Allow disabling the Dynatrace instruments

Since Micrometer version 1.9.0, the Dynatrace registry uses specialized
instruments by default, which ensures data is exported in an optimal
format. By using this new flag, users can switch back to the previous
behavior, which uses the original instruments from Micrometer.

See gh-30637

Author: pirgeo

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/dynatrace/DynatraceProperties.java

@@ -168,6 +168,14 @@ public static class V2 {
 		 */
 		private String metricKeyPrefix;
 
+		/**
+		 * Since version 1.9.0 of Micrometer, the Dynatrace registry uses specialized
+		 * instruments to make sure data is exported in an optimal format. This behavior
+		 * is the new default. This toggle allows switching back to the original
+		 * implementation.
+		 */
+		private boolean useDynatraceSummaryInstruments = true;
+
 		public Map<String, String> getDefaultDimensions() {
 			return this.defaultDimensions;
 		}
@@ -192,6 +200,14 @@ public void setMetricKeyPrefix(String metricKeyPrefix) {
 			this.metricKeyPrefix = metricKeyPrefix;
 		}
 
+		public boolean isUseDynatraceSummaryInstruments() {
+			return this.useDynatraceSummaryInstruments;
+		}
+
+		public void setUseDynatraceSummaryInstruments(boolean useDynatraceSummaryInstruments) {
+			this.useDynatraceSummaryInstruments = useDynatraceSummaryInstruments;
+		}
+
 	}
 
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/dynatrace/DynatracePropertiesConfigAdapter.java

@@ -90,6 +90,11 @@ public boolean enrichWithDynatraceMetadata() {
 		return get(v2(V2::isEnrichWithDynatraceMetadata), DynatraceConfig.super::enrichWithDynatraceMetadata);
 	}
 
+	@Override
+	public boolean useDynatraceSummaryInstruments() {
+		return get(v2(V2::isUseDynatraceSummaryInstruments), DynatraceConfig.super::useDynatraceSummaryInstruments);
+	}
+
 	private <V> Function<DynatraceProperties, V> v1(Function<V1, V> getter) {
 		return (properties) -> getter.apply(properties.getV1());
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/dynatrace/DynatracePropertiesConfigAdapterTests.java

@@ -125,6 +125,13 @@ void whenPropertiesEnrichWithOneAgentMetadataIsSetAdapterEnrichWithOneAgentMetad
 		assertThat(new DynatracePropertiesConfigAdapter(properties).enrichWithDynatraceMetadata()).isTrue();
 	}
 
+	@Test
+	void whenPropertiesUseDynatraceInstrumentsIsSetAdapterUseDynatraceInstrumentsReturnsIt() {
+		DynatraceProperties properties = new DynatraceProperties();
+		properties.getV2().setUseDynatraceSummaryInstruments(false);
+		assertThat(new DynatracePropertiesConfigAdapter(properties).useDynatraceSummaryInstruments()).isFalse();
+	}
+
 	@Test
 	void whenPropertiesDefaultDimensionsIsSetAdapterDefaultDimensionsReturnsIt() {
 		DynatraceProperties properties = new DynatraceProperties();
@@ -148,6 +155,7 @@ void defaultValues() {
 		assertThat(properties.getV2().getMetricKeyPrefix()).isNull();
 		assertThat(properties.getV2().isEnrichWithDynatraceMetadata()).isTrue();
 		assertThat(properties.getV2().getDefaultDimensions()).isNull();
+		assertThat(properties.getV2().isUseDynatraceSummaryInstruments()).isTrue();
 		assertThat(properties.getDeviceId()).isNull();
 		assertThat(properties.getTechnologyType()).isEqualTo("java");
 		assertThat(properties.getGroup()).isNull();