script.py 文件源码

def get_host_variables(self, host):
        """ Runs <script> --host <hostname> to determine additional host variables """
        if self.host_vars_from_top is not None:
            try:
                got = self.host_vars_from_top.get(host.name, {})
            except AttributeError as e:
                raise AnsibleError("Improperly formated host information for %s: %s" % (host.name,to_native(e)))
            return got

        cmd = [self.filename, "--host", host.name]
        try:
            sp = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        except OSError as e:
            raise AnsibleError("problem running %s (%s)" % (' '.join(cmd), e))
        (out, err) = sp.communicate()
        if out.strip() == '':
            return dict()
        try:
            return json_dict_bytes_to_unicode(self._loader.load(out))
        except ValueError:
            raise AnsibleError("could not parse post variable response: %s, %s" % (cmd, out))