| /* |
| * Copyright (C) 2019, Google LLC. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| 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); |
| } |
| } |