Review fixes for r2dbc-1.0:javaagent

Automated code review of instrumentation/r2dbc-1.0/javaagent.

Author: otelbot[bot]

instrumentation/r2dbc-1.0/javaagent/build.gradle.kts

@@ -7,7 +7,8 @@ muzzle {
   pass {
     group.set("io.r2dbc")
     module.set("r2dbc-spi")
-    versions.set("[1.0.0.RELEASE,)")
+    versions.set("[0.9.0.RELEASE,)")
+    assertInverse.set(true)
     extraDependency("io.projectreactor:reactor-core:3.4.12")
   }
 }

instrumentation/r2dbc-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/r2dbc/v1_0/R2dbcInstrumentation.java

@@ -5,6 +5,7 @@
 
 package io.opentelemetry.javaagent.instrumentation.r2dbc.v1_0;
 
+import static io.opentelemetry.javaagent.instrumentation.r2dbc.v1_0.R2dbcSingletons.telemetry;
 import static net.bytebuddy.matcher.ElementMatchers.named;
 import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
@@ -48,7 +49,7 @@ public static ConnectionFactory methodExit(
         return null;
       }
 
-      return R2dbcSingletons.telemetry().wrapConnectionFactory(factory, factoryOptions);
+      return telemetry().wrapConnectionFactory(factory, factoryOptions);
     }
   }
 }

instrumentation/r2dbc-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/r2dbc/v1_0/R2dbcSingletons.java

@@ -16,7 +16,7 @@
 
 public class R2dbcSingletons {
 
-  private static final R2dbcTelemetry TELEMETRY;
+  private static final R2dbcTelemetry telemetry;
 
   static {
     R2dbcTelemetryBuilder builder =
@@ -32,11 +32,11 @@ public class R2dbcSingletons {
         builder,
         sqlCommenterBuilder ->
             SqlCommenterCustomizerHolder.getCustomizer().customize(sqlCommenterBuilder));
-    TELEMETRY = builder.build();
+    telemetry = builder.build();
   }
 
   public static R2dbcTelemetry telemetry() {
-    return TELEMETRY;
+    return telemetry;
   }
 
   private R2dbcSingletons() {}