feast/sdk/python/feast/feature_server.py at master · cmrfrd/feast · GitHub

History

138 lines (116 loc) · 4.93 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

import json

import traceback

import warnings

import pandas as pd

import uvicorn

from fastapi import FastAPI, HTTPException, Request, Response, status

from fastapi.logger import logger

from fastapi.params import Depends

from google.protobuf.json_format import MessageToDict, Parse

from pydantic import BaseModel

import feast

from feast import proto_json

from feast.data_source import PushMode

from feast.protos.feast.serving.ServingService_pb2 import GetOnlineFeaturesRequest

# TODO: deprecate this in favor of push features

class WriteToFeatureStoreRequest(BaseModel):

feature_view_name: str

df: dict

allow_registry_cache: bool = True

class PushFeaturesRequest(BaseModel):

push_source_name: str

df: dict

allow_registry_cache: bool = True

to: str = "online"

def get_app(store: "feast.FeatureStore"):

proto_json.patch()

app = FastAPI()

async def get_body(request: Request):

return await request.body()

@app.post("/get-online-features")

def get_online_features(body=Depends(get_body)):

try:

# Validate and parse the request data into GetOnlineFeaturesRequest Protobuf object

request_proto = GetOnlineFeaturesRequest()

Parse(body, request_proto)

# Initialize parameters for FeatureStore.get_online_features(...) call

if request_proto.HasField("feature_service"):

features = store.get_feature_service(

request_proto.feature_service, allow_cache=True

)

else:

features = list(request_proto.features.val)

full_feature_names = request_proto.full_feature_names

batch_sizes = [len(v.val) for v in request_proto.entities.values()]

num_entities = batch_sizes[0]

if any(batch_size != num_entities for batch_size in batch_sizes):

raise HTTPException(status_code=500, detail="Uneven number of columns")

response_proto = store._get_online_features(

features=features,

entity_values=request_proto.entities,

full_feature_names=full_feature_names,

native_entity_values=False,

).proto

# Convert the Protobuf object to JSON and return it

return MessageToDict( # type: ignore

response_proto, preserving_proto_field_name=True, float_precision=18

)

except Exception as e:

# Print the original exception on the server side

logger.exception(traceback.format_exc())

# Raise HTTPException to return the error message to the client

raise HTTPException(status_code=500, detail=str(e))

@app.post("/push")

def push(body=Depends(get_body)):

try:

request = PushFeaturesRequest(**json.loads(body))

df = pd.DataFrame(request.df)

if request.to == "offline":

to = PushMode.OFFLINE

elif request.to == "online":

to = PushMode.ONLINE

elif request.to == "online_and_offline":

to = PushMode.ONLINE_AND_OFFLINE

else:

raise ValueError(

f"{request.to} is not a supported push format. Please specify one of these ['online', 'offline', 'online_and_offline']."

)

store.push(

push_source_name=request.push_source_name,

df=df,

allow_registry_cache=request.allow_registry_cache,

to=to,

)

except Exception as e:

# Print the original exception on the server side

logger.exception(traceback.format_exc())

# Raise HTTPException to return the error message to the client

raise HTTPException(status_code=500, detail=str(e))

@app.post("/write-to-online-store")

def write_to_online_store(body=Depends(get_body)):

warnings.warn(

"write_to_online_store is deprecated. Please consider using /push instead",

RuntimeWarning,

)

try:

request = WriteToFeatureStoreRequest(**json.loads(body))

df = pd.DataFrame(request.df)

store.write_to_online_store(

feature_view_name=request.feature_view_name,

df=df,

allow_registry_cache=request.allow_registry_cache,

)

except Exception as e:

# Print the original exception on the server side

logger.exception(traceback.format_exc())

# Raise HTTPException to return the error message to the client

raise HTTPException(status_code=500, detail=str(e))

@app.get("/health")

def health():

return Response(status_code=status.HTTP_200_OK)

return app

def start_server(

store: "feast.FeatureStore", host: str, port: int, no_access_log: bool

app = get_app(store)

uvicorn.run(app, host=host, port=port, access_log=(not no_access_log))

feast/sdk/python/feast/feature_server.py at master · cmrfrd/feast · GitHub

Expand file tree

Breadcrumbs

feature_server.py

Latest commit

History

Breadcrumbs

feature_server.py

File metadata and controls