Examples with SubspaceProvider com.apple.foundationdb.record.provider.foundationdb.SubspaceProvider used on opensource projects

Example 1 with SubspaceProvider

use of com.apple.foundationdb.record.provider.foundationdb.SubspaceProvider in project fdb-record-layer by FoundationDB.

the class ReadVersionRecordStoreStateCache method get.

@Nonnull
@Override
public CompletableFuture<FDBRecordStoreStateCacheEntry> get(@Nonnull FDBRecordStore recordStore, @Nonnull FDBRecordStoreBase.StoreExistenceCheck existenceCheck) {
    final FDBRecordContext context = recordStore.getContext();
    validateContext(context);
    if (context.hasDirtyStoreState()) {
        // If a store info header has been modified during the course of this transaction's run,
        // don't go to the cache as its results may be stale.
        context.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_MISS);
        return FDBRecordStoreStateCacheEntry.load(recordStore, existenceCheck);
    } else {
        return context.getReadVersionAsync().thenCompose(readVersion -> {
            final SubspaceProvider subspaceProvider = recordStore.getSubspaceProvider();
            CompletableFuture<FDBRecordStoreStateCacheEntry> storeStateFuture = cache.orElseGet(Pair.of(subspaceProvider, readVersion), () -> {
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug(KeyValueLogMessage.of("store state cache miss", subspaceProvider.logKey(), subspaceProvider.toString(context), LogMessageKeys.READ_VERSION, readVersion));
                }
                context.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_MISS);
                return FDBRecordStoreStateCacheEntry.load(recordStore, existenceCheck);
            }).thenCompose(storeState -> storeState.handleCachedState(context, existenceCheck).thenApply(vignore -> storeState));
            if (context.getTimer() != null && MoreAsyncUtil.isCompletedNormally(storeStateFuture)) {
                context.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_HIT);
            }
            return storeStateFuture;
        });
    }
}

Example 2 with SubspaceProvider

use of com.apple.foundationdb.record.provider.foundationdb.SubspaceProvider in project fdb-record-layer by FoundationDB.

the class MetaDataVersionStampStoreStateCache method get.

@Nonnull
@Override
public CompletableFuture<FDBRecordStoreStateCacheEntry> get(@Nonnull FDBRecordStore recordStore, @Nonnull FDBRecordStoreBase.StoreExistenceCheck existenceCheck) {
    final FDBRecordContext context = recordStore.getContext();
    validateContext(context);
    if (context.hasDirtyStoreState()) {
        recordStore.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_MISS);
        return FDBRecordStoreStateCacheEntry.load(recordStore, existenceCheck);
    }
    final SubspaceProvider subspaceProvider = recordStore.getSubspaceProvider();
    final FDBRecordStoreStateCacheEntry existingEntry = cache.getIfPresent(subspaceProvider);
    if (existingEntry == null) {
        recordStore.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_MISS);
        return FDBRecordStoreStateCacheEntry.load(recordStore, existenceCheck).whenComplete((cacheEntry, err) -> {
            if (err == null && cacheEntry.getRecordStoreState().getStoreHeader().getCacheable()) {
                addToCache(subspaceProvider, cacheEntry);
            }
        });
    } else {
        return recordStore.getContext().getMetaDataVersionStampAsync(IsolationLevel.SNAPSHOT).thenCompose(metaDataVersionStamp -> {
            if (metaDataVersionStamp == null || existingEntry.getMetaDataVersionStamp() == null || ByteArrayUtil.compareUnsigned(metaDataVersionStamp, existingEntry.getMetaDataVersionStamp()) != 0) {
                recordStore.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_MISS);
                return FDBRecordStoreStateCacheEntry.load(recordStore, existenceCheck).whenComplete((cacheEntry, err) -> {
                    if (err == null && metaDataVersionStamp != null) {
                        if (cacheEntry.getRecordStoreState().getStoreHeader().getCacheable()) {
                            addToCache(subspaceProvider, cacheEntry);
                        } else {
                            invalidateOlderEntry(subspaceProvider, metaDataVersionStamp);
                        }
                    }
                });
            } else {
                recordStore.increment(FDBStoreTimer.Counts.STORE_STATE_CACHE_HIT);
                return existingEntry.handleCachedState(context, existenceCheck).thenApply(ignore -> existingEntry);
            }
        });
    }
}