1 """configuration files"""
16 def __init__(self, config):
18 self.cond = threading.Condition()
21 def checksum(self, path):
24 try: return sha.new(f.read()).digest()
26 except IOError: return None
28 def system(self, cmd):
30 logger.log('conf_files: running command %s' % cmd)
34 def update_conf_file(self, cf_rec):
35 if not cf_rec['enabled']: return
37 err_cmd = cf_rec['error_cmd']
38 mode = string.atoi(cf_rec['file_permissions'], base=8)
39 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
40 gid = grp.getgrnam(cf_rec['file_group'])[2]
41 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
42 contents = curlwrapper.retrieve(url, self.config.cacert)
43 if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
45 if self.system(cf_rec['preinstall_cmd']):
47 if not cf_rec['ignore_cmd_errors']: return
48 logger.log('conf_files: installing file %s from %s' % (dest, url))
49 try: os.makedirs(os.path.dirname(dest))
51 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
52 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
54 def run_once(self, data):
56 for f in d['conf_files']:
57 try: self.update_conf_file(f)
58 except: logger.log_exc()
63 while self.data == None: self.cond.wait()
69 def callback(self, data):
78 def start(options, config):
80 main = conf_files(config)
81 tools.as_daemon_thread(main.run)
85 assert main is not None
86 return main.callback(data)
88 if __name__ == '__main__':
90 parser = optparse.OptionParser()
91 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
92 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
93 (options, args) = parser.parse_args()
95 # Load /etc/planetlab/plc_config
96 from config import Config
97 config = Config(options.config)
99 # Load /etc/planetlab/session
100 if os.path.exists(options.session):
101 session = file(options.session).read().strip()
103 session = options.session
105 # Initialize XML-RPC client
106 from plcapi import PLCAPI
107 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
109 main = conf_files(config)
110 data = plc.GetSlivers()