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/providers/impls/meta_reference/telemetry/console.py

@@ -0,0 +1,89 @@
+# 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 typing import Optional
+
+from llama_stack.apis.telemetry import *  # noqa: F403
+from .config import ConsoleConfig
+
+
+class ConsoleTelemetryImpl(Telemetry):
+    def __init__(self, config: ConsoleConfig) -> None:
+        self.config = config
+        self.spans = {}
+
+    async def initialize(self) -> None: ...
+
+    async def shutdown(self) -> None: ...
+
+    async def log_event(self, event: Event):
+        if (
+            isinstance(event, StructuredLogEvent)
+            and event.payload.type == StructuredLogType.SPAN_START.value
+        ):
+            self.spans[event.span_id] = event.payload
+
+        names = []
+        span_id = event.span_id
+        while True:
+            span_payload = self.spans.get(span_id)
+            if not span_payload:
+                break
+
+            names = [span_payload.name] + names
+            span_id = span_payload.parent_span_id
+
+        span_name = ".".join(names) if names else None
+
+        formatted = format_event(event, span_name)
+        if formatted:
+            print(formatted)
+
+    async def get_trace(self, trace_id: str) -> Trace:
+        raise NotImplementedError()
+
+
+COLORS = {
+    "reset": "\033[0m",
+    "bold": "\033[1m",
+    "dim": "\033[2m",
+    "red": "\033[31m",
+    "green": "\033[32m",
+    "yellow": "\033[33m",
+    "blue": "\033[34m",
+    "magenta": "\033[35m",
+    "cyan": "\033[36m",
+    "white": "\033[37m",
+}
+
+SEVERITY_COLORS = {
+    LogSeverity.VERBOSE: COLORS["dim"] + COLORS["white"],
+    LogSeverity.DEBUG: COLORS["cyan"],
+    LogSeverity.INFO: COLORS["green"],
+    LogSeverity.WARN: COLORS["yellow"],
+    LogSeverity.ERROR: COLORS["red"],
+    LogSeverity.CRITICAL: COLORS["bold"] + COLORS["red"],
+}
+
+
+def format_event(event: Event, span_name: str) -> Optional[str]:
+    timestamp = event.timestamp.strftime("%H:%M:%S.%f")[:-3]
+    span = ""
+    if span_name:
+        span = f"{COLORS['magenta']}[{span_name}]{COLORS['reset']} "
+    if isinstance(event, UnstructuredLogEvent):
+        severity_color = SEVERITY_COLORS.get(event.severity, COLORS["reset"])
+        return (
+            f"{COLORS['dim']}{timestamp}{COLORS['reset']} "
+            f"{severity_color}[{event.severity.name}]{COLORS['reset']} "
+            f"{span}"
+            f"{event.message}"
+        )
+
+    elif isinstance(event, StructuredLogEvent):
+        return None
+
+    return f"Unknown event type: {event}"