| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.flink.statefun.flink.core.reqreply; |
| |
| import static org.hamcrest.CoreMatchers.hasItems; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.core.Is.is; |
| |
| import com.google.protobuf.ByteString; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import org.apache.flink.statefun.flink.core.polyglot.generated.FromFunction.PersistedValueMutation; |
| import org.apache.flink.statefun.flink.core.polyglot.generated.FromFunction.PersistedValueSpec; |
| import org.apache.flink.statefun.flink.core.polyglot.generated.ToFunction.InvocationBatchRequest; |
| import org.apache.flink.statefun.flink.core.polyglot.generated.ToFunction.PersistedValue; |
| import org.junit.Test; |
| |
| public class PersistedRemoteFunctionValuesTest { |
| |
| @Test |
| public void exampleUsage() { |
| final PersistedRemoteFunctionValues values = new PersistedRemoteFunctionValues(); |
| |
| // --- register persisted states |
| values.registerStates( |
| Arrays.asList( |
| protocolPersistedValueSpec("state-1"), protocolPersistedValueSpec("state-2"))); |
| |
| // --- update state values |
| values.updateStateValues( |
| Arrays.asList( |
| protocolPersistedValueModifyMutation("state-1", ByteString.copyFromUtf8("data-1")), |
| protocolPersistedValueModifyMutation("state-2", ByteString.copyFromUtf8("data-2")))); |
| |
| final InvocationBatchRequest.Builder builder = InvocationBatchRequest.newBuilder(); |
| values.attachStateValues(builder); |
| |
| // --- registered state names and their values should be attached |
| assertThat(builder.getStateList().size(), is(2)); |
| assertThat( |
| builder.getStateList(), |
| hasItems( |
| protocolPersistedValue("state-1", ByteString.copyFromUtf8("data-1")), |
| protocolPersistedValue("state-2", ByteString.copyFromUtf8("data-2")))); |
| } |
| |
| @Test |
| public void zeroRegisteredStates() { |
| final PersistedRemoteFunctionValues values = new PersistedRemoteFunctionValues(); |
| |
| final InvocationBatchRequest.Builder builder = InvocationBatchRequest.newBuilder(); |
| values.attachStateValues(builder); |
| |
| assertThat(builder.getStateList().size(), is(0)); |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void updatingNonRegisteredStateShouldThrow() { |
| final PersistedRemoteFunctionValues values = new PersistedRemoteFunctionValues(); |
| |
| values.updateStateValues( |
| Collections.singletonList( |
| protocolPersistedValueModifyMutation( |
| "non-registered-state", ByteString.copyFromUtf8("data")))); |
| } |
| |
| @Test |
| public void registeredStateWithEmptyValueShouldBeAttached() { |
| final PersistedRemoteFunctionValues values = new PersistedRemoteFunctionValues(); |
| |
| values.registerStates(Collections.singletonList(protocolPersistedValueSpec("state"))); |
| |
| final InvocationBatchRequest.Builder builder = InvocationBatchRequest.newBuilder(); |
| values.attachStateValues(builder); |
| |
| assertThat(builder.getStateList().size(), is(1)); |
| assertThat(builder.getStateList(), hasItems(protocolPersistedValue("state", null))); |
| } |
| |
| @Test |
| public void registeredStateWithDeletedValueShouldBeAttached() { |
| final PersistedRemoteFunctionValues values = new PersistedRemoteFunctionValues(); |
| |
| values.registerStates(Collections.singletonList(protocolPersistedValueSpec("state"))); |
| |
| // modify and then delete state value |
| values.updateStateValues( |
| Collections.singletonList( |
| protocolPersistedValueModifyMutation("state", ByteString.copyFromUtf8("data")))); |
| values.updateStateValues( |
| Collections.singletonList(protocolPersistedValueDeleteMutation("state"))); |
| |
| final InvocationBatchRequest.Builder builder = InvocationBatchRequest.newBuilder(); |
| values.attachStateValues(builder); |
| |
| assertThat(builder.getStateList().size(), is(1)); |
| assertThat(builder.getStateList(), hasItems(protocolPersistedValue("state", null))); |
| } |
| |
| @Test |
| public void duplicateRegistrationsHasNoEffect() { |
| final PersistedRemoteFunctionValues values = new PersistedRemoteFunctionValues(); |
| |
| values.registerStates(Collections.singletonList(protocolPersistedValueSpec("state"))); |
| values.updateStateValues( |
| Collections.singletonList( |
| protocolPersistedValueModifyMutation("state", ByteString.copyFromUtf8("data")))); |
| |
| // duplicate registration under the same state name |
| values.registerStates(Collections.singletonList(protocolPersistedValueSpec("state"))); |
| |
| final InvocationBatchRequest.Builder builder = InvocationBatchRequest.newBuilder(); |
| values.attachStateValues(builder); |
| |
| assertThat(builder.getStateList().size(), is(1)); |
| assertThat( |
| builder.getStateList(), |
| hasItems(protocolPersistedValue("state", ByteString.copyFromUtf8("data")))); |
| } |
| |
| private static PersistedValueSpec protocolPersistedValueSpec(String stateName) { |
| return PersistedValueSpec.newBuilder().setStateName(stateName).build(); |
| } |
| |
| private static PersistedValueMutation protocolPersistedValueModifyMutation( |
| String stateName, ByteString modifyValue) { |
| return PersistedValueMutation.newBuilder() |
| .setStateName(stateName) |
| .setMutationType(PersistedValueMutation.MutationType.MODIFY) |
| .setStateValue(modifyValue) |
| .build(); |
| } |
| |
| private static PersistedValueMutation protocolPersistedValueDeleteMutation(String stateName) { |
| return PersistedValueMutation.newBuilder() |
| .setStateName(stateName) |
| .setMutationType(PersistedValueMutation.MutationType.DELETE) |
| .build(); |
| } |
| |
| private static PersistedValue protocolPersistedValue(String stateName, ByteString stateValue) { |
| final PersistedValue.Builder builder = PersistedValue.newBuilder(); |
| builder.setStateName(stateName); |
| |
| if (stateValue != null) { |
| builder.setStateValue(stateValue); |
| } |
| return builder.build(); |
| } |
| } |