Remove explicit order, depend on enum ordering instead

Author: mhalbritter

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/BraveAutoConfiguration.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.actuate.autoconfigure.tracing;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
@@ -176,7 +177,7 @@ static class BraveNoBaggageConfiguration {
 		Factory propagationFactory(TracingProperties properties) {
 			List<Factory> injectorFactories = PropagationFactoryFactory
 				.factoriesFor(properties.getPropagation().getType());
-			List<Factory> extractorFactories = PropagationFactoryFactory.factoriesFor(PropagationType.orderedValues());
+			List<Factory> extractorFactories = PropagationFactoryFactory.factoriesFor(PropagationType.values());
 			return new CompositePropagationFactory(injectorFactories, extractorFactories);
 		}
 
@@ -199,7 +200,7 @@ BaggagePropagation.FactoryBuilder propagationFactoryBuilder(
 			List<Factory> injectorFactories = PropagationFactoryFactory.factoriesFor(BRAVE_BAGGAGE_MANAGER,
 					this.tracingProperties.getPropagation().getType());
 			List<Factory> extractorFactories = PropagationFactoryFactory.factoriesFor(BRAVE_BAGGAGE_MANAGER,
-					PropagationType.orderedValues());
+					PropagationType.values());
 			Factory delegate = new CompositePropagationFactory(injectorFactories, extractorFactories);
 			FactoryBuilder builder = BaggagePropagation.newFactoryBuilder(delegate);
 			baggagePropagationCustomizers.orderedStream().forEach((customizer) -> customizer.customize(builder));
@@ -309,6 +310,14 @@ private static List<Factory> factoriesFor(BaggageManager baggageManager, Collect
 			return result;
 		}
 
+		private static List<Factory> factoriesFor(PropagationType[] types) {
+			return factoriesFor(null, Arrays.stream(types).toList());
+		}
+
+		private static List<Factory> factoriesFor(BaggageManager baggageManager, PropagationType[] types) {
+			return factoriesFor(baggageManager, Arrays.stream(types).toList());
+		}
+
 	}
 
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/OpenTelemetryAutoConfiguration.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.actuate.autoconfigure.tracing;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
@@ -196,8 +197,7 @@ TextMapPropagator textMapPropagatorWithBaggage(OtelCurrentTraceContext otelCurre
 			List<TextMapPropagator> injectors = new ArrayList<>(
 					TextMapPropagatorFactory.forTypes(this.tracingProperties.getPropagation().getType(), true));
 			injectors.add(baggagePropagator);
-			List<TextMapPropagator> extractors = TextMapPropagatorFactory.forTypes(PropagationType.orderedValues(),
-					true);
+			List<TextMapPropagator> extractors = TextMapPropagatorFactory.forTypes(PropagationType.values(), true);
 			return new CompositeTextMapPropagator(injectors, extractors, List.of(baggagePropagator));
 		}
 
@@ -219,8 +219,7 @@ static class NoBaggageConfiguration {
 		TextMapPropagator textMapPropagator(TracingProperties properties) {
 			List<TextMapPropagator> injectors = TextMapPropagatorFactory.forTypes(properties.getPropagation().getType(),
 					false);
-			List<TextMapPropagator> extractors = TextMapPropagatorFactory.forTypes(PropagationType.orderedValues(),
-					false);
+			List<TextMapPropagator> extractors = TextMapPropagatorFactory.forTypes(PropagationType.values(), false);
 			return new CompositeTextMapPropagator(injectors, extractors);
 		}
 
@@ -296,6 +295,10 @@ private static List<TextMapPropagator> forTypes(Collection<PropagationType> type
 			return result;
 		}
 
+		private static List<TextMapPropagator> forTypes(PropagationType[] types, boolean baggage) {
+			return forTypes(Arrays.stream(types).toList(), baggage);
+		}
+
 	}
 
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/TracingProperties.java

@@ -17,8 +17,6 @@
 package org.springframework.boot.actuate.autoconfigure.tracing;
 
 import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Comparator;
 import java.util.List;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
@@ -180,42 +178,27 @@ public void setType(List<PropagationType> type) {
 			this.type = type;
 		}
 
+		/**
+		 * Supported propagation types. The declared order of the values matter.
+		 */
 		enum PropagationType {
 
+			/**
+			 * <a href="https://www.w3.org/TR/trace-context/">W3C propagation.</a>
+			 */
+			W3C,
+
 			/**
 			 * <a href="https://github.com/openzipkin/b3-propagation#single-header">B3
 			 * single header</a> propagation.
 			 */
-			B3(1),
+			B3,
 
 			/**
 			 * <a href="https://github.com/openzipkin/b3-propagation#multiple-headers">B3
 			 * multiple headers</a> propagation.
 			 */
-			B3_MULTI(2),
-
-			/**
-			 * W3C propagation.
-			 */
-			W3C(0);
-
-			/**
-			 * Order of the enum value. The {@link #orderedValues()} method returns the
-			 * enum values in ascending order.
-			 */
-			private final int order;
-
-			PropagationType(int order) {
-				this.order = order;
-			}
-
-			/**
-			 * Returns the ordered values.
-			 * @return the ordered values
-			 */
-			static List<PropagationType> orderedValues() {
-				return Arrays.stream(values()).sorted(Comparator.comparing((value) -> value.order)).toList();
-			}
+			B3_MULTI;
 
 		}