[Frontend][2/n] Make pooling entrypoints request schema consensus | ChatRequest (#32574)

Signed-off-by: wang.yuqi <yuqi.wang@daocloud.io>

examples/pooling/embed/openai_embedding_matryoshka_fy_client.py

@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+"""Example Python client for embedding API dimensions using vLLM API server
+NOTE:
+    start a supported Matryoshka Embeddings model server with `vllm serve`, e.g.
+    vllm serve jinaai/jina-embeddings-v3 --trust-remote-code
+"""
+
+from openai import OpenAI
+
+# Modify OpenAI's API key and API base to use vLLM's API server.
+openai_api_key = "EMPTY"
+openai_api_base = "http://localhost:8000/v1"
+
+
+def main():
+    client = OpenAI(
+        # defaults to os.environ.get("OPENAI_API_KEY")
+        api_key=openai_api_key,
+        base_url=openai_api_base,
+    )
+
+    models = client.models.list()
+    model = models.data[0].id
+
+    responses = client.embeddings.create(
+        input=["Follow the white rabbit."],
+        model=model,
+        dimensions=32,
+    )
+
+    for data in responses.data:
+        print(data.embedding)  # List of float of len 32
+
+
+if __name__ == "__main__":
+    main()