# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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
#
#   http://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 urllib.request
import pyarrow as pa
import time

start_time = time.time()

with urllib.request.urlopen('http://localhost:8000') as response:
  buffer = response.read()

batches = []

with pa.ipc.open_stream(buffer) as reader:
  schema = reader.schema
  try:
    while True:
      batches.append(reader.read_next_batch())
  except StopIteration:
      pass

# or:
#with pa.ipc.open_stream(buffer) as reader:
#  schema = reader.schema
#  batches = [b for b in reader]

end_time = time.time()
execution_time = end_time - start_time

print(f"{len(buffer)} bytes received")
print(f"{len(batches)} record batches received")
print(f"{execution_time} seconds elapsed")