# Copyright 2019 The Feast Authors

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# https://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

import json

import logging

from collections import defaultdict

from datetime import datetime, timedelta

from enum import Enum

from pathlib import Path

from threading import Lock

from typing import Any, Dict, List, Optional, Set

from urllib.parse import urlparse

import dill

from google.protobuf.internal.containers import RepeatedCompositeFieldContainer

from google.protobuf.json_format import MessageToJson

from proto import Message

from feast.base_feature_view import BaseFeatureView

from feast.data_source import DataSource

from feast.entity import Entity

from feast.errors import (

ConflictingFeatureViewNames,

DataSourceNotFoundException,

DataSourceObjectNotFoundException,

EntityNotFoundException,

FeatureServiceNotFoundException,

FeatureViewNotFoundException,

OnDemandFeatureViewNotFoundException,

SavedDatasetNotFound,

)

from feast.feature_service import FeatureService

from feast.feature_view import FeatureView

from feast.importer import import_class

from feast.infra.infra_object import Infra

from feast.on_demand_feature_view import OnDemandFeatureView

from feast.protos.feast.core.Registry_pb2 import Registry as RegistryProto

from feast.registry_store import NoopRegistryStore

from feast.repo_config import RegistryConfig

from feast.repo_contents import RepoContents

from feast.request_feature_view import RequestFeatureView

from feast.saved_dataset import SavedDataset

REGISTRY_SCHEMA_VERSION = "1"

REGISTRY_STORE_CLASS_FOR_TYPE = {

"GCSRegistryStore": "feast.infra.gcp.GCSRegistryStore",

"S3RegistryStore": "feast.infra.aws.S3RegistryStore",

"LocalRegistryStore": "feast.infra.local.LocalRegistryStore",

}

REGISTRY_STORE_CLASS_FOR_SCHEME = {

"gs": "GCSRegistryStore",

"s3": "S3RegistryStore",

"file": "LocalRegistryStore",

"": "LocalRegistryStore",

}

class FeastObjectType(Enum):

DATA_SOURCE = "data source"

ENTITY = "entity"

FEATURE_VIEW = "feature view"

ON_DEMAND_FEATURE_VIEW = "on demand feature view"

REQUEST_FEATURE_VIEW = "request feature view"

FEATURE_SERVICE = "feature service"

@staticmethod

def get_objects_from_registry(

registry: "Registry", project: str

) -> Dict["FeastObjectType", List[Any]]:

return {

FeastObjectType.DATA_SOURCE: registry.list_data_sources(project=project),

FeastObjectType.ENTITY: registry.list_entities(project=project),

FeastObjectType.FEATURE_VIEW: registry.list_feature_views(project=project),

FeastObjectType.ON_DEMAND_FEATURE_VIEW: registry.list_on_demand_feature_views(

project=project

),

FeastObjectType.REQUEST_FEATURE_VIEW: registry.list_request_feature_views(

project=project

),

FeastObjectType.FEATURE_SERVICE: registry.list_feature_services(

project=project

),

}

@staticmethod

def get_objects_from_repo_contents(

repo_contents: RepoContents,

) -> Dict["FeastObjectType", Set[Any]]:

return {

FeastObjectType.DATA_SOURCE: repo_contents.data_sources,

FeastObjectType.ENTITY: repo_contents.entities,

FeastObjectType.FEATURE_VIEW: repo_contents.feature_views,

FeastObjectType.ON_DEMAND_FEATURE_VIEW: repo_contents.on_demand_feature_views,

FeastObjectType.REQUEST_FEATURE_VIEW: repo_contents.request_feature_views,

FeastObjectType.FEATURE_SERVICE: repo_contents.feature_services,

}

FEAST_OBJECT_TYPES = [feast_object_type for feast_object_type in FeastObjectType]

logger = logging.getLogger(__name__)

def get_registry_store_class_from_type(registry_store_type: str):

if not registry_store_type.endswith("RegistryStore"):

raise Exception('Registry store class name should end with "RegistryStore"')

if registry_store_type in REGISTRY_STORE_CLASS_FOR_TYPE:

registry_store_type = REGISTRY_STORE_CLASS_FOR_TYPE[registry_store_type]

module_name, registry_store_class_name = registry_store_type.rsplit(".", 1)

return import_class(module_name, registry_store_class_name, "RegistryStore")

def get_registry_store_class_from_scheme(registry_path: str):

uri = urlparse(registry_path)

if uri.scheme not in REGISTRY_STORE_CLASS_FOR_SCHEME:

raise Exception(

f"Registry path {registry_path} has unsupported scheme {uri.scheme}. "

f"Supported schemes are file, s3 and gs."

)

else:

registry_store_type = REGISTRY_STORE_CLASS_FOR_SCHEME[uri.scheme]

return get_registry_store_class_from_type(registry_store_type)

class Registry:

"""

Registry: A registry allows for the management and persistence of feature definitions and related metadata.

"""

# The cached_registry_proto object is used for both reads and writes. In particular,

# all write operations refresh the cache and modify it in memory; the write must

# then be persisted to the underlying RegistryStore with a call to commit().

cached_registry_proto: Optional[RegistryProto] = None

cached_registry_proto_created: Optional[datetime] = None

cached_registry_proto_ttl: timedelta

def __init__(

self, registry_config: Optional[RegistryConfig], repo_path: Optional[Path]

):

"""

Create the Registry object.

Args:

registry_config: RegistryConfig object containing the destination path and cache ttl,

repo_path: Path to the base of the Feast repository

or where it will be created if it does not exist yet.

"""

self._refresh_lock = Lock()

if registry_config:

registry_store_type = registry_config.registry_store_type

registry_path = registry_config.path

if registry_store_type is None:

cls = get_registry_store_class_from_scheme(registry_path)

else:

cls = get_registry_store_class_from_type(str(registry_store_type))

self._registry_store = cls(registry_config, repo_path)

self.cached_registry_proto_ttl = timedelta(

seconds=registry_config.cache_ttl_seconds

if registry_config.cache_ttl_seconds is not None

else 0

)

def clone(self) -> "Registry":

new_registry = Registry(None, None)

new_registry.cached_registry_proto_ttl = timedelta(seconds=0)

new_registry.cached_registry_proto = (

self.cached_registry_proto.__deepcopy__()

if self.cached_registry_proto

else RegistryProto()

)

new_registry.cached_registry_proto_created = datetime.utcnow()

new_registry._registry_store = NoopRegistryStore()

return new_registry

def _initialize_registry(self):

"""Explicitly initializes the registry with an empty proto if it doesn't exist."""

try:

self._get_registry_proto()

except FileNotFoundError:

registry_proto = RegistryProto()

registry_proto.registry_schema_version = REGISTRY_SCHEMA_VERSION

self._registry_store.update_registry_proto(registry_proto)

def update_infra(self, infra: Infra, project: str, commit: bool = True):

"""

Updates the stored Infra object.

Args:

infra: The new Infra object to be stored.

project: Feast project that the Infra object refers to

commit: Whether the change should be persisted immediately

"""

self._prepare_registry_for_changes()

assert self.cached_registry_proto

self.cached_registry_proto.infra.CopyFrom(infra.to_proto())

if commit:

self.commit()

def get_infra(self, project: str, allow_cache: bool = False) -> Infra:

"""

Retrieves the stored Infra object.

Args:

project: Feast project that the Infra object refers to

allow_cache: Whether to allow returning this entity from a cached registry

Returns:

The stored Infra object.

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

return Infra.from_proto(registry_proto.infra)

def apply_entity(self, entity: Entity, project: str, commit: bool = True):

"""

Registers a single entity with Feast

Args:

entity: Entity that will be registered

project: Feast project that this entity belongs to

commit: Whether the change should be persisted immediately

"""

entity.is_valid()

now = datetime.utcnow()

if not entity.created_timestamp:

entity.created_timestamp = now

entity.last_updated_timestamp = now

entity_proto = entity.to_proto()

entity_proto.spec.project = project

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, existing_entity_proto in enumerate(

self.cached_registry_proto.entities

):

if (

existing_entity_proto.spec.name == entity_proto.spec.name

and existing_entity_proto.spec.project == project

):

del self.cached_registry_proto.entities[idx]

break

self.cached_registry_proto.entities.append(entity_proto)

if commit:

self.commit()

def list_entities(self, project: str, allow_cache: bool = False) -> List[Entity]:

"""

Retrieve a list of entities from the registry

Args:

allow_cache: Whether to allow returning entities from a cached registry

project: Filter entities based on project name

Returns:

List of entities

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

entities = []

for entity_proto in registry_proto.entities:

if entity_proto.spec.project == project:

entities.append(Entity.from_proto(entity_proto))

return entities

def list_data_sources(

self, project: str, allow_cache: bool = False

) -> List[DataSource]:

"""

Retrieve a list of data sources from the registry

Args:

project: Filter data source based on project name

allow_cache: Whether to allow returning data sources from a cached registry

Returns:

List of data sources

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

data_sources = []

for data_source_proto in registry_proto.data_sources:

if data_source_proto.project == project:

data_sources.append(DataSource.from_proto(data_source_proto))

return data_sources

def apply_data_source(

self, data_source: DataSource, project: str, commit: bool = True

):

"""

Registers a single data source with Feast

Args:

data_source: A data source that will be registered

project: Feast project that this data source belongs to

commit: Whether to immediately commit to the registry

"""

registry = self._prepare_registry_for_changes()

for idx, existing_data_source_proto in enumerate(registry.data_sources):

if existing_data_source_proto.name == data_source.name:

del registry.data_sources[idx]

data_source_proto = data_source.to_proto()

data_source_proto.project = project

registry.data_sources.append(data_source_proto)

if commit:

self.commit()

def delete_data_source(self, name: str, project: str, commit: bool = True):

"""

Deletes a data source or raises an exception if not found.

Args:

name: Name of data source

project: Feast project that this data source belongs to

commit: Whether the change should be persisted immediately

"""

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, data_source_proto in enumerate(

self.cached_registry_proto.data_sources

):

if data_source_proto.name == name:

del self.cached_registry_proto.data_sources[idx]

if commit:

self.commit()

return

raise DataSourceNotFoundException(name)

def apply_feature_service(

self, feature_service: FeatureService, project: str, commit: bool = True

):

"""

Registers a single feature service with Feast

Args:

feature_service: A feature service that will be registered

project: Feast project that this entity belongs to

"""

now = datetime.utcnow()

if not feature_service.created_timestamp:

feature_service.created_timestamp = now

feature_service.last_updated_timestamp = now

feature_service_proto = feature_service.to_proto()

feature_service_proto.spec.project = project

registry = self._prepare_registry_for_changes()

for idx, existing_feature_service_proto in enumerate(registry.feature_services):

if (

existing_feature_service_proto.spec.name

== feature_service_proto.spec.name

and existing_feature_service_proto.spec.project == project

):

del registry.feature_services[idx]

registry.feature_services.append(feature_service_proto)

if commit:

self.commit()

def list_feature_services(

self, project: str, allow_cache: bool = False

) -> List[FeatureService]:

"""

Retrieve a list of feature services from the registry

Args:

allow_cache: Whether to allow returning entities from a cached registry

project: Filter entities based on project name

Returns:

List of feature services

"""

registry = self._get_registry_proto(allow_cache=allow_cache)

feature_services = []

for feature_service_proto in registry.feature_services:

if feature_service_proto.spec.project == project:

feature_services.append(

FeatureService.from_proto(feature_service_proto)

)

return feature_services

def get_feature_service(

self, name: str, project: str, allow_cache: bool = False

) -> FeatureService:

"""

Retrieves a feature service.

Args:

name: Name of feature service

project: Feast project that this feature service belongs to

allow_cache: Whether to allow returning this feature service from a cached registry

Returns:

Returns either the specified feature service, or raises an exception if

none is found

"""

registry = self._get_registry_proto(allow_cache=allow_cache)

for feature_service_proto in registry.feature_services:

if (

feature_service_proto.spec.project == project

and feature_service_proto.spec.name == name

):

return FeatureService.from_proto(feature_service_proto)

raise FeatureServiceNotFoundException(name, project=project)

def get_entity(self, name: str, project: str, allow_cache: bool = False) -> Entity:

"""

Retrieves an entity.

Args:

name: Name of entity

project: Feast project that this entity belongs to

allow_cache: Whether to allow returning this entity from a cached registry

Returns:

Returns either the specified entity, or raises an exception if

none is found

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

for entity_proto in registry_proto.entities:

if entity_proto.spec.name == name and entity_proto.spec.project == project:

return Entity.from_proto(entity_proto)

raise EntityNotFoundException(name, project=project)

def apply_feature_view(

self, feature_view: BaseFeatureView, project: str, commit: bool = True

):

"""

Registers a single feature view with Feast

Args:

feature_view: Feature view that will be registered

project: Feast project that this feature view belongs to

commit: Whether the change should be persisted immediately

"""

feature_view.ensure_valid()

now = datetime.utcnow()

if not feature_view.created_timestamp:

feature_view.created_timestamp = now

feature_view.last_updated_timestamp = now

feature_view_proto = feature_view.to_proto()

feature_view_proto.spec.project = project

self._prepare_registry_for_changes()

assert self.cached_registry_proto

self._check_conflicting_feature_view_names(feature_view)

existing_feature_views_of_same_type: RepeatedCompositeFieldContainer

if isinstance(feature_view, FeatureView):

existing_feature_views_of_same_type = (

self.cached_registry_proto.feature_views

)

elif isinstance(feature_view, OnDemandFeatureView):

existing_feature_views_of_same_type = (

self.cached_registry_proto.on_demand_feature_views

)

elif isinstance(feature_view, RequestFeatureView):

existing_feature_views_of_same_type = (

self.cached_registry_proto.request_feature_views

)

else:

raise ValueError(f"Unexpected feature view type: {type(feature_view)}")

for idx, existing_feature_view_proto in enumerate(

existing_feature_views_of_same_type

):

if (

existing_feature_view_proto.spec.name == feature_view_proto.spec.name

and existing_feature_view_proto.spec.project == project

):

if (

feature_view.__class__.from_proto(existing_feature_view_proto)

== feature_view

):

return

else:

del existing_feature_views_of_same_type[idx]

break

existing_feature_views_of_same_type.append(feature_view_proto)

if commit:

self.commit()

def list_on_demand_feature_views(

self, project: str, allow_cache: bool = False

) -> List[OnDemandFeatureView]:

"""

Retrieve a list of on demand feature views from the registry

Args:

project: Filter on demand feature views based on project name

allow_cache: Whether to allow returning on demand feature views from a cached registry

Returns:

List of on demand feature views

"""

registry = self._get_registry_proto(allow_cache=allow_cache)

on_demand_feature_views = []

for on_demand_feature_view in registry.on_demand_feature_views:

if on_demand_feature_view.spec.project == project:

on_demand_feature_views.append(

OnDemandFeatureView.from_proto(on_demand_feature_view)

)

return on_demand_feature_views

def get_on_demand_feature_view(

self, name: str, project: str, allow_cache: bool = False

) -> OnDemandFeatureView:

"""

Retrieves an on demand feature view.

Args:

name: Name of on demand feature view

project: Feast project that this on demand feature view belongs to

allow_cache: Whether to allow returning this on demand feature view from a cached registry

Returns:

Returns either the specified on demand feature view, or raises an exception if

none is found

"""

registry = self._get_registry_proto(allow_cache=allow_cache)

for on_demand_feature_view in registry.on_demand_feature_views:

if (

on_demand_feature_view.spec.project == project

and on_demand_feature_view.spec.name == name

):

return OnDemandFeatureView.from_proto(on_demand_feature_view)

raise OnDemandFeatureViewNotFoundException(name, project=project)

def get_data_source(

self, name: str, project: str, allow_cache: bool = False

) -> DataSource:

"""

Retrieves a data source.

Args:

name: Name of data source

project: Feast project that this data source belongs to

allow_cache: Whether to allow returning this data source from a cached registry

Returns:

Returns either the specified data source, or raises an exception if none is found

"""

registry = self._get_registry_proto(allow_cache=allow_cache)

for data_source in registry.data_sources:

if data_source.project == project and data_source.name == name:

return DataSource.from_proto(data_source)

raise DataSourceObjectNotFoundException(name, project=project)

def apply_materialization(

self,

feature_view: FeatureView,

project: str,

start_date: datetime,

end_date: datetime,

commit: bool = True,

):

"""

Updates materialization intervals tracked for a single feature view in Feast

Args:

feature_view: Feature view that will be updated with an additional materialization interval tracked

project: Feast project that this feature view belongs to

start_date (datetime): Start date of the materialization interval to track

end_date (datetime): End date of the materialization interval to track

commit: Whether the change should be persisted immediately

"""

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, existing_feature_view_proto in enumerate(

self.cached_registry_proto.feature_views

):

if (

existing_feature_view_proto.spec.name == feature_view.name

and existing_feature_view_proto.spec.project == project

):

existing_feature_view = FeatureView.from_proto(

existing_feature_view_proto

)

existing_feature_view.materialization_intervals.append(

(start_date, end_date)

)

existing_feature_view.last_updated_timestamp = datetime.utcnow()

feature_view_proto = existing_feature_view.to_proto()

feature_view_proto.spec.project = project

del self.cached_registry_proto.feature_views[idx]

self.cached_registry_proto.feature_views.append(feature_view_proto)

if commit:

self.commit()

return

raise FeatureViewNotFoundException(feature_view.name, project)

def list_feature_views(

self, project: str, allow_cache: bool = False

) -> List[FeatureView]:

"""

Retrieve a list of feature views from the registry

Args:

allow_cache: Allow returning feature views from the cached registry

project: Filter feature views based on project name

Returns:

List of feature views

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

feature_views: List[FeatureView] = []

for feature_view_proto in registry_proto.feature_views:

if feature_view_proto.spec.project == project:

feature_views.append(FeatureView.from_proto(feature_view_proto))

return feature_views

def list_request_feature_views(

self, project: str, allow_cache: bool = False

) -> List[RequestFeatureView]:

"""

Retrieve a list of request feature views from the registry

Args:

allow_cache: Allow returning feature views from the cached registry

project: Filter feature views based on project name

Returns:

List of feature views

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

feature_views: List[RequestFeatureView] = []

for request_feature_view_proto in registry_proto.request_feature_views:

if request_feature_view_proto.spec.project == project:

feature_views.append(

RequestFeatureView.from_proto(request_feature_view_proto)

)

return feature_views

def get_feature_view(

self, name: str, project: str, allow_cache: bool = False

) -> FeatureView:

"""

Retrieves a feature view.

Args:

name: Name of feature view

project: Feast project that this feature view belongs to

allow_cache: Allow returning feature view from the cached registry

Returns:

Returns either the specified feature view, or raises an exception if

none is found

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

for feature_view_proto in registry_proto.feature_views:

if (

feature_view_proto.spec.name == name

and feature_view_proto.spec.project == project

):

return FeatureView.from_proto(feature_view_proto)

raise FeatureViewNotFoundException(name, project)

def delete_feature_service(self, name: str, project: str, commit: bool = True):

"""

Deletes a feature service or raises an exception if not found.

Args:

name: Name of feature service

project: Feast project that this feature service belongs to

commit: Whether the change should be persisted immediately

"""

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, feature_service_proto in enumerate(

self.cached_registry_proto.feature_services

):

if (

feature_service_proto.spec.name == name

and feature_service_proto.spec.project == project

):

del self.cached_registry_proto.feature_services[idx]

if commit:

self.commit()

return

raise FeatureServiceNotFoundException(name, project)

def delete_feature_view(self, name: str, project: str, commit: bool = True):

"""

Deletes a feature view or raises an exception if not found.

Args:

name: Name of feature view

project: Feast project that this feature view belongs to

commit: Whether the change should be persisted immediately

"""

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, existing_feature_view_proto in enumerate(

self.cached_registry_proto.feature_views

):

if (

existing_feature_view_proto.spec.name == name

and existing_feature_view_proto.spec.project == project

):

del self.cached_registry_proto.feature_views[idx]

if commit:

self.commit()

return

for idx, existing_request_feature_view_proto in enumerate(

self.cached_registry_proto.request_feature_views

):

if (

existing_request_feature_view_proto.spec.name == name

and existing_request_feature_view_proto.spec.project == project

):

del self.cached_registry_proto.request_feature_views[idx]

if commit:

self.commit()

return

for idx, existing_on_demand_feature_view_proto in enumerate(

self.cached_registry_proto.on_demand_feature_views

):

if (

existing_on_demand_feature_view_proto.spec.name == name

and existing_on_demand_feature_view_proto.spec.project == project

):

del self.cached_registry_proto.on_demand_feature_views[idx]

if commit:

self.commit()

return

raise FeatureViewNotFoundException(name, project)

def delete_entity(self, name: str, project: str, commit: bool = True):

"""

Deletes an entity or raises an exception if not found.

Args:

name: Name of entity

project: Feast project that this entity belongs to

commit: Whether the change should be persisted immediately

"""

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, existing_entity_proto in enumerate(

self.cached_registry_proto.entities

):

if (

existing_entity_proto.spec.name == name

and existing_entity_proto.spec.project == project

):

del self.cached_registry_proto.entities[idx]

if commit:

self.commit()

return

raise EntityNotFoundException(name, project)

def apply_saved_dataset(

self, saved_dataset: SavedDataset, project: str, commit: bool = True,

):

"""

Registers a single entity with Feast

Args:

saved_dataset: SavedDataset that will be added / updated to registry

project: Feast project that this dataset belongs to

commit: Whether the change should be persisted immediately

"""

now = datetime.utcnow()

if not saved_dataset.created_timestamp:

saved_dataset.created_timestamp = now

saved_dataset.last_updated_timestamp = now

saved_dataset_proto = saved_dataset.to_proto()

saved_dataset_proto.spec.project = project

self._prepare_registry_for_changes()

assert self.cached_registry_proto

for idx, existing_saved_dataset_proto in enumerate(

self.cached_registry_proto.saved_datasets

):

if (

existing_saved_dataset_proto.spec.name == saved_dataset_proto.spec.name

and existing_saved_dataset_proto.spec.project == project

):

del self.cached_registry_proto.saved_datasets[idx]

break

self.cached_registry_proto.saved_datasets.append(saved_dataset_proto)

if commit:

self.commit()

def get_saved_dataset(

self, name: str, project: str, allow_cache: bool = False

) -> SavedDataset:

"""

Retrieves a saved dataset.

Args:

name: Name of dataset

project: Feast project that this dataset belongs to

allow_cache: Whether to allow returning this dataset from a cached registry

Returns:

Returns either the specified SavedDataset, or raises an exception if

none is found

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

for saved_dataset in registry_proto.saved_datasets:

if (

saved_dataset.spec.name == name

and saved_dataset.spec.project == project

):

return SavedDataset.from_proto(saved_dataset)

raise SavedDatasetNotFound(name, project=project)

def list_saved_datasets(

self, project: str, allow_cache: bool = False

) -> List[SavedDataset]:

"""

Retrieves a list of all saved datasets in specified project

Args:

project: Feast project

allow_cache: Whether to allow returning this dataset from a cached registry

Returns:

Returns the list of SavedDatasets

"""

registry_proto = self._get_registry_proto(allow_cache=allow_cache)

return [

SavedDataset.from_proto(saved_dataset)

for saved_dataset in registry_proto.saved_datasets

if saved_dataset.spec.project == project

]

def commit(self):

"""Commits the state of the registry cache to the remote registry store."""

if self.cached_registry_proto:

self._registry_store.update_registry_proto(self.cached_registry_proto)

def refresh(self):

"""Refreshes the state of the registry cache by fetching the registry state from the remote registry store."""

self._get_registry_proto(allow_cache=False)

def teardown(self):

"""Tears down (removes) the registry."""

self._registry_store.teardown()

def to_dict(self, project: str) -> Dict[str, List[Any]]:

"""Returns a dictionary representation of the registry contents for the specified project.

For each list in the dictionary, the elements are sorted by name, so this

method can be used to compare two registries.

Args:

project: Feast project to convert to a dict

"""

registry_dict: Dict[str, Any] = defaultdict(list)

registry_dict["project"] = project

for data_source in sorted(

self.list_data_sources(project=project), key=lambda ds: ds.name

):

registry_dict["dataSources"].append(

self._message_to_sorted_dict(data_source.to_proto())

)

for entity in sorted(

self.list_entities(project=project), key=lambda entity: entity.name

):

registry_dict["entities"].append(

self._message_to_sorted_dict(entity.to_proto())

)

for feature_view in sorted(

self.list_feature_views(project=project),

key=lambda feature_view: feature_view.name,

):

registry_dict["featureViews"].append(

self._message_to_sorted_dict(feature_view.to_proto())

)

for feature_service in sorted(

self.list_feature_services(project=project),

key=lambda feature_service: feature_service.name,

):

registry_dict["featureServices"].append(

self._message_to_sorted_dict(feature_service.to_proto())

)

for on_demand_feature_view in sorted(

self.list_on_demand_feature_views(project=project),

key=lambda on_demand_feature_view: on_demand_feature_view.name,

):

odfv_dict = self._message_to_sorted_dict(on_demand_feature_view.to_proto())

odfv_dict["spec"]["userDefinedFunction"]["body"] = dill.source.getsource(

on_demand_feature_view.udf

)

registry_dict["onDemandFeatureViews"].append(odfv_dict)

for request_feature_view in sorted(

self.list_request_feature_views(project=project),

key=lambda request_feature_view: request_feature_view.name,

):

registry_dict["requestFeatureViews"].append(

self._message_to_sorted_dict(request_feature_view.to_proto())

)

for saved_dataset in sorted(

self.list_saved_datasets(project=project), key=lambda item: item.name

):

registry_dict["savedDatasets"].append(

self._message_to_sorted_dict(saved_dataset.to_proto())

)

for infra_object in sorted(self.get_infra(project=project).infra_objects):

registry_dict["infra"].append(

self._message_to_sorted_dict(infra_object.to_proto())

)

return registry_dict

@staticmethod

def _message_to_sorted_dict(message: Message) -> Dict[str, Any]:

return json.loads(MessageToJson(message, sort_keys=True))

def _prepare_registry_for_changes(self):

"""Prepares the Registry for changes by refreshing the cache if necessary."""

try:

self._get_registry_proto(allow_cache=True)

except FileNotFoundError:

registry_proto = RegistryProto()

registry_proto.registry_schema_version = REGISTRY_SCHEMA_VERSION

self.cached_registry_proto = registry_proto

self.cached_registry_proto_created = datetime.utcnow()

return self.cached_registry_proto

def _get_registry_proto(self, allow_cache: bool = False) -> RegistryProto:

"""Returns the cached or remote registry state

Args:

allow_cache: Whether to allow the use of the registry cache when fetching the RegistryProto

Returns: Returns a RegistryProto object which represents the state of the registry

"""

with self._refresh_lock:

expired = (

self.cached_registry_proto is None

or self.cached_registry_proto_created is None

) or (

self.cached_registry_proto_ttl.total_seconds()

> 0 # 0 ttl means infinity

and (

datetime.utcnow()

> (

self.cached_registry_proto_created

+ self.cached_registry_proto_ttl

)

)

)

if allow_cache and not expired:

assert isinstance(self.cached_registry_proto, RegistryProto)

return self.cached_registry_proto

registry_proto = self._registry_store.get_registry_proto()

self.cached_registry_proto = registry_proto

self.cached_registry_proto_created = datetime.utcnow()

return registry_proto

def _check_conflicting_feature_view_names(self, feature_view: BaseFeatureView):

name_to_fv_protos = self._existing_feature_view_names_to_fvs()

if feature_view.name in name_to_fv_protos:

if not isinstance(

name_to_fv_protos.get(feature_view.name), feature_view.proto_class

):

raise ConflictingFeatureViewNames(feature_view.name)