llama-stack-mirror/docs/source/getting_started/demo_script.py
Dean Wampler b994465cc2
Added comment about a known limitation of AgentEventLogger
`AgentEventLogger` only supports streaming responses, so I suggest adding a comment near the bottom of `demo_script.py` letting the user know this, e.g., if they change the `stream` value to `False` in the call to `create_turn`.
2025-07-28 08:02:23 -05:00

65 lines
1.9 KiB
Python

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
from llama_stack_client import Agent, AgentEventLogger, RAGDocument, LlamaStackClient
vector_db_id = "my_demo_vector_db"
client = LlamaStackClient(base_url="http://localhost:8321")
models = client.models.list()
# Select the first LLM and first embedding models
model_id = next(m for m in models if m.model_type == "llm").identifier
embedding_model_id = (
em := next(m for m in models if m.model_type == "embedding")
).identifier
embedding_dimension = em.metadata["embedding_dimension"]
_ = client.vector_dbs.register(
vector_db_id=vector_db_id,
embedding_model=embedding_model_id,
embedding_dimension=embedding_dimension,
provider_id="faiss",
)
source = "https://www.paulgraham.com/greatwork.html"
print("rag_tool> Ingesting document:", source)
document = RAGDocument(
document_id="document_1",
content=source,
mime_type="text/html",
metadata={},
)
client.tool_runtime.rag_tool.insert(
documents=[document],
vector_db_id=vector_db_id,
chunk_size_in_tokens=50,
)
agent = Agent(
client,
model=model_id,
instructions="You are a helpful assistant",
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {"vector_db_ids": [vector_db_id]},
}
],
)
prompt = "How do you do great work?"
print("prompt>", prompt)
response = agent.create_turn(
messages=[{"role": "user", "content": prompt}],
session_id=agent.create_session("rag_session"),
stream=True,
)
# NOTE: `AgentEventLogger().log(response)` only works with streaming responses.
# So, if you change the value for `stream` to `False` in the `create_turn` call,
# comment out the following two lines!
for log in AgentEventLogger().log(response):
log.print()