public void FailureDetectorRegistry_must_mark_node_as_available_after_explicit_removal_of_connection_and_receiving_heartbeat_again
()
{
var timeIntervals = new List <long>()
{
0, 1000, 100, 1100, 1100, 1100, 1100, 1100, 100
};
var fd =
FailureDetectorSpecHelpers.CreateFailureDetectorRegistry(
clock: FailureDetectorSpecHelpers.FakeTimeGenerator(timeIntervals));
Assert.IsFalse(fd.IsMonitoring("resource1"));
fd.Heartbeat("resource1"); //0
fd.Heartbeat("resource1"); //1000
fd.Heartbeat("resource1"); //1100
Assert.IsTrue(fd.IsAvailable("resource1")); //2200
Assert.IsTrue(fd.IsMonitoring("resource1"));
fd.Remove("resource1");
Assert.IsFalse(fd.IsMonitoring("resource1"));
Assert.IsTrue(fd.IsAvailable("resource1")); //3300
//receives a heartbeat from an explicitly removed node
fd.Heartbeat("resource1"); //4400
fd.Heartbeat("resource1"); //5500
fd.Heartbeat("resource1"); //6600
Assert.IsTrue(fd.IsAvailable("resource1")); //6700
Assert.IsTrue(fd.IsMonitoring("resource1"));
}
public void FailureDetectorRegistry_must_mark_node_as_available_after_a_series_of_successful_heartbeats()
{
var timeIntervals = new List <long>()
{
0L, 1000L, 100L, 100L
};
var fd =
FailureDetectorSpecHelpers.CreateFailureDetectorRegistry(
clock: FailureDetectorSpecHelpers.FakeTimeGenerator(timeIntervals));
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
Assert.IsTrue(fd.IsAvailable("resource1"));
}
public void FailureDetectorRegistry_must_mark_node_as_available_after_explicit_removal_of_connection()
{
var timeIntervals = new List <long>()
{
0, 1000, 100, 100, 100
};
var fd =
FailureDetectorSpecHelpers.CreateFailureDetectorRegistry(
clock: FailureDetectorSpecHelpers.FakeTimeGenerator(timeIntervals));
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
Assert.IsTrue(fd.IsAvailable("resource1"));
fd.Remove("resource1");
Assert.IsTrue(fd.IsAvailable("resource1"));
}
public void FailureDetectorRegistry_must_mark_node_as_dead_if_heartbeats_are_missed()
{
var timeIntervals = new List <long>()
{
0L, 1000L, 100L, 100L, 4000L, 3000L
};
var fd =
FailureDetectorSpecHelpers.CreateFailureDetectorRegistry(
clock: FailureDetectorSpecHelpers.FakeTimeGenerator(timeIntervals));
fd.Heartbeat("resource1"); //0
fd.Heartbeat("resource1"); //1000
fd.Heartbeat("resource1"); //1100
Assert.IsTrue(fd.IsAvailable("resource1")); //1200
fd.Heartbeat("resource2"); //5200, but unrelated resouce
Assert.IsFalse(fd.IsAvailable("resource1"));
}
public void FailureDetectorRegistry_must_accept_some_configured_missing_heartbeats()
{
var timeIntervals = new List <long>()
{
0, 1000, 1000, 1000, 4000, 1000, 1000
};
var fd =
FailureDetectorSpecHelpers.CreateFailureDetectorRegistry(8.0d, 1000, TimeSpan.FromMilliseconds(100), TimeSpan.FromSeconds(3), //changed to 3 seconds
TimeSpan.FromSeconds(1), FailureDetectorSpecHelpers.FakeTimeGenerator(timeIntervals));
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
fd.Heartbeat("resource1");
Assert.IsTrue(fd.IsAvailable("resource1"));
fd.Heartbeat("resource1");
Assert.IsTrue(fd.IsAvailable("resource1"));
}
