fix: compatibility with extensions

Author: phnx47

Directory.Build.props

@@ -3,7 +3,7 @@
     <LangVersion>9.0</LangVersion>
     <Authors>prom-client-net contributors</Authors>
     <Copyright>Copyright © prom-client-net</Copyright>
-    <VersionPrefix>4.5.0</VersionPrefix>
+    <VersionPrefix>4.5.1</VersionPrefix>
     <Description>.NET client for Prometheus</Description>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <RepositoryType>git</RepositoryType>

src/Prometheus.Client/Collectors/DefaultCollectors.cs

@@ -5,7 +5,12 @@ namespace Prometheus.Client.Collectors
 {
     public static class DefaultCollectors
     {
-        public static ICollectorRegistry UseDefaultCollectors(this ICollectorRegistry registry, string prefixName = "")
+        public static ICollectorRegistry UseDefaultCollectors(this ICollectorRegistry registry)
+        {
+            return UseDefaultCollectors(registry, "");
+        }
+
+        public static ICollectorRegistry UseDefaultCollectors(this ICollectorRegistry registry, string prefixName)
         {
             registry.UseDotNetStats(prefixName);
             registry.UseProcessStats(prefixName);

src/Prometheus.Client/Collectors/DotNetStats/CollectorRegistryExtensions.cs

@@ -2,7 +2,12 @@ namespace Prometheus.Client.Collectors.DotNetStats
 {
     public static class CollectorRegistryExtensions
     {
-        public static ICollectorRegistry UseDotNetStats(this ICollectorRegistry registry, string prefixName = "")
+        public static ICollectorRegistry UseDotNetStats(this ICollectorRegistry registry)
+        {
+            return UseDotNetStats(registry, "");
+        }
+
+        public static ICollectorRegistry UseDotNetStats(this ICollectorRegistry registry, string prefixName)
         {
             registry.Add(new GCCollectionCountCollector(prefixName));
             registry.Add(new GCTotalMemoryCollector(prefixName));

src/Prometheus.Client/Collectors/DotNetStats/GCCollectionCountCollector.cs

@@ -10,7 +10,12 @@ public class GCCollectionCountCollector : ICollector
         private readonly string _name;
         private readonly string[] _genNames;
 
-        public GCCollectionCountCollector(string prefixName = "")
+        public GCCollectionCountCollector()
+            : this("")
+        {
+        }
+
+        public GCCollectionCountCollector(string prefixName)
         {
             _name = prefixName + "dotnet_collection_count_total";
             Configuration = new CollectorConfiguration(nameof(GCCollectionCountCollector));

src/Prometheus.Client/Collectors/DotNetStats/GCTotalMemoryCollector.cs

@@ -9,7 +9,12 @@ public class GCTotalMemoryCollector : ICollector
         private const string _help = "Total known allocated memory";
         private readonly string _name;
 
-        public GCTotalMemoryCollector(string prefixName = "")
+        public GCTotalMemoryCollector()
+            : this("")
+        {
+        }
+
+        public GCTotalMemoryCollector(string prefixName)
         {
             _name = prefixName + "dotnet_totalmemory";
             Configuration = new CollectorConfiguration(nameof(GCTotalMemoryCollector));

src/Prometheus.Client/Collectors/ProcessStats/CollectorRegistryExtensions.cs

@@ -4,7 +4,12 @@ namespace Prometheus.Client.Collectors.ProcessStats
 {
     public static class CollectorRegistryExtensions
     {
-        public static ICollectorRegistry UseProcessStats(this ICollectorRegistry registry, string prefixName = "")
+        public static ICollectorRegistry UseProcessStats(this ICollectorRegistry registry)
+        {
+            return UseProcessStats(registry, "");
+        }
+
+        public static ICollectorRegistry UseProcessStats(this ICollectorRegistry registry, string prefixName)
         {
             registry.Add(new ProcessCollector(Process.GetCurrentProcess(), prefixName));
 

src/Prometheus.Client/Collectors/ProcessStats/ProcessCollector.cs

@@ -22,7 +22,12 @@ public class ProcessCollector : ICollector
         private readonly Process _process;
         private readonly double _processStartTime;
 
-        public ProcessCollector(Process process, string prefixName = "")
+        public ProcessCollector(Process process)
+            : this(process, "")
+        {
+        }
+
+        public ProcessCollector(Process process, string prefixName)
         {
             _cpuSecondsTotalName = prefixName + "process_cpu_seconds_total";
             _virtualBytesName = prefixName + "process_virtual_bytes";
@@ -36,16 +41,7 @@ public ProcessCollector(Process process, string prefixName = "")
             Configuration = new CollectorConfiguration(nameof(ProcessCollector));
 
             _processStartTime = ((DateTimeOffset)_process.StartTime.ToUniversalTime()).ToUnixTimeSeconds();
-            MetricNames = new[]
-            {
-                _cpuSecondsTotalName,
-                _virtualBytesName,
-                _workingSetName,
-                _privateBytesName,
-                _numThreadsName,
-                _processIdName,
-                _startTimeSecondsName
-            };
+            MetricNames = new[] { _cpuSecondsTotalName, _virtualBytesName, _workingSetName, _privateBytesName, _numThreadsName, _processIdName, _startTimeSecondsName };
         }
 
         public CollectorConfiguration Configuration { get; }