Files
vLLM/vllm/distributed/kv_transfer/kv_pipe/base.py
T
Russell Bryant e489ad7a21 [Misc] Add SPDX-License-Identifier headers to python source files (#12628)
- **Add SPDX license headers to python source files**
- **Check for SPDX headers using pre-commit**

commit 9d7ef44c3cfb72ca4c32e1c677d99259d10d4745
Author: Russell Bryant <rbryant@redhat.com>
Date:   Fri Jan 31 14:18:24 2025 -0500

    Add SPDX license headers to python source files
    
This commit adds SPDX license headers to python source files as
recommended to
the project by the Linux Foundation. These headers provide a concise way
that is
both human and machine readable for communicating license information
for each
source file. It helps avoid any ambiguity about the license of the code
and can
    also be easily used by tools to help manage license compliance.
    
The Linux Foundation runs license scans against the codebase to help
ensure
    we are in compliance with the licenses of the code we use, including
dependencies. Having these headers in place helps that tool do its job.
    
    More information can be found on the SPDX site:
    
    - https://spdx.dev/learn/handling-license-info/
    
    Signed-off-by: Russell Bryant <rbryant@redhat.com>

commit 5a1cf1cb3b80759131c73f6a9dddebccac039dea
Author: Russell Bryant <rbryant@redhat.com>
Date:   Fri Jan 31 14:36:32 2025 -0500

    Check for SPDX headers using pre-commit
    
    Signed-off-by: Russell Bryant <rbryant@redhat.com>

---------

Signed-off-by: Russell Bryant <rbryant@redhat.com>
2025-02-02 11:58:18 -08:00

67 lines
2.0 KiB
Python

# SPDX-License-Identifier: Apache-2.0
"""
This file defines an interface `KVPipeBase`
that provides an abstraction for sending and receiving tensors, or None, via
distributed communications.
All classes instantiated from this interface are assumed to be a FIFO pipe.
If your distributed communication platform already supports key-value lookup,
you can bypass this interface and directly start from `kv_lookup_buffer`.
"""
from abc import ABC, abstractmethod
from typing import Optional
import torch
class KVPipeBase(ABC):
"""
This class provides an interface for sending and receiving tensors, or
None, by distributed communications.
"""
@abstractmethod
def send_tensor(self, tensor: Optional[torch.Tensor]) -> None:
"""Send a tensor, or None, via the pipe.
Need to support sending None -- important for error handling.
TODO: add a `key` argument so that we can use traditional
key-value database as the distributed communication mechanism behind
the pipe.
Args:
tensor (Optional[torch.Tensor]): The tensor to be sent. Can be None.
Raises:
NotImplementedError: This method must be implemented in subclasses.
"""
raise NotImplementedError
@abstractmethod
def recv_tensor(self) -> Optional[torch.Tensor]:
"""Receive a tensor (can be None) from the pipeline.
Returns:
Optional[torch.Tensor]: The tensor received from the pipeline. Can
be None.
Raises:
NotImplementedError: This method must be implemented in subclasses.
"""
raise NotImplementedError
@abstractmethod
def close(self) -> None:
"""Close the pipeline and release resources.
This method is responsible for closing the communication pipeline
and releasing any resources associated with it.
Raises:
NotImplementedError: This method must be implemented in subclasses.
"""
raise NotImplementedError