API Updates (#73)

* API Keys passed from Client instead of distro configuration

* delete distribution registry

* Rename the "package" word away

* Introduce a "Router" layer for providers

Some providers need to be factorized and considered as thin routing
layers on top of other providers. Consider two examples:

- The inference API should be a routing layer over inference providers,
  routed using the "model" key
- The memory banks API is another instance where various memory bank
  types will be provided by independent providers (e.g., a vector store
  is served by Chroma while a keyvalue memory can be served by Redis or
  PGVector)

This commit introduces a generalized routing layer for this purpose.

* update `apis_to_serve`

* llama_toolchain -> llama_stack

* Codemod from llama_toolchain -> llama_stack

- added providers/registry
- cleaned up api/ subdirectories and moved impls away
- restructured api/api.py
- from llama_stack.apis.<api> import foo should work now
- update imports to do llama_stack.apis.<api>
- update many other imports
- added __init__, fixed some registry imports
- updated registry imports
- create_agentic_system -> create_agent
- AgenticSystem -> Agent

* Moved some stuff out of common/; re-generated OpenAPI spec

* llama-toolchain -> llama-stack (hyphens)

* add control plane API

* add redis adapter + sqlite provider

* move core -> distribution

* Some more toolchain -> stack changes

* small naming shenanigans

* Removing custom tool and agent utilities and moving them client side

* Move control plane to distribution server for now

* Remove control plane from API list

* no codeshield dependency randomly plzzzzz

* Add "fire" as a dependency

* add back event loggers

* stack configure fixes

* use brave instead of bing in the example client

* add init file so it gets packaged

* add init files so it gets packaged

* Update MANIFEST

* bug fix

---------

Co-authored-by: Hardik Shah <hjshah@fb.com>
Co-authored-by: Xi Yan <xiyan@meta.com>
Co-authored-by: Ashwin Bharambe <ashwin@meta.com>

llama_stack/distribution/control_plane/adapters/redis/redis.py

@@ -0,0 +1,62 @@
+# 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 datetime import datetime, timedelta
+from typing import Any, List, Optional
+
+from redis.asyncio import Redis
+
+from llama_stack.apis.control_plane import *  # noqa: F403
+
+
+from .config import RedisImplConfig
+
+
+class RedisControlPlaneAdapter(ControlPlane):
+    def __init__(self, config: RedisImplConfig):
+        self.config = config
+
+    async def initialize(self) -> None:
+        self.redis = Redis.from_url(self.config.url)
+
+    def _namespaced_key(self, key: str) -> str:
+        if not self.config.namespace:
+            return key
+        return f"{self.config.namespace}:{key}"
+
+    async def set(
+        self, key: str, value: Any, expiration: Optional[datetime] = None
+    ) -> None:
+        key = self._namespaced_key(key)
+        await self.redis.set(key, value)
+        if expiration:
+            await self.redis.expireat(key, expiration)
+
+    async def get(self, key: str) -> Optional[ControlPlaneValue]:
+        key = self._namespaced_key(key)
+        value = await self.redis.get(key)
+        if value is None:
+            return None
+        ttl = await self.redis.ttl(key)
+        expiration = datetime.now() + timedelta(seconds=ttl) if ttl > 0 else None
+        return ControlPlaneValue(key=key, value=value, expiration=expiration)
+
+    async def delete(self, key: str) -> None:
+        key = self._namespaced_key(key)
+        await self.redis.delete(key)
+
+    async def range(self, start_key: str, end_key: str) -> List[ControlPlaneValue]:
+        start_key = self._namespaced_key(start_key)
+        end_key = self._namespaced_key(end_key)
+
+        keys = await self.redis.keys(f"{start_key}*")
+        result = []
+        for key in keys:
+            if key <= end_key:
+                value = await self.get(key)
+                if value:
+                    result.append(value)
+        return result