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#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from fastdeploy.utils import console_logger as logger

from .base import Platform, _Backend


class IluvatarPlatform(Platform):
    device_name = "iluvatar_gpu"

    @classmethod
    def get_attention_backend_cls(cls, selected_backend):
        """
        get_attention_backend_cls
        """
        if selected_backend == _Backend.APPEND_ATTN:
            logger.info("Using ixinfer MHA backend instead of append attention")
            return "fastdeploy.model_executor.layers.backends.iluvatar.MhaAttnBackend"
        else:
            raise ValueError(
                "Invalid attention backend you specified.\n"
                "Now only support [NATIVE_ATTN, MLA_ATTN, APPEND_ATTN] in cuda place."
            )
