incorporate tool calling (#131)

backend/pyproject.toml

@@ -14,7 +14,7 @@ fastapi = "^0.109.2"
 langserve = "^0.0.45"
 uvicorn = "^0.27.1"
 pydantic = "^1.10"
-langchain-openai = "^0.0.8"
+langchain-openai = "^0.1.3"
 jsonschema = "^4.21.1"
 sse-starlette = "^2.0.0"
 alembic = "^1.13.1"
@@ -26,6 +26,8 @@ lxml = "^5.1.0"
 faiss-cpu = "^1.7.4"
 python-multipart = "^0.0.9"
 langchain-fireworks = "^0.1.1"
+langchain-anthropic = "^0.1.11"
+langchain-groq = "^0.1.3"
 
 [tool.poetry.group.dev.dependencies]
 jupyterlab = "^3.6.1"

backend/server/extraction_runnable.py

@@ -1,12 +1,13 @@
 from __future__ import annotations
 
 import json
+import uuid
 from typing import Any, Dict, List, Optional, Sequence
 
 from fastapi import HTTPException
 from jsonschema import Draft202012Validator, exceptions
 from langchain.text_splitter import TokenTextSplitter
-from langchain_core.messages import AIMessage, HumanMessage
+from langchain_core.messages import AIMessage, HumanMessage, ToolMessage
 from langchain_core.prompts import ChatPromptTemplate
 from langchain_core.runnables import chain
 from langserve import CustomUserType
@@ -97,19 +98,18 @@ def _make_prompt_template(
             # TODO: We'll need to refactor this at some point to
             # support other encoding strategies. The function calling logic here
             # has some hard-coded assumptions (e.g., name of parameters like `data`).
-            function_call = {
-                "arguments": json.dumps(
-                    {
-                        "data": example.output,
-                    }
-                ),
+            _id = uuid.uuid4().hex[:]
+            tool_call = {
+                "args": {"data": example.output},
                 "name": function_name,
+                "id": _id,
             }
             few_shot_prompt.extend(
                 [
                     HumanMessage(content=example.text),
-                    AIMessage(
-                        content="", additional_kwargs={"function_call": function_call}
+                    AIMessage(content="", tool_calls=[tool_call]),
+                    ToolMessage(
+                        content="You have correctly called this tool.", tool_call_id=_id
                     ),
                 ]
             )
@@ -172,10 +172,9 @@ async def extraction_runnable(extraction_request: ExtractRequest) -> ExtractResp
         schema["title"],
     )
     model = get_model(extraction_request.model_name)
-    # N.B. method must be consistent with examples in _make_prompt_template
-    runnable = (
-        prompt | model.with_structured_output(schema=schema, method="function_calling")
-    ).with_config({"run_name": "extraction"})
+    runnable = (prompt | model.with_structured_output(schema=schema)).with_config(
+        {"run_name": "extraction"}
+    )
 
     return await runnable.ainvoke({"text": extraction_request.text})
 

backend/server/models.py

@@ -1,8 +1,10 @@
 import os
 from typing import Optional
 
+from langchain_anthropic import ChatAnthropic
 from langchain_core.language_models.chat_models import BaseChatModel
 from langchain_fireworks import ChatFireworks
+from langchain_groq import ChatGroq
 from langchain_openai import ChatOpenAI
 
 
@@ -37,6 +39,21 @@ def get_supported_models():
             ),
             "description": "Mixtral 8x7B Instruct v0.1 (Together AI)",
         }
+    if "ANTHROPIC_API_KEY" in os.environ:
+        models["claude-3-sonnet-20240229"] = {
+            "chat_model": ChatAnthropic(
+                model="claude-3-sonnet-20240229", temperature=0
+            ),
+            "description": "Claude 3 Sonnet",
+        }
+    if "GROQ_API_KEY" in os.environ:
+        models["groq-llama3-8b-8192"] = {
+            "chat_model": ChatGroq(
+                model="llama3-8b-8192",
+                temperature=0,
+            ),
+            "description": "GROQ Llama 3 8B",
+        }
 
     return models
 

backend/tests/unit_tests/fake/test_fake_chat_model.py

@@ -6,16 +6,24 @@ from langchain_core.messages import AIMessage
 from tests.unit_tests.fake.chat_model import GenericFakeChatModel
 
 
+class AnyStr(str):
+    def __init__(self) -> None:
+        super().__init__()
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, str)
+
+
 def test_generic_fake_chat_model_invoke() -> None:
     # Will alternate between responding with hello and goodbye
     infinite_cycle = cycle([AIMessage(content="hello"), AIMessage(content="goodbye")])
     model = GenericFakeChatModel(messages=infinite_cycle)
     response = model.invoke("meow")
-    assert response == AIMessage(content="hello")
+    assert response == AIMessage(content="hello", id=AnyStr())
     response = model.invoke("kitty")
-    assert response == AIMessage(content="goodbye")
+    assert response == AIMessage(content="goodbye", id=AnyStr())
     response = model.invoke("meow")
-    assert response == AIMessage(content="hello")
+    assert response == AIMessage(content="hello", id=AnyStr())
 
 
 async def test_generic_fake_chat_model_ainvoke() -> None:
@@ -23,8 +31,8 @@ async def test_generic_fake_chat_model_ainvoke() -> None:
     infinite_cycle = cycle([AIMessage(content="hello"), AIMessage(content="goodbye")])
     model = GenericFakeChatModel(messages=infinite_cycle)
     response = await model.ainvoke("meow")
-    assert response == AIMessage(content="hello")
+    assert response == AIMessage(content="hello", id=AnyStr())
     response = await model.ainvoke("kitty")
-    assert response == AIMessage(content="goodbye")
+    assert response == AIMessage(content="goodbye", id=AnyStr())
     response = await model.ainvoke("meow")
-    assert response == AIMessage(content="hello")
+    assert response == AIMessage(content="hello", id=AnyStr())

backend/tests/unit_tests/test_utils.py

@@ -1,4 +1,5 @@
 from langchain.pydantic_v1 import BaseModel, Field
+from langchain_core.messages import AIMessage
 
 from extraction.utils import update_json_schema
 from server.extraction_runnable import ExtractionExample, _make_prompt_template
@@ -82,7 +83,7 @@ def test_make_prompt_template() -> None:
     )
     prompt = _make_prompt_template(instructions, examples, "name")
     messages = prompt.messages
-    assert 4 == len(messages)
+    assert 5 == len(messages)
     system = messages[0].prompt.template
     assert system.startswith(prefix)
     assert system.endswith(instructions)
@@ -90,11 +91,13 @@ def test_make_prompt_template() -> None:
     example_input = messages[1]
     assert example_input.content == "Test text."
     example_output = messages[2]
-    assert "function_call" in example_output.additional_kwargs
-    assert example_output.additional_kwargs["function_call"]["name"] == "name"
+    assert isinstance(example_output, AIMessage)
+    assert example_output.tool_calls
+    assert len(example_output.tool_calls) == 1
+    assert example_output.tool_calls[0]["name"] == "name"
 
     prompt = _make_prompt_template(instructions, None, "name")
     assert 2 == len(prompt.messages)
 
     prompt = _make_prompt_template(None, examples, "name")
-    assert 4 == len(prompt.messages)
+    assert 5 == len(prompt.messages)