fix MetricNameDescriptor deprecation

Signed-off-by: Melissa Kilby <[email protected]>

Author: incertum

Sources/Prometheus/MetricDescriptor.swift

@@ -28,10 +28,10 @@ public struct MetricNameDescriptor {
     public let metricName: String
 
     /// The required suffix describing the metric's unit (e.g., `total`).
-    public let unitName: String
+    public let unitName: String?
 
     /// The required help text for the metric. If a non-empty string is provided, it will be emitted as a `# HELP` line in the exposition format.
-    public let helpText: String
+    public let helpText: String?
 
     /// Creates a new ``MetricNameDescriptor`` that defines the components of a fully qualified Prometheus metric name.
     ///

Sources/Prometheus/PrometheusCollectorRegistry.swift

@@ -239,7 +239,7 @@ public final class PrometheusCollectorRegistry: Sendable {
     /// - Parameter descriptor: An ``MetricNameDescriptor`` that provides the fully qualified name for the metric.
     /// - Returns: A ``Counter`` that is registered with this ``PrometheusCollectorRegistry``
     public func makeCounter(descriptor: MetricNameDescriptor) -> Counter {
-        return self._makeCounter(name: descriptor.name, labels: [], help: descriptor.helpText)
+        return self._makeCounter(name: descriptor.name, labels: [], help: descriptor.helpText ?? "")
     }
 
     /// Creates a new ``Counter`` collector or returns the already existing one with the same name.
@@ -283,7 +283,7 @@ public final class PrometheusCollectorRegistry: Sendable {
     ///                     what’s actually being measured in a Prometheus metric.
     /// - Returns: A ``Counter`` that is registered with this ``PrometheusCollectorRegistry``
     public func makeCounter(descriptor: MetricNameDescriptor, labels: [(String, String)]) -> Counter {
-        return self._makeCounter(name: descriptor.name, labels: labels, help: descriptor.helpText)
+        return self._makeCounter(name: descriptor.name, labels: labels, help: descriptor.helpText ?? "")
     }
 
     /// Creates a new ``Gauge`` collector or returns the already existing one with the same name.
@@ -321,7 +321,7 @@ public final class PrometheusCollectorRegistry: Sendable {
     /// - Parameter descriptor: An ``MetricNameDescriptor`` that provides the fully qualified name for the metric.
     /// - Returns: A ``Gauge`` that is registered with this ``PrometheusCollectorRegistry``
     public func makeGauge(descriptor: MetricNameDescriptor) -> Gauge {
-        return self._makeGauge(name: descriptor.name, labels: [], help: descriptor.helpText)
+        return self._makeGauge(name: descriptor.name, labels: [], help: descriptor.helpText ?? "")
     }
 
     /// Creates a new ``Gauge`` collector or returns the already existing one with the same name.
@@ -365,7 +365,7 @@ public final class PrometheusCollectorRegistry: Sendable {
     ///                     what’s actually being measured in a Prometheus metric.
     /// - Returns: A ``Gauge`` that is registered with this ``PrometheusCollectorRegistry``
     public func makeGauge(descriptor: MetricNameDescriptor, labels: [(String, String)]) -> Gauge {
-        return self._makeGauge(name: descriptor.name, labels: labels, help: descriptor.helpText)
+        return self._makeGauge(name: descriptor.name, labels: labels, help: descriptor.helpText ?? "")
     }
 
     /// Creates a new ``DurationHistogram`` collector or returns the already existing one with the same name.
@@ -410,7 +410,7 @@ public final class PrometheusCollectorRegistry: Sendable {
             name: descriptor.name,
             labels: [],
             buckets: buckets,
-            help: descriptor.helpText
+            help: descriptor.helpText ?? ""
         )
     }
 
@@ -485,7 +485,7 @@ public final class PrometheusCollectorRegistry: Sendable {
             name: descriptor.name,
             labels: labels,
             buckets: buckets,
-            help: descriptor.helpText
+            help: descriptor.helpText ?? ""
         )
     }
 
@@ -531,7 +531,7 @@ public final class PrometheusCollectorRegistry: Sendable {
             name: descriptor.name,
             labels: [],
             buckets: buckets,
-            help: descriptor.helpText
+            help: descriptor.helpText ?? ""
         )
     }
 
@@ -606,7 +606,7 @@ public final class PrometheusCollectorRegistry: Sendable {
             name: descriptor.name,
             labels: labels,
             buckets: buckets,
-            help: descriptor.helpText
+            help: descriptor.helpText ?? ""
         )
     }