contents).digest() == self.checksum(dest):
71 if self.system(cf_rec['preinstall_cmd']):
73 if not cf_rec['ignore_cmd_errors']: return
74 logger.log('conf_files: installing file %s from %s' % (dest, url))
75 try: os.makedirs(os.path.dirname(dest))
77 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
78 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
80 def run_once(self, data):
81 if data.has_key("conf_files"):
82 for f in data['conf_files']:
83 try: self.update_conf_file(f)
84 except: logger.log_exc("conf_files: failed to update conf_file")
86 logger.log_missing_data("conf_files.run_once",'conf_files')
91 def GetSlivers(data, config = None, plc = None):
92 logger.log("conf_files: Running.")
95 logger.log("conf_files: Done.")
97 if __name__ == '__main__':
99 parser = optparse.OptionParser()
100 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
101 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
102 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
103 (options, args) = parser.parse_args()
105 # Load /etc/planetlab/plc_config
106 config = Config(options.config)
108 # Load /etc/planetlab/session
109 if os.path.exists(options.session):
110 session = file(options.session).read().strip()
112 session = options.session
114 # Initialize XML-RPC client
115 from plcapi import PLCAPI
116 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
118 main = conf_files(options.noscripts)
119 data = plc.GetSlivers()