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Fixed NPE on chunk unload

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This commit is contained in:
nossr50 2024-11-07 18:55:59 -08:00
parent f304a1fbb9
commit 3f5f510fc5
2 changed files with 23 additions and 15 deletions
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17
src/main/java/com/gmail/nossr50/util/blockmeta/HashChunkManager.java
View File

@ -39,9 +39,7 @@ public class HashChunkManager implements ChunkManager {
}
private synchronized @Nullable ChunkStore readChunkStore(@NotNull World world, int cx, int cz) throws IOException {
McMMOSimpleRegionFile rf = getReadableSimpleRegionFile(world, cx, cz);
if (rf == null)
return null; // If there is no region file, there can't be a chunk
final McMMOSimpleRegionFile rf = getWriteableSimpleRegionFile(world, cx, cz);
try (DataInputStream in = rf.getInputStream(cx, cz)) { // Get input stream for chunk
if (in == null)
return null; // No chunk
@ -74,17 +72,6 @@ public class HashChunkManager implements ChunkManager {
});
}
private synchronized @Nullable McMMOSimpleRegionFile getReadableSimpleRegionFile(@NotNull World world, int cx, int cz) {
CoordinateKey regionKey = toRegionKey(world.getUID(), cx, cz);
return regionMap.computeIfAbsent(regionKey, k -> {
File regionFile = getRegionFile(world, regionKey);
if (!regionFile.exists())
return null; // Don't create the file on read-only operations
return new McMMOSimpleRegionFile(regionFile, regionKey.x, regionKey.z);
});
}
private @NotNull File getRegionFile(@NotNull World world, @NotNull CoordinateKey regionKey) {
if (world.getUID() != regionKey.worldID)
throw new IllegalArgumentException();
@ -112,7 +99,7 @@ public class HashChunkManager implements ChunkManager {
CoordinateKey regionKey = toRegionKey(world.getUID(), cx, cz);
HashSet<CoordinateKey> chunkKeys = chunkUsageMap.get(regionKey);
chunkKeys.remove(chunkKey); // remove from region file in-use set
// If it was last chunk in region, close the region file and remove it from memory
// If it was last chunk in the region, close the region file and remove it from memory
if (chunkKeys.isEmpty()) {
chunkUsageMap.remove(regionKey);
regionMap.remove(regionKey).close();

21
src/test/java/com/gmail/nossr50/util/blockmeta/UserBlockTrackerTest.java
View File

@ -170,6 +170,27 @@ class UserBlockTrackerTest {
assertTrue(chunkManager.isIneligible(mockBlockA));
}
@Test
void testUnload() {
final ChunkManager chunkManager = new HashChunkManager();
Block mockBlockA = Mockito.mock(Block.class);
when(mockBlockA.getX()).thenReturn(15);
when(mockBlockA.getZ()).thenReturn(15);
when(mockBlockA.getY()).thenReturn(0);
when(mockBlockA.getWorld()).thenReturn(mockWorld);
Block mockBlockB = Mockito.mock(Block.class);
when(mockBlockB.getX()).thenReturn(-15);
when(mockBlockB.getZ()).thenReturn(-15);
when(mockBlockB.getY()).thenReturn(0);
when(mockBlockB.getWorld()).thenReturn(mockWorld);
chunkManager.setIneligible(mockBlockA);
chunkManager.setEligible(mockBlockB);
assertTrue(chunkManager.isIneligible(mockBlockA));
chunkManager.chunkUnloaded(0, 0, mockWorld);
}
@NotNull
private Block initMockBlock(int x, int y, int z) {
final Block mockBlock = Mockito.mock(Block.class);