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- /*
- * Copyright (C) 2019, Google LLC.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- package org.eclipse.jgit.transport;
-
- import java.util.Collections;
- import java.util.List;
- import java.util.stream.Collectors;
-
- /**
- * {@link org.eclipse.jgit.transport.ProtocolV2Hook} that delegates to a list of
- * other hooks.
- * <p>
- * Hooks are run in the order passed to the constructor. If running a method on
- * one hook throws an exception, execution of remaining hook methods is aborted.
- *
- * @since 5.5
- */
- public class ProtocolV2HookChain implements ProtocolV2Hook {
- private final List<? extends ProtocolV2Hook> hooks;
-
- /**
- * Create a new hook chaining the given hooks together.
- *
- * @param hooks
- * hooks to execute, in order.
- * @return a new hook chain of the given hooks.
- */
- public static ProtocolV2Hook newChain(
- List<? extends ProtocolV2Hook> hooks) {
- List<? extends ProtocolV2Hook> newHooks = hooks.stream()
- .filter(hook -> !hook.equals(ProtocolV2Hook.DEFAULT))
- .collect(Collectors.toList());
-
- if (newHooks.isEmpty()) {
- return ProtocolV2Hook.DEFAULT;
- } else if (newHooks.size() == 1) {
- return newHooks.get(0);
- } else {
- return new ProtocolV2HookChain(newHooks);
- }
- }
-
- @Override
- public void onCapabilities(CapabilitiesV2Request req)
- throws ServiceMayNotContinueException {
- for (ProtocolV2Hook hook : hooks) {
- hook.onCapabilities(req);
- }
- }
-
- @Override
- public void onLsRefs(LsRefsV2Request req)
- throws ServiceMayNotContinueException {
- for (ProtocolV2Hook hook : hooks) {
- hook.onLsRefs(req);
- }
- }
-
- @Override
- public void onFetch(FetchV2Request req)
- throws ServiceMayNotContinueException {
- for (ProtocolV2Hook hook : hooks) {
- hook.onFetch(req);
- }
- }
-
- private ProtocolV2HookChain(List<? extends ProtocolV2Hook> hooks) {
- this.hooks = Collections.unmodifiableList(hooks);
- }
- }
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