Jonathan Tan
5 years ago
committed by
Gerrit Code Review @ Eclipse.org
2 changed files with 221 additions and 0 deletions
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/* |
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* Copyright (C) 2019, Google LLC. |
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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 static org.junit.Assert.assertEquals; |
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import static org.junit.Assert.assertTrue; |
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import java.util.Arrays; |
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import org.junit.Test; |
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import org.junit.runner.RunWith; |
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import org.junit.runners.JUnit4; |
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@RunWith(JUnit4.class) |
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public class ProtocolV2HookChainTest { |
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@Test |
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public void testDefaultIfEmpty() { |
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ProtocolV2Hook[] noHooks = {}; |
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ProtocolV2Hook newChain = ProtocolV2HookChain |
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.newChain(Arrays.asList(noHooks)); |
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assertEquals(newChain, ProtocolV2Hook.DEFAULT); |
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} |
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@Test |
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public void testFlattenChainIfOnlyOne() { |
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FakeProtocolV2Hook hook1 = new FakeProtocolV2Hook(); |
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ProtocolV2Hook newChain = ProtocolV2HookChain |
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.newChain(Arrays.asList(ProtocolV2Hook.DEFAULT, hook1)); |
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assertEquals(newChain, hook1); |
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} |
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@Test |
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public void testMultipleHooks() throws ServiceMayNotContinueException { |
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FakeProtocolV2Hook hook1 = new FakeProtocolV2Hook(); |
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FakeProtocolV2Hook hook2 = new FakeProtocolV2Hook(); |
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ProtocolV2Hook chained = ProtocolV2HookChain |
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.newChain(Arrays.asList(hook1, hook2)); |
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chained.onLsRefs(LsRefsV2Request.builder().build()); |
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assertTrue(hook1.wasInvoked()); |
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assertTrue(hook2.wasInvoked()); |
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} |
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private static final class FakeProtocolV2Hook implements ProtocolV2Hook { |
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boolean invoked; |
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@Override |
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public void onLsRefs(LsRefsV2Request req) |
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throws ServiceMayNotContinueException { |
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invoked = true; |
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} |
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@Override |
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public void onCapabilities(CapabilitiesV2Request req) |
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throws ServiceMayNotContinueException { |
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throw new UnsupportedOperationException(); |
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} |
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@Override |
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public void onFetch(FetchV2Request req) |
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throws ServiceMayNotContinueException { |
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throw new UnsupportedOperationException(); |
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} |
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public boolean wasInvoked() { |
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return invoked; |
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} |
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} |
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} |
@ -0,0 +1,110 @@
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/* |
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* Copyright (C) 2019, Google LLC. |
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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 |
||||
* 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, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||||
* 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.Collections; |
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import java.util.List; |
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import java.util.stream.Collectors; |
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/** |
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* {@link org.eclipse.jgit.transport.ProtocolV2Hook} that delegates to a list of |
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* other hooks. |
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* <p> |
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* Hooks are run in the order passed to the constructor. If running a method on |
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* one hook throws an exception, execution of remaining hook methods is aborted. |
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* |
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* @since 5.5 |
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*/ |
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public class ProtocolV2HookChain implements ProtocolV2Hook { |
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private final List<? extends ProtocolV2Hook> hooks; |
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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 ProtocolV2Hook newChain( |
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List<? extends ProtocolV2Hook> hooks) { |
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List<? extends ProtocolV2Hook> newHooks = hooks.stream() |
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.filter(hook -> !hook.equals(ProtocolV2Hook.DEFAULT)) |
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.collect(Collectors.toList()); |
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if (newHooks.isEmpty()) { |
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return ProtocolV2Hook.DEFAULT; |
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} else if (newHooks.size() == 1) { |
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return newHooks.get(0); |
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} else { |
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return new ProtocolV2HookChain(newHooks); |
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} |
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} |
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@Override |
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public void onCapabilities(CapabilitiesV2Request req) |
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throws ServiceMayNotContinueException { |
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for (ProtocolV2Hook hook : hooks) { |
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hook.onCapabilities(req); |
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} |
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} |
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@Override |
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public void onLsRefs(LsRefsV2Request req) |
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throws ServiceMayNotContinueException { |
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for (ProtocolV2Hook hook : hooks) { |
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hook.onLsRefs(req); |
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} |
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} |
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@Override |
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public void onFetch(FetchV2Request req) |
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throws ServiceMayNotContinueException { |
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for (ProtocolV2Hook hook : hooks) { |
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hook.onFetch(req); |
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} |
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} |
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private ProtocolV2HookChain(List<? extends ProtocolV2Hook> hooks) { |
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this.hooks = Collections.unmodifiableList(hooks); |
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} |
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} |
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