Synnefo » snf-ganeti » ganeti-local

class LUSearchTags(NoHooksLU):

  """Searches the tags for a given pattern.

  """

  _OP_REQP = ["pattern"]

  def CheckPrereq(self):

    """Check prerequisites.

    This checks the pattern passed for validity by compiling it.

    """

    try:

      self.re = re.compile(self.op.pattern)

    except re.error, err:

      raise errors.OpPrereqError("Invalid search pattern '%s': %s" %

                                 (self.op.pattern, err))

  def Exec(self, feedback_fn):

    """Returns the tag list.

    """

    cfg = self.cfg

    tgts = [("/cluster", cfg.GetClusterInfo())]

    ilist = [cfg.GetInstanceInfo(name) for name in cfg.GetInstanceList()]

    tgts.extend([("/instances/%s" % i.name, i) for i in ilist])

    nlist = [cfg.GetNodeInfo(name) for name in cfg.GetNodeList()]

    tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])

    results = []

    for path, target in tgts:

      for tag in target.GetTags():

        if self.re.search(tag):

          results.append((path, tag))

    return results