# 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 logging

from itertools import count

from threading import Event

from base import benchmark, BenchmarkThread

log = logging.getLogger(__name__)

sentinel = object()

class Runner(BenchmarkThread):

def __init__(self, *args, **kwargs):

BenchmarkThread.__init__(self, *args, **kwargs)

self.num_started = count()

self.num_finished = count()

self.event = Event()

def insert_next(self, previous_result=sentinel):

if previous_result is not sentinel:

if isinstance(previous_result, BaseException):

log.error("Error on insert: %r", previous_result)

if next(self.num_finished) >= self.num_queries:

self.event.set()

i = next(self.num_started)

if i <= self.num_queries:

key = "{0}-{1}".format(self.thread_num, i)

future = self.run_query(key, timeout=None)

future.add_callbacks(self.insert_next, self.insert_next)

def run(self):

self.start_profile()

if self.protocol_version >= 3:

concurrency = 1000

else:

concurrency = 100

for _ in range(min(concurrency, self.num_queries)):

self.insert_next()

self.event.wait()

self.finish_profile()

if __name__ == "__main__":

benchmark(Runner)