From 034ff96674c1cb1b4d8b708e79e5c137a00998d7 Mon Sep 17 00:00:00 2001 From: Colby Ranger Date: Fri, 2 Nov 2012 09:18:48 -0700 Subject: [PATCH] Add the an event and listener for a dfs PackIndex being loaded. The DfsPackFile will fire any static repository listeners on the event just before the PackIndex is loaded. Change-Id: Ie51098106bd5a1a32feae7d2dd068abf02b030ee --- .../dfs/BeforeDfsPackIndexLoadedEvent.java | 82 +++++++++++++++++++ .../dfs/BeforeDfsPackIndexLoadedListener.java | 57 +++++++++++++ .../eclipse/jgit/storage/dfs/DfsPackFile.java | 4 + 3 files changed, 143 insertions(+) create mode 100644 org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedEvent.java create mode 100644 org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedListener.java diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedEvent.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedEvent.java new file mode 100644 index 000000000..07d774304 --- /dev/null +++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedEvent.java @@ -0,0 +1,82 @@ +/* + * Copyright (C) 2012, 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, + * 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.storage.dfs; + +import org.eclipse.jgit.events.RepositoryEvent; + +/** + * Describes the {@link DfsPackFile} just before its index is loaded. Currently, + * DfsPackFile directly dispatches the event on + * {@link org.eclipse.jgit.lib.Repository#getGlobalListenerList}. Which means + * the call to {@link #getRepository} will always return null. + */ +public class BeforeDfsPackIndexLoadedEvent + extends RepositoryEvent { + private final DfsPackFile pack; + + /** + * A new event triggered before a PackFile index is loaded. + * + * @param pack + * the pack + */ + public BeforeDfsPackIndexLoadedEvent(DfsPackFile pack) { + this.pack = pack; + } + + /** @return the PackFile containing the index that will be loaded. */ + public DfsPackFile getPackFile() { + return pack; + } + + @Override + public Class getListenerType() { + return BeforeDfsPackIndexLoadedListener.class; + } + + @Override + public void dispatch(BeforeDfsPackIndexLoadedListener listener) { + listener.onBeforeDfsPackIndexLoaded(this); + } +} diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedListener.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedListener.java new file mode 100644 index 000000000..e0ddf4138 --- /dev/null +++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/BeforeDfsPackIndexLoadedListener.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2012, 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, + * 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.storage.dfs; + +import org.eclipse.jgit.events.RepositoryListener; + +/** Receives {@link BeforeDfsPackIndexLoadedEvent}s. */ +public interface BeforeDfsPackIndexLoadedListener extends RepositoryListener { + /** + * Invoked just before a pack index is loaded from the block cache. + * + * @param event + * information about the packs. + */ + void onBeforeDfsPackIndexLoaded(BeforeDfsPackIndexLoadedEvent event); +} diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java index 13f3c3698..3dabb9fc7 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java @@ -67,6 +67,7 @@ import org.eclipse.jgit.lib.AnyObjectId; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.lib.ObjectId; import org.eclipse.jgit.lib.ObjectLoader; +import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.storage.file.PackIndex; import org.eclipse.jgit.storage.file.PackReverseIndex; import org.eclipse.jgit.storage.pack.BinaryDelta; @@ -212,6 +213,9 @@ public final class DfsPackFile { if (invalid) throw new PackInvalidException(getPackName()); + Repository.getGlobalListenerList() + .dispatch(new BeforeDfsPackIndexLoadedEvent(this)); + synchronized (initLock) { idxref = index; if (idxref != null) {