4 """configuration files"""
10 from hashlib import sha1 as sha
19 from config import Config
25 def __init__(self, noscripts=False):
26 self.config = Config()
27 self.noscripts = noscripts
30 def checksum(self, path):
33 try: return sha(f.read()).digest()
35 except IOError: return None
37 def system(self, cmd):
38 if not self.noscripts and cmd:
39 logger.verbose('conf_files: running command %s' % cmd)
40 return tools.fork_as(None, os.system, cmd)
43 def update_conf_file(self, cf_rec):
44 if not cf_rec['enabled']: return
46 err_cmd = cf_rec['error_cmd']
47 mode = string.atoi(cf_rec['file_permissions'], base=8)
49 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
51 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'],dest))
54 gid = grp.getgrnam(cf_rec['file_group'])[2]
56 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'],dest))
58 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
59 # set node_id at the end of the request - hacky
61 if url.find('?') >0: url += '&'
63 url += "node_id=%d"%tools.node_id()
65 logger.log('conf_files: %s -- WARNING, cannot add node_id to request'%dest)
67 logger.verbose("conf_files: retrieving URL=%s"%url)
68 contents = curlwrapper.retrieve(url, self.config.cacert)
69 except xmlrpclib.ProtocolError,e:
70 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
72 if not cf_rec['always_update'] and sha(contents).digest() == self.checksum(dest):
74 if self.system(cf_rec['preinstall_cmd']):
76 if not cf_rec['ignore_cmd_errors']: return
77 logger.log('conf_files: installing file %s from %s' % (dest, url))
78 try: os.makedirs(os.path.dirname(dest))
80 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
81 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
83 def run_once(self, data):
84 if data.has_key("conf_files"):
85 for f in data['conf_files']:
86 try: self.update_conf_file(f)
87 except: logger.log_exc("conf_files: failed to update conf_file")
89 logger.log_missing_data("conf_files.run_once",'conf_files')
94 def GetSlivers(data, config = None, plc = None):
95 logger.log("conf_files: Running.")
98 logger.log("conf_files: Done.")
100 if __name__ == '__main__':
102 parser = optparse.OptionParser()
103 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
104 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
105 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
106 (options, args) = parser.parse_args()
108 # Load /etc/planetlab/plc_config
109 config = Config(options.config)
111 # Load /etc/planetlab/session
112 if os.path.exists(options.session):
113 session = file(options.session).read().strip()
115 session = options.session
117 # Initialize XML-RPC client
118 from plcapi import PLCAPI
119 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
121 main = conf_files(options.noscripts)
122 data = plc.GetSlivers()