3 """configuration files"""
8 from hashlib import sha1 as sha
14 from config import Config
20 def __init__(self, noscripts=False):
21 self.config = Config()
22 self.noscripts = noscripts
25 def checksum(self, path):
28 try: return sha(f.read()).digest()
30 except IOError: return None
32 def system(self, cmd):
33 if not self.noscripts and cmd:
34 logger.verbose('conf_files: running command %s' % cmd)
35 return tools.fork_as(None, os.system, cmd)
38 def update_conf_file(self, cf_rec):
39 if not cf_rec['enabled']:
42 err_cmd = cf_rec['error_cmd']
43 mode = int(cf_rec['file_permissions'], base=8)
45 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
47 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'], dest))
50 gid = grp.getgrnam(cf_rec['file_group'])[2]
52 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'], dest))
54 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
55 # set node_id at the end of the request - hacky
57 if url.find('?') > 0: url += '&'
59 url += "node_id=%d"%tools.node_id()
61 logger.log('conf_files: %s -- WARNING, cannot add node_id to request'%dest)
63 logger.verbose("conf_files: retrieving URL=%s"%url)
64 contents = curlwrapper.retrieve(url, self.config.cacert)
65 except xmlrpc.client.ProtocolError as e:
66 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
68 if not cf_rec['always_update'] and sha(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 "conf_files" in data:
81 for f in data['conf_files']:
82 try: self.update_conf_file(f)
83 except: logger.log_exc("conf_files: failed to update conf_file")
85 logger.log_missing_data("conf_files.run_once", 'conf_files')
90 def GetSlivers(data, config = None, plc = None):
91 logger.log("conf_files: Running.")
94 logger.log("conf_files: Done.")
96 if __name__ == '__main__':
98 parser = optparse.OptionParser()
99 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
100 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
101 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
102 (options, args) = parser.parse_args()
104 # Load /etc/planetlab/plc_config
105 config = Config(options.config)
107 # Load /etc/planetlab/session
108 if os.path.exists(options.session):
109 with open(options.session) as f:
110 session = f.read().strip()
112 session = options.session
114 # Initialize XML-RPC client
115 from plcapi import PLCAPI
116 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
118 main = conf_files(options.noscripts)
119 data = plc.GetSlivers()