Debug print statements

Author: sarahchen6

dd-java-agent/agent-bootstrap/src/main/java/datadog/trace/bootstrap/instrumentation/decorator/HttpClientDecorator.java

@@ -82,10 +82,14 @@ public AgentSpan onRequest(final AgentSpan span, final REQUEST request) {
       String method = method(request);
       span.setTag(Tags.HTTP_METHOD, method);
 
+      System.out.println("In onRequest method in HttpClientDecorator");
       if (CLIENT_TAG_HEADERS) {
+        System.out.println("Tagging client headers...");
         for (Map.Entry<String, String> headerTag :
             traceConfig(span).getRequestHeaderTags().entrySet()) {
           String headerValue = getRequestHeader(request, headerTag.getKey());
+          System.out.println("headerTag: " + headerTag.getValue());
+          System.out.println("headerValue: " + headerValue);
           if (null != headerValue) {
             span.setTag(headerTag.getValue(), headerValue);
           }

dd-java-agent/instrumentation/apache-httpclient-5/src/main/java/datadog/trace/instrumentation/apachehttpclient5/ApacheHttpClientDecorator.java

@@ -5,6 +5,7 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import org.apache.hc.core5.http.Header;
 import org.apache.hc.core5.http.HttpRequest;
@@ -51,14 +52,18 @@ protected int status(final HttpResponse httpResponse) {
 
   @Override
   protected String getRequestHeader(HttpRequest request, String headerName) {
+    System.out.println("headerName: " + headerName);
+    System.out.println("headers: " + Arrays.toString(request.getHeaders(headerName)));
     Header[] headers = request.getHeaders(headerName);
     List<String> values = new ArrayList<>();
     if (headers.length > 0) {
       for (Header header : headers) {
         values.add(header.getValue());
       }
+      System.out.println("returning " + String.join(",", values));
       return String.join(",", values);
     }
+    System.out.println("returning null");
     return null;
   }
 

dd-java-agent/testing/src/main/groovy/datadog/trace/agent/test/base/HttpClientTest.groovy

@@ -767,6 +767,7 @@ abstract class HttpClientTest extends VersionedNamingTestBase {
   def "test request header #header tag mapping"() {
     when:
     def url = server.address.resolve("/success")
+    System.out.println("testing header, value, value2: " + header + ", " + value + ", " + value2)
     String[] headerVals = [header + ":" + value , header + ":" + value2]
     def status = (value2 == null) ? doRequest(method, url, [(header): value]) : doRequest(method, url, headerVals)
     if (isDataStreamsEnabled()) {