blob: c9f88dd164a74622fade026a106768214184a57c [file] [log] [blame]
/*
* Copyright (C) 2011, Google Inc.
* 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,
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* 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.Collection;
import java.util.List;
import org.eclipse.jgit.lib.ObjectId;
/**
* {@link PreUploadHook} 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.
*/
public class PreUploadHookChain implements PreUploadHook {
private final PreUploadHook[] hooks;
private final int count;
/**
* 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 PreUploadHook newChain(List<? extends PreUploadHook> hooks) {
PreUploadHook[] newHooks = new PreUploadHook[hooks.size()];
int i = 0;
for (PreUploadHook hook : hooks)
if (hook != PreUploadHook.NULL)
newHooks[i++] = hook;
if (i == 0)
return PreUploadHook.NULL;
else if (i == 1)
return newHooks[0];
else
return new PreUploadHookChain(newHooks, i);
}
@Override
public void onBeginNegotiateRound(UploadPack up,
Collection<? extends ObjectId> wants, int cntOffered)
throws ServiceMayNotContinueException {
for (int i = 0; i < count; i++)
hooks[i].onBeginNegotiateRound(up, wants, cntOffered);
}
@Override
public void onEndNegotiateRound(UploadPack up,
Collection<? extends ObjectId> wants, int cntCommon,
int cntNotFound, boolean ready)
throws ServiceMayNotContinueException {
for (int i = 0; i < count; i++)
hooks[i].onEndNegotiateRound(up, wants, cntCommon, cntNotFound, ready);
}
@Override
public void onSendPack(UploadPack up,
Collection<? extends ObjectId> wants,
Collection<? extends ObjectId> haves)
throws ServiceMayNotContinueException {
for (int i = 0; i < count; i++)
hooks[i].onSendPack(up, wants, haves);
}
private PreUploadHookChain(PreUploadHook[] hooks, int count) {
this.hooks = hooks;
this.count = count;
}
}