62 lines
2.2 KiB
C#
62 lines
2.2 KiB
C#
using NUnit.Framework;
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using NUnit.Framework.Constraints;
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namespace CodexDistTestCore
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{
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public interface IMetricsAccess
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{
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void AssertThat(IOnlineCodexNode node, string metricName, IResolveConstraint constraint, string message = "");
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}
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public class MetricsAccess : IMetricsAccess
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{
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private readonly MetricsQuery query;
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private readonly OnlineCodexNode[] nodes;
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public MetricsAccess(MetricsQuery query, OnlineCodexNode[] nodes)
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{
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this.query = query;
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this.nodes = nodes;
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}
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public void AssertThat(IOnlineCodexNode node, string metricName, IResolveConstraint constraint, string message = "")
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{
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var n = (OnlineCodexNode)node;
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CollectionAssert.Contains(nodes, n, "Incorrect test setup: Attempt to get metrics for OnlineCodexNode from the wrong MetricsAccess object. " +
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"(This CodexNode is tracked by a different instance.)");
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var metricSet = GetMetricWithTimeout(metricName, n);
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var metricValue = metricSet.Values[0].Value;
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Assert.That(metricValue, constraint, message);
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}
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private MetricsSet GetMetricWithTimeout(string metricName, OnlineCodexNode node)
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{
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var start = DateTime.UtcNow;
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while (true)
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{
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var mostRecent = GetMostRecent(metricName, node);
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if (mostRecent != null) return mostRecent;
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if (DateTime.UtcNow - start > Timing.WaitForMetricTimeout())
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{
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Assert.Fail($"Timeout: Unable to get metric '{metricName}'.");
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throw new TimeoutException();
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}
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Utils.Sleep(TimeSpan.FromSeconds(2));
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}
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}
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private MetricsSet? GetMostRecent(string metricName, OnlineCodexNode node)
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{
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var result = query.GetMostRecent(metricName);
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if (result == null) return null;
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var pod = node.Group.PodInfo!;
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var instance = $"{pod.Ip}:{node.Container.MetricsPort}";
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return result.Sets.SingleOrDefault(r => r.Instance == instance);
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}
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}
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}
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