public void TestBackoffStrategyCoerce()
{
var c = new Config();
c.Set("backoff_strategy", "exponential");
Assert.AreEqual(typeof(ExponentialStrategy), c.BackoffStrategy.GetType());
c.Set("backoff_strategy", "");
Assert.AreEqual(typeof(ExponentialStrategy), c.BackoffStrategy.GetType());
c.Set("backoff_strategy", null);
Assert.IsNull(c.BackoffStrategy);
c.Set("backoff_strategy", "full_jitter");
Assert.AreEqual(typeof(FullJitterStrategy), c.BackoffStrategy.GetType());
Assert.Throws<Exception>(() => c.Set("backoff_strategy", "invalid"));
var fullJitterStrategy = new FullJitterStrategy();
c.Set("backoff_strategy", fullJitterStrategy);
Assert.AreEqual(fullJitterStrategy, c.BackoffStrategy);
var exponentialStrategy = new ExponentialStrategy();
c.Set("backoff_strategy", exponentialStrategy);
Assert.AreEqual(exponentialStrategy, c.BackoffStrategy);
Assert.Throws<Exception>(() => c.Set("backoff_strategy", new object()));
}
public void TestExponentialBackoff()
{
var expected = new[]
{
TimeSpan.FromSeconds(1),
TimeSpan.FromSeconds(2),
TimeSpan.FromSeconds(8),
TimeSpan.FromSeconds(32)
};
var backoffStrategy = new ExponentialStrategy();
var config = new NsqConfig();
config.BackoffMultiplier = TimeSpan.FromSeconds(1);
var attempts = new[] { 1, 2, 4, 6 };
for (var i = 0; i < attempts.Length; i++)
{
var result = backoffStrategy.Calculate(config, attempts[i]);
Assert.AreEqual(expected[i], result.Duration,
string.Format("wrong backoff duration for attempt {0}", attempts[i]));
}
}
public void TestBackoffStrategyCoerce()
{
var c = new NsqConfig();
c.Set("backoff_strategy", "exponential");
Assert.AreEqual(typeof(ExponentialStrategy), c.BackoffStrategy.GetType());
c.Set("backoff_strategy", "");
Assert.AreEqual(typeof(ExponentialStrategy), c.BackoffStrategy.GetType());
c.Set("backoff_strategy", null);
Assert.IsNull(c.BackoffStrategy);
c.Set("backoff_strategy", "full_jitter");
Assert.AreEqual(typeof(FullJitterStrategy), c.BackoffStrategy.GetType());
AssertHelper.Throws <Exception>(() => c.Set("backoff_strategy", "invalid"));
var fullJitterStrategy = new FullJitterStrategy();
c.Set("backoff_strategy", fullJitterStrategy);
Assert.AreEqual(fullJitterStrategy, c.BackoffStrategy);
var exponentialStrategy = new ExponentialStrategy();
c.Set("backoff_strategy", exponentialStrategy);
Assert.AreEqual(exponentialStrategy, c.BackoffStrategy);
AssertHelper.Throws <Exception>(() => c.Set("backoff_strategy", new object()));
}
public void TestExponentialBackoff()
{
var expected = new[]
{
TimeSpan.FromSeconds(1),
TimeSpan.FromSeconds(2),
TimeSpan.FromSeconds(8),
TimeSpan.FromSeconds(32)
};
var backoffStrategy = new ExponentialStrategy();
var config = new Config();
var attempts = new[] { 0, 1, 3, 5 };
for (int i = 0; i < attempts.Length; i++)
{
var result = backoffStrategy.Calculate(config, attempts[i]);
Assert.AreEqual(expected[i], result, string.Format("wrong backoff duration for attempt {0}", attempts[i]));
}
}
