llama-stack/llama_stack/templates/dev/dev.py
Ashwin Bharambe 6609d4ada4
feat: allow conditionally enabling providers in run.yaml (#1321)
# What does this PR do?

We want to bundle a bunch of (typically remote) providers in a distro
template and be able to configure them "on the fly" via environment
variables. So far, we have been able to do this with simple env var
replacements. However, sometimes you want to only conditionally enable
providers (because the relevant remote services may not be alive, or
relevant.) This was not possible until now.

To aid this, we add a simple (bash-like) env var replacement
enhancement: `${env.FOO+bar}` evaluates to `bar` if the variable is SET
and evaluates to empty string if it is not. On top of that, we update
our main resolver to ignore any provider whose ID is null.

This allows using the distro like this:

```bash
llama stack run dev --env CHROMADB_URL=http://localhost:6001 --env ENABLE_CHROMADB=1
```

when only Chroma is UP. This disables the other `pgvector` provider in
the run configuration.


## Test Plan

Hard code `chromadb` as the vector io provider inside
`test_vector_io.py` and run:

```bash
LLAMA_STACK_BASE_URL=http://localhost:8321 pytest -s -v tests/client-sdk/vector_io/ --embedding-model all-MiniLM-L6-v2
```
2025-03-01 11:19:14 -08:00

183 lines
6.9 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 typing import List, Tuple
from llama_stack.apis.models.models import ModelType
from llama_stack.distribution.datatypes import (
ModelInput,
Provider,
ShieldInput,
ToolGroupInput,
)
from llama_stack.providers.inline.inference.sentence_transformers import (
SentenceTransformersInferenceConfig,
)
from llama_stack.providers.inline.vector_io.sqlite_vec.config import SQLiteVectorIOConfig
from llama_stack.providers.remote.inference.anthropic.config import AnthropicConfig
from llama_stack.providers.remote.inference.anthropic.models import MODEL_ENTRIES as ANTHROPIC_MODEL_ENTRIES
from llama_stack.providers.remote.inference.fireworks.config import FireworksImplConfig
from llama_stack.providers.remote.inference.fireworks.models import MODEL_ENTRIES as FIREWORKS_MODEL_ENTRIES
from llama_stack.providers.remote.inference.gemini.config import GeminiConfig
from llama_stack.providers.remote.inference.gemini.models import MODEL_ENTRIES as GEMINI_MODEL_ENTRIES
from llama_stack.providers.remote.inference.groq.config import GroqConfig
from llama_stack.providers.remote.inference.groq.models import MODEL_ENTRIES as GROQ_MODEL_ENTRIES
from llama_stack.providers.remote.inference.openai.config import OpenAIConfig
from llama_stack.providers.remote.inference.openai.models import MODEL_ENTRIES as OPENAI_MODEL_ENTRIES
from llama_stack.providers.remote.vector_io.chroma.config import ChromaVectorIOConfig
from llama_stack.providers.remote.vector_io.pgvector.config import PGVectorVectorIOConfig
from llama_stack.templates.template import DistributionTemplate, RunConfigSettings, get_model_registry
def get_inference_providers() -> Tuple[List[Provider], List[ModelInput]]:
# in this template, we allow each API key to be optional
providers = [
(
"openai",
OPENAI_MODEL_ENTRIES,
OpenAIConfig.sample_run_config(api_key="${env.OPENAI_API_KEY:}"),
),
(
"fireworks",
FIREWORKS_MODEL_ENTRIES,
FireworksImplConfig.sample_run_config(api_key="${env.FIREWORKS_API_KEY:}"),
),
(
"anthropic",
ANTHROPIC_MODEL_ENTRIES,
AnthropicConfig.sample_run_config(api_key="${env.ANTHROPIC_API_KEY:}"),
),
(
"gemini",
GEMINI_MODEL_ENTRIES,
GeminiConfig.sample_run_config(api_key="${env.GEMINI_API_KEY:}"),
),
(
"groq",
GROQ_MODEL_ENTRIES,
GroqConfig.sample_run_config(api_key="${env.GROQ_API_KEY:}"),
),
]
inference_providers = []
available_models = {}
for provider_id, model_entries, config in providers:
inference_providers.append(
Provider(
provider_id=provider_id,
provider_type=f"remote::{provider_id}",
config=config,
)
)
available_models[provider_id] = model_entries
return inference_providers, available_models
def get_distribution_template() -> DistributionTemplate:
inference_providers, available_models = get_inference_providers()
providers = {
"inference": ([p.provider_type for p in inference_providers] + ["inline::sentence-transformers"]),
"vector_io": ["inline::sqlite-vec", "remote::chromadb", "remote::pgvector"],
"safety": ["inline::llama-guard"],
"agents": ["inline::meta-reference"],
"telemetry": ["inline::meta-reference"],
"eval": ["inline::meta-reference"],
"datasetio": ["remote::huggingface", "inline::localfs"],
"scoring": ["inline::basic", "inline::llm-as-judge", "inline::braintrust"],
"tool_runtime": [
"remote::brave-search",
"remote::tavily-search",
"inline::code-interpreter",
"inline::rag-runtime",
"remote::model-context-protocol",
],
}
name = "dev"
vector_io_providers = [
Provider(
provider_id="sqlite-vec",
provider_type="inline::sqlite-vec",
config=SQLiteVectorIOConfig.sample_run_config(f"distributions/{name}"),
),
Provider(
provider_id="${env.ENABLE_CHROMADB+chromadb}",
provider_type="remote::chromadb",
config=ChromaVectorIOConfig.sample_run_config(url="${env.CHROMADB_URL:}"),
),
Provider(
provider_id="${env.ENABLE_PGVECTOR+pgvector}",
provider_type="remote::pgvector",
config=PGVectorVectorIOConfig.sample_run_config(
db="${env.PGVECTOR_DB:}",
user="${env.PGVECTOR_USER:}",
password="${env.PGVECTOR_PASSWORD:}",
),
),
]
embedding_provider = Provider(
provider_id="sentence-transformers",
provider_type="inline::sentence-transformers",
config=SentenceTransformersInferenceConfig.sample_run_config(),
)
default_tool_groups = [
ToolGroupInput(
toolgroup_id="builtin::websearch",
provider_id="tavily-search",
),
ToolGroupInput(
toolgroup_id="builtin::rag",
provider_id="rag-runtime",
),
ToolGroupInput(
toolgroup_id="builtin::code_interpreter",
provider_id="code-interpreter",
),
]
embedding_model = ModelInput(
model_id="all-MiniLM-L6-v2",
provider_id=embedding_provider.provider_id,
model_type=ModelType.embedding,
metadata={
"embedding_dimension": 384,
},
)
default_models = get_model_registry(available_models)
return DistributionTemplate(
name=name,
distro_type="self_hosted",
description="Distribution for running e2e tests in CI",
container_image=None,
template_path=None,
providers=providers,
available_models_by_provider=available_models,
run_configs={
"run.yaml": RunConfigSettings(
provider_overrides={
"inference": inference_providers + [embedding_provider],
"vector_io": vector_io_providers,
},
default_models=default_models + [embedding_model],
default_tool_groups=default_tool_groups,
default_shields=[ShieldInput(shield_id="meta-llama/Llama-Guard-3-8B")],
),
},
run_config_env_vars={
"LLAMA_STACK_PORT": (
"5001",
"Port for the Llama Stack distribution server",
),
"FIREWORKS_API_KEY": (
"",
"Fireworks API Key",
),
"OPENAI_API_KEY": (
"",
"OpenAI API Key",
),
},
)