Introduce Llama stack distributions (#22)

* Add distribution CLI scaffolding

* More progress towards `llama distribution install`

* getting closer to a distro definition, distro install + configure works

* Distribution server now functioning

* read existing configuration, save enums properly

* Remove inference uvicorn server entrypoint and llama inference CLI command

* updated dependency and client model name

* Improved exception handling

* local imports for faster cli

* undo a typo, add a passthrough distribution

* implement full-passthrough in the server

* add safety adapters, configuration handling, server + clients

* cleanup, moving stuff to common, nuke utils

* Add a Path() wrapper at the earliest place

* fixes

* Bring agentic system api to toolchain

Add adapter dependencies and resolve adapters using a topological sort

* refactor to reduce size of `agentic_system`

* move straggler files and fix some important existing bugs

* ApiSurface -> Api

* refactor a method out

* Adapter -> Provider

* Make each inference provider into its own subdirectory

* installation fixes

* Rename Distribution -> DistributionSpec, simplify RemoteProviders

* dict key instead of attr

* update inference config to take model and not model_dir

* Fix passthrough streaming, send headers properly not part of body :facepalm

* update safety to use model sku ids and not model dirs

* Update cli_reference.md

* minor fixes

* add DistributionConfig, fix a bug in model download

* Make install + start scripts do proper configuration automatically

* Update CLI_reference

* Nuke fp8_requirements, fold fbgemm into common requirements

* Update README, add newline between API surface configurations

* Refactor download functionality out of the Command so can be reused

* Add `llama model download` alias for `llama download`

* Show message about checksum file so users can check themselves

* Simpler intro statements

* get ollama working

* Reduce a bunch of dependencies from toolchain

Some improvements to the distribution install script

* Avoid using `conda run` since it buffers everything

* update dependencies and rely on LLAMA_TOOLCHAIN_DIR for dev purposes

* add validation for configuration input

* resort imports

* make optional subclasses default to yes for configuration

* Remove additional_pip_packages; move deps to providers

* for inline make 8b model the default

* Add scripts to MANIFEST

* allow installing from test.pypi.org

* Fix #2 to help with testing packages

* Must install llama-models at that same version first

* fix PIP_ARGS

---------

Co-authored-by: Hardik Shah <hjshah@fb.com>
Co-authored-by: Hardik Shah <hjshah@meta.com>

llama_toolchain/agentic_system/utils.py

@@ -0,0 +1,120 @@
+# 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.
+
+import uuid
+from typing import Any, List, Optional
+
+from llama_models.llama3_1.api.datatypes import BuiltinTool, Message, SamplingParams
+
+from llama_toolchain.agentic_system.api import (
+    AgenticSystemCreateRequest,
+    AgenticSystemInstanceConfig,
+    AgenticSystemSessionCreateRequest,
+    AgenticSystemToolDefinition,
+)
+from llama_toolchain.agentic_system.client import AgenticSystemClient
+
+from llama_toolchain.agentic_system.tools.custom.execute import (
+    execute_with_custom_tools,
+)
+from llama_toolchain.safety.api.datatypes import BuiltinShield, ShieldDefinition
+
+
+# TODO: this should move back to the llama-agentic-system repo
+
+
+class AgenticSystemClientWrapper:
+
+    def __init__(self, api, system_id, custom_tools):
+        self.api = api
+        self.system_id = system_id
+        self.custom_tools = custom_tools
+        self.session_id = None
+
+    async def create_session(self, name: str = None):
+        if name is None:
+            name = f"Session-{uuid.uuid4()}"
+
+        response = await self.api.create_agentic_system_session(
+            AgenticSystemSessionCreateRequest(
+                system_id=self.system_id,
+                session_name=name,
+            )
+        )
+        self.session_id = response.session_id
+        return self.session_id
+
+    async def run(self, messages: List[Message], stream: bool = True):
+        async for chunk in execute_with_custom_tools(
+            self.api,
+            self.system_id,
+            self.session_id,
+            messages,
+            self.custom_tools,
+            stream=stream,
+        ):
+            yield chunk
+
+
+async def get_agent_system_instance(
+    host: str,
+    port: int,
+    custom_tools: Optional[List[Any]] = None,
+    disable_safety: bool = False,
+    model: str = "Meta-Llama3.1-8B-Instruct",
+) -> AgenticSystemClientWrapper:
+    custom_tools = custom_tools or []
+
+    api = AgenticSystemClient(base_url=f"http://{host}:{port}")
+
+    tool_definitions = [
+        AgenticSystemToolDefinition(
+            tool_name=BuiltinTool.brave_search,
+        ),
+        AgenticSystemToolDefinition(
+            tool_name=BuiltinTool.wolfram_alpha,
+        ),
+        AgenticSystemToolDefinition(
+            tool_name=BuiltinTool.photogen,
+        ),
+        AgenticSystemToolDefinition(
+            tool_name=BuiltinTool.code_interpreter,
+        ),
+    ] + [t.get_tool_definition() for t in custom_tools]
+
+    if not disable_safety:
+        for t in tool_definitions:
+            t.input_shields = [ShieldDefinition(shield_type=BuiltinShield.llama_guard)]
+            t.output_shields = [
+                ShieldDefinition(shield_type=BuiltinShield.llama_guard),
+                ShieldDefinition(shield_type=BuiltinShield.injection_shield),
+            ]
+
+    create_request = AgenticSystemCreateRequest(
+        model=model,
+        instance_config=AgenticSystemInstanceConfig(
+            instructions="You are a helpful assistant",
+            available_tools=tool_definitions,
+            input_shields=(
+                []
+                if disable_safety
+                else [
+                    ShieldDefinition(shield_type=BuiltinShield.llama_guard),
+                    ShieldDefinition(shield_type=BuiltinShield.jailbreak_shield),
+                ]
+            ),
+            output_shields=(
+                []
+                if disable_safety
+                else [
+                    ShieldDefinition(shield_type=BuiltinShield.llama_guard),
+                ]
+            ),
+            sampling_params=SamplingParams(),
+        ),
+    )
+    create_response = await api.create_agentic_system(create_request)
+    return AgenticSystemClientWrapper(api, create_response.system_id, custom_tools)