rename vars, extend ApiTracer

Author: diegomarquezp

gax-java/gax-httpjson/src/test/java/com/google/api/gax/httpjson/testing/TestApiTracer.java

@@ -29,7 +29,7 @@
  */
 package com.google.api.gax.httpjson.testing;
 
-import com.google.api.gax.tracing.BaseApiTracer;
+import com.google.api.gax.tracing.ApiTracer;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import org.threeten.bp.Duration;
@@ -38,45 +38,41 @@
  * Test tracer that keeps count of different events. See {@link TestApiTracerFactory} for more
  * details.
  */
-public class TestApiTracer extends BaseApiTracer {
+public class TestApiTracer implements ApiTracer {
 
-  private final AtomicInteger tracerAttempts;
-  private final AtomicInteger tracerAttemptsFailed;
-  private final AtomicBoolean tracerOperationFailed;
-  private final AtomicBoolean tracerFailedRetriesExhausted;
+  private final AtomicInteger attemptsStarted;
+  private final AtomicInteger attemptsFailed;
+  private final AtomicBoolean operationFailed;
+  private final AtomicBoolean retriesExhausted;
 
   public TestApiTracer(
       AtomicInteger tracerAttempts,
       AtomicInteger tracerAttemptsFailed,
       AtomicBoolean tracerOperationFailed,
       AtomicBoolean tracerFailedRetriesExhausted) {
-    this.tracerAttempts = tracerAttempts;
-    this.tracerAttemptsFailed = tracerAttemptsFailed;
-    this.tracerOperationFailed = tracerOperationFailed;
-    this.tracerFailedRetriesExhausted = tracerFailedRetriesExhausted;
+    this.attemptsStarted = tracerAttempts;
+    this.attemptsFailed = tracerAttemptsFailed;
+    this.operationFailed = tracerOperationFailed;
+    this.retriesExhausted = tracerFailedRetriesExhausted;
   }
 
   @Override
   public void attemptFailed(Throwable error, Duration delay) {
-    tracerAttemptsFailed.incrementAndGet();
-    super.attemptFailed(error, delay);
+    attemptsFailed.incrementAndGet();
   }
 
   @Override
   public void attemptStarted(int attemptNumber) {
-    tracerAttempts.incrementAndGet();
-    super.attemptStarted(attemptNumber);
+    attemptsStarted.incrementAndGet();
   }
 
   @Override
   public void operationFailed(Throwable error) {
-    tracerOperationFailed.set(true);
-    super.operationFailed(error);
+    operationFailed.set(true);
   }
 
   @Override
   public void attemptFailedRetriesExhausted(Throwable error) {
-    tracerFailedRetriesExhausted.set(true);
-    super.attemptFailedRetriesExhausted(error);
+    retriesExhausted.set(true);
   }
 };