Examples with RecordBatchingStateRestoreCallback org.apache.kafka.streams.processor.internals.RecordBatchingStateRestoreCallback used on opensource projects

Example 11 with RecordBatchingStateRestoreCallback

use of org.apache.kafka.streams.processor.internals.RecordBatchingStateRestoreCallback in project kafka by apache.

the class TimeOrderedKeyValueBufferTest method shouldRestoreV3FormatWithV2Header.

@Test
public void shouldRestoreV3FormatWithV2Header() {
    // versions 2.4.0, 2.4.1, and 2.5.0 would have erroneously encoded a V3 record with the
    // V2 header, so we need to be sure to handle this case as well.
    // Note the data is the same as the V3 test.
    final TimeOrderedKeyValueBuffer<String, String> buffer = bufferSupplier.apply(testName);
    final MockInternalProcessorContext context = makeContext();
    buffer.init((StateStoreContext) context, buffer);
    final RecordBatchingStateRestoreCallback stateRestoreCallback = (RecordBatchingStateRestoreCallback) context.stateRestoreCallback(testName);
    context.setRecordContext(new ProcessorRecordContext(0, 0, 0, "", new RecordHeaders()));
    final RecordHeaders headers = new RecordHeaders(new Header[] { new RecordHeader("v", new byte[] { (byte) 2 }) });
    // These serialized formats were captured by running version 2.4 code.
    // They verify that an upgrade from 2.4 will work.
    // Do not change them.
    final String toDeleteBinary = "0000000000000000000000000000000000000005746F70696300000000FFFFFFFFFFFFFFFFFFFFFFFF00000006646F6F6D65640000000000000000";
    final String asdfBinary = "0000000000000001000000000000000000000005746F70696300000000FFFFFFFFFFFFFFFFFFFFFFFF00000004717765720000000000000002";
    final String zxcvBinary1 = "0000000000000002000000000000000000000005746F70696300000000FFFFFFFF0000000870726576696F75730000000749474E4F52454400000005336F34696D0000000000000001";
    final String zxcvBinary2 = "0000000000000003000000000000000000000005746F70696300000000FFFFFFFF0000000870726576696F757300000005336F34696D000000046E6578740000000000000001";
    stateRestoreCallback.restoreBatch(asList(new ConsumerRecord<>("changelog-topic", 0, 0, 999, TimestampType.CREATE_TIME, -1, -1, "todelete".getBytes(UTF_8), hexStringToByteArray(toDeleteBinary), headers, Optional.empty()), new ConsumerRecord<>("changelog-topic", 0, 1, 9999, TimestampType.CREATE_TIME, -1, -1, "asdf".getBytes(UTF_8), hexStringToByteArray(asdfBinary), headers, Optional.empty()), new ConsumerRecord<>("changelog-topic", 0, 2, 99, TimestampType.CREATE_TIME, -1, -1, "zxcv".getBytes(UTF_8), hexStringToByteArray(zxcvBinary1), headers, Optional.empty()), new ConsumerRecord<>("changelog-topic", 0, 2, 100, TimestampType.CREATE_TIME, -1, -1, "zxcv".getBytes(UTF_8), hexStringToByteArray(zxcvBinary2), headers, Optional.empty())));
    assertThat(buffer.numRecords(), is(3));
    assertThat(buffer.minTimestamp(), is(0L));
    assertThat(buffer.bufferSize(), is(142L));
    stateRestoreCallback.restoreBatch(singletonList(new ConsumerRecord<>("changelog-topic", 0, 3, 3, TimestampType.CREATE_TIME, -1, -1, "todelete".getBytes(UTF_8), null, new RecordHeaders(), Optional.empty())));
    assertThat(buffer.numRecords(), is(2));
    assertThat(buffer.minTimestamp(), is(1L));
    assertThat(buffer.bufferSize(), is(95L));
    assertThat(buffer.priorValueForBuffered("todelete"), is(Maybe.undefined()));
    assertThat(buffer.priorValueForBuffered("asdf"), is(Maybe.defined(null)));
    assertThat(buffer.priorValueForBuffered("zxcv"), is(Maybe.defined(ValueAndTimestamp.make("previous", -1))));
    // flush the buffer into a list in buffer order so we can make assertions about the contents.
    final List<Eviction<String, String>> evicted = new LinkedList<>();
    buffer.evictWhile(() -> true, evicted::add);
    // Several things to note:
    // * The buffered records are ordered according to their buffer time (serialized in the value of the changelog)
    // * The record timestamps are properly restored, and not conflated with the record's buffer time.
    // * The keys and values are properly restored
    // * The record topic is set to the original input topic, *not* the changelog topic
    // * The record offset preserves the original input record's offset, *not* the offset of the changelog record
    assertThat(evicted, is(asList(new Eviction<>("zxcv", new Change<>("next", "3o4im"), getContext(3L)), new Eviction<>("asdf", new Change<>("qwer", null), getContext(1L)))));
    cleanup(context, buffer);
}

Example 12 with RecordBatchingStateRestoreCallback

use of org.apache.kafka.streams.processor.internals.RecordBatchingStateRestoreCallback in project kafka by apache.

the class InternalMockProcessorContext method restoreWithHeaders.

public void restoreWithHeaders(final String storeName, final List<ConsumerRecord<byte[], byte[]>> changeLog) {
    final RecordBatchingStateRestoreCallback restoreCallback = adapt(restoreFuncs.get(storeName));
    restoreCallback.restoreBatch(changeLog);
}