Examples with CursorContext org.neo4j.io.pagecache.context.CursorContext used on opensource projects

Example 21 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class ReadOnlyLogVersionRepositoryIT method tracePageCacheAccessOnReadOnlyLogRepoConstruction.

@Test
void tracePageCacheAccessOnReadOnlyLogRepoConstruction() throws IOException {
    var pageCacheTracer = new DefaultPageCacheTracer();
    var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("tracePageCacheAccessOnReadOnlyLogRepoConstruction"));
    new ReadOnlyLogVersionRepository(pageCache, databaseLayout, cursorContext);
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isEqualTo(2);
    assertThat(cursorTracer.unpins()).isEqualTo(2);
    assertThat(cursorTracer.hits()).isEqualTo(2);
}

Example 22 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class CommitProcessTracingIT method tracePageCacheAccessOnEmptyTransactionApply.

@Test
void tracePageCacheAccessOnEmptyTransactionApply() throws TransactionFailureException {
    var transaction = new PhysicalTransactionRepresentation(emptyList(), EMPTY_BYTE_ARRAY, 0, 0, 0, 0, ANONYMOUS);
    var pageCacheTracer = new DefaultPageCacheTracer();
    try (var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("tracePageCacheAccessOnEmptyTransactionApply"))) {
        assertZeroCursor(cursorContext);
        commitProcess.commit(new TransactionToApply(transaction, cursorContext), NULL, EXTERNAL);
        assertCursor(cursorContext, 2);
    }
}

Example 23 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class CommitProcessTracingIT method tracePageCacheAccessOnCommandCreation.

@Test
void tracePageCacheAccessOnCommandCreation() throws KernelException {
    long sourceId;
    try (Transaction transaction = database.beginTx()) {
        sourceId = transaction.createNode(Label.label("a")).getId();
        transaction.commit();
    }
    var pageCacheTracer = new DefaultPageCacheTracer();
    try (var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("tracePageCacheAccessOnCommandCreation"));
        var reader = storageEngine.newReader()) {
        assertZeroCursor(cursorContext);
        try (CommandCreationContext context = storageEngine.newCommandCreationContext(INSTANCE)) {
            context.initialize(cursorContext);
            List<StorageCommand> commands = new ArrayList<>();
            var txState = new TxState();
            txState.nodeDoAddLabel(1, sourceId);
            storageEngine.createCommands(commands, txState, reader, context, IGNORE, LockTracer.NONE, 0, NO_DECORATION, cursorContext, INSTANCE);
        }
        assertCursor(cursorContext, 2);
    }
}

Example 24 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class IndexingService method init.

/**
 * Called while the database starts up, before recovery.
 */
@Override
public void init() throws IOException {
    validateDefaultProviderExisting();
    try (var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer(INIT_TAG))) {
        indexMapRef.modify(indexMap -> {
            Map<InternalIndexState, List<IndexLogRecord>> indexStates = new EnumMap<>(InternalIndexState.class);
            for (IndexDescriptor descriptor : indexDescriptors) {
                // No index (except NLI) is allowed to have the name generated for NLI.
                if (descriptor.getName().equals(IndexDescriptor.NLI_GENERATED_NAME) && !(descriptor.schema().isAnyTokenSchemaDescriptor() && descriptor.schema().entityType() == NODE)) {
                    throw new IllegalStateException("Index '" + descriptor.userDescription(tokenNameLookup) + "' is using a reserved name: '" + IndexDescriptor.NLI_GENERATED_NAME + "'. This index must be removed on an earlier version " + "to be able to use binaries for version 4.3 or newer.");
                }
                IndexProxy indexProxy;
                IndexProviderDescriptor providerDescriptor = descriptor.getIndexProvider();
                IndexProvider provider = providerMap.lookup(providerDescriptor);
                InternalIndexState initialState = provider.getInitialState(descriptor, cursorContext);
                indexStates.computeIfAbsent(initialState, internalIndexState -> new ArrayList<>()).add(new IndexLogRecord(descriptor));
                internalLog.debug(indexStateInfo("init", initialState, descriptor));
                switch(initialState) {
                    case ONLINE:
                        monitor.initialState(databaseName, descriptor, ONLINE);
                        indexProxy = indexProxyCreator.createOnlineIndexProxy(descriptor);
                        break;
                    case POPULATING:
                        // The database was shut down during population, or a crash has occurred, or some other sad thing.
                        monitor.initialState(databaseName, descriptor, POPULATING);
                        indexProxy = indexProxyCreator.createRecoveringIndexProxy(descriptor);
                        break;
                    case FAILED:
                        monitor.initialState(databaseName, descriptor, FAILED);
                        IndexPopulationFailure failure = failure(provider.getPopulationFailure(descriptor, cursorContext));
                        indexProxy = indexProxyCreator.createFailedIndexProxy(descriptor, failure);
                        break;
                    default:
                        throw new IllegalArgumentException("" + initialState);
                }
                indexMap.putIndexProxy(indexProxy);
            }
            logIndexStateSummary("init", indexStates);
            return indexMap;
        });
    }
    indexStatisticsStore.init();
}

Example 25 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class GBPTreeGenericCountsStoreTest method shouldRebuildOnMismatchingLastCommittedTxId.

@Test
void shouldRebuildOnMismatchingLastCommittedTxId() throws IOException {
    // given some pre-state
    long countsStoreTxId = BASE_TX_ID + 1;
    try (CountUpdater updater = countsStore.updater(countsStoreTxId, NULL)) {
        updater.increment(nodeKey(1), 1);
    }
    // when
    countsStore.checkpoint(NULL);
    closeCountsStore();
    MutableBoolean rebuildTriggered = new MutableBoolean();
    openCountsStore(new Rebuilder() {

        @Override
        public long lastCommittedTxId() {
            return countsStoreTxId + 1;
        }

        @Override
        public void rebuild(CountUpdater updater, CursorContext cursorContext, MemoryTracker memoryTracker) {
            rebuildTriggered.setTrue();
        }
    });
    // then
    assertThat(rebuildTriggered.booleanValue()).isTrue();
}