-"""configuration files"""
+#!/usr/bin/env python3
+
+# pylint: disable=c0111
+
+"""
+update local configuration files from PLC
+"""
-import grp
import os
+import time
import pwd
-import sha
-import string
-import threading
+import grp
+from hashlib import sha1 as sha
+import xmlrpc.client
-import config
import curlwrapper
import logger
import tools
+from config import Config
+# right after net
+priority = 2
-class conf_files:
- def __init__(self):
- self.cond = threading.Condition()
- self.config = config.Config()
+class ConfFiles:
+ def __init__(self, noscripts=False):
+ self.config = Config()
+ self.noscripts = noscripts
self.data = None
def checksum(self, path):
try:
- f = open(path)
- try: return sha.new(f.read()).digest()
- finally: f.close()
- except IOError: return None
+ with open(path) as feed:
+ return sha(feed.read().encode()).digest()
+ except IOError:
+ return None
def system(self, cmd):
- if cmd:
- logger.log('conf_files: running command %s' % cmd)
- return os.system(cmd)
+ if not self.noscripts and cmd:
+ logger.verbose('conf_files: running command %s' % cmd)
+ return tools.fork_as(None, os.system, cmd)
else: return 0
def update_conf_file(self, cf_rec):
- if not cf_rec['enabled']: return
+ if not cf_rec['enabled']:
+ return
dest = cf_rec['dest']
- logger.log('conf_files: considering file %s' % dest)
err_cmd = cf_rec['error_cmd']
- mode = string.atoi(cf_rec['file_permissions'], base=8)
- uid = pwd.getpwnam(cf_rec['file_owner'])[2]
- gid = grp.getgrnam(cf_rec['file_group'])[2]
+ mode = int(cf_rec['file_permissions'], base=8)
+ try:
+ uid = pwd.getpwnam(cf_rec['file_owner'])[2]
+ except:
+ logger.log('conf_files: cannot find user %s -- %s not updated'
+ %(cf_rec['file_owner'], dest))
+ return
+ try:
+ gid = grp.getgrnam(cf_rec['file_group'])[2]
+ except:
+ logger.log('conf_files: cannot find group %s -- %s not updated'
+ %(cf_rec['file_group'], dest))
+ return
url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
- contents = curlwrapper.retrieve(url)
- logger.log('conf_files: retrieving url %s' % url)
- if not cf_rec['always_update'] and sha.new(contents).digest() == self.checksum(dest):
- logger.log('conf_files: skipping file %s, always_update is false and checksums are identical' % dest)
+ # set node_id at the end of the request - hacky
+ if tools.node_id():
+ if url.find('?') > 0:
+ url += '&'
+ else:
+ url += '?'
+ url += "node_id=%d"%tools.node_id()
+ else:
+ logger.log('conf_files: %s -- WARNING, cannot add node_id to request'
+ % dest)
+ try:
+ logger.verbose("conf_files: retrieving URL=%s"%url)
+ contents = curlwrapper.retrieve(url, self.config.cacert)
+ except xmlrpc.client.ProtocolError as e:
+ logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
+ return
+ if not cf_rec['always_update'] and sha(contents).digest() == self.checksum(dest):
return
if self.system(cf_rec['preinstall_cmd']):
self.system(err_cmd)
- if not cf_rec['ignore_cmd_errors']: return
- logger.log('conf_files: installing file %s' % dest)
- try: os.makedirs(os.path.dirname(dest))
- except OSError: pass
- tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid,gid))
- if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
-
- def run(self):
- while True:
- self.cond.acquire()
- while self.data == None: self.cond.wait()
- data = self.data
- self.data = None
- self.cond.release()
- for d in data:
- for f in d['conf_files']:
- try: self.update_conf_file(f)
- except: logger.log_exc()
-
- def callback(self, data):
- if data != None:
- self.cond.acquire()
- self.data = data
- self.cond.notify()
- self.cond.release()
-
-main = conf_files()
-
-def GetSlivers_callback(data): main.callback(data)
-
-def start(options): tools.as_daemon_thread(main.run)
+ if not cf_rec['ignore_cmd_errors']:
+ return
+ logger.log('conf_files: installing file %s from %s' % (dest, url))
+ try:
+ os.makedirs(os.path.dirname(dest))
+ except OSError:
+ pass
+ tools.write_file(dest, lambda f: f.write(contents.decode()),
+ mode=mode, uidgid=(uid, gid))
+ if self.system(cf_rec['postinstall_cmd']):
+ self.system(err_cmd)
+
+ def run_once(self, data):
+ if "conf_files" in data:
+ for file in data['conf_files']:
+ try:
+ self.update_conf_file(file)
+ except:
+ logger.log_exc("conf_files: failed to update conf_file")
+ else:
+ logger.log_missing_data("conf_files.run_once", 'conf_files')
+
+
+def start():
+ pass
+
+
+def GetSlivers(data, config=None, plc=None):
+ logger.log("conf_files: Running.")
+ instance = ConfFiles()
+ instance.run_once(data)
+ logger.log("conf_files: Done.")
+
+
+def main():
+ from argparse import ArgumentParser
+ from plcapi import PLCAPI
+
+ parser = ArgumentParser()
+ parser.add_argument('-f', '--config', action='store', dest='config',
+ default='/etc/planetlab/plc_config',
+ help='PLC configuration file')
+ parser.add_argument('-k', '--session', action='store', dest='session',
+ default='/etc/planetlab/session',
+ help='API session key (or file)')
+ parser.add_argument('--noscripts', action='store_true', dest='noscripts',
+ default=False,
+ help='Do not run pre- or post-install scripts')
+ parser.add_argument('--max-attempts', action='store', dest='max_attempts',
+ default=10,
+ help='Max number of attempts')
+ parser.add_argument('--period', action='store', dest='period',
+ help='Time in seconds to wait between attempts')
+ args = parser.parse_args()
+
+ # Load /etc/planetlab/plc_config
+ config = Config(args.config)
+
+ # Load /etc/planetlab/session
+ if os.path.exists(args.session):
+ with open(args.session) as feed:
+ session = feed.read().strip()
+ else:
+ session = args.session
+
+ # loop until it succeeds once
+ # this is a change that comes with python3/fedora29 in late 2018,
+ # because although the conf_files service is defined to systemd
+ # as a dependency of the network, it triggers too early
+ # at a point where eth0 is not ready
+
+ # Initialize XML-RPC client
+ attempts = 0
+ while True:
+ try:
+ plc = PLCAPI(config.plc_api_uri, config.cacert, auth=session)
+ data = plc.GetSlivers()
+ instance = ConfFiles(args.noscripts)
+ instance.run_once(data)
+ return 0
+ except Exception as exc:
+ logger.log_exc("Could not receive GetSlivers() from PLC")
+ attempts += 1
+ if attempts >= args.max_attempts:
+ return 1
+ logger.log("Waiting for {}s before trying again".format(args.period))
+ time.sleep(args.period)
+
+
+if __name__ == '__main__':
+ main()
git://git.onelab.eu / nodemanager.git / blobdiff