task.py 文件源码

def _post_validate_environment(self, attr, value, templar):
        '''
        Override post validation of vars on the play, as we don't want to
        template these too early.
        '''
        env = {}
        if value is not None:

            def _parse_env_kv(k, v):
                try:
                    env[k] = templar.template(v, convert_bare=False)
                except AnsibleUndefinedVariable as e:
                    if self.action in ('setup', 'gather_facts') and 'ansible_env' in to_native(e):
                        # ignore as fact gathering sets ansible_env
                        pass

            if isinstance(value, list):
                for env_item in value:
                    if isinstance(env_item, dict):
                        for k in env_item:
                            _parse_env_kv(k, env_item[k])
                    else:
                        isdict = templar.template(env_item, convert_bare=False)
                        if isinstance(isdict, dict):
                            env.update(isdict)
                        else:
                            display.warning("could not parse environment value, skipping: %s" % value)

            elif isinstance(value, dict):
                # should not really happen
                env = dict()
                for env_item in value:
                    _parse_env_kv(env_item, value[env_item])
            else:
                # at this point it should be a simple string, also should not happen
                env = templar.template(value, convert_bare=False)

        return env