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#
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright 2012-2016, Chef Software Inc.
# License:: Apache License, Version 2.0
#
# 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 File.expand_path("../../spec_helper", __FILE__)
require "chef/client"
describe Chef::RunLock do
default_cache_path = windows? ? 'C:\chef' : "/var/chef"
default_pid_location = windows? ? 'C:\chef\cache\chef-client-running.pid' : "/var/chef/cache/chef-client-running.pid"
describe "when first created" do
it "locates the lockfile in the file cache path by default" do
allow(Chef::Config).to receive(:cache_path).and_return(default_cache_path)
run_lock = Chef::RunLock.new(Chef::Config.lockfile)
expect(run_lock.runlock_file).to eq(default_pid_location)
end
it "locates the lockfile in the user-configured path when set" do
Chef::Config.lockfile = "/tmp/chef-client-running.pid"
run_lock = Chef::RunLock.new(Chef::Config.lockfile)
expect(run_lock.runlock_file).to eq("/tmp/chef-client-running.pid")
end
end
describe "acquire" do
let(:lockfile) { "/tmp/chef-client-running.pid" }
subject(:runlock) { Chef::RunLock.new(lockfile) }
def stub_unblocked_run
allow(runlock).to receive(:test).and_return(true)
end
def stub_blocked_run(duration)
allow(runlock).to receive(:test).and_return(false)
allow(runlock).to receive(:wait) { sleep(duration) }
allow(runlock).to receive(:runpid).and_return(666) # errors read blocking pid
end
describe "when Chef::Config[:run_lock_timeout] is not set (set to default)" do
describe "and the lockfile is not locked by another client run" do
it "should not wait" do
stub_unblocked_run
expect_any_instance_of(Chef::RunLock).not_to receive(:wait)
runlock.acquire
end
end
describe "and the lockfile is locked by another client run" do
it "should wait for the lock to be released" do
stub_blocked_run(0.001)
expect(runlock).to receive(:wait)
runlock.acquire
end
end
end
describe "when Chef::Config[:run_lock_timeout] is set to 0" do
before(:each) do
@default_timeout = Chef::Config[:run_lock_timeout]
Chef::Config[:run_lock_timeout] = 0
end
after(:each) do
Chef::Config[:run_lock_timeout] = @default_timeout
end
describe "and the lockfile is not locked by another client run" do
it "should acquire the lock" do
stub_unblocked_run
expect(runlock).not_to receive(:wait)
runlock.acquire
end
end
describe "and the lockfile is locked by another client run" do
it "should raise Chef::Exceptions::RunLockTimeout" do
stub_blocked_run(0.001)
expect(runlock).not_to receive(:wait)
expect{ runlock.acquire }.to raise_error(Chef::Exceptions::RunLockTimeout)
end
end
end
describe "when Chef::Config[:run_lock_timeout] is set to >0" do
before(:each) do
@default_timeout = Chef::Config[:run_lock_timeout]
@timeout = 0.1
Chef::Config[:run_lock_timeout] = @timeout
end
after(:each) do
Chef::Config[:run_lock_timeout] = @default_timeout
end
describe "and the lockfile is not locked by another client run" do
it "should acquire the lock" do
stub_unblocked_run
expect(runlock).not_to receive(:wait)
runlock.acquire
end
end
describe "and the lockfile is locked by another client run" do
describe "and the lock is released before the timeout expires" do
it "should acquire the lock" do
stub_blocked_run(@timeout/2.0)
expect(runlock).to receive(:wait)
expect{ runlock.acquire }.not_to raise_error
end
end
describe "and the lock is not released before the timeout expires" do
it "should raise a RunLockTimeout exception" do
stub_blocked_run(2.0)
expect(runlock).to receive(:wait)
expect{ runlock.acquire }.to raise_error(Chef::Exceptions::RunLockTimeout)
end
end
end
end
end
# See also: spec/functional/run_lock_spec
end
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