1 """configuration files"""
13 from config import Config
16 def __init__(self, noscripts=False):
17 self.config = Config()
18 self.noscripts = noscripts
21 def checksum(self, path):
24 try: return sha.new(f.read()).digest()
26 except IOError: return None
28 def system(self, cmd):
29 if not self.noscripts and cmd:
30 logger.verbose('conf_files: running command %s' % cmd)
31 return tools.fork_as(None, os.system, 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)
40 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
42 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'],dest))
45 gid = grp.getgrnam(cf_rec['file_group'])[2]
47 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'],dest))
49 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
50 # set node_id at the end of the request - hacky
52 if url.find('?') >0: url += '&'
54 url += "node_id=%d"%tools.node_id()
56 logger.log('%s -- WARNING, cannot add node_id to request'%dest)
57 # pass slicefamily as well, as stored in /etc/planetlab/slicefamily ont the node
58 if tools.slicefamily():
59 if url.find('?') >0: url += '&'
61 url += "slicefamily=%s"%tools.slicefamily()
63 logger.verbose("retrieving URL=%s"%url)
64 contents = curlwrapper.retrieve(url, self.config.cacert)
65 except xmlrpclib.ProtocolError,e:
66 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
68 if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
70 if self.system(cf_rec['preinstall_cmd']):
72 if not cf_rec['ignore_cmd_errors']: return
73 logger.log('conf_files: installing file %s from %s' % (dest, url))
74 try: os.makedirs(os.path.dirname(dest))
76 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
77 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
79 def run_once(self, data):
80 if data.has_key("conf_files"):
81 for f in data['conf_files']:
82 try: self.update_conf_file(f)
83 except: logger.log_exc()
84 else: logger.log("conf_files: No conf_files found or API failure. Skipping")
87 def start(options, config): pass
89 def GetSlivers(data, config = None, plc = None):
90 logger.log("conf_files: Running.")
93 logger.log("conf_files: Done.")
95 if __name__ == '__main__':
97 parser = optparse.OptionParser()
98 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
99 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
100 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
101 (options, args) = parser.parse_args()
103 # Load /etc/planetlab/plc_config
104 config = Config(options.config)
106 # Load /etc/planetlab/session
107 if os.path.exists(options.session):
108 session = file(options.session).read().strip()
110 session = options.session
112 # Initialize XML-RPC client
113 from plcapi import PLCAPI
114 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
116 main = conf_files(options.noscripts)
117 data = plc.GetSlivers()