import json import lxml.etree import os import Bcfg2.Server.Plugin class OhaiCache(object): def __init__(self, dirname): self.dirname = dirname self.cache = dict() def __setitem__(self, item, value): self.cache[item] = json.loads(value) file("%s/%s.json" % (self.dirname, item), 'w').write(value) def __getitem__(self, item): if item not in self.cache: try: data = open("%s/%s.json" % (self.dirname, item)).read() except: raise KeyError, item self.cache[item] = json.loads(data) return self.cache[item] def __iter__(self): data = self.cache.keys() data.extend([x[:-5] for x in os.listdir(self.dirname)]) return data.__iter__() class Ohai(Bcfg2.Server.Plugin.Plugin, Bcfg2.Server.Plugin.Probing, Bcfg2.Server.Plugin.Connector): name = 'Ohai' experimental = True def __init__(self, core, datastore): Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore) Bcfg2.Server.Plugin.Probing.__init__(self) Bcfg2.Server.Plugin.Connector.__init__(self) self.probe = lxml.etree.Element('probe', name='Ohai', source='Ohai', interpreter='/bin/sh') self.probe.text = 'ohai' try: os.stat(self.data) except: os.makedirs(self.data) self.cache = OhaiCache(self.data) def GetProbes(self, meta, force=False): return [self.probe] def ReceiveData(self, meta, datalist): self.cache[meta.hostname] = datalist[0].text def get_additional_data(self, meta): if meta.hostname in self.cache: return self.cache[meta.hostname] return dict()