Copy JDK 11 Jetty classes to JDK 8 target

connectors/jetty-connector/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!--
 
-    Copyright (c) 2011, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2011, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0, which is available at
@@ -121,20 +121,26 @@
     </build>
 
     <profiles>
-        <profile>
-            <id>testsSkipJdk6</id>
-            <activation>
-                <jdk>1.6</jdk>
-            </activation>
-            <properties>
-                <skip.tests>true</skip.tests>
-            </properties>
-        </profile>
         <profile>
             <id>JettyExclude</id>
             <activation>
                 <jdk>1.8</jdk>
             </activation>
+            <properties>
+                <jetty.version>9.4.28.v20200408</jetty.version>
+            </properties>
+            <dependencies>
+                <dependency>
+                    <groupId>org.eclipse.jetty</groupId>
+                    <artifactId>jetty-client</artifactId>
+                    <version>${jetty.version}</version>
+                </dependency>
+                <dependency>
+                    <groupId>org.eclipse.jetty</groupId>
+                    <artifactId>jetty-util</artifactId>
+                    <version>${jetty.version}</version>
+                </dependency>
+            </dependencies>
             <build>
                 <directory>${java8.build.outputDirectory}</directory>
                 <plugins>

connectors/jetty-connector/src/main/java8/org/glassfish/jersey/jetty/connector/JettyHttpClientContract.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package org.glassfish.jersey.jetty.connector;
+
+import org.eclipse.jetty.client.HttpClient;
+import org.glassfish.jersey.spi.Contract;
+
+/**
+ * A contract that allows for an optional registration of user predefined Jetty {@code HttpClient}
+ * that is consequently used by {@link JettyConnector}
+ */
+@Contract
+public interface JettyHttpClientContract {
+    /**
+     * Supply a user predefined HttpClient
+     * @return a user predefined HttpClient
+     */
+    HttpClient getHttpClient();
+}

connectors/jetty-connector/src/main/java8/org/glassfish/jersey/jetty/connector/JettyHttpClientSupplier.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+package org.glassfish.jersey.jetty.connector;
+
+import jakarta.ws.rs.ProcessingException;
+import org.eclipse.jetty.client.HttpClient;
+import org.glassfish.jersey.internal.util.JdkVersion;
+
+/**
+ * Jetty HttpClient supplier to be registered into Jersey configuration to be used by {@link JettyConnector}.
+ * Not every possible configuration option is covered by the Jetty Connector and this supplier offers a way to provide
+ * an HttpClient that has configured the options not covered by the Jetty Connector.
+ * <p>
+ *     Typical usage:
+ * </p>
+ * <pre>
+ * {@code
+ * HttpClient httpClient = ...
+ *
+ * ClientConfig config = new ClientConfig();
+ * config.connectorProvider(new JettyConnectorProvider());
+ * config.register(new JettyHttpClientSupplier(httpClient));
+ * Client client = ClientBuilder.newClient(config);
+ * }
+ * </pre>
+ * <p>
+ *     The {@code HttpClient} is configured as if it was created by {@link JettyConnector} the usual way.
+ * </p>
+ */
+public class JettyHttpClientSupplier implements JettyHttpClientContract {
+    private final HttpClient httpClient;
+
+    /**
+     * {@code HttpClient} supplier to be optionally registered to a {@link org.glassfish.jersey.client.ClientConfig}
+     * @param httpClient a HttpClient to be supplied when {@link JettyConnector#getHttpClient()} is called.
+     */
+    public JettyHttpClientSupplier(HttpClient httpClient) {
+        this.httpClient = httpClient;
+    }
+
+    @Override
+    public HttpClient getHttpClient() {
+        if (JdkVersion.getJdkVersion().getMajor() < 11) {
+            throw new ProcessingException(LocalizationMessages.NOT_SUPPORTED());
+        }
+        return null; // does not work at JDK 1.8
+    }
+}

containers/jetty-http/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2013, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0, which is available at
@@ -100,6 +100,21 @@
             <activation>
                 <jdk>1.8</jdk>
             </activation>
+            <properties>
+                <jetty.version>9.4.28.v20200408</jetty.version>
+            </properties>
+            <dependencies>
+                <dependency>
+                    <groupId>org.eclipse.jetty</groupId>
+                    <artifactId>jetty-client</artifactId>
+                    <version>${jetty.version}</version>
+                </dependency>
+                <dependency>
+                    <groupId>org.eclipse.jetty</groupId>
+                    <artifactId>jetty-util</artifactId>
+                    <version>${jetty.version}</version>
+                </dependency>
+            </dependencies>
             <build>
                 <directory>${java8.build.outputDirectory}</directory>
                 <plugins>

containers/jetty-http/src/main/java8/org/glassfish/jersey/jetty/JettyHttpContainerFactory.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package org.glassfish.jersey.jetty;
+
+import jakarta.ws.rs.ProcessingException;
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.util.ssl.SslContextFactory;
+import org.glassfish.jersey.internal.util.JdkVersion;
+import org.glassfish.jersey.jetty.internal.LocalizationMessages;
+import org.glassfish.jersey.server.ResourceConfig;
+
+import java.net.URI;
+
+/**
+ * Jersey {@code Container} stub.
+ *
+ * For JDK 1.8 only since Jetty 11 does not support JDKs below 11
+ *
+ */
+public final class JettyHttpContainerFactory {
+
+    private JettyHttpContainerFactory() {
+    }
+
+    public static Server createServer(final URI uri) throws ProcessingException {
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    public static Server createServer(final URI uri, final boolean start) throws ProcessingException {
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    public static Server createServer(final URI uri, final ResourceConfig config)
+            throws ProcessingException {
+
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    public static Server createServer(final URI uri, final ResourceConfig configuration, final boolean start)
+            throws ProcessingException {
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    public static Server createServer(final URI uri, final ResourceConfig config, final boolean start,
+                                      final Object parentContext) {
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    public static Server createServer(final URI uri, final ResourceConfig config, final Object parentContext) {
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    public static Server createServer(final URI uri, final SslContextFactory.Server sslContextFactory,
+                                      final ResourceConfig config)
+            throws ProcessingException {
+        validateJdk();
+        return null; // does not work at JDK 1.8    }
+    }
+
+    public static Server createServer(final URI uri,
+                                      final SslContextFactory.Server sslContextFactory,
+                                      final JettyHttpContainer handler,
+                                      final boolean start) {
+        validateJdk();
+        return null; // does not work at JDK 1.8
+    }
+
+    private static void validateJdk() {
+        if (JdkVersion.getJdkVersion().getMajor() < 11) {
+            throw new ProcessingException(LocalizationMessages.NOT_SUPPORTED());
+        }
+    }
+}