Deprecate Wavefront Reporter and its test support

Closes gh-1148

Author: jonatan-ivanov

docs/modules/ROOT/pages/reporters.adoc

@@ -5,6 +5,8 @@ Micrometer Tracing supports directly the following Reporters.
 * https://tanzu.vmware.com/observability[*Tanzu Observability by Wavefront*]
 * https://zipkin.io[*OpenZipkin Zipkin*]
 
+CAUTION: The Wavefront Reporter has been deprecated because https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/release-announcements/0/25153[Wavefront's End of Life Announcement].
+
 == Installing
 
 The following example shows the required dependency in Gradle (assuming that Micrometer Tracing BOM has been added):

docs/modules/ROOT/pages/testing.adoc

@@ -15,6 +15,8 @@ It:
 ** Sets it up with OpenZipkin Zipkin Exporter
 * Runs all the combinations above against the user code and running infrastructure
 
+CAUTION: The Wavefront Reporter and its test support have been deprecated because https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/release-announcements/0/25153[Wavefront's End of Life Announcement].
+
 == Installing
 
 The following example shows the required dependency in Gradle (assuming that Micrometer Tracing BOM has been added):

micrometer-tracing-reporters/micrometer-tracing-reporter-wavefront/build.gradle

@@ -2,6 +2,8 @@ plugins {
 	id 'idea'
 }
 
+description = 'Reporter implementation for Wavefront. This module is deprecated because Wavefront\'s End of Life Announcement.'
+
 dependencies {
 	api project(':micrometer-tracing')
 	api platform(libs.micrometerBom)

micrometer-tracing-reporters/micrometer-tracing-reporter-wavefront/src/main/java/io/micrometer/tracing/reporter/wavefront/SpanMetrics.java

@@ -20,9 +20,11 @@
 /**
  * Reports metrics from {@link WavefrontSpanHandler}.
  *
+ * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
  * @author Moritz Halbritter
  * @since 1.0.0
  */
+@Deprecated
 public interface SpanMetrics {
 
     /**

micrometer-tracing-reporters/micrometer-tracing-reporter-wavefront/src/main/java/io/micrometer/tracing/reporter/wavefront/WavefrontBraveSpanHandler.java

@@ -15,20 +15,22 @@
  */
 package io.micrometer.tracing.reporter.wavefront;
 
-import java.io.Closeable;
-
 import brave.handler.MutableSpan;
 import brave.handler.SpanHandler;
 import brave.propagation.TraceContext;
 import io.micrometer.tracing.brave.bridge.BraveFinishedSpan;
 import io.micrometer.tracing.brave.bridge.BraveTraceContext;
 
+import java.io.Closeable;
+
 /**
  * A {@link SpanHandler} that sends spans to Wavefront.
  *
+ * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
  * @author Marcin Grzejszczak
  * @since 1.0.0
  */
+@Deprecated
 public class WavefrontBraveSpanHandler extends SpanHandler implements Runnable, Closeable {
 
     private final WavefrontSpanHandler spanHandler;

micrometer-tracing-reporters/micrometer-tracing-reporter-wavefront/src/main/java/io/micrometer/tracing/reporter/wavefront/WavefrontOtelSpanExporter.java

@@ -26,9 +26,11 @@
 /**
  * A {@link SpanExporter} that sends spans to Wavefront.
  *
+ * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
  * @author Marcin Grzejszczak
  * @since 1.0.0
  */
+@Deprecated
 public class WavefrontOtelSpanExporter implements SpanExporter {
 
     private final WavefrontSpanHandler spanHandler;

micrometer-tracing-reporters/micrometer-tracing-reporter-wavefront/src/main/java/io/micrometer/tracing/reporter/wavefront/WavefrontSpanHandler.java

@@ -65,8 +65,10 @@
  * don't call {@link UUID#timestamp()} on UUIDs converted here, or in other Wavefront
  * code, as it might throw an exception.
  *
+ * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
  * @since 1.0.0
  */
+@Deprecated
 public class WavefrontSpanHandler implements Runnable, Closeable {
 
     private static final InternalLogger LOG = InternalLoggerFactory.getInstance(WavefrontSpanHandler.class);

micrometer-tracing-reporters/micrometer-tracing-reporter-wavefront/src/main/java/io/micrometer/tracing/reporter/wavefront/package-info.java

@@ -14,7 +14,11 @@
  * limitations under the License.
  */
 
+/**
+ * Deprecated since 1.6.0 because Wavefront's End of Life Announcement.
+ */
 @NullMarked
+@Deprecated
 package io.micrometer.tracing.reporter.wavefront;
 
 import org.jspecify.annotations.NullMarked;

micrometer-tracing-tests/micrometer-tracing-integration-test/src/main/java/io/micrometer/tracing/test/SampleTestRunner.java

@@ -345,7 +345,9 @@ void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
 
         /**
          * Wavefront Exporter with OTel Tracer.
+         * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
          */
+        @Deprecated
         WAVEFRONT_OTEL {
             @Override
             void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
@@ -380,7 +382,9 @@ void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
 
         /**
          * Wavefront Exporter with Brave Tracer.
+         * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
          */
+        @Deprecated
         WAVEFRONT_BRAVE {
             @Override
             void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
@@ -529,19 +533,23 @@ public static class Builder {
 
             /**
              * Token required to connect to Tanzu Observability by Wavefront.
+             * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
              * @param wavefrontToken wavefront token
              * @return this
              */
+            @Deprecated
             public Builder wavefrontToken(String wavefrontToken) {
                 this.wavefrontToken = wavefrontToken;
                 return this;
             }
 
             /**
              * URL of your Tanzu Observability by Wavefront installation.
+             * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
              * @param wavefrontUrl wavefront URL.
              * @return this
              */
+            @Deprecated
             public Builder wavefrontUrl(String wavefrontUrl) {
                 this.wavefrontUrl = wavefrontUrl;
                 return this;
@@ -559,29 +567,35 @@ public Builder zipkinUrl(String zipkinUrl) {
 
             /**
              * Name of the application grouping in Tanzu Observability by Wavefront.
+             * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
              * @param wavefrontApplicationName wavefront application name
              * @return this
              */
+            @Deprecated
             public Builder wavefrontApplicationName(String wavefrontApplicationName) {
                 this.wavefrontApplicationName = wavefrontApplicationName;
                 return this;
             }
 
             /**
              * Name of this service in Tanzu Observability by Wavefront.
+             * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
              * @param wavefrontServiceName wavefront service name
              * @return this
              */
+            @Deprecated
             public Builder wavefrontServiceName(String wavefrontServiceName) {
                 this.wavefrontServiceName = wavefrontServiceName;
                 return this;
             }
 
             /**
              * Name of the source to be presented in Tanzu Observability by Wavefront.
+             * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
              * @param wavefrontSource wavefront source
              * @return this
              */
+            @Deprecated
             public Builder wavefrontSource(String wavefrontSource) {
                 this.wavefrontSource = wavefrontSource;
                 return this;

micrometer-tracing-tests/micrometer-tracing-integration-test/src/main/java/io/micrometer/tracing/test/reporter/wavefront/WavefrontBraveSetup.java

@@ -47,9 +47,11 @@
 /**
  * Provides Wavefront setup with Brave.
  *
+ * @deprecated since 1.6.0 because Wavefront's End of Life Announcement
  * @author Marcin Grzejszczak
  * @since 1.0.0
  */
+@Deprecated
 public final class WavefrontBraveSetup implements AutoCloseable {
 
     // To be used in tests ONLY