4 """configuration files"""
16 from config import Config
19 def __init__(self, noscripts=False):
20 self.config = Config()
21 self.noscripts = noscripts
24 def checksum(self, path):
27 try: return sha.new(f.read()).digest()
29 except IOError: return None
31 def system(self, cmd):
32 if not self.noscripts and cmd:
33 logger.verbose('conf_files: running command %s' % cmd)
34 return tools.fork_as(None, os.system, cmd)
37 def update_conf_file(self, cf_rec):
38 if not cf_rec['enabled']: return
40 err_cmd = cf_rec['error_cmd']
41 mode = string.atoi(cf_rec['file_permissions'], base=8)
43 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
45 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'],dest))
48 gid = grp.getgrnam(cf_rec['file_group'])[2]
50 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'],dest))
52 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
53 # set node_id at the end of the request - hacky
55 if url.find('?') >0: url += '&'
57 url += "node_id=%d"%tools.node_id()
59 logger.log('%s -- WARNING, cannot add node_id to request'%dest)
61 logger.verbose("retrieving URL=%s"%url)
62 contents = curlwrapper.retrieve(url, self.config.cacert)
63 except xmlrpclib.ProtocolError,e:
64 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
66 if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
68 if self.system(cf_rec['preinstall_cmd']):
70 if not cf_rec['ignore_cmd_errors']: return
71 logger.log('conf_files: installing file %s from %s' % (dest, url))
72 try: os.makedirs(os.path.dirname(dest))
74 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
75 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
77 def run_once(self, data):
78 if data.has_key("conf_files"):
79 for f in data['conf_files']:
80 try: self.update_conf_file(f)
81 except: logger.log_exc()
82 else: logger.log("conf_files: No conf_files found or API failure. Skipping")
85 def start(options, config): pass
87 def GetSlivers(data, config = None, plc = None):
88 logger.log("conf_files: Running.")
91 logger.log("conf_files: Done.")
93 if __name__ == '__main__':
95 parser = optparse.OptionParser()
96 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
97 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
98 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
99 (options, args) = parser.parse_args()
101 # Load /etc/planetlab/plc_config
102 config = Config(options.config)
104 # Load /etc/planetlab/session
105 if os.path.exists(options.session):
106 session = file(options.session).read().strip()
108 session = options.session
110 # Initialize XML-RPC client
111 from plcapi import PLCAPI
112 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
114 main = conf_files(options.noscripts)
115 data = plc.GetSlivers()