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

    opcodes.OpSearchTags: cmdlib.LUSearchTags,

class OpSearchTags(OpCode):

  """Searches the tags in the cluster for a given pattern."""

  OP_ID = "OP_TAGS_SEARCH"

  __slots__ = ["pattern"]

      <title>SEARCH-TAGS</title>

      <cmdsynopsis>

        <command>search-tags</command>

        <arg choice="req"><replaceable>pattern</replaceable></arg>

      </cmdsynopsis>

      <para>

        Searches the tags on all objects in the cluster (the cluster

        itself, the nodes and the instances) for a given pattern. The

        pattern is interpreted as a regular expression and a search

        will be done on it (i.e. the given pattern is not anchored to

        the beggining of the string; if you want that, prefix the

        pattern with <literal>^</literal>).

      </para>

      <para>

        If no tags are matching the pattern, the exit code of the

        command will be one. If there is at least one match, the exit

        code will be zero. Each match is listed on one line, the

        object and the tag separated by a space. The cluster will be

        listed as <filename>/cluster</filename>, a node will be listed

        as

        <filename>/nodes/<replaceable>name</replaceable></filename>,

        and an instance as

        <filename>/instances/<replaceable>name</replaceable></filename>.

        Example:

      </para>

<screen>

# gnt-cluster search time

/cluster ctime:2007-09-01

/nodes/node1.example.com mtime:2007-10-04

</screen>

    </refsect2>

    <refsect2>

def SearchTags(opts, args):

  """Searches the tags on all the cluster.

  """

  op = opcodes.OpSearchTags(pattern=args[0])

  result = SubmitOpCode(op)

  if not result:

    return 1

  result = list(result)

  result.sort()

  for path, tag in result:

    print "%s %s" % (path, tag)

  'search-tags': (SearchTags, ARGS_ONE,

                  [DEBUG_OPT], "", "Searches the tags on all objects on"

                  " the cluster for a given pattern (regex)"),