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feast/sdk/python/feast/repo_operations.py at update-docs · feast-dev/feast · GitHub

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import base64

import importlib

import json

import logging

import os

import random

import re

import sys

import tempfile

from importlib.abc import Loader

from importlib.machinery import ModuleSpec

from pathlib import Path

from typing import List, Optional, Set, Union

import click

from click.exceptions import BadParameter

from feast import PushSource

from feast.batch_feature_view import BatchFeatureView

from feast.constants import FEATURE_STORE_YAML_ENV_NAME

from feast.data_source import DataSource, KafkaSource, KinesisSource

from feast.diff.registry_diff import extract_objects_for_keep_delete_update_add

from feast.entity import Entity

from feast.feature_service import FeatureService

from feast.feature_store import FeatureStore

from feast.feature_view import DUMMY_ENTITY, FeatureView

from feast.file_utils import replace_str_in_file

from feast.infra.registry.base_registry import BaseRegistry

from feast.infra.registry.registry import FEAST_OBJECT_TYPES, FeastObjectType, Registry

from feast.names import adjectives, animals

from feast.on_demand_feature_view import OnDemandFeatureView

from feast.permissions.permission import Permission

from feast.project import Project

from feast.repo_config import RepoConfig

from feast.repo_contents import RepoContents

from feast.stream_feature_view import StreamFeatureView

logger = logging.getLogger(__name__)

def py_path_to_module(path: Path) -> str:

return (

str(path.relative_to(os.getcwd()))[: -len(".py")]

.replace("./", "")

.replace("/", ".")

.replace("\\", ".")

)

def read_feastignore(repo_root: Path) -> List[str]:

"""Read .feastignore in the repo root directory (if exists) and return the list of user-defined ignore paths"""

feast_ignore = repo_root / ".feastignore"

if not feast_ignore.is_file():

return []

lines = feast_ignore.read_text().strip().split("\n")

ignore_paths = []

for line in lines:

# Remove everything after the first occurance of "#" symbol (comments)

if line.find("#") >= 0:

line = line[: line.find("#")]

# Strip leading or ending whitespaces

line = line.strip()

# Add this processed line to ignore_paths if it's not empty

if len(line) > 0:

ignore_paths.append(line)

return ignore_paths

def get_ignore_files(repo_root: Path, ignore_paths: List[str]) -> Set[Path]:

"""Get all ignore files that match any of the user-defined ignore paths"""

ignore_files = set()

for ignore_path in set(ignore_paths):

# ignore_path may contains matchers (* or **). Use glob() to match user-defined path to actual paths

for matched_path in repo_root.glob(ignore_path):

if matched_path.is_file():

# If the matched path is a file, add that to ignore_files set

ignore_files.add(matched_path.resolve())

else:

# Otherwise, list all Python files in that directory and add all of them to ignore_files set

ignore_files |= {

sub_path.resolve()

for sub_path in matched_path.glob("**/*.py")

if sub_path.is_file()

}

return ignore_files

def get_repo_files(repo_root: Path) -> List[Path]:

"""Get the list of all repo files, ignoring undesired files & directories specified in .feastignore"""

# Read ignore paths from .feastignore and create a set of all files that match any of these paths

ignore_paths = read_feastignore(repo_root) + [

".git",

".feastignore",

".venv",

".pytest_cache",

"__pycache__",

".ipynb_checkpoints",

]

ignore_files = get_ignore_files(repo_root, ignore_paths)

# List all Python files in the root directory (recursively)

repo_files = {

p.resolve()

for p in repo_root.glob("**/*.py")

if p.is_file() and "__init__.py" != p.name

}

# Ignore all files that match any of the ignore paths in .feastignore

repo_files -= ignore_files

# Sort repo_files to read them in the same order every time

return sorted(repo_files)

def parse_repo(repo_root: Path) -> RepoContents:

"""

Collects unique Feast object definitions from the given feature repo.

Specifically, if an object foo has already been added, bar will still be added if

(bar == foo), but not if (bar is foo). This ensures that import statements will

not result in duplicates, but defining two equal objects will.

"""

res = RepoContents(

projects=[],

data_sources=[],

entities=[],

feature_views=[],

feature_services=[],

on_demand_feature_views=[],

stream_feature_views=[],

permissions=[],

)

for repo_file in get_repo_files(repo_root):

module_path = py_path_to_module(repo_file)

module = importlib.import_module(module_path)

for attr_name in dir(module):

obj = getattr(module, attr_name)

if isinstance(obj, DataSource) and not any(

(obj is ds) for ds in res.data_sources

res.data_sources.append(obj)

# Handle batch sources defined within stream sources.

if (

isinstance(obj, PushSource)

or isinstance(obj, KafkaSource)

or isinstance(obj, KinesisSource)

batch_source = obj.batch_source

if batch_source and not any(

(batch_source is ds) for ds in res.data_sources

res.data_sources.append(batch_source)

if (

isinstance(obj, FeatureView)

and not any((obj is fv) for fv in res.feature_views)

and not isinstance(obj, StreamFeatureView)

and not isinstance(obj, BatchFeatureView)

res.feature_views.append(obj)

# Handle batch sources defined with feature views.

batch_source = obj.batch_source

assert batch_source

if not any((batch_source is ds) for ds in res.data_sources):

res.data_sources.append(batch_source)

# Handle stream sources defined with feature views.

if obj.stream_source:

stream_source = obj.stream_source

if not any((stream_source is ds) for ds in res.data_sources):

res.data_sources.append(stream_source)

elif isinstance(obj, StreamFeatureView) and not any(

(obj is sfv) for sfv in res.stream_feature_views

res.stream_feature_views.append(obj)

# Handle batch sources defined with feature views.

batch_source = obj.batch_source

if not any((batch_source is ds) for ds in res.data_sources):

res.data_sources.append(batch_source)

# Handle stream sources defined with feature views.

assert obj.stream_source

stream_source = obj.stream_source

if not any((stream_source is ds) for ds in res.data_sources):

res.data_sources.append(stream_source)

elif isinstance(obj, BatchFeatureView) and not any(

(obj is bfv) for bfv in res.feature_views

res.feature_views.append(obj)

# Handle batch sources defined with feature views.

batch_source = obj.batch_source

if not any((batch_source is ds) for ds in res.data_sources):

res.data_sources.append(batch_source)

elif isinstance(obj, Entity) and not any(

(obj is entity) for entity in res.entities

res.entities.append(obj)

elif isinstance(obj, FeatureService) and not any(

(obj is fs) for fs in res.feature_services

res.feature_services.append(obj)

elif isinstance(obj, OnDemandFeatureView) and not any(

(obj is odfv) for odfv in res.on_demand_feature_views

res.on_demand_feature_views.append(obj)

elif isinstance(obj, Permission) and not any(

(obj is p) for p in res.permissions

res.permissions.append(obj)

elif isinstance(obj, Project) and not any((obj is p) for p in res.projects):

res.projects.append(obj)

res.entities.append(DUMMY_ENTITY)

return res

def plan(repo_config: RepoConfig, repo_path: Path, skip_source_validation: bool):

os.chdir(repo_path)

repo = _get_repo_contents(repo_path, repo_config.project)

for project in repo.projects:

repo_config.project = project.name

store, registry = _get_store_and_registry(repo_config)

# TODO: When we support multiple projects in a single repo, we should filter repo contents by project

if not skip_source_validation:

provider = store._get_provider()

data_sources = [t.batch_source for t in repo.feature_views]

# Make sure the data source used by this feature view is supported by Feast

for data_source in data_sources:

provider.validate_data_source(store.config, data_source)

registry_diff, infra_diff, _ = store.plan(repo)

click.echo(registry_diff.to_string())

click.echo(infra_diff.to_string())

def _get_repo_contents(repo_path, project_name: Optional[str] = None):

sys.dont_write_bytecode = True

repo = parse_repo(repo_path)

if len(repo.projects) < 1:

if project_name:

print(

f"No project found in the repository. Using project name {project_name} defined in feature_store.yaml"

)

repo.projects.append(Project(name=project_name))

else:

print(

"No project found in the repository. Either define Project in repository or define a project in feature_store.yaml"

)

sys.exit(1)

elif len(repo.projects) == 1:

if repo.projects[0].name != project_name:

print(

"Project object name should match with the project name defined in feature_store.yaml"

)

sys.exit(1)

else:

print(

"Multiple projects found in the repository. Currently no support for multiple projects"

)

sys.exit(1)

return repo

def _get_store_and_registry(repo_config):

store = FeatureStore(config=repo_config)

registry = store.registry

return store, registry

def extract_objects_for_apply_delete(project, registry, repo):

# TODO(achals): This code path should be refactored to handle added & kept entities separately.

(

objs_to_delete,

objs_to_update,

objs_to_add,

) = extract_objects_for_keep_delete_update_add(registry, project, repo)

all_to_apply: List[

Union[

Entity,

FeatureView,

OnDemandFeatureView,

StreamFeatureView,

FeatureService,

]

] = []

for object_type in FEAST_OBJECT_TYPES:

to_apply = set(objs_to_add[object_type]).union(objs_to_update[object_type])

all_to_apply.extend(to_apply)

all_to_delete: List[

Union[

Entity,

FeatureView,

OnDemandFeatureView,

StreamFeatureView,

FeatureService,

]

] = []

for object_type in FEAST_OBJECT_TYPES:

all_to_delete.extend(objs_to_delete[object_type])

return (

all_to_apply,

all_to_delete,

set(objs_to_add[FeastObjectType.FEATURE_VIEW]).union(

set(objs_to_update[FeastObjectType.FEATURE_VIEW])

objs_to_delete[FeastObjectType.FEATURE_VIEW],

)

def apply_total_with_repo_instance(

store: FeatureStore,

project_name: str,

registry: BaseRegistry,

repo: RepoContents,

skip_source_validation: bool,

if not skip_source_validation:

provider = store._get_provider()

data_sources = [t.batch_source for t in repo.feature_views]

# Make sure the data source used by this feature view is supported by Feast

for data_source in data_sources:

provider.validate_data_source(store.config, data_source)

# For each object in the registry, determine whether it should be kept or deleted.

(

all_to_apply,

all_to_delete,

views_to_keep,

views_to_delete,

) = extract_objects_for_apply_delete(project_name, registry, repo)

if store._should_use_plan():

registry_diff, infra_diff, new_infra = store.plan(repo)

click.echo(registry_diff.to_string())

store._apply_diffs(registry_diff, infra_diff, new_infra)

click.echo(infra_diff.to_string())

else:

store.apply(all_to_apply, objects_to_delete=all_to_delete, partial=False)

log_infra_changes(views_to_keep, views_to_delete)

def log_infra_changes(

views_to_keep: Set[FeatureView], views_to_delete: Set[FeatureView]

from colorama import Fore, Style

for view in views_to_keep:

click.echo(

f"Deploying infrastructure for {Style.BRIGHT + Fore.GREEN}{view.name}{Style.RESET_ALL}"

)

for view in views_to_delete:

click.echo(

f"Removing infrastructure for {Style.BRIGHT + Fore.RED}{view.name}{Style.RESET_ALL}"

)

def create_feature_store(

ctx: click.Context,

) -> FeatureStore:

repo = ctx.obj["CHDIR"]

# If we received a base64 encoded version of feature_store.yaml, use that

config_base64 = os.getenv(FEATURE_STORE_YAML_ENV_NAME)

if config_base64:

print("Received base64 encoded feature_store.yaml")

config_bytes = base64.b64decode(config_base64)

# Create a new unique directory for writing feature_store.yaml

repo_path = Path(tempfile.mkdtemp())

with open(repo_path / "feature_store.yaml", "wb") as f:

f.write(config_bytes)

return FeatureStore(repo_path=str(repo_path.resolve()))

else:

fs_yaml_file = ctx.obj["FS_YAML_FILE"]

cli_check_repo(repo, fs_yaml_file)

return FeatureStore(repo_path=str(repo), fs_yaml_file=fs_yaml_file)

def apply_total(repo_config: RepoConfig, repo_path: Path, skip_source_validation: bool):

os.chdir(repo_path)

repo = _get_repo_contents(repo_path, repo_config.project)

for project in repo.projects:

repo_config.project = project.name

store, registry = _get_store_and_registry(repo_config)

if not is_valid_name(project.name):

print(

f"{project.name} is not valid. Project name should only have "

f"alphanumerical values and underscores but not start with an underscore."

)

sys.exit(1)

# TODO: When we support multiple projects in a single repo, we should filter repo contents by project. Currently there is no way to associate Feast objects to project.

print(f"Applying changes for project {project.name}")

apply_total_with_repo_instance(

store, project.name, registry, repo, skip_source_validation

)

def teardown(repo_config: RepoConfig, repo_path: Optional[str]):

# Cannot pass in both repo_path and repo_config to FeatureStore.

feature_store = FeatureStore(repo_path=repo_path, config=repo_config)

feature_store.teardown()

def registry_dump(repo_config: RepoConfig, repo_path: Path) -> str:

"""For debugging only: output contents of the metadata registry"""

registry_config = repo_config.registry

project = repo_config.project

registry = Registry(

project,

registry_config=registry_config,

repo_path=repo_path,

auth_config=repo_config.auth_config,

)

registry_dict = registry.to_dict(project=project)

return json.dumps(registry_dict, indent=2, sort_keys=True)

def cli_check_repo(repo_path: Path, fs_yaml_file: Path):

sys.path.append(str(repo_path))

if not fs_yaml_file.exists():

print(

f"Can't find feature repo configuration file at {fs_yaml_file}. "

"Make sure you're running feast from an initialized feast repository."

)

sys.exit(1)

def init_repo(repo_name: str, template: str):

import os

from pathlib import Path

from shutil import copytree

from colorama import Fore, Style

if not is_valid_name(repo_name):

raise BadParameter(

message="Name should be alphanumeric values and underscores but not start with an underscore",

param_hint="PROJECT_DIRECTORY",

)

repo_path = Path(os.path.join(Path.cwd(), repo_name))

repo_path.mkdir(exist_ok=True)

repo_config_path = repo_path / "feature_store.yaml"

if repo_config_path.exists():

new_directory = os.path.relpath(repo_path, os.getcwd())

print(

f"The directory {Style.BRIGHT + Fore.GREEN}{new_directory}{Style.RESET_ALL} contains an existing feature "

f"store repository that may cause a conflict"

)

print()

sys.exit(1)

# Copy template directory

template_path = str(Path(Path(__file__).parent / "templates" / template).absolute())

if not os.path.exists(template_path):

raise IOError(f"Could not find template {template}")

copytree(template_path, str(repo_path), dirs_exist_ok=True)

# Rename gitignore files back to .gitignore

for gitignore_path in repo_path.rglob("gitignore"):

gitignore_path.rename(gitignore_path.with_name(".gitignore"))

# Seed the repository

bootstrap_path = repo_path / "bootstrap.py"

if os.path.exists(bootstrap_path):

import importlib.util

spec = importlib.util.spec_from_file_location("bootstrap", str(bootstrap_path))

assert isinstance(spec, ModuleSpec)

bootstrap = importlib.util.module_from_spec(spec)

assert isinstance(spec.loader, Loader)

spec.loader.exec_module(bootstrap)

bootstrap.bootstrap() # type: ignore

os.remove(bootstrap_path)

# Template the feature_store.yaml file

feature_store_yaml_path = repo_path / "feature_repo" / "feature_store.yaml"

replace_str_in_file(

feature_store_yaml_path, "project: my_project", f"project: {repo_name}"

)

# Remove the __pycache__ folder if it exists

import shutil

shutil.rmtree(repo_path / "__pycache__", ignore_errors=True)

import click

click.echo()

click.echo(

f"Creating a new Feast repository in {Style.BRIGHT + Fore.GREEN}{repo_path}{Style.RESET_ALL}."

)

click.echo()

def is_valid_name(name: str) -> bool:

"""A name should be alphanumeric values and underscores but not start with an underscore"""

return not name.startswith("_") and re.compile(r"\W+").search(name) is None

def generate_project_name() -> str:

"""Generates a unique project name"""

return f"{random.choice(adjectives)}_{random.choice(animals)}"

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