new InvocationBuilderListener SPI

Signed-off-by: Jan Supol <jan.supol@oracle.com>

Author: jansupol

core-client/src/main/java/org/glassfish/jersey/client/InvocationBuilderListenerStage.java

@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2011, 2019 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.client;
+
+import org.glassfish.jersey.client.spi.InvocationBuilderListener;
+import org.glassfish.jersey.internal.inject.InjectionManager;
+import org.glassfish.jersey.internal.inject.Providers;
+import org.glassfish.jersey.model.internal.RankedComparator;
+
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.core.CacheControl;
+import javax.ws.rs.core.Cookie;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import java.util.Iterator;
+import java.util.Locale;
+
+/**
+ * Client request processing stage. During a request creation, when the {@link Invocation.Builder}
+ * would be created, this class is utilized.
+ */
+/* package */ class InvocationBuilderListenerStage {
+    final Iterator<InvocationBuilderListener> invocationBuilderListenerIterator;
+
+    /* package */ InvocationBuilderListenerStage(InjectionManager injectionManager) {
+        final RankedComparator<InvocationBuilderListener> comparator =
+                new RankedComparator<>(RankedComparator.Order.ASCENDING);
+        invocationBuilderListenerIterator = Providers
+                .getAllProviders(injectionManager, InvocationBuilderListener.class, comparator).iterator();
+    }
+
+    /* package */ void invokeListener(Invocation.Builder builder) {
+        while (invocationBuilderListenerIterator.hasNext()) {
+            invocationBuilderListenerIterator.next().onNewBuilder(new InvocationBuilderContextImpl(builder));
+        }
+    }
+
+    private static class InvocationBuilderContextImpl implements InvocationBuilderListener.InvocationBuilderContext {
+        private final Invocation.Builder builder;
+
+        private InvocationBuilderContextImpl(Invocation.Builder builder) {
+            this.builder = builder;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext accept(String... mediaTypes) {
+            builder.accept(mediaTypes);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext accept(MediaType... mediaTypes) {
+            builder.accept(mediaTypes);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext acceptLanguage(Locale... locales) {
+            builder.acceptLanguage(locales);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext acceptLanguage(String... locales) {
+            builder.acceptLanguage(locales);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext acceptEncoding(String... encodings) {
+            builder.acceptEncoding(encodings);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext cookie(Cookie cookie) {
+            builder.cookie(cookie);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext cookie(String name, String value) {
+            builder.cookie(name, value);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext cacheControl(CacheControl cacheControl) {
+            builder.cacheControl(cacheControl);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext header(String name, Object value) {
+            builder.header(name, value);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext headers(MultivaluedMap<String, Object> headers) {
+            builder.headers(headers);
+            return this;
+        }
+
+        @Override
+        public InvocationBuilderListener.InvocationBuilderContext property(String name, Object value) {
+            builder.property(name, value);
+            return this;
+        }
+    }
+}
+

core-client/src/main/java/org/glassfish/jersey/client/spi/InvocationBuilderListener.java

@@ -0,0 +1,171 @@
+/*
+ * Copyright (c) 2019 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.client.spi;
+
+import org.glassfish.jersey.Beta;
+import org.glassfish.jersey.spi.Contract;
+
+import javax.ws.rs.ConstrainedTo;
+import javax.ws.rs.RuntimeType;
+import javax.ws.rs.client.ClientRequestContext;
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.core.CacheControl;
+import javax.ws.rs.core.Cookie;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import java.util.Locale;
+
+/**
+ * Implementations of this interface will be notified when a new Invocation.Builder
+ * is created. This will allow implementations to access the invocation builders,
+ * and is intended for global providers. For example, the Invocation.Builder properties can be
+ * accessed to set properties that are available on the {@link javax.ws.rs.client.ClientRequestContext}.
+ *
+ * In order for the InvocationBuilderListener to be called, the implementation of the interface needs
+ * to be registered on the {@code Client} the same way the {@code ClientRequestFilter} is registered, for instance.
+ *
+ * @since 2.30
+ */
+@Beta
+@Contract
+@ConstrainedTo(RuntimeType.CLIENT)
+public interface InvocationBuilderListener {
+
+    /**
+     * An {@link javax.ws.rs.client.Invocation.Builder} subset of setter methods.
+     */
+    public interface InvocationBuilderContext {
+        /**
+         * Add the accepted response media types.
+         *
+         * @param mediaTypes accepted response media types.
+         * @return the updated context.
+         */
+        InvocationBuilderContext accept(String... mediaTypes);
+
+        /**
+         * Add the accepted response media types.
+         *
+         * @param mediaTypes accepted response media types.
+         * @return the updated context.
+         */
+        InvocationBuilderContext accept(MediaType... mediaTypes);
+
+        /**
+         * Add acceptable languages.
+         *
+         * @param locales an array of the acceptable languages.
+         * @return the updated context.
+         */
+        InvocationBuilderContext acceptLanguage(Locale... locales);
+
+        /**
+         * Add acceptable languages.
+         *
+         * @param locales an array of the acceptable languages.
+         * @return the updated context.
+         */
+        InvocationBuilderContext acceptLanguage(String... locales);
+
+        /**
+         * Add acceptable encodings.
+         *
+         * @param encodings an array of the acceptable encodings.
+         * @return the updated context.
+         */
+        InvocationBuilderContext acceptEncoding(String... encodings);
+
+        /**
+         * Add a cookie to be set.
+         *
+         * @param cookie to be set.
+         * @return the updated context.
+         */
+        InvocationBuilderContext cookie(Cookie cookie);
+
+        /**
+         * Add a cookie to be set.
+         *
+         * @param name  the name of the cookie.
+         * @param value the value of the cookie.
+         * @return the updated context.
+         */
+        InvocationBuilderContext cookie(String name, String value);
+
+        /**
+         * Set the cache control data of the message.
+         *
+         * @param cacheControl the cache control directives, if {@code null}
+         *                     any existing cache control directives will be removed.
+         * @return the updated context.
+         */
+        InvocationBuilderContext cacheControl(CacheControl cacheControl);
+
+        /**
+         * Add an arbitrary header.
+         *
+         * @param name  the name of the header
+         * @param value the value of the header, the header will be serialized
+         *              using a {@link javax.ws.rs.ext.RuntimeDelegate.HeaderDelegate} if
+         *              one is available via {@link javax.ws.rs.ext.RuntimeDelegate#createHeaderDelegate(java.lang.Class)}
+         *              for the class of {@code value} or using its {@code toString} method
+         *              if a header delegate is not available. If {@code value} is {@code null}
+         *              then all current headers of the same name will be removed.
+         * @return the updated context.
+         */
+        InvocationBuilderContext header(String name, Object value);
+
+        /**
+         * Replaces all existing headers with the newly supplied headers.
+         *
+         * @param headers new headers to be set, if {@code null} all existing
+         *                headers will be removed.
+         * @return the updated context.
+         */
+        InvocationBuilderContext headers(MultivaluedMap<String, Object> headers);
+
+        /**
+         * Set a new property in the context of a request represented by this invocation builder.
+         * <p>
+         * The property is available for a later retrieval via {@link ClientRequestContext#getProperty(String)}
+         * or {@link javax.ws.rs.ext.InterceptorContext#getProperty(String)}.
+         * If a property with a given name is already set in the request context,
+         * the existing value of the property will be updated.
+         * Setting a {@code null} value into a property effectively removes the property
+         * from the request property bag.
+         * </p>
+         *
+         * @param name  property name.
+         * @param value (new) property value. {@code null} value removes the property
+         *              with the given name.
+         * @return the updated context.
+         * @see Invocation#property(String, Object)
+         */
+        InvocationBuilderContext property(String name, Object value);
+    }
+
+    /**
+     * Whenever a method on {@link Invocation.Builder} that does not return the {@link Invocation.Builder}
+     * is called, (i.e. methods that are not part of the {@link InvocationBuilderContext}, for instance
+     * {@link Invocation.Builder#async()}, {@link Invocation.Builder#build(String)},
+     * {@link Invocation.Builder#invoke()}, {@link Invocation.Builder#rx()}, or
+     * {@link Invocation.Builder#submit()}), this method would be called.
+     * @param context the updated {@link InvocationBuilderContext}.
+     */
+    void onNewBuilder(InvocationBuilderContext context);
+
+}