Removes all deprecated types and modules for Brave v6 (#1395)

This removes all deprecated types and modules for Brave v6. This also removes any internal symbols not used as a result of that.

This is the first release to have no Zipkin dependency, so users should move to manage their own zipkin-reporter deps before or at the time of upgrading to Brave 6.0.

Signed-off-by: Adrian Cole <adrian@tetrate.io>

brave-bom/pom.xml

@@ -32,10 +32,6 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
     <main.basedir>${project.basedir}/..</main.basedir>
-
-    <!-- use the same values in ../pom.xml -->
-    <zipkin.version>2.27.0</zipkin.version>
-    <zipkin-reporter.version>3.0.0</zipkin-reporter.version>
   </properties>
 
   <organization>
@@ -85,18 +81,6 @@
 
   <dependencyManagement>
     <dependencies>
-      <dependency>
-        <groupId>io.zipkin.reporter2</groupId>
-        <artifactId>zipkin-reporter-bom</artifactId>
-        <version>${zipkin-reporter.version}</version>
-        <type>pom</type>
-        <scope>import</scope>
-      </dependency>
-      <dependency>
-        <groupId>io.zipkin.zipkin2</groupId>
-        <artifactId>zipkin</artifactId>
-        <version>${zipkin.version}</version>
-      </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>brave</artifactId>
@@ -127,11 +111,6 @@
         <artifactId>brave-context-slf4j</artifactId>
         <version>${project.version}</version>
       </dependency>
-      <dependency>
-        <groupId>${project.groupId}</groupId>
-        <artifactId>brave-context-rxjava2</artifactId>
-        <version>${project.version}</version>
-      </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>brave-instrumentation-benchmarks</artifactId>
@@ -142,11 +121,6 @@
         <artifactId>brave-instrumentation-dubbo</artifactId>
         <version>${project.version}</version>
       </dependency>
-      <dependency>
-        <groupId>${project.groupId}</groupId>
-        <artifactId>brave-instrumentation-dubbo-rpc</artifactId>
-        <version>${project.version}</version>
-      </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>brave-instrumentation-grpc</artifactId>
@@ -252,11 +226,6 @@
         <artifactId>brave-instrumentation-okhttp3</artifactId>
         <version>${project.version}</version>
       </dependency>
-      <dependency>
-        <groupId>${project.groupId}</groupId>
-        <artifactId>brave-instrumentation-p6spy</artifactId>
-        <version>${project.version}</version>
-      </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>brave-instrumentation-rpc</artifactId>
@@ -272,11 +241,6 @@
         <artifactId>brave-instrumentation-servlet-jakarta</artifactId>
         <version>${project.version}</version>
       </dependency>
-      <dependency>
-        <groupId>${project.groupId}</groupId>
-        <artifactId>brave-instrumentation-sparkjava</artifactId>
-        <version>${project.version}</version>
-      </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>brave-instrumentation-spring-rabbit</artifactId>

brave-tests/src/main/java/brave/test/propagation/CurrentTraceContextTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 The OpenZipkin Authors
+ * Copyright 2013-2024 The OpenZipkin Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
@@ -311,7 +311,7 @@ protected void is_inheritable(CurrentTraceContext inheritableCurrentTraceContext
   }
 
   @Test void restoresSpanAfterCallable() throws Exception {
-    try (Scope scope0 = currentTraceContext.newScope(context)) {
+    try (Scope scope = currentTraceContext.newScope(context)) {
       attachesSpanInCallable();
       assertThat(currentTraceContext.get())
         .isEqualTo(context);
@@ -341,7 +341,7 @@ protected void is_inheritable(CurrentTraceContext inheritableCurrentTraceContext
   @Test void restoresSpanAfterRunnable() throws Exception {
     TraceContext context0 = TraceContext.newBuilder().traceId(3L).spanId(3L).build();
 
-    try (Scope scope0 = currentTraceContext.newScope(context0)) {
+    try (Scope scope = currentTraceContext.newScope(context0)) {
       attachesSpanInRunnable();
       assertThat(currentTraceContext.get())
         .isEqualTo(context0);
@@ -366,7 +366,7 @@ static class Unused extends ClassLoaders.ConsumerRunnable<CurrentTraceContext.Bu
   static class ClosedScope extends ClassLoaders.ConsumerRunnable<CurrentTraceContext.Builder> {
     @Override public void accept(CurrentTraceContext.Builder builder) {
       CurrentTraceContext current = builder.build();
-      try (Scope ws = current.newScope(TraceContext.newBuilder().traceId(1L).spanId(2L).build())) {
+      try (Scope scope = current.newScope(TraceContext.newBuilder().traceId(1L).spanId(2L).build())) {
       }
     }
   }

brave-tests/src/main/java/brave/test/propagation/PropagationSetterTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 The OpenZipkin Authors
+ * Copyright 2013-2024 The OpenZipkin Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at

brave-tests/src/main/java/brave/test/propagation/PropagationTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 The OpenZipkin Authors
+ * Copyright 2013-2024 The OpenZipkin Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
@@ -13,8 +13,8 @@
  */
 package brave.test.propagation;
 
-import brave.internal.codec.HexCodec;
 import brave.internal.Nullable;
+import brave.internal.codec.HexCodec;
 import brave.propagation.Propagation;
 import brave.propagation.Propagation.Getter;
 import brave.propagation.Propagation.Setter;

brave-tests/src/main/java/brave/test/util/AssertableCallback.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 The OpenZipkin Authors
+ * Copyright 2013-2024 The OpenZipkin Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
@@ -18,8 +18,6 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.BiConsumer;
-import org.assertj.core.api.AbstractThrowableAssert;
-import org.assertj.core.api.ObjectAssert;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -104,31 +102,6 @@ public void onError(Throwable throwable) {
     throw new AssertionError("unexpected state");
   }
 
-  // TODO: not actually used as we don't need to verify http status code or otherwise yet
-  public ObjectAssert<V> assertThatSuccess() {
-    return assertThat(join());
-  }
-
-  // TODO: not actually used as we have no async error tests, yet
-  public AbstractThrowableAssert<?, ? extends Throwable> assertThatError() {
-    awaitUninterruptably();
-
-    if (onErrorCount.get() > 0) {
-      assertThat(onErrorCount)
-        .withFailMessage("onError signaled multiple times")
-        .hasValueLessThan(2);
-
-      assertThat(onSuccessCount)
-        .withFailMessage("Both onSuccess and onError were signaled")
-        .hasValue(0);
-
-      return assertThat(result == NULL_SENTINEL ? null : (Throwable) result);
-    } else if (onSuccessCount.get() > 0) {
-      throw new AssertionError("expected onError, but received onSuccess(" + result + ")");
-    }
-    throw new AssertionError(); // unexpected as we only have two callbacks to handle!
-  }
-
   void awaitUninterruptably() {
     try {
       await(3, TimeUnit.SECONDS);

brave-tests/src/test/java/brave/propagation/B3PropagationTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 The OpenZipkin Authors
+ * Copyright 2013-2024 The OpenZipkin Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at

brave/README.md

@@ -87,7 +87,7 @@ When you need more features, or finer control, use the `Span` type:
 // Start a new trace or a span within an existing trace representing an operation
 Span span = tracer.nextSpan().name("encode").start();
 // Put the span in "scope" so that downstream code such as loggers can see trace IDs
-try (SpanInScope ws = tracer.withSpanInScope(span)) {
+try (SpanInScope scope = tracer.withSpanInScope(span)) {
   return encoder.encode();
 } catch (RuntimeException | Error e) {
   span.error(e); // Unless you handle exceptions, you might not know the operation failed!
@@ -192,7 +192,7 @@ tracing.propagation().injector(ClientRequestWrapper::addHeader)
 span.kind(request.spanKind());
 span.name("Report");
 span.start();
-try (Scope ws = currentTraceContext.newScope(span.context())) { // 2.
+try (Scope scope = currentTraceContext.newScope(span.context())) { // 2.
   return invoke(request); // 3.
 } catch (Throwable e) {
   span.error(error); // 4.
@@ -721,7 +721,7 @@ external code might be invoked (such as proceeding an interceptor or
 otherwise), place the span in scope like this.
 
 ```java
-try (SpanInScope ws = tracer.withSpanInScope(span)) {
+try (SpanInScope scope = tracer.withSpanInScope(span)) {
   return inboundRequest.invoke();
 } catch (RuntimeException | Error e) {
   span.error(e);

brave/pom.xml

@@ -37,19 +37,6 @@
   </properties>
 
   <dependencies>
-    <!-- Intentionally pinned so that we can move off Tracing.Builder.spanReporter
-         Once zipkin-reporter-brave is out a while, we can un-pin it. -->
-    <dependency>
-      <groupId>io.zipkin.reporter2</groupId>
-      <artifactId>zipkin-reporter-brave</artifactId>
-      <version>${zipkin-reporter.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>io.zipkin.zipkin2</groupId>
-      <artifactId>zipkin</artifactId>
-      <version>${zipkin.version}</version>
-    </dependency>
-
     <!-- To show off SpanHandler -->
     <dependency>
       <groupId>org.junit.jupiter</groupId>
@@ -111,12 +98,6 @@
       <version>${spring5.version}</version>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>io.zipkin.reporter2</groupId>
-      <artifactId>zipkin-sender-okhttp3</artifactId>
-      <version>${zipkin-reporter.version}</version>
-      <scope>test</scope>
-    </dependency>
   </dependencies>
   <build>
     <plugins>