llama_toolchain/distribution -> llama_toolchain/core

llama_toolchain/core/package.py

@@ -0,0 +1,181 @@
+# 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 json
+import os
+from datetime import datetime
+from enum import Enum
+from typing import Dict, List, Optional
+
+import pkg_resources
+import yaml
+from pydantic import BaseModel
+
+from termcolor import cprint
+
+from llama_toolchain.common.config_dirs import BUILDS_BASE_DIR
+from llama_toolchain.core.datatypes import *  # noqa: F403
+
+from llama_toolchain.common.exec import run_with_pty
+from llama_toolchain.common.serialize import EnumEncoder
+from llama_toolchain.core.distribution import api_providers
+
+
+class BuildType(Enum):
+    container = "container"
+    conda_env = "conda_env"
+
+    def descriptor(self) -> str:
+        return "image" if self == self.container else "env"
+
+
+class Dependencies(BaseModel):
+    pip_packages: List[str]
+    docker_image: Optional[str] = None
+
+
+def get_dependencies(
+    provider: ProviderSpec, dependencies: Dict[str, ProviderSpec]
+) -> Dependencies:
+    from llama_toolchain.core.distribution import SERVER_DEPENDENCIES
+
+    pip_packages = provider.pip_packages
+    for dep in dependencies.values():
+        if dep.docker_image:
+            raise ValueError(
+                "You can only have the root provider specify a docker image"
+            )
+        pip_packages.extend(dep.pip_packages)
+
+    return Dependencies(
+        docker_image=provider.docker_image,
+        pip_packages=pip_packages + SERVER_DEPENDENCIES,
+    )
+
+
+class ApiInput(BaseModel):
+    api: Api
+    provider: str
+    dependencies: Dict[str, ProviderSpec]
+
+
+def build_package(
+    api_inputs: List[ApiInput],
+    build_type: BuildType,
+    name: str,
+    distribution_id: Optional[str] = None,
+    docker_image: Optional[str] = None,
+):
+    is_stack = len(api_inputs) > 1
+    if is_stack:
+        if not distribution_id:
+            raise ValueError(
+                "You must specify a distribution name when building the Llama Stack"
+            )
+
+    api1 = api_inputs[0]
+
+    provider = distribution_id if is_stack else api1.provider
+    api_or_stack = "stack" if is_stack else api1.api.value
+
+    build_dir = BUILDS_BASE_DIR / api_or_stack
+    os.makedirs(build_dir, exist_ok=True)
+
+    package_name = f"{build_type.descriptor()}-{provider}-{name}"
+    package_name = package_name.replace("::", "-")
+    package_file = build_dir / f"{package_name}.yaml"
+
+    all_providers = api_providers()
+
+    package_deps = Dependencies(
+        docker_image=docker_image or "python:3.10-slim",
+        pip_packages=[],
+    )
+    stub_config = {}
+    for api_input in api_inputs:
+        api = api_input.api
+        providers_for_api = all_providers[api]
+        if api_input.provider not in providers_for_api:
+            raise ValueError(
+                f"Provider `{api_input.provider}` is not available for API `{api}`"
+            )
+
+        deps = get_dependencies(
+            providers_for_api[api_input.provider],
+            api_input.dependencies,
+        )
+        if deps.docker_image:
+            raise ValueError("A stack's dependencies cannot have a docker image")
+        package_deps.pip_packages.extend(deps.pip_packages)
+
+        stub_config[api.value] = {"provider_id": api_input.provider}
+
+    if package_file.exists():
+        cprint(
+            f"Build `{package_name}` exists; will reconfigure",
+            color="yellow",
+        )
+        c = PackageConfig(**yaml.safe_load(package_file.read_text()))
+        for api_str, new_config in stub_config.items():
+            if api_str not in c.providers:
+                c.providers[api_str] = new_config
+            else:
+                existing_config = c.providers[api_str]
+                if existing_config["provider_id"] != new_config["provider_id"]:
+                    cprint(
+                        f"Provider `{api_str}` has changed from `{existing_config}` to `{new_config}`",
+                        color="yellow",
+                    )
+                    c.providers[api_str] = new_config
+    else:
+        c = PackageConfig(
+            built_at=datetime.now(),
+            package_name=package_name,
+            providers=stub_config,
+        )
+
+    c.distribution_id = distribution_id
+    c.docker_image = package_name if build_type == BuildType.container else None
+    c.conda_env = package_name if build_type == BuildType.conda_env else None
+
+    with open(package_file, "w") as f:
+        to_write = json.loads(json.dumps(c.dict(), cls=EnumEncoder))
+        f.write(yaml.dump(to_write, sort_keys=False))
+
+    if build_type == BuildType.container:
+        script = pkg_resources.resource_filename(
+            "llama_toolchain", "distribution/build_container.sh"
+        )
+        args = [
+            script,
+            api_or_stack,
+            package_name,
+            package_deps.docker_image,
+            " ".join(package_deps.pip_packages),
+        ]
+    else:
+        script = pkg_resources.resource_filename(
+            "llama_toolchain", "distribution/build_conda_env.sh"
+        )
+        args = [
+            script,
+            api_or_stack,
+            package_name,
+            " ".join(package_deps.pip_packages),
+        ]
+
+    return_code = run_with_pty(args)
+    if return_code != 0:
+        cprint(
+            f"Failed to build target {package_name} with return code {return_code}",
+            color="red",
+        )
+        return
+
+    cprint(
+        f"Target `{package_name}` built with configuration at {str(package_file)}",
+        color="green",
+    )