diff options
Diffstat (limited to 'build/lib/Bcfg2/Server/Plugins/Probes.py')
| -rw-r--r-- | build/lib/Bcfg2/Server/Plugins/Probes.py | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/build/lib/Bcfg2/Server/Plugins/Probes.py b/build/lib/Bcfg2/Server/Plugins/Probes.py new file mode 100644 index 000000000..c00185732 --- /dev/null +++ b/build/lib/Bcfg2/Server/Plugins/Probes.py @@ -0,0 +1,150 @@ +import lxml.etree +import re + +import Bcfg2.Server.Plugin + +specific_probe_matcher = re.compile("(.*/)?(?P<basename>\S+)(.(?P<mode>[GH](\d\d)?)_\S+)") +probe_matcher = re.compile("(.*/)?(?P<basename>\S+)") + +class ProbeSet(Bcfg2.Server.Plugin.EntrySet): + ignore = re.compile("^(\.#.*|.*~|\\..*\\.(tmp|sw[px])|probed\\.xml)$") + def __init__(self, path, fam, encoding, plugin_name): + fpattern = '[0-9A-Za-z_\-]+' + self.plugin_name = plugin_name + Bcfg2.Server.Plugin.EntrySet.__init__(self, fpattern, path, + Bcfg2.Server.Plugin.SpecificData, + encoding) + fam.AddMonitor(path, self) + self.bangline = re.compile('^#!(?P<interpreter>.*)$') + + def HandleEvent(self, event): + if event.filename != self.path: + return self.handle_event(event) + + def get_probe_data(self, metadata): + ret = [] + build = dict() + candidates = self.get_matching(metadata) + candidates.sort(lambda x, y: cmp(x.specific, y.specific)) + for entry in candidates: + rem = specific_probe_matcher.match(entry.name) + if not rem: + rem = probe_matcher.match(entry.name) + pname = rem.group('basename') + if pname not in build: + build[pname] = entry + + for (name, entry) in build.iteritems(): + probe = lxml.etree.Element('probe') + probe.set('name', name.split('/')[-1]) + probe.set('source', self.plugin_name) + probe.text = entry.data + match = self.bangline.match(entry.data.split('\n')[0]) + if match: + probe.set('interpreter', match.group('interpreter')) + else: + probe.set('interpreter', '/bin/sh') + ret.append(probe) + return ret + +class Probes(Bcfg2.Server.Plugin.Plugin, + Bcfg2.Server.Plugin.Probing, + Bcfg2.Server.Plugin.Connector): + """A plugin to gather information from a client machine.""" + name = 'Probes' + __version__ = '$Id$' + __author__ = 'bcfg-dev@mcs.anl.gov' + + def __init__(self, core, datastore): + Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore) + Bcfg2.Server.Plugin.Connector.__init__(self) + Bcfg2.Server.Plugin.Probing.__init__(self) + + try: + self.probes = ProbeSet(self.data, core.fam, core.encoding, + self.name) + except: + raise Bcfg2.Server.Plugin.PluginInitError + + self.probedata = dict() + self.cgroups = dict() + self.load_data() + + def write_data(self): + """Write probe data out for use with bcfg2-info.""" + top = lxml.etree.Element("Probed") + for client, probed in self.probedata.iteritems(): + cx = lxml.etree.SubElement(top, 'Client', name=client) + for probe in probed: + lxml.etree.SubElement(cx, 'Probe', name=probe, + value=self.probedata[client][probe]) + for group in self.cgroups[client]: + lxml.etree.SubElement(cx, "Group", name=group) + data = lxml.etree.tostring(top, encoding='UTF-8', xml_declaration=True, + pretty_print='true') + try: + datafile = open("%s/%s" % (self.data, 'probed.xml'), 'w') + except IOError: + self.logger.error("Failed to write probed.xml") + datafile.write(data) + + def load_data(self): + try: + data = lxml.etree.parse(self.data + '/probed.xml').getroot() + except: + self.logger.error("Failed to read file probed.xml") + return + self.probedata = {} + self.cgroups = {} + for client in data.getchildren(): + self.probedata[client.get('name')] = {} + self.cgroups[client.get('name')]=[] + for pdata in client: + if (pdata.tag == 'Probe'): + self.probedata[client.get('name')][pdata.get('name')] = pdata.get('value') + elif (pdata.tag == 'Group'): + self.cgroups[client.get('name')].append(pdata.get('name')) + + def GetProbes(self, meta, force=False): + """Return a set of probes for execution on client.""" + return self.probes.get_probe_data(meta) + + def ReceiveData(self, client, datalist): + self.cgroups[client.hostname] = [] + self.probedata[client.hostname] = {} + for data in datalist: + self.ReceiveDataItem(client, data) + self.write_data() + + def ReceiveDataItem(self, client, data): + """Receive probe results pertaining to client.""" + if not self.cgroups.has_key(client.hostname): + self.cgroups[client.hostname] = [] + if data.text == None: + self.logger.error("Got null response to probe %s from %s" % \ + (data.get('name'), client.hostname)) + try: + self.probedata[client.hostname].update({data.get('name'): ''}) + except KeyError: + self.probedata[client.hostname] = {data.get('name'): ''} + return + dlines = data.text.split('\n') + self.logger.debug("%s:probe:%s:%s" % (client.hostname, + data.get('name'), [line.strip() for line in dlines])) + for line in dlines[:]: + if line.split(':')[0] == 'group': + newgroup = line.split(':')[1].strip() + if newgroup not in self.cgroups[client.hostname]: + self.cgroups[client.hostname].append(newgroup) + dlines.remove(line) + dtext = "\n".join(dlines) + try: + self.probedata[client.hostname].update({data.get('name'):dtext}) + except KeyError: + self.probedata[client.hostname] = {data.get('name'):dtext} + + def get_additional_groups(self, meta): + return self.cgroups.get(meta.hostname, list()) + + def get_additional_data(self, meta): + return self.probedata.get(meta.hostname, dict()) |