Remove usages of sdk internal StringUtils class (#11547)

instrumentation/influxdb-2.4/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/influxdb/v2_4/InfluxDbAttributesGetter.java

@@ -5,7 +5,6 @@
 
 package io.opentelemetry.javaagent.instrumentation.influxdb.v2_4;
 
-import io.opentelemetry.api.internal.StringUtils;
 import io.opentelemetry.instrumentation.api.incubator.semconv.db.DbClientAttributesGetter;
 import javax.annotation.Nullable;
 
@@ -22,12 +21,11 @@ final class InfluxDbAttributesGetter implements DbClientAttributesGetter<InfluxD
   public String getOperation(InfluxDbRequest request) {
     if (request.getSqlStatementInfo() != null) {
       String operation = request.getSqlStatementInfo().getOperation();
-      return StringUtils.isNullOrEmpty(operation) ? request.getSql() : operation;
+      return operation == null ? request.getSql() : operation;
     }
     return null;
   }
 
-  @Nullable
   @Override
   public String getSystem(InfluxDbRequest request) {
     return "influxdb";
@@ -43,7 +41,7 @@ final class InfluxDbAttributesGetter implements DbClientAttributesGetter<InfluxD
   @Override
   public String getName(InfluxDbRequest request) {
     String dbName = request.getDbName();
-    return StringUtils.isNullOrEmpty(dbName) ? null : dbName;
+    return "".equals(dbName) ? null : dbName;
   }
 
   @Nullable

instrumentation/spring/spring-cloud-gateway/spring-cloud-gateway-2.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/spring/gateway/v2_0/ServerWebExchangeHelper.java

@@ -8,7 +8,6 @@ package io.opentelemetry.javaagent.instrumentation.spring.gateway.v2_0;
 import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR;
 
 import io.opentelemetry.api.common.AttributeKey;
-import io.opentelemetry.api.internal.StringUtils;
 import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.instrumentation.api.instrumenter.LocalRootSpan;
@@ -86,7 +85,7 @@ public final class ServerWebExchangeHelper {
    */
   private static String convergeRouteId(Route route) {
     String routeId = route.getId();
-    if (StringUtils.isNullOrEmpty(routeId)) {
+    if (routeId == null || routeId.isEmpty()) {
       return null;
     }
     if (UUID_REGEX.matcher(routeId).matches()) {

instrumentation/spring/spring-cloud-gateway/spring-cloud-gateway-common/testing/src/main/java/io/opentelemetry/instrumentation/spring/gateway/common/AbstractRouteMappingTest.java

@@ -8,7 +8,6 @@ package io.opentelemetry.instrumentation.spring.gateway.common;
 import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.equalTo;
 
 import io.opentelemetry.api.common.AttributeKey;
-import io.opentelemetry.api.internal.StringUtils;
 import io.opentelemetry.instrumentation.testing.junit.AgentInstrumentationExtension;
 import io.opentelemetry.instrumentation.testing.junit.InstrumentationExtension;
 import io.opentelemetry.sdk.testing.assertj.AttributeAssertion;
@@ -21,6 +20,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.test.context.TestConfiguration;
 import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
 import org.springframework.context.annotation.Bean;
+import org.springframework.util.StringUtils;
 
 public abstract class AbstractRouteMappingTest {
   @TestConfiguration
@@ -49,7 +49,7 @@ public abstract class AbstractRouteMappingTest {
   protected List<AttributeAssertion> buildAttributeAssertions(
       String routeId, String uri, int order, int filterSize) {
     List<AttributeAssertion> assertions = new ArrayList<>();
-    if (!StringUtils.isNullOrEmpty(routeId)) {
+    if (!StringUtils.isEmpty(routeId)) {
       assertions.add(equalTo(AttributeKey.stringKey("spring-cloud-gateway.route.id"), routeId));
     }
     assertions.add(equalTo(AttributeKey.stringKey("spring-cloud-gateway.route.uri"), uri));