diff options
Diffstat (limited to 'src/lib/Bcfg2/Server/Plugins/Packages/Yum.py')
| -rw-r--r-- | src/lib/Bcfg2/Server/Plugins/Packages/Yum.py | 111 |
1 files changed, 77 insertions, 34 deletions
diff --git a/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py b/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py index 4bbcc59f7..0d49473c6 100644 --- a/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py +++ b/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py @@ -53,14 +53,15 @@ The Yum Backend import os import re import sys +import time import copy import errno import socket import logging import lxml.etree -import Bcfg2.Options import Bcfg2.Server.Plugin import Bcfg2.Server.FileMonitor +from lockfile import FileLock from Bcfg2.Utils import Executor # pylint: disable=W0622 from Bcfg2.Compat import StringIO, cPickle, HTTPError, URLError, \ @@ -274,6 +275,8 @@ class YumCollection(Collection): .. private-include: _add_gpg_instances, _get_pulp_consumer """ + _helper = None + #: Options that are included in the [packages:yum] section of the #: config but that should not be included in the temporary #: yum.conf we write out @@ -287,19 +290,25 @@ class YumCollection(Collection): debug=debug) self.keypath = os.path.join(self.cachepath, "keys") - self._helper = None + #: A :class:`Bcfg2.Utils.Executor` object to use to run + #: external commands + self.cmd = Executor() + if self.use_yum: #: Define a unique cache file for this collection to use #: for cached yum metadata self.cachefile = os.path.join(self.cachepath, "cache-%s" % self.cachekey) - if not os.path.exists(self.cachefile): - os.mkdir(self.cachefile) #: The path to the server-side config file used when #: resolving packages with the Python yum libraries self.cfgfile = os.path.join(self.cachefile, "yum.conf") - self.write_config() + + if not os.path.exists(self.cachefile): + self.debug_log("Creating common cache %s" % self.cachefile) + os.mkdir(self.cachefile) + if not self.disableMetaData: + self.setup_data() self.cmd = Executor() else: self.cachefile = None @@ -322,7 +331,27 @@ class YumCollection(Collection): self.logger.error("Could not create Pulp consumer " "cert directory at %s: %s" % (certdir, err)) - self.pulp_cert_set = PulpCertificateSet(certdir) + self.__class__.pulp_cert_set = PulpCertificateSet(certdir) + + @property + def disableMetaData(self): + """ Report whether or not metadata processing is enabled. + This duplicates code in Packages/__init__.py, and can probably + be removed in Bcfg2 1.4 when we have a module-level setup + object. """ + if self.setup is None: + return True + try: + return not self.setup.cfp.getboolean("packages", "resolver") + except (ConfigParser.NoSectionError, ConfigParser.NoOptionError): + return False + except ValueError: + # for historical reasons we also accept "enabled" and + # "disabled" + return self.setup.cfp.get( + "packages", + "metadata", + default="enabled").lower() == "disabled" @property def __package_groups__(self): @@ -337,15 +366,17 @@ class YumCollection(Collection): forking, but apparently not); finally we check in /usr/sbin, the default location. """ if not self._helper: - self._helper = Bcfg2.Options.setup.yum_helper - if not self._helper: + # pylint: disable=W0212 + self.__class__._helper = Bcfg2.Options.setup.yum_helper + if not self.__class__._helper: # first see if bcfg2-yum-helper is in PATH try: self.debug_log("Checking for bcfg2-yum-helper in $PATH") self.cmd.run(['bcfg2-yum-helper']) - self._helper = 'bcfg2-yum-helper' + self.__class__._helper = 'bcfg2-yum-helper' except OSError: - self._helper = "/usr/sbin/bcfg2-yum-helper" + self.__class__._helper = "/usr/sbin/bcfg2-yum-helper" + # pylint: enable=W0212 return self._helper @property @@ -382,6 +413,7 @@ class YumCollection(Collection): # the rpmdb is so hopelessly intertwined with yum that we # have to totally reinvent the dependency resolver. mainopts = dict(cachedir='/', + persistdir='/', installroot=self.cachefile, keepcache="0", debuglevel="0", @@ -846,6 +878,17 @@ class YumCollection(Collection): if not self.use_yum: return Collection.complete(self, packagelist) + lock = FileLock(os.path.join(self.cachefile, "lock")) + slept = 0 + while lock.is_locked(): + if slept > 30: + self.logger.warning("Packages: Timeout waiting for yum cache " + "to release its lock") + return set(), set() + self.logger.debug("Packages: Yum cache is locked, waiting...") + time.sleep(3) + slept += 3 + if packagelist: try: result = self.call_helper( @@ -890,28 +933,30 @@ class YumCollection(Collection): cmd.append("-d") cmd.append(command) self.debug_log("Packages: running %s" % " ".join(cmd)) + if inputdata: - result = self.cmd.run(cmd, inputdata=json.dumps(inputdata)) + result = self.cmd.run(cmd, timeout=self.setup['client_timeout'], + inputdata=json.dumps(inputdata)) else: - result = self.cmd.run(cmd) + result = self.cmd.run(cmd, timeout=self.setup['client_timeout']) if not result.success: - errlines = result.error.splitlines() self.logger.error("Packages: error running bcfg2-yum-helper: %s" % - errlines[0]) - for line in errlines[1:]: - self.logger.error("Packages: %s" % line) + result.error) elif result.stderr: - errlines = result.stderr.splitlines() self.debug_log("Packages: debug info from bcfg2-yum-helper: %s" % - errlines[0]) - for line in errlines[1:]: - self.debug_log("Packages: %s" % line) + result.stderr) + try: return json.loads(result.stdout) except ValueError: - err = sys.exc_info()[1] - self.logger.error("Packages: error reading bcfg2-yum-helper " - "output: %s" % err) + if result.stdout: + err = sys.exc_info()[1] + self.logger.error("Packages: Error reading bcfg2-yum-helper " + "output: %s" % err) + self.logger.error("Packages: bcfg2-yum-helper output: %s" % + result.stdout) + else: + self.logger.error("Packages: No bcfg2-yum-helper output") raise def setup_data(self, force_update=False): @@ -924,8 +969,7 @@ class YumCollection(Collection): If using the yum Python libraries, this cleans up cached yum metadata, regenerates the server-side yum config (in order to catch any new sources that have been added to this server), - and then cleans up cached yum metadata again, in case the new - config has any preexisting cache. + then regenerates the yum cache. :param force_update: Ignore all local cache and setup data from its original upstream sources (i.e., @@ -936,23 +980,22 @@ class YumCollection(Collection): return Collection.setup_data(self, force_update) if force_update: - # we call this twice: one to clean up data from the old - # config, and once to clean up data from the new config + # clean up data from the old config try: self.call_helper("clean") except ValueError: # error reported by call_helper pass - os.unlink(self.cfgfile) + if os.path.exists(self.cfgfile): + os.unlink(self.cfgfile) self.write_config() - if force_update: - try: - self.call_helper("clean") - except ValueError: - # error reported by call_helper - pass + try: + self.call_helper("makecache") + except ValueError: + # error reported by call_helper + pass class YumSource(Source): |