| /* |
| * 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.sdk.java.storage; |
| |
| import static org.apache.flink.statefun.sdk.java.storage.StateValueContexts.StateValueContext; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.core.Is.is; |
| import static org.hamcrest.core.IsCollectionContaining.hasItem; |
| |
| import com.google.protobuf.ByteString; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import org.apache.flink.statefun.sdk.java.ValueSpec; |
| import org.apache.flink.statefun.sdk.java.types.Type; |
| import org.apache.flink.statefun.sdk.java.types.Types; |
| import org.apache.flink.statefun.sdk.reqreply.generated.ToFunction; |
| import org.apache.flink.statefun.sdk.reqreply.generated.TypedValue; |
| import org.hamcrest.Description; |
| import org.hamcrest.Matcher; |
| import org.hamcrest.Matchers; |
| import org.hamcrest.TypeSafeDiagnosingMatcher; |
| import org.hamcrest.TypeSafeMatcher; |
| import org.junit.Test; |
| |
| public final class StateValueContextsTest { |
| |
| @Test |
| public void exampleUsage() { |
| final Map<String, ValueSpec<?>> registeredSpecs = new HashMap<>(2); |
| registeredSpecs.put("state-1", ValueSpec.named("state-1").withIntType()); |
| registeredSpecs.put("state-2", ValueSpec.named("state-2").withBooleanType()); |
| |
| final List<ToFunction.PersistedValue> providedProtocolValues = new ArrayList<>(2); |
| providedProtocolValues.add(protocolValue("state-1", Types.integerType(), 66)); |
| providedProtocolValues.add(protocolValue("state-2", Types.booleanType(), true)); |
| |
| final List<StateValueContext<?>> resolvedStateValues = |
| StateValueContexts.resolve(registeredSpecs, providedProtocolValues).resolved(); |
| |
| assertThat(resolvedStateValues.size(), is(2)); |
| assertThat(resolvedStateValues, hasItem(stateValueContextNamed("state-1"))); |
| assertThat(resolvedStateValues, hasItem(stateValueContextNamed("state-2"))); |
| } |
| |
| @Test |
| public void missingProtocolValues() { |
| final Map<String, ValueSpec<?>> registeredSpecs = new HashMap<>(3); |
| registeredSpecs.put("state-1", ValueSpec.named("state-1").withIntType()); |
| registeredSpecs.put("state-2", ValueSpec.named("state-2").withBooleanType()); |
| registeredSpecs.put("state-3", ValueSpec.named("state-3").withUtf8String()); |
| |
| // only value for state-2 was provided |
| final List<ToFunction.PersistedValue> providedProtocolValues = new ArrayList<>(1); |
| providedProtocolValues.add(protocolValue("state-2", Types.booleanType(), true)); |
| |
| final List<ValueSpec<?>> statesWithMissingValue = |
| StateValueContexts.resolve(registeredSpecs, providedProtocolValues).missingValues(); |
| |
| assertThat(statesWithMissingValue.size(), is(2)); |
| assertThat(statesWithMissingValue, hasItem(valueSpec("state-1", Types.integerType()))); |
| assertThat(statesWithMissingValue, hasItem(valueSpec("state-3", Types.stringType()))); |
| } |
| |
| @Test |
| public void extraProtocolValues() { |
| final Map<String, ValueSpec<?>> registeredSpecs = new HashMap<>(1); |
| registeredSpecs.put("state-1", ValueSpec.named("state-1").withIntType()); |
| |
| // a few extra states were provided, and should be ignored |
| final List<ToFunction.PersistedValue> providedProtocolValues = new ArrayList<>(3); |
| providedProtocolValues.add(protocolValue("state-1", Types.integerType(), 66)); |
| providedProtocolValues.add(protocolValue("state-2", Types.booleanType(), true)); |
| providedProtocolValues.add(protocolValue("state-3", Types.stringType(), "ignore me!")); |
| |
| final List<StateValueContext<?>> resolvedStateValues = |
| StateValueContexts.resolve(registeredSpecs, providedProtocolValues).resolved(); |
| |
| assertThat(resolvedStateValues.size(), is(1)); |
| ValueSpec<?> spec = resolvedStateValues.get(0).spec(); |
| assertThat(spec.name(), Matchers.is("state-1")); |
| } |
| |
| private static <T> ToFunction.PersistedValue protocolValue( |
| String stateName, Type<T> type, T value) { |
| return ToFunction.PersistedValue.newBuilder() |
| .setStateName(stateName) |
| .setStateValue( |
| TypedValue.newBuilder() |
| .setTypename(type.typeName().asTypeNameString()) |
| .setHasValue(value != null) |
| .setValue(toByteString(type, value))) |
| .build(); |
| } |
| |
| private static <T> ByteString toByteString(Type<T> type, T value) { |
| if (value == null) { |
| return ByteString.EMPTY; |
| } |
| return ByteString.copyFrom(type.typeSerializer().serialize(value).toByteArray()); |
| } |
| |
| private static <T> Matcher<ValueSpec<T>> valueSpec(String stateName, Type<T> type) { |
| return new TypeSafeMatcher<ValueSpec<T>>() { |
| @Override |
| protected boolean matchesSafely(ValueSpec<T> testSpec) { |
| return testSpec.type().getClass() == type.getClass() && testSpec.name().equals(stateName); |
| } |
| |
| @Override |
| public void describeTo(Description description) {} |
| }; |
| } |
| |
| private static <T> Matcher<StateValueContext<T>> stateValueContextNamed(String name) { |
| return new TypeSafeDiagnosingMatcher<StateValueContext<T>>() { |
| @Override |
| protected boolean matchesSafely(StateValueContext<T> ctx, Description description) { |
| if (!Objects.equals(ctx.spec().name(), name)) { |
| description.appendText(ctx.spec().name()); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public void describeTo(Description description) { |
| description.appendText("A StateValueContext named ").appendText(name); |
| } |
| }; |
| } |
| } |