use of org.apache.flink.queryablestate.server.KvStateServerHandler in project flink by apache.
the class KvStateServerHandlerTest method testUnexpectedMessage.
/**
* Tests response on unexpected messages.
*/
@Test
public void testUnexpectedMessage() throws Exception {
KvStateRegistry registry = new KvStateRegistry();
AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer());
KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats);
EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
// Write the request and wait for the response
ByteBuf unexpectedMessage = Unpooled.buffer(8);
unexpectedMessage.writeInt(4);
unexpectedMessage.writeInt(123238213);
channel.writeInbound(unexpectedMessage);
ByteBuf buf = (ByteBuf) readInboundBlocking(channel);
// skip frame length
buf.skipBytes(4);
// Verify the response
assertEquals(MessageType.SERVER_FAILURE, MessageSerializer.deserializeHeader(buf));
Throwable response = MessageSerializer.deserializeServerFailure(buf);
buf.release();
assertEquals(0L, stats.getNumRequests());
assertEquals(0L, stats.getNumFailed());
KvStateResponse stateResponse = new KvStateResponse(new byte[0]);
unexpectedMessage = MessageSerializer.serializeResponse(channel.alloc(), 192L, stateResponse);
channel.writeInbound(unexpectedMessage);
buf = (ByteBuf) readInboundBlocking(channel);
// skip frame length
buf.skipBytes(4);
// Verify the response
assertEquals(MessageType.SERVER_FAILURE, MessageSerializer.deserializeHeader(buf));
response = MessageSerializer.deserializeServerFailure(buf);
buf.release();
assertTrue("Unexpected failure cause " + response.getClass().getName(), response instanceof IllegalArgumentException);
assertEquals(0L, stats.getNumRequests());
assertEquals(0L, stats.getNumFailed());
}
use of org.apache.flink.queryablestate.server.KvStateServerHandler in project flink by apache.
the class KvStateServerHandlerTest method testSimpleQuery.
/**
* Tests a simple successful query via an EmbeddedChannel.
*/
@Test
public void testSimpleQuery() throws Exception {
KvStateRegistry registry = new KvStateRegistry();
AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer());
KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats);
EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
// Register state
ValueStateDescriptor<Integer> desc = new ValueStateDescriptor<>("any", IntSerializer.INSTANCE);
desc.setQueryable("vanilla");
int numKeyGroups = 1;
AbstractStateBackend abstractBackend = new MemoryStateBackend();
DummyEnvironment dummyEnv = new DummyEnvironment("test", 1, 0);
dummyEnv.setKvStateRegistry(registry);
AbstractKeyedStateBackend<Integer> backend = createKeyedStateBackend(registry, numKeyGroups, abstractBackend, dummyEnv);
final TestRegistryListener registryListener = new TestRegistryListener();
registry.registerListener(dummyEnv.getJobID(), registryListener);
// Update the KvState and request it
int expectedValue = 712828289;
int key = 99812822;
backend.setCurrentKey(key);
ValueState<Integer> state = backend.getPartitionedState(VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE, desc);
state.update(expectedValue);
byte[] serializedKeyAndNamespace = KvStateSerializer.serializeKeyAndNamespace(key, IntSerializer.INSTANCE, VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE);
long requestId = Integer.MAX_VALUE + 182828L;
assertTrue(registryListener.registrationName.equals("vanilla"));
KvStateInternalRequest request = new KvStateInternalRequest(registryListener.kvStateId, serializedKeyAndNamespace);
ByteBuf serRequest = MessageSerializer.serializeRequest(channel.alloc(), requestId, request);
// Write the request and wait for the response
channel.writeInbound(serRequest);
ByteBuf buf = (ByteBuf) readInboundBlocking(channel);
// skip frame length
buf.skipBytes(4);
// Verify the response
assertEquals(MessageType.REQUEST_RESULT, MessageSerializer.deserializeHeader(buf));
long deserRequestId = MessageSerializer.getRequestId(buf);
KvStateResponse response = serializer.deserializeResponse(buf);
buf.release();
assertEquals(requestId, deserRequestId);
int actualValue = KvStateSerializer.deserializeValue(response.getContent(), IntSerializer.INSTANCE);
assertEquals(expectedValue, actualValue);
assertEquals(stats.toString(), 1, stats.getNumRequests());
// Wait for async successful request report
long deadline = System.nanoTime() + TimeUnit.NANOSECONDS.convert(30, TimeUnit.SECONDS);
while (stats.getNumSuccessful() != 1L && System.nanoTime() <= deadline) {
Thread.sleep(10L);
}
assertEquals(stats.toString(), 1L, stats.getNumSuccessful());
}
use of org.apache.flink.queryablestate.server.KvStateServerHandler in project flink by apache.
the class KvStateServerHandlerTest method testFailureOnGetSerializedValue.
/**
* Tests the failure response on a failure on the {@link
* InternalKvState#getSerializedValue(byte[], TypeSerializer, TypeSerializer, TypeSerializer)}
* call.
*/
@Test
public void testFailureOnGetSerializedValue() throws Exception {
KvStateRegistry registry = new KvStateRegistry();
AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer());
KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats);
EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
// Failing KvState
InternalKvState<Integer, VoidNamespace, Long> kvState = new InternalKvState<Integer, VoidNamespace, Long>() {
@Override
public TypeSerializer<Integer> getKeySerializer() {
return IntSerializer.INSTANCE;
}
@Override
public TypeSerializer<VoidNamespace> getNamespaceSerializer() {
return VoidNamespaceSerializer.INSTANCE;
}
@Override
public TypeSerializer<Long> getValueSerializer() {
return LongSerializer.INSTANCE;
}
@Override
public void setCurrentNamespace(VoidNamespace namespace) {
// do nothing
}
@Override
public byte[] getSerializedValue(final byte[] serializedKeyAndNamespace, final TypeSerializer<Integer> safeKeySerializer, final TypeSerializer<VoidNamespace> safeNamespaceSerializer, final TypeSerializer<Long> safeValueSerializer) throws Exception {
throw new RuntimeException("Expected test Exception");
}
@Override
public StateIncrementalVisitor<Integer, VoidNamespace, Long> getStateIncrementalVisitor(int recommendedMaxNumberOfReturnedRecords) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
}
};
KvStateID kvStateId = registry.registerKvState(new JobID(), new JobVertexID(), new KeyGroupRange(0, 0), "vanilla", kvState, getClass().getClassLoader());
KvStateInternalRequest request = new KvStateInternalRequest(kvStateId, new byte[0]);
ByteBuf serRequest = MessageSerializer.serializeRequest(channel.alloc(), 282872L, request);
// Write the request and wait for the response
channel.writeInbound(serRequest);
ByteBuf buf = (ByteBuf) readInboundBlocking(channel);
// skip frame length
buf.skipBytes(4);
// Verify the response
assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf));
RequestFailure response = MessageSerializer.deserializeRequestFailure(buf);
buf.release();
assertTrue(response.getCause().getMessage().contains("Expected test Exception"));
assertEquals(1L, stats.getNumRequests());
assertEquals(1L, stats.getNumFailed());
}
use of org.apache.flink.queryablestate.server.KvStateServerHandler in project flink by apache.
the class KvStateServerHandlerTest method testQueryUnknownKvStateID.
/**
* Tests the failure response with {@link UnknownKvStateIdException} as cause on queries for
* unregistered KvStateIDs.
*/
@Test
public void testQueryUnknownKvStateID() throws Exception {
KvStateRegistry registry = new KvStateRegistry();
AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer());
KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats);
EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
long requestId = Integer.MAX_VALUE + 182828L;
KvStateInternalRequest request = new KvStateInternalRequest(new KvStateID(), new byte[0]);
ByteBuf serRequest = MessageSerializer.serializeRequest(channel.alloc(), requestId, request);
// Write the request and wait for the response
channel.writeInbound(serRequest);
ByteBuf buf = (ByteBuf) readInboundBlocking(channel);
// skip frame length
buf.skipBytes(4);
// Verify the response
assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf));
RequestFailure response = MessageSerializer.deserializeRequestFailure(buf);
buf.release();
assertEquals(requestId, response.getRequestId());
assertTrue("Did not respond with expected failure cause", response.getCause() instanceof UnknownKvStateIdException);
assertEquals(1L, stats.getNumRequests());
assertEquals(1L, stats.getNumFailed());
}
use of org.apache.flink.queryablestate.server.KvStateServerHandler in project flink by apache.
the class KvStateServerHandlerTest method testIncomingBufferIsRecycled.
/**
* Tests that incoming buffer instances are recycled.
*/
@Test
public void testIncomingBufferIsRecycled() throws Exception {
KvStateRegistry registry = new KvStateRegistry();
AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer());
KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats);
EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
KvStateInternalRequest request = new KvStateInternalRequest(new KvStateID(), new byte[0]);
ByteBuf serRequest = MessageSerializer.serializeRequest(channel.alloc(), 282872L, request);
assertEquals(1L, serRequest.refCnt());
// Write regular request
channel.writeInbound(serRequest);
assertEquals("Buffer not recycled", 0L, serRequest.refCnt());
// Write unexpected msg
ByteBuf unexpected = channel.alloc().buffer(8);
unexpected.writeInt(4);
unexpected.writeInt(4);
assertEquals(1L, unexpected.refCnt());
channel.writeInbound(unexpected);
assertEquals("Buffer not recycled", 0L, unexpected.refCnt());
channel.finishAndReleaseAll();
}
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