Source code for bentoml._internal.bento.bento

from __future__ import annotations

import os
import typing as t
import logging
from typing import TYPE_CHECKING
from datetime import datetime
from datetime import timezone

import fs
import attr
import yaml
import fs.osfs
import fs.errors
import fs.mirror
from fs.copy import copy_file
from cattr.gen import override
from cattr.gen import make_dict_structure_fn
from cattr.gen import make_dict_unstructure_fn
from simple_di import inject
from simple_di import Provide

from ..tag import Tag
from import Store
from import StoreItem
from ..types import PathType
from ..utils import bentoml_cattr
from ..utils import copy_file_to_fs_folder
from ..models import ModelStore
from ..runner import Runner
from ...exceptions import InvalidArgument
from ...exceptions import BentoMLException
from .build_config import CondaOptions
from .build_config import BentoPathSpec
from .build_config import DockerOptions
from .build_config import PythonOptions
from .build_config import BentoBuildConfig
from ..configuration import BENTOML_VERSION
from ..configuration.containers import BentoMLContainer

    from fs.base import FS

    from ..models import Model
    from ..service import Service
    from ..service.inference_api import InferenceAPI

logger = logging.getLogger(__name__)

BENTO_YAML_FILENAME = "bento.yaml"
DEFAULT_BENTO_BUILD_FILE = "bentofile.yaml"

API_INFO_MD = "| POST [`/{api}`](#{link}) | {input} | {output} |"

| InferenceAPI | Input | Output |
| ------------ | ----- | ------ |

def create_inference_api_table(svc: Service) -> str:
    from ..service.openapi import APP_TAG

    contents = [
            link=f"operations-{' ','_')}-{}__{}",  # follows operationId from OpenAPI
        for api in svc.apis.values()
    return INFERENCE_TABLE_MD.format(content="\n".join(contents))

def get_default_svc_readme(svc: Service, svc_version: str | None = None) -> str:
    if svc.bento:
        bentoml_version =
        bentoml_version = BENTOML_VERSION

    if not svc_version:
        if svc.tag and svc.tag.version:
            svc_version = svc.tag.version
            svc_version = "None"

    doc = f"""\
# {}:{svc_version}

[![BentoML GitHub Repo](](
[![Twitter Follow](](

This is a Machine Learning Service created with BentoML."""

    if svc.apis:
        doc += f"\n{create_inference_api_table(svc)}\n\n"

    doc += """

## Help

* [📖 Documentation]( Learn how to use BentoML.
* [💬 Community]( Join the BentoML Slack community.
* [🐛 GitHub Issues]( Report bugs and feature requests.
* Tip: you can also [customize this README](
    # TODO: add links to documentation that may help with API client development
    return doc

[docs]@attr.define(repr=False, auto_attribs=False) class Bento(StoreItem): _tag: Tag = attr.field() __fs: FS = attr.field() _info: BentoInfo _model_store: ModelStore _doc: t.Optional[str] = None @staticmethod def _export_ext() -> str: return "bento" @__fs.validator # type:ignore # attrs validators not supported by pyright def check_fs(self, _attr: t.Any, new_fs: FS): try: new_fs.makedir("models", recreate=True) except fs.errors.ResourceReadOnly: # when we import a tarfile, it will be read-only, so just skip the step where we create # the models folder. pass self._model_store = ModelStore(new_fs.opendir("models")) def __init__(self, tag: Tag, bento_fs: "FS", info: "BentoInfo"): self._tag = tag self.__fs = bento_fs self.check_fs(None, bento_fs) self._info = info @property def tag(self) -> Tag: return self._tag @property def _fs(self) -> FS: return self.__fs @property def info(self) -> BentoInfo: return self._info @classmethod @inject def create( cls, build_config: BentoBuildConfig, version: t.Optional[str] = None, build_ctx: t.Optional[str] = None, ) -> Bento: from ..service.loader import import_service build_ctx = ( os.getcwd() if build_ctx is None else os.path.realpath(os.path.expanduser(build_ctx)) ) if not os.path.isdir(build_ctx): raise InvalidArgument( f"Bento build context {build_ctx} does not exist or is not a directory." ) # This also verifies that svc can be imported correctly svc = import_service( build_config.service, working_dir=build_ctx, standalone_load=True ) tag = Tag(, version) if version is None: tag = tag.make_new_version() 'Building BentoML service "%s" from build context "%s".', tag, build_ctx ) bento_fs = fs.open_fs(f"temp://bentoml_bento_{}") ctx_fs = fs.open_fs(build_ctx) models: t.Set[Model] = set() # Add all models required by the service for model in svc.models: models.add(model) # Add all models required by service runners for runner in svc.runners: for model in runner.models: models.add(model) bento_fs.makedir("models", recreate=True) bento_model_store = ModelStore(bento_fs.opendir("models")) for model in models:'Packing model "%s"', model.tag) model._save(bento_model_store) # Apply default build options build_config = build_config.with_defaults() # create ignore specs specs = BentoPathSpec(build_config.include, build_config.exclude) # type: ignore (unfinished attrs converter type) # Copy all files base on include and exclude, into `src` directory relpaths = [s for s in build_config.include if s.startswith("../")] if len(relpaths) != 0: raise InvalidArgument( "Paths outside of the build context directory cannot be included; use a symlink or copy those files into the working directory manually." ) bento_fs.makedir(BENTO_PROJECT_DIR_NAME) target_fs = bento_fs.opendir(BENTO_PROJECT_DIR_NAME) for dir_path, _, files in ctx_fs.walk(): for f in files: path = fs.path.combine(dir_path,"/") if specs.includes( path, recurse_exclude_spec=filter( lambda s: fs.path.isparent(s[0], dir_path), specs.from_path(build_ctx), ), ): target_fs.makedirs(dir_path, recreate=True) copy_file(ctx_fs, path, target_fs, path) # NOTE: we need to generate both Python and Conda # first to make sure we can generate the Dockerfile correctly. build_config.python.write_to_bento(bento_fs, build_ctx) build_config.conda.write_to_bento(bento_fs, build_ctx) build_config.docker.write_to_bento(bento_fs, build_ctx, build_config.conda) # Create `` file if build_config.description is None: with, "w", encoding="utf-8") as f: f.write(get_default_svc_readme(svc, svc_version=tag.version)) else: if build_config.description.startswith("file:"): file_name = build_config.description[5:].strip() copy_file_to_fs_folder( file_name, bento_fs, dst_filename=BENTO_README_FILENAME ) else: with, "w") as f: f.write(build_config.description) # Create 'apis/openapi.yaml' file bento_fs.makedir("apis") with"apis", "openapi.yaml"), "w") as f: yaml.dump(svc.openapi_spec, f) res = Bento( tag, bento_fs, BentoInfo( tag=tag, service=svc, # type: ignore # attrs converters do not typecheck labels=build_config.labels, models=[BentoModelInfo.from_bento_model(m) for m in models], runners=[BentoRunnerInfo.from_runner(r) for r in svc.runners], apis=[ BentoApiInfo.from_inference_api(api) for api in svc.apis.values() ], docker=build_config.docker, python=build_config.python, conda=build_config.conda, ), ) # Create bento.yaml res.flush_info() try: res.validate() except BentoMLException as e: raise BentoMLException(f"Failed to create {res!s}: {e}") from None return res @classmethod def from_fs(cls, item_fs: FS) -> Bento: try: with, "r", encoding="utf-8") as bento_yaml: info = BentoInfo.from_yaml_file(bento_yaml) except fs.errors.ResourceNotFound: raise BentoMLException( f"Failed to load bento because it does not contain a '{BENTO_YAML_FILENAME}'" ) res = cls(info.tag, item_fs, info) try: res.validate() except BentoMLException as e: raise BentoMLException(f"Failed to load bento: {e}") from None return res @property def path(self) -> str: return self.path_of("/")
[docs] def path_of(self, item: str) -> str: return self._fs.getsyspath(item)
def flush_info(self): with, "w") as bento_yaml: @property def doc(self) -> str: if self._doc is not None: return self._doc with, "r") as readme_md: self._doc = str( return self._doc @property def creation_time(self) -> datetime: return @inject def save( self, bento_store: "BentoStore" = Provide[BentoMLContainer.bento_store], ) -> "Bento": try: self.validate() except BentoMLException as e: raise BentoMLException(f"Failed to save {self!s}: {e}") from None with bento_store.register(self.tag) as bento_path: out_fs = fs.open_fs(bento_path, create=True, writeable=True) fs.mirror.mirror(self._fs, out_fs, copy_if_newer=False) self._fs.close() self.__fs = out_fs return self def validate(self): if not self._fs.isfile(BENTO_YAML_FILENAME): raise BentoMLException( f"{self!s} does not contain a {BENTO_YAML_FILENAME}." ) def __str__(self): return f'Bento(tag="{self.tag}")'
class BentoStore(Store[Bento]): def __init__(self, base_path: t.Union[PathType, "FS"]): super().__init__(base_path, Bento) @attr.frozen class BentoRunnerInfo: name: str runnable_type: str models: t.List[str] = attr.field(factory=list) resource_config: t.Optional[t.Dict[str, t.Any]] = attr.field(default=None) @classmethod def from_runner(cls, r: Runner) -> BentoRunnerInfo: return cls(, runnable_type=r.runnable_class.__name__, models=[str(model.tag) for model in r.models], resource_config=r.resource_config, ) @attr.frozen class BentoApiInfo: name: str input_type: str output_type: str @classmethod def from_inference_api(cls, api: InferenceAPI) -> BentoApiInfo: return cls(, input_type=api.input.__class__.__name__, output_type=api.output.__class__.__name__, ) @attr.frozen class BentoModelInfo: tag: Tag = attr.field(converter=Tag.from_taglike) module: str creation_time: datetime @classmethod def from_bento_model(cls, bento_model: Model) -> BentoModelInfo: return cls( tag=bento_model.tag,,, ) @attr.frozen(repr=False) class BentoInfo: # for backward compatibility in case new fields are added to BentoInfo. __forbid_extra_keys__ = False # omit field in yaml file if it is not provided by the user. __omit_if_default__ = True tag: Tag service: str = attr.field( converter=lambda svc: svc if isinstance(svc, str) else svc._import_str ) name: str = attr.field(init=False) version: str = attr.field(init=False) # using factory explicitly instead of default because omit_if_default is enabled for BentoInfo bentoml_version: str = attr.field(factory=lambda: BENTOML_VERSION) creation_time: datetime = attr.field(factory=lambda: labels: t.Dict[str, t.Any] = attr.field(factory=dict) models: t.List[BentoModelInfo] = attr.field(factory=list) runners: t.List[BentoRunnerInfo] = attr.field(factory=list) apis: t.List[BentoApiInfo] = attr.field(factory=list) docker: DockerOptions = attr.field(factory=lambda: DockerOptions().with_defaults()) python: PythonOptions = attr.field(factory=lambda: PythonOptions().with_defaults()) conda: CondaOptions = attr.field(factory=lambda: CondaOptions().with_defaults()) def __attrs_post_init__(self): # Direct set is not available when frozen=True object.__setattr__(self, "name", object.__setattr__(self, "version", self.tag.version) try: self.validate() except BentoMLException as e: raise BentoMLException(f"Failed to initialize {self!s}: {e}") from None def to_dict(self) -> t.Dict[str, t.Any]: return bentoml_cattr.unstructure(self) def dump(self, stream: t.IO[t.Any]): return yaml.dump(self, stream, sort_keys=False) @classmethod def from_yaml_file(cls, stream: t.IO[t.Any]) -> BentoInfo: try: yaml_content = yaml.safe_load(stream) except yaml.YAMLError as exc: logger.error("Error while parsing YAML file: %s", exc) raise assert yaml_content is not None yaml_content["tag"] = Tag(yaml_content["name"], yaml_content["version"]) del yaml_content["name"] del yaml_content["version"] # For backwards compatibility for bentos created prior to version 1.0.0rc1 if "runners" in yaml_content: runners = yaml_content["runners"] for r in runners: if "runner_type" in r: # BentoRunnerInfo prior to 1.0.0rc1 release r["runnable_type"] = r["runner_type"] del r["runner_type"] if "model_runner_module" in r: del r["model_runner_module"] if "models" in yaml_content: # For backwards compatibility for bentos created prior to version 1.0.0a7 models = yaml_content["models"] if models and len(models) > 0 and isinstance(models[0], str): yaml_content["models"] = list( map( lambda model_tag: { "tag": model_tag, "module": "unknown", "creation_time": datetime.fromordinal(1), }, models, ) ) try: return bentoml_cattr.structure(yaml_content, cls) except KeyError as e: raise BentoMLException(f"Missing field {e} in {BENTO_YAML_FILENAME}") def validate(self): # Validate bento.yml file schema, content, bentoml version, etc ... bentoml_cattr.register_structure_hook_func( lambda cls: issubclass(cls, BentoInfo), make_dict_structure_fn( BentoInfo, bentoml_cattr, name=override(omit=True), version=override(omit=True), ), ) bentoml_cattr.register_unstructure_hook( BentoInfo, # Ignore tag, tag is saved via the name and version field make_dict_unstructure_fn(BentoInfo, bentoml_cattr, tag=override(omit=True)), ) def _BentoInfo_dumper(dumper: yaml.Dumper, info: BentoInfo) -> yaml.Node: return dumper.represent_dict(info.to_dict()) yaml.add_representer(BentoInfo, _BentoInfo_dumper) # type: ignore (incomplete yaml types)