llama-stack-mirror/src/llama_stack/core/inspect.py
Charlie Doern 840ad75fe9
feat: split API and provider specs into separate llama-stack-api pkg (#3895)
# What does this PR do?

Extract API definitions and provider specifications into a standalone
llama-stack-api package that can be published to PyPI independently of
the main llama-stack server.


see: https://github.com/llamastack/llama-stack/pull/2978 and
https://github.com/llamastack/llama-stack/pull/2978#issuecomment-3145115942

Motivation

External providers currently import from llama-stack, which overrides
the installed version and causes dependency conflicts. This separation
allows external providers to:

- Install only the type definitions they need without server
dependencies
- Avoid version conflicts with the installed llama-stack package
- Be versioned and released independently

This enables us to re-enable external provider module tests that were
previously blocked by these import conflicts.

Changes

- Created llama-stack-api package with minimal dependencies (pydantic,
jsonschema)
- Moved APIs, providers datatypes, strong_typing, and schema_utils
- Updated all imports from llama_stack.* to llama_stack_api.*
- Configured local editable install for development workflow
- Updated linting and type-checking configuration for both packages

Next Steps

- Publish llama-stack-api to PyPI
- Update external provider dependencies
- Re-enable external provider module tests


Pre-cursor PRs to this one:

- #4093 
- #3954 
- #4064 

These PRs moved key pieces _out_ of the Api pkg, limiting the scope of
change here.


relates to #3237 

## Test Plan

Package builds successfully and can be imported independently. All
pre-commit hooks pass with expected exclusions maintained.

---------

Signed-off-by: Charlie Doern <cdoern@redhat.com>
2025-11-13 11:51:17 -08:00

98 lines
3.6 KiB
Python

# 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 importlib.metadata import version
from llama_stack_api import (
HealthInfo,
HealthStatus,
Inspect,
ListRoutesResponse,
RouteInfo,
VersionInfo,
)
from pydantic import BaseModel
from llama_stack.core.datatypes import StackRunConfig
from llama_stack.core.external import load_external_apis
from llama_stack.core.server.routes import get_all_api_routes
class DistributionInspectConfig(BaseModel):
run_config: StackRunConfig
async def get_provider_impl(config, deps):
impl = DistributionInspectImpl(config, deps)
await impl.initialize()
return impl
class DistributionInspectImpl(Inspect):
def __init__(self, config: DistributionInspectConfig, deps):
self.config = config
self.deps = deps
async def initialize(self) -> None:
pass
async def list_routes(self, api_filter: str | None = None) -> ListRoutesResponse:
run_config: StackRunConfig = self.config.run_config
# Helper function to determine if a route should be included based on api_filter
def should_include_route(webmethod) -> bool:
if api_filter is None:
# Default: only non-deprecated APIs
return not webmethod.deprecated
elif api_filter == "deprecated":
# Special filter: show deprecated routes regardless of their actual level
return bool(webmethod.deprecated)
else:
# Filter by API level (non-deprecated routes only)
return not webmethod.deprecated and webmethod.level == api_filter
ret = []
external_apis = load_external_apis(run_config)
all_endpoints = get_all_api_routes(external_apis)
for api, endpoints in all_endpoints.items():
# Always include provider and inspect APIs, filter others based on run config
if api.value in ["providers", "inspect"]:
ret.extend(
[
RouteInfo(
route=e.path,
method=next(iter([m for m in e.methods if m != "HEAD"])),
provider_types=[], # These APIs don't have "real" providers - they're internal to the stack
)
for e, webmethod in endpoints
if e.methods is not None and should_include_route(webmethod)
]
)
else:
providers = run_config.providers.get(api.value, [])
if providers: # Only process if there are providers for this API
ret.extend(
[
RouteInfo(
route=e.path,
method=next(iter([m for m in e.methods if m != "HEAD"])),
provider_types=[p.provider_type for p in providers],
)
for e, webmethod in endpoints
if e.methods is not None and should_include_route(webmethod)
]
)
return ListRoutesResponse(data=ret)
async def health(self) -> HealthInfo:
return HealthInfo(status=HealthStatus.OK)
async def version(self) -> VersionInfo:
return VersionInfo(version=version("llama-stack"))
async def shutdown(self) -> None:
pass