Tracing: added OpenTelemetry integration test

The test verifies that span tree structure and status code are valid.
Speculative executions are run parallel to the main thread, so some
of them can finish only after query result has been returned.
Thus, in order to collect span data from entire request, we decided
to wait until all speculative executions end. The main thread uses
conditional variable `allEnded` to wait for them and lock is used
for concurrent mutation of activeSpans.

driver-opentelemetry/src/main/java/com/datastax/driver/opentelemetry/OpenTelemetryTracingInfo.java

@@ -20,8 +20,8 @@
 import com.datastax.driver.core.policies.LoadBalancingPolicy;
 import com.datastax.driver.core.policies.RetryPolicy;
 import com.datastax.driver.core.policies.SpeculativeExecutionPolicy;
-import com.datastax.driver.core.tracing.PrecisionLevel;
 import com.datastax.driver.core.tracing.TracingInfo;
+import com.datastax.driver.core.tracing.VerbosityLevel;
 import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
@@ -32,9 +32,9 @@ public class OpenTelemetryTracingInfo implements TracingInfo {
   private final Tracer tracer;
   private final Context context;
   private boolean tracingStarted;
-  private final PrecisionLevel precision;
+  private final VerbosityLevel precision;
 
-  protected OpenTelemetryTracingInfo(Tracer tracer, Context context, PrecisionLevel precision) {
+  protected OpenTelemetryTracingInfo(Tracer tracer, Context context, VerbosityLevel precision) {
     this.tracer = tracer;
     this.context = context;
     this.precision = precision;
@@ -53,7 +53,7 @@ private void assertStarted() {
     assert tracingStarted : "TracingInfo.setStartTime must be called before any other method";
   }
 
-  public PrecisionLevel getPrecision() {
+  public VerbosityLevel getVerbosity() {
     return precision;
   }
 
@@ -72,14 +72,14 @@ public void setConsistencyLevel(ConsistencyLevel consistency) {
 
   public void setStatement(String statement) {
     assertStarted();
-    if (currentPrecisionLevelIsAtLeast(PrecisionLevel.FULL)) {
+    if (currentVerbosityLevelIsAtLeast(VerbosityLevel.FULL)) {
       span.setAttribute("db.scylladb.statement", statement);
     }
   }
 
   public void setHostname(String hostname) {
     assertStarted();
-    if (currentPrecisionLevelIsAtLeast(PrecisionLevel.FULL)) {
+    if (currentVerbosityLevelIsAtLeast(VerbosityLevel.FULL)) {
       span.setAttribute("net.peer.name", hostname);
     }
   }
@@ -168,7 +168,7 @@ public void setRowsCount(int rowsCount) {
   @Override
   public void setStatement(String statement, int limit) {
     assertStarted();
-    if (currentPrecisionLevelIsAtLeast(PrecisionLevel.FULL)) {
+    if (currentVerbosityLevelIsAtLeast(VerbosityLevel.FULL)) {
       if (statement.length() > limit) statement = statement.substring(0, limit);
       span.setAttribute("db.scylladb.statement", statement);
     }
@@ -244,7 +244,7 @@ public void tracingFinished() {
     span.end();
   }
 
-  private boolean currentPrecisionLevelIsAtLeast(PrecisionLevel requiredLevel) {
+  private boolean currentVerbosityLevelIsAtLeast(VerbosityLevel requiredLevel) {
     return requiredLevel.compareTo(precision) <= 0;
   }
 }

driver-opentelemetry/src/main/java/com/datastax/driver/opentelemetry/OpenTelemetryTracingInfoFactory.java

@@ -17,22 +17,22 @@
 package com.datastax.driver.opentelemetry;
 
 import com.datastax.driver.core.tracing.NoopTracingInfoFactory;
-import com.datastax.driver.core.tracing.PrecisionLevel;
 import com.datastax.driver.core.tracing.TracingInfo;
 import com.datastax.driver.core.tracing.TracingInfoFactory;
+import com.datastax.driver.core.tracing.VerbosityLevel;
 import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
 
 public class OpenTelemetryTracingInfoFactory implements TracingInfoFactory {
   private final Tracer tracer;
-  private final PrecisionLevel precision;
+  private final VerbosityLevel precision;
 
   public OpenTelemetryTracingInfoFactory(final Tracer tracer) {
-    this(tracer, PrecisionLevel.NORMAL);
+    this(tracer, VerbosityLevel.NORMAL);
   }
 
-  public OpenTelemetryTracingInfoFactory(final Tracer tracer, final PrecisionLevel precision) {
+  public OpenTelemetryTracingInfoFactory(final Tracer tracer, final VerbosityLevel precision) {
     this.tracer = tracer;
     this.precision = precision;
   }
@@ -48,7 +48,7 @@ public TracingInfo buildTracingInfo(TracingInfo parent) {
     if (parent instanceof OpenTelemetryTracingInfo) {
       final OpenTelemetryTracingInfo castedParent = (OpenTelemetryTracingInfo) parent;
       return new OpenTelemetryTracingInfo(
-          castedParent.getTracer(), castedParent.getContext(), castedParent.getPrecision());
+          castedParent.getTracer(), castedParent.getContext(), castedParent.getVerbosity());
     }
 
     return new NoopTracingInfoFactory().buildTracingInfo();