@Test
public void testChunkCache() throws IOException {
Database database = new Database();
// Round 1: Add chunk to new database version, then add database version
DatabaseVersion databaseVersion1 = TestDatabaseUtil.createDatabaseVersion();
ChunkEntry chunkA1 = new ChunkEntry(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}, 12);
databaseVersion1.addChunk(chunkA1);
database.addDatabaseVersion(databaseVersion1);
assertEquals(chunkA1, database.getChunk(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}));
// Round 2: Add chunk to new database version, then add database version
DatabaseVersion databaseVersion2 = TestDatabaseUtil.createDatabaseVersion(databaseVersion1);
ChunkEntry chunkA2 = new ChunkEntry(new byte[] {9, 8, 7, 6, 5, 4, 3, 2, 1}, 112);
databaseVersion2.addChunk(chunkA2);
database.addDatabaseVersion(databaseVersion2);
assertEquals(chunkA1, database.getChunk(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(chunkA2, database.getChunk(new byte[] {9, 8, 7, 6, 5, 4, 3, 2, 1}));
// Round 3: Add chunk to new database version, then add database version
DatabaseVersion databaseVersion3 = TestDatabaseUtil.createDatabaseVersion(databaseVersion2);
ChunkEntry chunkA3 = new ChunkEntry(new byte[] {1, 1, 1, 1, 1, 1, 1, 1, 1}, 192);
databaseVersion3.addChunk(chunkA3);
database.addDatabaseVersion(databaseVersion3);
assertEquals(chunkA1, database.getChunk(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(chunkA2, database.getChunk(new byte[] {9, 8, 7, 6, 5, 4, 3, 2, 1}));
assertEquals(chunkA3, database.getChunk(new byte[] {1, 1, 1, 1, 1, 1, 1, 1, 1}));
}
@Test
public void testMultiChunkCache() throws IOException {
Database database = new Database();
// Round 1: Add chunk to multichunk
DatabaseVersion databaseVersion1 = TestDatabaseUtil.createDatabaseVersion();
MultiChunkEntry multiChunkP1 = new MultiChunkEntry(new byte[] {8, 8, 8, 8, 8, 8, 8, 8});
ChunkEntry chunkA1 = new ChunkEntry(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}, 12);
multiChunkP1.addChunk(new ChunkEntryId(chunkA1.getChecksum()));
databaseVersion1.addChunk(chunkA1);
databaseVersion1.addMultiChunk(multiChunkP1);
database.addDatabaseVersion(databaseVersion1);
assertEquals(chunkA1, database.getChunk(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(multiChunkP1, database.getMultiChunk(new byte[] {8, 8, 8, 8, 8, 8, 8, 8}));
// Round 2: Add chunk to multichunk
DatabaseVersion databaseVersion2 = TestDatabaseUtil.createDatabaseVersion(databaseVersion1);
MultiChunkEntry multiChunkP2 = new MultiChunkEntry(new byte[] {7, 7, 7, 7, 7, 7, 7, 7, 7});
MultiChunkEntry multiChunkP3 = new MultiChunkEntry(new byte[] {5, 5, 5, 5, 5, 5, 5, 5, 5});
ChunkEntry chunkA2 = new ChunkEntry(new byte[] {9, 2, 3, 4, 5, 7, 8, 9, 0}, 912);
ChunkEntry chunkA3 = new ChunkEntry(new byte[] {8, 2, 3, 4, 5, 7, 8, 9, 0}, 812);
ChunkEntry chunkA4 = new ChunkEntry(new byte[] {7, 2, 3, 4, 5, 7, 8, 9, 0}, 712);
multiChunkP2.addChunk(new ChunkEntryId(chunkA2.getChecksum()));
multiChunkP2.addChunk(new ChunkEntryId(chunkA3.getChecksum()));
multiChunkP3.addChunk(new ChunkEntryId(chunkA4.getChecksum()));
databaseVersion2.addChunk(chunkA2);
databaseVersion2.addChunk(chunkA3);
databaseVersion2.addChunk(chunkA4);
databaseVersion2.addMultiChunk(multiChunkP2);
databaseVersion2.addMultiChunk(multiChunkP3);
database.addDatabaseVersion(databaseVersion2);
// fail("xx");
assertEquals(chunkA1, database.getChunk(new byte[] {1, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(chunkA2, database.getChunk(new byte[] {9, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(chunkA3, database.getChunk(new byte[] {8, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(chunkA4, database.getChunk(new byte[] {7, 2, 3, 4, 5, 7, 8, 9, 0}));
assertEquals(multiChunkP1, database.getMultiChunk(new byte[] {8, 8, 8, 8, 8, 8, 8, 8}));
assertEquals(multiChunkP2, database.getMultiChunk(new byte[] {7, 7, 7, 7, 7, 7, 7, 7, 7}));
assertEquals(multiChunkP3, database.getMultiChunk(new byte[] {5, 5, 5, 5, 5, 5, 5, 5, 5}));
}
/**
* Checks if chunk already exists in all database versions Afterwards checks if chunk exists in
* new introduced database version.
*/
@Override
public boolean onChunk(Chunk chunk) {
ChunkChecksum chunkChecksum = new ChunkChecksum(chunk.getChecksum());
chunkEntry = localDatabase.getChunk(chunkChecksum);
if (chunkEntry == null) {
chunkEntry = newDatabaseVersion.getChunk(chunkChecksum);
if (chunkEntry == null) {
logger.log(Level.FINER, "- Chunk new: {0}", chunkChecksum.toString());
chunkEntry = new ChunkEntry(chunkChecksum, chunk.getSize());
newDatabaseVersion.addChunk(chunkEntry);
return true;
}
}
logger.log(Level.FINER, "- Chunk exists: {0}", StringUtil.toHex(chunk.getChecksum()));
return false;
}
