1 """configuration files"""
16 def __init__(self, config, noscripts=False):
18 self.noscripts = noscripts
19 self.cond = threading.Condition()
22 def checksum(self, path):
25 try: return sha.new(f.read()).digest()
27 except IOError: return None
29 def system(self, cmd):
30 if not self.noscripts and cmd:
31 logger.verbose('conf_files: running command %s' % cmd)
32 return tools.fork_as(None, os.system, cmd)
35 def update_conf_file(self, cf_rec):
36 if not cf_rec['enabled']: return
38 err_cmd = cf_rec['error_cmd']
39 mode = string.atoi(cf_rec['file_permissions'], base=8)
41 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
43 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'],dest))
46 gid = grp.getgrnam(cf_rec['file_group'])[2]
48 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'],dest))
50 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
52 contents = curlwrapper.retrieve(url, self.config.cacert)
53 except xmlrpclib.ProtocolError,e:
54 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
56 if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
58 if self.system(cf_rec['preinstall_cmd']):
60 if not cf_rec['ignore_cmd_errors']: return
61 logger.verbose('conf_files: installing file %s from %s' % (dest, url))
62 try: os.makedirs(os.path.dirname(dest))
64 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
65 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
67 def run_once(self, data):
68 for f in data['conf_files']:
69 try: self.update_conf_file(f)
70 except: logger.log_exc()
75 while self.data == None: self.cond.wait()
81 def callback(self, data):
90 def start(options, config):
92 main = conf_files(config)
93 tools.as_daemon_thread(main.run)
97 assert main is not None
98 return main.callback(data)
100 if __name__ == '__main__':
102 parser = optparse.OptionParser()
103 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
104 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
105 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
106 (options, args) = parser.parse_args()
108 # Load /etc/planetlab/plc_config
109 from config import Config
110 config = Config(options.config)
112 # Load /etc/planetlab/session
113 if os.path.exists(options.session):
114 session = file(options.session).read().strip()
116 session = options.session
118 # Initialize XML-RPC client
119 from plcapi import PLCAPI
120 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
122 main = conf_files(config, options.noscripts)
123 data = plc.GetSlivers()