public void TestFixedTargetAndRateBehaveCorrectly()
{
var strategy = new LocalizedSamplingStrategy();
strategy.Rules.Add(new Core.Sampling.Local.SamplingRule("name", "test", "get", 10, 0.05));
int count = 0;
// fill the fixed target rate
Action action = () =>
{
var input = new SamplingInput("name", "test", "get", "", "");
if (strategy.ShouldTrace(input).SampleDecision == SampleDecision.Sampled)
{
Interlocked.Increment(ref count);
}
};
var actions = Enumerable.Repeat(action, 10).ToArray();
Parallel.Invoke(actions);
Assert.AreEqual(10, count);
count = 0;
var samplingInput = new SamplingInput("name", "test", "get", "", "");
for (int i = 0; i < 200; i++)
{
count += strategy.ShouldTrace(samplingInput).SampleDecision == SampleDecision.Sampled ? 1 : 0;
}
// Default sample rate is 5%. The chance that count == 0 after 200 tries is 0.003%.
Assert.IsTrue(count > 0);
Assert.IsTrue(count < 50);
}
public void TestLoadJsonConfiguration1() // Version 2
{
#if NET45
ConfigurationManager.AppSettings[ManifestKey] = @"JSONs\DefaultSamplingRules1.json";
AppSettings.Reset();
var strategy = new LocalizedSamplingStrategy(AppSettings.SamplingRuleManifest);
#else
_xRayOtions.SamplingRuleManifest = $"JSONs{Path.DirectorySeparatorChar}DefaultSamplingRules.json";
var strategy = new LocalizedSamplingStrategy(_xRayOtions.SamplingRuleManifest);
#endif
Assert.AreEqual(2, strategy.Rules.Count);
Assert.AreEqual(@"checkout", strategy.Rules[0].Host);
Assert.AreEqual(@"POST", strategy.Rules[0].HttpMethod);
Assert.AreEqual(@"/checkout", strategy.Rules[0].UrlPath);
Assert.AreEqual(10, strategy.Rules[0].FixedTarget);
Assert.AreEqual(@"0.3", strategy.Rules[0].Rate.ToString("0.0"));
Assert.AreEqual("This is the first rule.", strategy.Rules[0].Description);
Assert.AreEqual(@"base.com", strategy.Rules[1].Host);
Assert.AreEqual(@"GET", strategy.Rules[1].HttpMethod);
Assert.AreEqual(@"*", strategy.Rules[1].UrlPath);
Assert.AreEqual(100, strategy.Rules[1].FixedTarget);
Assert.AreEqual(@"0.5", strategy.Rules[1].Rate.ToString("0.0"));
Assert.AreEqual("Rule for base.com", strategy.Rules[1].Description);
}
public void TestLoadSamplingRulesWithInvalidVersion2()
{
#if NET45
ConfigurationManager.AppSettings[ManifestKey] = @"JSONs\SamplingRulesInvalidV2.json";
AppSettings.Reset();
var strategy = new LocalizedSamplingStrategy(AppSettings.SamplingRuleManifest);
#else
_xRayOtions.SamplingRuleManifest = $"JSONs{Path.DirectorySeparatorChar}SamplingRulesWithoutDefault.json";
var strategy = new LocalizedSamplingStrategy(_xRayOtions.SamplingRuleManifest);
#endif
}
public void TestLoadSamplingRulesWithoutDefaultRule()
{
#if NET45
ConfigurationManager.AppSettings[ManifestKey] = @"JSONs\SamplingRulesWithoutDefault.json";
AppSettings.Reset();
var strategy = new LocalizedSamplingStrategy(AppSettings.SamplingRuleManifest);
#else
_xRayOtions.SamplingRuleManifest = @"JSONs\SamplingRulesWithoutDefault.json";
var strategy = new LocalizedSamplingStrategy(_xRayOtions.SamplingRuleManifest);
#endif
}
public void TestDefaultSamplingRuleWhenNoConfigurationSpecified()
{
var strategy = new LocalizedSamplingStrategy();
Assert.AreEqual(0, strategy.Rules.Count);
Core.Sampling.Local.SamplingRule rule = strategy.DefaultRule;
Assert.AreEqual("*", rule.Host);
Assert.AreEqual("*", rule.UrlPath);
Assert.AreEqual("*", rule.HttpMethod);
Assert.AreEqual(1, rule.FixedTarget);
Assert.AreEqual("0.05", rule.Rate.ToString("0.00"));
}
/// <summary>
/// Initializes a new instance of the <see cref="AWSXRayRecorder" /> class
/// with given instance of <see cref="ISegmentEmitter" />.
/// </summary>
/// <param name="emitter">Segment emitter</param>
internal AWSXRayRecorder(ISegmentEmitter emitter) : base(emitter)
{
PopulateContexts();
if (IsLambda())
{
SamplingStrategy = new LocalizedSamplingStrategy();
}
else
{
SamplingStrategy = new DefaultSamplingStrategy();
}
}
public void TestDefaultRuleWithRequest()
{
var request = new HttpRequestMessage
{
RequestUri = new Uri(@"http://www.amazon.com/api/product"),
Method = HttpMethod.Post
};
request.Headers.Add("Host", "www.amazon.com");
var strategy = new LocalizedSamplingStrategy();
Assert.AreEqual(SampleDecision.Sampled, strategy.Sample(request));
}
/// <summary>
/// Initializes a new instance of the <see cref="AWSXRayRecorder" /> class
/// with given instance of <see cref="ISegmentEmitter" /> and instance of <see cref="XRayOptions"/>.
/// </summary>
/// <param name="emitter">Instance of <see cref="ISegmentEmitter"/>.</param>
/// <param name="options">Instance of <see cref="XRayOptions"/>.</param>
internal AWSXRayRecorder(ISegmentEmitter emitter, XRayOptions options) : base(emitter)
{
XRayOptions = options;
PopulateContexts();
if (IsLambda())
{
SamplingStrategy = new LocalizedSamplingStrategy(options.SamplingRuleManifest);
}
else
{
SamplingStrategy = new DefaultSamplingStrategy(options.SamplingRuleManifest);
}
}
public void TestDefaultRuleWithRequest()
{
var request = new HttpRequestMessage
{
RequestUri = new Uri(@"http://www.amazon.com/api/product"),
Method = HttpMethod.Post
};
request.Headers.Add("Host", "www.amazon.com");
var strategy = new LocalizedSamplingStrategy();
string host = request.Headers.Host;
string url = request.RequestUri.AbsolutePath;
string method = request.Method.Method;
SamplingInput samplingInput = new SamplingInput(host, url, method, "", "");
SamplingResponse samplingResponse = strategy.ShouldTrace(samplingInput);
Assert.AreEqual(SampleDecision.Sampled, samplingResponse.SampleDecision);
Assert.IsTrue(string.IsNullOrEmpty(samplingResponse.RuleName));
}
/// <summary>
/// Initializes a new instance of the <see cref="AWSXRayRecorder" /> class
/// with given instance of <see cref="ISegmentEmitter" />.
/// </summary>
/// <param name="emitter">Segment emitter</param>
internal AWSXRayRecorder(ISegmentEmitter emitter) : base(emitter)
{
PopulateContexts();
SamplingStrategy = new LocalizedSamplingStrategy(XRayOptions.SamplingRuleManifest);
}
/// <summary>
/// Initializes a new instance of the <see cref="AWSXRayRecorder" /> class
/// with given instance of <see cref="ISegmentEmitter" /> and instance of <see cref="XRayOptions"/>.
/// </summary>
/// <param name="emitter">Instance of <see cref="ISegmentEmitter"/>.</param>
/// <param name="options">Instance of <see cref="XRayOptions"/>.</param>
public AWSXRayRecorder(ISegmentEmitter emitter, XRayOptions options) : base(emitter)
{
XRayOptions = options;
PopulateContexts();
SamplingStrategy = new LocalizedSamplingStrategy(options.SamplingRuleManifest);
}
