1 """configuration files"""
16 def __init__(self, config, noscripts=False):
18 self.noscripts = noscripts
19 self.cond = threading.Condition()
22 # get node_id from /etc/planetlab/node_id and cache it
26 if conf_files._node_id is None:
28 conf_files._node_id=int(file("/etc/planetlab/node_id").read())
30 conf_files._node_id=""
31 return conf_files._node_id
33 def checksum(self, path):
36 try: return sha.new(f.read()).digest()
38 except IOError: return None
40 def system(self, cmd):
41 if not self.noscripts and cmd:
42 logger.log('conf_files: running command %s' % cmd)
43 return tools.fork_as(None, os.system, cmd)
46 def update_conf_file(self, cf_rec):
47 if not cf_rec['enabled']: return
49 # XXX Remove once old Node Manager is out of service
50 if dest == '/etc/proper/propd.conf': return
51 err_cmd = cf_rec['error_cmd']
52 mode = string.atoi(cf_rec['file_permissions'], base=8)
54 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
56 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'],dest))
59 gid = grp.getgrnam(cf_rec['file_group'])[2]
61 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'],dest))
63 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
64 # set node_id at the end of the request - hacky
65 if conf_files.node_id():
66 if url.find('?') >0: url += '&'
68 url += "node_id=%d"%conf_files.node_id()
70 logger.log("retrieving URL=%s"%url)
71 contents = curlwrapper.retrieve(url, self.config.cacert)
72 except xmlrpclib.ProtocolError,e:
73 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
75 if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
77 if self.system(cf_rec['preinstall_cmd']):
79 if not cf_rec['ignore_cmd_errors']: return
80 logger.log('conf_files: installing file %s from %s' % (dest, url))
81 try: os.makedirs(os.path.dirname(dest))
83 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
84 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
86 def run_once(self, data):
87 for f in data['conf_files']:
88 try: self.update_conf_file(f)
89 except: logger.log_exc()
94 while self.data == None: self.cond.wait()
100 def callback(self, data):
109 def start(options, config):
111 main = conf_files(config)
112 tools.as_daemon_thread(main.run)
114 def GetSlivers(data):
116 assert main is not None
117 return main.callback(data)
119 if __name__ == '__main__':
121 parser = optparse.OptionParser()
122 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
123 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
124 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
125 (options, args) = parser.parse_args()
127 # Load /etc/planetlab/plc_config
128 from config import Config
129 config = Config(options.config)
131 # Load /etc/planetlab/session
132 if os.path.exists(options.session):
133 session = file(options.session).read().strip()
135 session = options.session
137 # Initialize XML-RPC client
138 from plcapi import PLCAPI
139 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
141 main = conf_files(config, options.noscripts)
142 data = plc.GetSlivers()