Convert Jetty 11 groovy to java (#7976)

related to
#7195

instrumentation/jetty/jetty-11.0/javaagent/src/test/Java/io/opentelemetry/javaagent/instrumentation/jetty/v11_0/JettyHandlerTest.java

@@ -0,0 +1,175 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.javaagent.instrumentation.jetty.v11_0;
+
+import static io.opentelemetry.instrumentation.testing.junit.http.HttpServerTestOptions.DEFAULT_HTTP_ATTRIBUTES;
+import static io.opentelemetry.instrumentation.testing.junit.http.ServerEndpoint.ERROR;
+import static io.opentelemetry.instrumentation.testing.junit.http.ServerEndpoint.EXCEPTION;
+import static io.opentelemetry.instrumentation.testing.junit.http.ServerEndpoint.INDEXED_CHILD;
+import static io.opentelemetry.instrumentation.testing.junit.http.ServerEndpoint.NOT_FOUND;
+import static io.opentelemetry.instrumentation.testing.junit.http.ServerEndpoint.REDIRECT;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.google.common.collect.Sets;
+import io.opentelemetry.api.common.Attributes;
+import io.opentelemetry.api.trace.SpanKind;
+import io.opentelemetry.instrumentation.testing.junit.InstrumentationExtension;
+import io.opentelemetry.instrumentation.testing.junit.http.AbstractHttpServerTest;
+import io.opentelemetry.instrumentation.testing.junit.http.HttpServerInstrumentationExtension;
+import io.opentelemetry.instrumentation.testing.junit.http.HttpServerTestOptions;
+import io.opentelemetry.instrumentation.testing.junit.http.ServerEndpoint;
+import io.opentelemetry.sdk.testing.assertj.SpanDataAssert;
+import io.opentelemetry.semconv.trace.attributes.SemanticAttributes;
+import jakarta.servlet.DispatcherType;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.Writer;
+import java.util.Collections;
+import org.eclipse.jetty.server.Request;
+import org.eclipse.jetty.server.Response;
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.AbstractHandler;
+import org.eclipse.jetty.server.handler.ErrorHandler;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public class JettyHandlerTest extends AbstractHttpServerTest<Server> {
+
+  @RegisterExtension
+  static final InstrumentationExtension testing = HttpServerInstrumentationExtension.forAgent();
+
+  private static final ErrorHandler errorHandler =
+      new ErrorHandler() {
+        @Override
+        protected void handleErrorPage(
+            HttpServletRequest request, Writer writer, int code, String message)
+            throws IOException {
+          Throwable th = (Throwable) request.getAttribute("jakarta.servlet.error.exception");
+          String errorMsg = th != null ? th.getMessage() : message;
+          if (errorMsg != null) {
+            writer.write(errorMsg);
+          }
+        }
+      };
+
+  private static final TestHandler testHandler = new TestHandler();
+
+  @Override
+  protected Server setupServer() {
+    Server server = new Server(port);
+    server.setHandler(testHandler);
+    server.addBean(errorHandler);
+    try {
+      server.start();
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+    return server;
+  }
+
+  @Override
+  protected void stopServer(Server server) {
+    try {
+      server.stop();
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  @Override
+  protected void configure(HttpServerTestOptions options) {
+    options.setHttpAttributes(
+        unused ->
+            Sets.difference(
+                DEFAULT_HTTP_ATTRIBUTES, Collections.singleton(SemanticAttributes.HTTP_ROUTE)));
+    options.setHasResponseSpan(endpoint -> endpoint == REDIRECT || endpoint == ERROR);
+    options.setExpectedException(new IllegalStateException(EXCEPTION.getBody()));
+  }
+
+  @Override
+  protected SpanDataAssert assertResponseSpan(
+      SpanDataAssert span, String method, ServerEndpoint endpoint) {
+    if (endpoint == REDIRECT) {
+      span.satisfies(spanData -> assertThat(spanData.getName()).endsWith(".sendRedirect"));
+    } else if (endpoint == ERROR) {
+      span.satisfies(spanData -> assertThat(spanData.getName()).endsWith(".sendError"));
+    }
+    span.hasKind(SpanKind.INTERNAL).hasAttributesSatisfying(Attributes::isEmpty);
+    return span;
+  }
+
+  private static void handleRequest(Request request, HttpServletResponse response) {
+    ServerEndpoint endpoint = ServerEndpoint.forPath(request.getRequestURI());
+    controller(
+        endpoint,
+        () -> {
+          try {
+            return response(request, response, endpoint);
+          } catch (IOException e) {
+            throw new RuntimeException(e);
+          }
+        });
+  }
+
+  private static HttpServletResponse response(
+      Request request, HttpServletResponse response, ServerEndpoint endpoint) throws IOException {
+    response.setContentType("text/plain");
+    switch (endpoint) {
+      case SUCCESS:
+        response.setStatus(endpoint.getStatus());
+        response.getWriter().print(endpoint.getBody());
+        break;
+      case QUERY_PARAM:
+        response.setStatus(endpoint.getStatus());
+        response.getWriter().print(request.getQueryString());
+        break;
+      case REDIRECT:
+        response.sendRedirect(endpoint.getBody());
+        break;
+      case ERROR:
+        response.sendError(endpoint.getStatus(), endpoint.getBody());
+        break;
+      case CAPTURE_HEADERS:
+        response.setHeader("X-Test-Response", request.getHeader("X-Test-Request"));
+        response.setStatus(endpoint.getStatus());
+        response.getWriter().print(endpoint.getBody());
+        break;
+      case EXCEPTION:
+        throw new IllegalStateException(endpoint.getBody());
+      case INDEXED_CHILD:
+        INDEXED_CHILD.collectSpanAttributes(name -> request.getParameter(name));
+        response.setStatus(endpoint.getStatus());
+        response.getWriter().print(endpoint.getBody());
+        break;
+      default:
+        response.setStatus(NOT_FOUND.getStatus());
+        response.getWriter().print(NOT_FOUND.getBody());
+        break;
+    }
+    return response;
+  }
+
+  private static class TestHandler extends AbstractHandler {
+    @Override
+    public void handle(
+        String target,
+        Request baseRequest,
+        HttpServletRequest request,
+        HttpServletResponse response)
+        throws IOException, ServletException {
+      // This line here is to verify that we don't break Jetty if it wants to cast to implementation
+      // class
+      Response jettyResponse = (Response) response;
+      if (baseRequest.getDispatcherType() != DispatcherType.ERROR) {
+        handleRequest(baseRequest, jettyResponse);
+        baseRequest.setHandled(true);
+      } else {
+        errorHandler.handle(target, baseRequest, baseRequest, response);
+      }
+    }
+  }
+}