Can enable metrics on codex node startup.

CodexDistTestCore/CodexNodeContainer.cs

@@ -2,7 +2,7 @@
 {
     public class CodexNodeContainer
     {
-        public CodexNodeContainer(string name, int servicePort, string servicePortName, int apiPort, string containerPortName, int discoveryPort, int listenPort, string dataDir)
+        public CodexNodeContainer(string name, int servicePort, string servicePortName, int apiPort, string containerPortName, int discoveryPort, int listenPort, string dataDir, int metricsPort)
         {
             Name = name;
             ServicePort = servicePort;
@@ -12,6 +12,7 @@
             DiscoveryPort = discoveryPort;
             ListenPort = listenPort;
             DataDir = dataDir;
+            MetricsPort = metricsPort;
         }
 
         public string Name { get; }
@@ -22,6 +23,7 @@
         public int DiscoveryPort { get; }
         public int ListenPort { get; }
         public string DataDir { get; }
+        public int MetricsPort { get; }
     }
 
     public class CodexGroupNumberSource
@@ -57,7 +59,7 @@
             this.groupContainerFactory = groupContainerFactory;
         }
 
-        public CodexNodeContainer CreateNext()
+        public CodexNodeContainer CreateNext(OfflineCodexNodes offline)
         {
             var n = containerNameSource.GetNextNumber();
             return new CodexNodeContainer(
@@ -68,8 +70,15 @@
                 containerPortName: $"api-{n}",
                 discoveryPort: codexPortSource.GetNextNumber(),
                 listenPort: codexPortSource.GetNextNumber(),
-                dataDir: $"datadir{n}"
+                dataDir: $"datadir{n}",
+                metricsPort: GetMetricsPort(offline)
             );
         }
+
+        private int GetMetricsPort(OfflineCodexNodes offline)
+        {
+            if (offline.MetricsEnabled) return codexPortSource.GetNextNumber();
+            return 0;
+        }
     }
 }

CodexDistTestCore/Config/CodexDockerImage.cs

@@ -25,12 +25,12 @@ namespace CodexDistTestCore.Config
         {
             public List<V1EnvVar> Result { get; } = new List<V1EnvVar>();
 
-            public void Create(OfflineCodexNodes node, CodexNodeContainer environment)
+            public void Create(OfflineCodexNodes node, CodexNodeContainer container)
             {
-                AddVar("API_PORT", environment.ApiPort.ToString());
+                AddVar("API_PORT", container.ApiPort.ToString());
-                AddVar("DATA_DIR", environment.DataDir);
+                AddVar("DATA_DIR", container.DataDir);
-                AddVar("DISC_PORT", environment.DiscoveryPort.ToString());
+                AddVar("DISC_PORT", container.DiscoveryPort.ToString());
-                AddVar("LISTEN_ADDRS", $"/ip4/0.0.0.0/tcp/{environment.ListenPort}");
+                AddVar("LISTEN_ADDRS", $"/ip4/0.0.0.0/tcp/{container.ListenPort}");
 
                 if (node.BootstrapNode != null)
                 {
@@ -45,6 +45,11 @@ namespace CodexDistTestCore.Config
                 {
                     AddVar("STORAGE_QUOTA", node.StorageQuota.SizeInBytes.ToString()!);
                 }
+                if (node.MetricsEnabled)
+                {
+                    AddVar("METRICS_ADDR", "0.0.0.0");
+                    AddVar("METRICS_PORT", container.MetricsPort.ToString());
+                }
             }
 
             private void AddVar(string key, string value)

CodexDistTestCore/K8sManager.cs

@@ -60,18 +60,18 @@
 
         private CodexNodeGroup CreateOnlineCodexNodes(OfflineCodexNodes offline)
         {
-            var containers = CreateContainers(offline.NumberOfNodes);
+            var containers = CreateContainers(offline);
             var online = containers.Select(c => new OnlineCodexNode(log, fileManager, c)).ToArray();
             var result = new CodexNodeGroup(log, codexGroupNumberSource.GetNextCodexNodeGroupNumber(), offline, this, online);
             onlineCodexNodeGroups.Add(result);
             return result;
         }
 
-        private CodexNodeContainer[] CreateContainers(int number)
+        private CodexNodeContainer[] CreateContainers(OfflineCodexNodes offline)
         {
             var factory = new CodexNodeContainerFactory(codexGroupNumberSource);
             var containers = new List<CodexNodeContainer>();
-            for (var i = 0; i < number; i++) containers.Add(factory.CreateNext());
+            for (var i = 0; i < offline.NumberOfNodes; i++) containers.Add(factory.CreateNext(offline));
             return containers.ToArray();
         }
 

CodexDistTestCore/OfflineCodexNodes.cs

@@ -6,6 +6,7 @@
         IOfflineCodexNodes WithLogLevel(CodexLogLevel level);
         IOfflineCodexNodes WithBootstrapNode(IOnlineCodexNode node);
         IOfflineCodexNodes WithStorageQuota(ByteSize storageQuota);
+        IOfflineCodexNodes EnableMetrics();
         ICodexNodeGroup BringOnline();
     }
 
@@ -34,12 +35,14 @@
         public CodexLogLevel? LogLevel { get; private set; }
         public IOnlineCodexNode? BootstrapNode { get; private set; }
         public ByteSize? StorageQuota { get; private set; }
+        public bool MetricsEnabled { get; private set; }
 
         public OfflineCodexNodes(IK8sManager k8SManager, int numberOfNodes)
         {
             this.k8SManager = k8SManager;
             NumberOfNodes = numberOfNodes;
             Location = Location.Unspecified;
+            MetricsEnabled = false;
         }
 
         public ICodexNodeGroup BringOnline()
@@ -71,6 +74,12 @@
             return this;
         }
 
+        public IOfflineCodexNodes EnableMetrics()
+        {
+            MetricsEnabled = true;
+            return this;
+        }
+
         public string Describe()
         {
             var args = string.Join(',', DescribeArgs());

LongTests/BasicTests/TestInfraTests.cs

@@ -8,7 +8,9 @@ namespace LongTests.BasicTests
         [Test, UseLongTimeouts]
         public void TestInfraShouldHave1000AddressSpacesPerPod()
         {
-            var group = SetupCodexNodes(1000).BringOnline();
+            var group = SetupCodexNodes(1000)
+                            .EnableMetrics() // Increases use of port address space per node.
+                            .BringOnline();
 
             var nodeIds = group.Select(n => n.GetDebugInfo().id).ToArray();
 

Tests/BasicTests/SimpleTests.cs

@@ -79,6 +79,17 @@ namespace Tests.BasicTests
             PerformTwoClientTest(primary, secondary);
         }
 
+        [Test]
+        public void MetricsExample()
+        {
+            var group = SetupCodexNodes(1)
+                            .EnableMetrics()
+                            .BringOnline();
+
+            var metrics = BeginGatheringMetrics(group);
+            
+        }
+
         private void PerformTwoClientTest(IOnlineCodexNode primary, IOnlineCodexNode secondary)
         {
             primary.ConnectToPeer(secondary);