/*
* 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
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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package org.eclipse.jgit.storage.dht.spi.memory;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeoutException;
import org.eclipse.jgit.generated.storage.dht.proto.GitStore.RefData;
import org.eclipse.jgit.storage.dht.DhtException;
import org.eclipse.jgit.storage.dht.DhtText;
import org.eclipse.jgit.storage.dht.RefDataUtil;
import org.eclipse.jgit.storage.dht.RefKey;
import org.eclipse.jgit.storage.dht.RepositoryKey;
import org.eclipse.jgit.storage.dht.spi.Context;
import org.eclipse.jgit.storage.dht.spi.RefTable;
import org.eclipse.jgit.storage.dht.spi.util.ColumnMatcher;
import com.google.protobuf.InvalidProtocolBufferException;
final class MemRefTable implements RefTable {
private final MemTable table = new MemTable();
private final ColumnMatcher colRef = new ColumnMatcher("ref:");
public Map<RefKey, RefData> getAll(Context options, RepositoryKey repository)
throws DhtException, TimeoutException {
Map<RefKey, RefData> out = new HashMap<RefKey, RefData>();
for (MemTable.Cell cell : table.scanFamily(repository.asBytes(), colRef)) {
RefKey ref = RefKey.fromBytes(colRef.suffix(cell.getName()));
try {
out.put(ref, RefData.parseFrom(cell.getValue()));
} catch (InvalidProtocolBufferException badCell) {
throw new DhtException(MessageFormat.format(
DhtText.get().invalidRefData, ref), badCell);
}
}
return out;
}
public boolean compareAndPut(RefKey refKey, RefData oldData, RefData newData)
throws DhtException, TimeoutException {
RepositoryKey repo = refKey.getRepositoryKey();
return table.compareAndSet( //
repo.asBytes(), //
colRef.append(refKey.asBytes()), //
oldData != RefDataUtil.NONE ? oldData.toByteArray() : null, //
newData.toByteArray());
}
public boolean compareAndRemove(RefKey refKey, RefData oldData)
throws DhtException, TimeoutException {
RepositoryKey repo = refKey.getRepositoryKey();
return table.compareAndSet( //
repo.asBytes(), //
colRef.append(refKey.asBytes()), //
oldData != RefDataUtil.NONE ? oldData.toByteArray() : null, //
null);
}
}