Examples with InMemorySnapshotInfoStore io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore used on opensource projects

Example 6 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleBootstrapWithMultipleFailoversWithTruncate.

/**
 * Tests a scenario when there are multiple fail overs overs.
 * The test adds a few chunks to the system segments and then fails over.
 * After fail over the zombie instances continue to write junk data to both system segment and journal file.
 * The new instance should read the journal log file and recreate the layout of system segments.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleBootstrapWithMultipleFailoversWithTruncate() throws Exception {
    @Cleanup CleanupHelper cleanupHelper = new CleanupHelper();
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    int containerId = 42;
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 0;
    val policy = new SegmentRollingPolicy(1024);
    val config = getDefaultConfigBuilder(policy).build();
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    long offset = 0;
    long offsetToTruncateAt = 0;
    ChunkedSegmentStorage oldChunkedSegmentStorage = null;
    SegmentHandle oldHandle = null;
    long oldOffset = 0;
    for (int i = 1; i < 10; i++) {
        // Epoch 2
        epoch++;
        ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
        cleanupHelper.add(metadataStoreAfterCrash);
        ChunkedSegmentStorage segmentStorageInLoop = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreAfterCrash, executorService(), config);
        cleanupHelper.add(segmentStorageInLoop);
        segmentStorageInLoop.initialize(epoch);
        segmentStorageInLoop.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
        segmentStorageInLoop.bootstrap(snapshotInfoStore, null).join();
        deleteGarbage(segmentStorageInLoop);
        checkSystemSegmentsLayout(segmentStorageInLoop);
        val h = segmentStorageInLoop.openWrite(systemSegmentName).join();
        if (null != oldChunkedSegmentStorage) {
            // Add some junk to previous instance after failover
            oldChunkedSegmentStorage.write(oldHandle, oldOffset, new ByteArrayInputStream("junk".getBytes()), 4, null).join();
        } else {
            // Only first time.
            for (int j = 1; j < 10; j++) {
                val b0 = "JUNK".getBytes();
                segmentStorageInLoop.write(h, offset, new ByteArrayInputStream(b0), b0.length, null).join();
                offset += b0.length;
            }
        }
        offsetToTruncateAt += 4;
        val b1 = "Test".getBytes();
        segmentStorageInLoop.write(h, offset, new ByteArrayInputStream(b1), b1.length, null).join();
        offset += b1.length;
        val b2 = Integer.toString(i).getBytes();
        segmentStorageInLoop.write(h, offset, new ByteArrayInputStream(b2), b2.length, null).join();
        offset += b2.length;
        segmentStorageInLoop.truncate(h, offsetToTruncateAt, null).join();
        TestUtils.checkSegmentBounds(metadataStoreAfterCrash, h.getSegmentName(), offsetToTruncateAt, offset);
        val length = Math.toIntExact(offset - offsetToTruncateAt);
        byte[] readBytes = new byte[length];
        val bytesRead = segmentStorageInLoop.read(h, offsetToTruncateAt, readBytes, 0, length, null).get();
        Assert.assertEquals(length, readBytes.length);
        String s = new String(readBytes);
        // Add some garbage
        if (null != oldChunkedSegmentStorage) {
            oldChunkedSegmentStorage.write(oldHandle, oldOffset + 4, new ByteArrayInputStream("junk".getBytes()), 4, null).join();
        }
        // Save these instances so that you can write some junk after bootstrap.
        oldChunkedSegmentStorage = segmentStorageInLoop;
        oldHandle = h;
        oldOffset = offset;
    }
    epoch++;
    @Cleanup ChunkMetadataStore metadataStoreFinal = getMetadataStore();
    ChunkedSegmentStorage segmentStorageFinal = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreFinal, executorService(), config);
    cleanupHelper.add(segmentStorageFinal);
    segmentStorageFinal.initialize(epoch);
    segmentStorageFinal.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    segmentStorageFinal.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorageFinal);
    checkSystemSegmentsLayout(segmentStorageFinal);
    val info = segmentStorageFinal.getStreamSegmentInfo(systemSegmentName, null).join();
    Assert.assertEquals(offset, info.getLength());
    Assert.assertEquals(offsetToTruncateAt, info.getStartOffset());
    byte[] out = new byte[Math.toIntExact(offset - offsetToTruncateAt)];
    val hr = segmentStorageFinal.openRead(systemSegmentName).join();
    segmentStorageFinal.read(hr, offsetToTruncateAt, out, 0, Math.toIntExact(offset - offsetToTruncateAt), null).join();
    val expected = "Test1Test2Test3Test4Test5Test6Test7Test8Test9";
    val actual = new String(out);
    Assert.assertEquals(expected, actual);
}

Example 7 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleBootstrapWithTwoFailovers.

/**
 * Tests a scenario when there are two fail overs.
 * The test adds a few chunks to the system segments and then fails over.
 * After fail over the zombie instance continues to write junk data to both system segment and journal file.
 * The new instance should read the journal log file and recreate the layout of system segments.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleBootstrapWithTwoFailovers() throws Exception {
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStoreBeforeCrash = getMetadataStore();
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    int containerId = 42;
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 1;
    val policy = new SegmentRollingPolicy(8);
    val config = getDefaultConfigBuilder(policy).build();
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    long offset = 0;
    // Epoch 1
    @Cleanup ChunkedSegmentStorage segmentStorage1 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreBeforeCrash, executorService(), config);
    segmentStorage1.initialize(epoch);
    segmentStorage1.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage1.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage1);
    checkSystemSegmentsLayout(segmentStorage1);
    // Simulate some writes to system segment, this should cause some new chunks being added.
    val h = segmentStorage1.openWrite(systemSegmentName).join();
    val b1 = "Hello".getBytes();
    segmentStorage1.write(h, offset, new ByteArrayInputStream(b1), b1.length, null).join();
    offset += b1.length;
    checkSystemSegmentsLayout(segmentStorage1);
    // Epoch 2
    epoch++;
    @Cleanup ChunkedSegmentStorage segmentStorage2 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreAfterCrash, executorService(), config);
    segmentStorage2.initialize(epoch);
    segmentStorage2.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage2.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage2);
    checkSystemSegmentsLayout(segmentStorage2);
    val h2 = segmentStorage2.openWrite(systemSegmentName).join();
    // Write Junk Data to from first instance.
    segmentStorage1.write(h, offset, new ByteArrayInputStream("junk".getBytes()), 4, null).join();
    val b2 = " World".getBytes();
    segmentStorage2.write(h2, offset, new ByteArrayInputStream(b2), b2.length, null).join();
    offset += b2.length;
    checkSystemSegmentsLayout(segmentStorage2);
    val info = segmentStorage2.getStreamSegmentInfo(systemSegmentName, null).join();
    Assert.assertEquals(b1.length + b2.length, info.getLength());
    byte[] out = new byte[b1.length + b2.length];
    val hr = segmentStorage2.openRead(systemSegmentName).join();
    segmentStorage2.read(hr, 0, out, 0, b1.length + b2.length, null).join();
    Assert.assertEquals("Hello World", new String(out));
}

Example 8 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSystemSegmentNoConcatAllowed.

@Test
public void testSystemSegmentNoConcatAllowed() throws Exception {
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStore = getMetadataStore();
    int containerId = 42;
    int maxLength = 8;
    long epoch = 1;
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    @Cleanup val garbageCollector = new GarbageCollector(containerId, chunkStorage, metadataStore, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector.initialize(new InMemoryTaskQueueManager()).join();
    val policy = new SegmentRollingPolicy(maxLength);
    val config = getDefaultConfigBuilder(policy).build();
    val journal = new SystemJournal(containerId, chunkStorage, metadataStore, garbageCollector, config, executorService());
    val systemSegmentName = NameUtils.getAttributeSegmentName(NameUtils.getMetadataSegmentName(containerId));
    Assert.assertTrue(journal.isStorageSystemSegment(systemSegmentName));
    // Init
    long offset = 0;
    // Start container with epoch 1
    @Cleanup ChunkedSegmentStorage segmentStorage = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStore, executorService(), config);
    segmentStorage.initialize(epoch);
    segmentStorage.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    segmentStorage.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage);
    segmentStorage.create("test", null).get();
    AssertExtensions.assertFutureThrows("concat() should throw", segmentStorage.concat(SegmentStorageHandle.writeHandle(systemSegmentName), 0, "test", null), ex -> ex instanceof IllegalStateException);
    AssertExtensions.assertFutureThrows("concat() should throw", segmentStorage.concat(SegmentStorageHandle.writeHandle("test"), 0, systemSegmentName, null), ex -> ex instanceof IllegalStateException);
}

Example 9 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleBootstrapWithMultipleFailovers.

private void testSimpleBootstrapWithMultipleFailovers(int containerId, ChunkStorage chunkStorage, ChunkedSegmentStorageConfig config, Consumer<Long> faultInjection) throws Exception {
    @Cleanup CleanupHelper cleanupHelper = new CleanupHelper();
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 0;
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    long offset = 0;
    ChunkedSegmentStorage oldChunkedSegmentStorage = null;
    SegmentHandle oldHandle = null;
    for (int i = 1; i < 10; i++) {
        // Epoch 2
        epoch++;
        ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
        cleanupHelper.add(metadataStoreAfterCrash);
        ChunkedSegmentStorage segmentStorageInLoop = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreAfterCrash, executorService(), config);
        cleanupHelper.add(segmentStorageInLoop);
        segmentStorageInLoop.initialize(epoch);
        segmentStorageInLoop.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
        segmentStorageInLoop.bootstrap(snapshotInfoStore, null).join();
        deleteGarbage(segmentStorageInLoop);
        checkSystemSegmentsLayout(segmentStorageInLoop);
        val h = segmentStorageInLoop.openWrite(systemSegmentName).join();
        if (null != oldChunkedSegmentStorage) {
            oldChunkedSegmentStorage.write(oldHandle, offset, new ByteArrayInputStream("junk".getBytes()), 4, null).join();
        }
        val b1 = "Test".getBytes();
        segmentStorageInLoop.write(h, offset, new ByteArrayInputStream(b1), b1.length, null).join();
        offset += b1.length;
        val b2 = Integer.toString(i).getBytes();
        segmentStorageInLoop.write(h, offset, new ByteArrayInputStream(b2), b2.length, null).join();
        offset += b2.length;
        oldChunkedSegmentStorage = segmentStorageInLoop;
        oldHandle = h;
    }
    if (null != faultInjection) {
        faultInjection.accept(epoch);
    }
    epoch++;
    @Cleanup ChunkMetadataStore metadataStoreFinal = getMetadataStore();
    @Cleanup ChunkedSegmentStorage segmentStorageFinal = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreFinal, executorService(), config);
    segmentStorageFinal.initialize(epoch);
    segmentStorageFinal.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    segmentStorageFinal.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorageFinal);
    checkSystemSegmentsLayout(segmentStorageFinal);
    val info = segmentStorageFinal.getStreamSegmentInfo(systemSegmentName, null).join();
    Assert.assertEquals(offset, info.getLength());
    byte[] out = new byte[Math.toIntExact(offset)];
    val hr = segmentStorageFinal.openRead(systemSegmentName).join();
    segmentStorageFinal.read(hr, 0, out, 0, Math.toIntExact(offset), null).join();
    val expected = "Test1Test2Test3Test4Test5Test6Test7Test8Test9";
    val actual = new String(out);
    Assert.assertEquals(expected, actual);
}

Example 10 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleBootstrapWithPartialDataWrite.

/**
 * Tests a scenario when journal chunks may be partially written during failure.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleBootstrapWithPartialDataWrite() throws Exception {
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    if (!chunkStorage.supportsAppend()) {
        return;
    }
    @Cleanup ChunkMetadataStore metadataStore = getMetadataStore();
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    int containerId = 42;
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 1;
    val policy = new SegmentRollingPolicy(4);
    val config = getDefaultConfigBuilder(policy).build();
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    long offset = 0;
    // Epoch 1
    @Cleanup ChunkedSegmentStorage segmentStorage1 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStore, executorService(), config);
    segmentStorage1.initialize(epoch);
    segmentStorage1.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage1.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage1);
    checkSystemSegmentsLayout(segmentStorage1);
    // Simulate some writes to system segment, this should cause some new chunks being added.
    val h = segmentStorage1.openWrite(systemSegmentName).join();
    val b1 = "Hello".getBytes();
    segmentStorage1.write(h, offset, new ByteArrayInputStream(b1), b1.length, null).join();
    offset += b1.length;
    // Inject a fault by adding some garbage at the end
    checkSystemSegmentsLayout(segmentStorage1);
    val chunkFileName = NameUtils.getSystemJournalFileName(segmentStorage1.getSystemJournal().getContainerId(), segmentStorage1.getSystemJournal().getEpoch(), segmentStorage1.getSystemJournal().getCurrentFileIndex().get());
    val chunkInfo = chunkStorage.getInfo(chunkFileName);
    chunkStorage.write(ChunkHandle.writeHandle(chunkFileName), chunkInfo.get().getLength(), 1, new ByteArrayInputStream(new byte[1])).get();
    // This next write will encounter partially written chunk and is expected to start a new chunk.
    val b2 = " World".getBytes();
    segmentStorage1.write(h, offset, new ByteArrayInputStream(b2), b2.length, null).join();
    offset += b2.length;
    checkSystemSegmentsLayout(segmentStorage1);
    // Step 2
    // Start container with epoch 2
    epoch++;
    @Cleanup ChunkedSegmentStorage segmentStorage2 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreAfterCrash, executorService(), config);
    segmentStorage2.initialize(epoch);
    segmentStorage2.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage2.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage2);
    checkSystemSegmentsLayout(segmentStorage2);
    // Validate
    val info = segmentStorage2.getStreamSegmentInfo(systemSegmentName, null).join();
    Assert.assertEquals(b1.length + b2.length, info.getLength());
    byte[] out = new byte[b1.length + b2.length];
    val hr = segmentStorage2.openRead(systemSegmentName).join();
    segmentStorage2.read(hr, 0, out, 0, b1.length + b2.length, null).join();
    Assert.assertEquals("Hello World", new String(out));
}