Add an AdvertiseRefsHookChain, similar to the other hook chains
Change-Id: I3bb0dc86047fe0446d18e0055f714092a658d228
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/*
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* Copyright (C) 2012, Google Inc.
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* and other copyright owners as documented in the project's IP log.
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*
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* This program and the accompanying materials are made available
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* under the terms of the Eclipse Distribution License v1.0 which
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* accompanies this distribution, is reproduced below, and is
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* available at http://www.eclipse.org/org/documents/edl-v10.php
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* - Neither the name of the Eclipse Foundation, Inc. nor the
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* names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.transport;
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import java.util.List;
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/**
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* {@link AdvertiseRefsHook} that delegates to a list of other hooks.
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* <p>
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* Hooks are run in the order passed to the constructor. A hook may inspect or
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* modify the results of the previous hooks in the chain by calling
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* {@link UploadPack#getAdvertisedRefs()}, or
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* {@link ReceivePack#getAdvertisedRefs()} or
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* {@link ReceivePack#getAdvertisedObjects()}.
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*/
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public class AdvertiseRefsHookChain implements AdvertiseRefsHook {
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private final AdvertiseRefsHook[] hooks;
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private final int count;
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/**
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* Create a new hook chaining the given hooks together.
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*
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* @param hooks
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* hooks to execute, in order.
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* @return a new hook chain of the given hooks.
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*/
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public static AdvertiseRefsHook newChain(List<? extends AdvertiseRefsHook> hooks) {
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AdvertiseRefsHook[] newHooks = new AdvertiseRefsHook[hooks.size()];
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int i = 0;
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for (AdvertiseRefsHook hook : hooks)
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if (hook != AdvertiseRefsHook.DEFAULT)
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newHooks[i++] = hook;
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if (i == 0)
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return AdvertiseRefsHook.DEFAULT;
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else if (i == 1)
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return newHooks[0];
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else
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return new AdvertiseRefsHookChain(newHooks, i);
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}
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public void advertiseRefs(ReceivePack rp)
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throws ServiceMayNotContinueException {
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for (int i = 0; i < count; i++)
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hooks[i].advertiseRefs(rp);
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}
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public void advertiseRefs(UploadPack rp)
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throws ServiceMayNotContinueException {
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for (int i = 0; i < count; i++)
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hooks[i].advertiseRefs(rp);
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}
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private AdvertiseRefsHookChain(AdvertiseRefsHook[] hooks, int count) {
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this.hooks = hooks;
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this.count = count;
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}
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}
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