init src 0.9.2

vllm/assets/base.py

@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from functools import lru_cache
+from pathlib import Path
+from typing import Optional
+
+import vllm.envs as envs
+from vllm.connections import global_http_connection
+
+VLLM_S3_BUCKET_URL = "https://vllm-public-assets.s3.us-west-2.amazonaws.com"
+
+
+def get_cache_dir() -> Path:
+    """Get the path to the cache for storing downloaded assets."""
+    path = Path(envs.VLLM_ASSETS_CACHE)
+    path.mkdir(parents=True, exist_ok=True)
+
+    return path
+
+
+@lru_cache
+def get_vllm_public_assets(filename: str,
+                           s3_prefix: Optional[str] = None) -> Path:
+    """
+    Download an asset file from ``s3://vllm-public-assets``
+    and return the path to the downloaded file.
+    """
+    asset_directory = get_cache_dir() / "vllm_public_assets"
+    asset_directory.mkdir(parents=True, exist_ok=True)
+
+    asset_path = asset_directory / filename
+    if not asset_path.exists():
+        if s3_prefix is not None:
+            filename = s3_prefix + "/" + filename
+        global_http_connection.download_file(
+            f"{VLLM_S3_BUCKET_URL}/{filename}",
+            asset_path,
+            timeout=envs.VLLM_IMAGE_FETCH_TIMEOUT)
+
+    return asset_path