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#!/usr/bin/env ruby
# Copyright 2016 gRPC 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
#
# 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.
require_relative './end2end_common'
Thread.abort_on_exception = true
include GRPC::Core::ConnectivityStates
def watch_state(ch, sleep_time)
thd = Thread.new do
state = ch.connectivity_state(false)
fail "non-idle state: #{state}" unless state == IDLE
ch.watch_connectivity_state(IDLE, Time.now + 360)
end
# sleep to get the thread into the middle of a
# "watch connectivity state" call
sleep sleep_time
thd.kill
end
def run_multiple_killed_watches(num_threads, sleep_time)
channels = []
num_threads.times do
ch = GRPC::Core::Channel.new('dummy_host',
nil, :this_channel_is_insecure)
watch_state(ch, sleep_time)
channels << ch
end
# checking state should still be safe to call
channels.each do |c|
connectivity_state = c.connectivity_state(false)
# The state should be FATAL_FAILURE in the case that it was interrupted
# while watching connectivity state, and IDLE if it we never started
# watching the channel's connectivity state
unless [FATAL_FAILURE, IDLE].include?(connectivity_state)
fail "unexpected connectivity state: #{connectivity_state}"
end
end
end
def main
STDERR.puts '10 iterations, sleep 0.1 before killing thread'
run_multiple_killed_watches(10, 0.1)
STDERR.puts '1000 iterations, sleep 0.001 before killing thread'
run_multiple_killed_watches(1000, 0.001)
STDERR.puts '10000 iterations, sleep 0.00001 before killing thread'
run_multiple_killed_watches(10_000, 0.00001)
STDERR.puts '20000 iterations, sleep 0.00001 before killing thread'
run_multiple_killed_watches(20_000, 0.00001)
end
main
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