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/cli/stack/run.py

@@ -0,0 +1,88 @@
+# 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 argparse
+
+from pathlib import Path
+
+import pkg_resources
+import yaml
+
+from llama_stack.cli.subcommand import Subcommand
+from llama_stack.distribution.datatypes import *  # noqa: F403
+
+
+class StackRun(Subcommand):
+    def __init__(self, subparsers: argparse._SubParsersAction):
+        super().__init__()
+        self.parser = subparsers.add_parser(
+            "run",
+            prog="llama stack run",
+            description="""start the server for a Llama Stack Distribution. You should have already built (or downloaded) and configured the distribution.""",
+            formatter_class=argparse.RawTextHelpFormatter,
+        )
+        self._add_arguments()
+        self.parser.set_defaults(func=self._run_stack_run_cmd)
+
+    def _add_arguments(self):
+        self.parser.add_argument(
+            "config",
+            type=str,
+            help="Path to config file to use for the run",
+        )
+        self.parser.add_argument(
+            "--port",
+            type=int,
+            help="Port to run the server on. Defaults to 5000",
+            default=5000,
+        )
+        self.parser.add_argument(
+            "--disable-ipv6",
+            action="store_true",
+            help="Disable IPv6 support",
+            default=False,
+        )
+
+    def _run_stack_run_cmd(self, args: argparse.Namespace) -> None:
+        from llama_stack.distribution.utils.exec import run_with_pty
+
+        if not args.config:
+            self.parser.error("Must specify a config file to run")
+            return
+
+        path = args.config
+        config_file = Path(path)
+
+        if not config_file.exists():
+            self.parser.error(
+                f"File {str(config_file)} does not exist. Did you run `llama stack build`?"
+            )
+            return
+
+        with open(config_file, "r") as f:
+            config = StackRunConfig(**yaml.safe_load(f))
+
+        if config.docker_image:
+            script = pkg_resources.resource_filename(
+                "llama_stack",
+                "distribution/start_container.sh",
+            )
+            run_args = [script, config.docker_image]
+        else:
+            script = pkg_resources.resource_filename(
+                "llama_stack",
+                "distribution/start_conda_env.sh",
+            )
+            run_args = [
+                script,
+                config.conda_env,
+            ]
+
+        run_args.extend([str(config_file), str(args.port)])
+        if args.disable_ipv6:
+            run_args.append("--disable-ipv6")
+
+        run_with_pty(run_args)