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-rw-r--r--activerecord/test/cases/connection_pool_test.rb126
1 files changed, 22 insertions, 104 deletions
diff --git a/activerecord/test/cases/connection_pool_test.rb b/activerecord/test/cases/connection_pool_test.rb
index 2ada2c1fe1..98759544b6 100644
--- a/activerecord/test/cases/connection_pool_test.rb
+++ b/activerecord/test/cases/connection_pool_test.rb
@@ -128,110 +128,6 @@ module ActiveRecord
end
- # The connection pool is "fair" if threads waiting for
- # connections receive them the order in which they began
- # waiting. This ensures that we don't timeout one HTTP request
- # even while well under capacity in a multi-threaded environment
- # such as a Java servlet container.
- #
- # We don't need strict fairness: if two connections become
- # available at the same time, it's fine of two threads that were
- # waiting acquire the connections out of order.
- #
- # Thus this test prepares waiting threads and then trickles in
- # available connections slowly, ensuring the wakeup order is
- # correct in this case.
- def test_checkout_fairness
- @pool.instance_variable_set(:@size, 10)
- expected = (1..@pool.size).to_a.freeze
- # check out all connections so our threads start out waiting
- conns = expected.map { @pool.checkout }
- mutex = Mutex.new
- order = []
- errors = []
-
- threads = expected.map do |i|
- t = Thread.new {
- begin
- @pool.checkout # connection return value never checked back in
- mutex.synchronize { order << i }
- rescue => e
- mutex.synchronize { errors << e }
- end
- }
- Thread.pass until t.status == "sleep"
- t
- end
-
- # this should wake up the waiting threads one by one in order
- conns.each { |conn| @pool.checkin(conn); sleep 0.1 }
-
- threads.each(&:join)
-
- raise errors.first if errors.any?
-
- assert_equal(expected, order)
- end
-
- # As mentioned in #test_checkout_fairness, we don't care about
- # strict fairness. This test creates two groups of threads:
- # group1 whose members all start waiting before any thread in
- # group2. Enough connections are checked in to wakeup all
- # group1 threads, and the fact that only group1 and no group2
- # threads acquired a connection is enforced.
- def test_checkout_fairness_by_group
- @pool.instance_variable_set(:@size, 10)
- # take all the connections
- conns = (1..10).map { @pool.checkout }
- mutex = Mutex.new
- successes = [] # threads that successfully got a connection
- errors = []
-
- make_thread = proc do |i|
- t = Thread.new {
- begin
- @pool.checkout # connection return value never checked back in
- mutex.synchronize { successes << i }
- rescue => e
- mutex.synchronize { errors << e }
- end
- }
- Thread.pass until t.status == "sleep"
- t
- end
-
- # all group1 threads start waiting before any in group2
- group1 = (1..5).map(&make_thread)
- group2 = (6..10).map(&make_thread)
-
- # checkin n connections back to the pool
- checkin = proc do |n|
- n.times do
- c = conns.pop
- @pool.checkin(c)
- end
- end
-
- checkin.call(group1.size) # should wake up all group1
-
- loop do
- sleep 0.1
- break if mutex.synchronize { (successes.size + errors.size) == group1.size }
- end
-
- winners = mutex.synchronize { successes.dup }
- checkin.call(group2.size) # should wake up everyone remaining
-
- group1.each(&:join)
- group2.each(&:join)
-
- assert_equal((1..group1.size).to_a, winners.sort)
-
- if errors.any?
- raise errors.first
- end
- end
-
def test_automatic_reconnect=
pool = ConnectionPool.new ActiveRecord::Base.connection_pool.spec
assert pool.automatic_reconnect
@@ -255,6 +151,28 @@ module ActiveRecord
def test_pool_sets_connection_visitor
assert @pool.connection.visitor.is_a?(Arel::Visitors::ToSql)
end
+
+ def test_timeout_spec_keys
+ # 'wait_timeout' is supported for backwards compat,
+ # 'checkout_timeout' is preferred to avoid conflicting
+ # with mysql2 adapters key of name 'wait_timeout' but
+ # different meaning.
+ config = ActiveRecord::Base.connection_pool.spec.config.merge(:wait_timeout => nil, :connection_timeout => nil)
+ method = ActiveRecord::Base.connection_pool.spec.adapter_method
+
+ pool = ConnectionPool.new ActiveRecord::Base::ConnectionSpecification.new(config.merge(:wait_timeout => 1), method)
+ assert_equal 1, pool.instance_variable_get(:@timeout)
+ pool.disconnect!
+
+ pool = ConnectionPool.new ActiveRecord::Base::ConnectionSpecification.new(config.merge(:checkout_timeout => 1), method)
+ assert_equal 1, pool.instance_variable_get(:@timeout)
+ pool.disconnect!
+
+ pool = ConnectionPool.new ActiveRecord::Base::ConnectionSpecification.new(config.merge(:wait_timeout => 6000, :checkout_timeout => 1), method)
+ assert_equal 1, pool.instance_variable_get(:@timeout)
+ pool.disconnect!
+ end
+
end
end
end