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'])
51 # set node_id at the end of the request - hacky
53 if url.find('?') >0: url += '&'
55 url += "node_id=%d"%tools.node_id()
57 logger.log('%s -- WARNING, cannot add node_id to request'%dest)
58 # pass slicefamily as well, as stored in /etc/planetlab/slicefamily ont the node
59 if tools.slicefamily():
60 if url.find('?') >0: url += '&'
62 url += "slicefamily=%s"%tools.slicefamily()
64 logger.verbose("retrieving URL=%s"%url)
65 contents = curlwrapper.retrieve(url, self.config.cacert)
66 except xmlrpclib.ProtocolError,e:
67 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
69 if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
71 if self.system(cf_rec['preinstall_cmd']):
73 if not cf_rec['ignore_cmd_errors']: return
74 logger.log('conf_files: installing file %s from %s' % (dest, url))
75 try: os.makedirs(os.path.dirname(dest))
77 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
78 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
80 def run_once(self, data):
81 for f in data['conf_files']:
82 try: self.update_conf_file(f)
83 except: logger.log_exc()
88 while self.data == None: self.cond.wait()
94 def callback(self, data):
103 def start(options, config):
105 main = conf_files(config)
106 tools.as_daemon_thread(main.run)
108 def GetSlivers(data):
110 assert main is not None
111 return main.callback(data)
113 if __name__ == '__main__':
115 parser = optparse.OptionParser()
116 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
117 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
118 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
119 (options, args) = parser.parse_args()
121 # Load /etc/planetlab/plc_config
122 from config import Config
123 config = Config(options.config)
125 # Load /etc/planetlab/session
126 if os.path.exists(options.session):
127 session = file(options.session).read().strip()
129 session = options.session
131 # Initialize XML-RPC client
132 from plcapi import PLCAPI
133 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
135 main = conf_files(config, options.noscripts)
136 data = plc.GetSlivers()