| /* |
| * 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.api.common.typeutils; |
| |
| import org.apache.flink.api.common.typeutils.base.StringSerializer; |
| import org.apache.flink.core.memory.DataInputDeserializer; |
| import org.apache.flink.core.memory.DataInputView; |
| import org.apache.flink.core.memory.DataOutputSerializer; |
| import org.apache.flink.core.memory.DataOutputView; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| /** |
| * Test suite for the {@link CompositeTypeSerializerSnapshot}. |
| */ |
| public class CompositeTypeSerializerSnapshotTest { |
| |
| // ------------------------------------------------------------------------------------------------ |
| // Scope: tests CompositeTypeSerializerSnapshot#resolveSchemaCompatibility |
| // ------------------------------------------------------------------------------------------------ |
| |
| @Test |
| public void testIncompatiblePrecedence() throws IOException { |
| final String OUTER_CONFIG = "outer-config"; |
| final TypeSerializer<?>[] testNestedSerializers = { |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AFTER_MIGRATION), |
| new NestedSerializer(TargetCompatibility.INCOMPATIBLE), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_WITH_RECONFIGURED_SERIALIZER) |
| }; |
| |
| TypeSerializerSchemaCompatibility<String> compatibility = |
| snapshotCompositeSerializerAndGetSchemaCompatibilityAfterRestore( |
| testNestedSerializers, |
| OUTER_CONFIG, |
| OUTER_CONFIG); |
| |
| Assert.assertTrue(compatibility.isIncompatible()); |
| } |
| |
| @Test |
| public void testCompatibleAfterMigrationPrecedence() throws IOException { |
| final String OUTER_CONFIG = "outer-config"; |
| TypeSerializer<?>[] testNestedSerializers = { |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AFTER_MIGRATION), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_WITH_RECONFIGURED_SERIALIZER), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| }; |
| |
| TypeSerializerSchemaCompatibility<String> compatibility = |
| snapshotCompositeSerializerAndGetSchemaCompatibilityAfterRestore( |
| testNestedSerializers, |
| OUTER_CONFIG, |
| OUTER_CONFIG); |
| |
| Assert.assertTrue(compatibility.isCompatibleAfterMigration()); |
| } |
| |
| @Test |
| public void testCompatibleWithReconfiguredSerializerPrecedence() throws IOException { |
| final String OUTER_CONFIG = "outer-config"; |
| TypeSerializer<?>[] testNestedSerializers = { |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_WITH_RECONFIGURED_SERIALIZER), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| }; |
| |
| TypeSerializerSchemaCompatibility<String> compatibility = |
| snapshotCompositeSerializerAndGetSchemaCompatibilityAfterRestore( |
| testNestedSerializers, |
| OUTER_CONFIG, |
| OUTER_CONFIG); |
| |
| Assert.assertTrue(compatibility.isCompatibleWithReconfiguredSerializer()); |
| |
| TestCompositeTypeSerializer reconfiguredSerializer = |
| (TestCompositeTypeSerializer) compatibility.getReconfiguredSerializer(); |
| TypeSerializer<?>[] reconfiguredNestedSerializers = reconfiguredSerializer.getNestedSerializers(); |
| // nested serializer at index 1 should strictly be a ReconfiguredNestedSerializer |
| Assert.assertTrue(reconfiguredNestedSerializers[0].getClass() == NestedSerializer.class); |
| Assert.assertTrue(reconfiguredNestedSerializers[1].getClass() == ReconfiguredNestedSerializer.class); |
| Assert.assertTrue(reconfiguredNestedSerializers[2].getClass() == NestedSerializer.class); |
| } |
| |
| @Test |
| public void testCompatibleAsIsPrecedence() throws IOException { |
| final String OUTER_CONFIG = "outer-config"; |
| TypeSerializer<?>[] testNestedSerializers = { |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| }; |
| |
| TypeSerializerSchemaCompatibility<String> compatibility = |
| snapshotCompositeSerializerAndGetSchemaCompatibilityAfterRestore( |
| testNestedSerializers, |
| OUTER_CONFIG, |
| OUTER_CONFIG); |
| |
| Assert.assertTrue(compatibility.isCompatibleAsIs()); |
| } |
| |
| @Test |
| public void testOuterSnapshotCompatibilityPrecedence() throws IOException { |
| final String INIT_OUTER_CONFIG = "outer-config"; |
| final String INCOMPAT_OUTER_CONFIG = "incompat-outer-config"; |
| TypeSerializer<?>[] testNestedSerializers = { |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| }; |
| |
| TypeSerializerSchemaCompatibility<String> compatibility = |
| snapshotCompositeSerializerAndGetSchemaCompatibilityAfterRestore( |
| testNestedSerializers, |
| INIT_OUTER_CONFIG, |
| INCOMPAT_OUTER_CONFIG); |
| |
| // even though nested serializers are compatible, incompatibility of the outer |
| // snapshot should have higher precedence in the final result |
| Assert.assertTrue(compatibility.isIncompatible()); |
| } |
| |
| private TypeSerializerSchemaCompatibility<String> snapshotCompositeSerializerAndGetSchemaCompatibilityAfterRestore( |
| TypeSerializer<?>[] testNestedSerializers, |
| String initialOuterConfiguration, |
| String newOuterConfiguration) throws IOException { |
| TestCompositeTypeSerializer testSerializer = |
| new TestCompositeTypeSerializer(initialOuterConfiguration, testNestedSerializers); |
| |
| TypeSerializerSnapshot<String> testSerializerSnapshot = testSerializer.snapshotConfiguration(); |
| |
| DataOutputSerializer out = new DataOutputSerializer(128); |
| TypeSerializerSnapshot.writeVersionedSnapshot(out, testSerializerSnapshot); |
| |
| DataInputDeserializer in = new DataInputDeserializer(out.getCopyOfBuffer()); |
| testSerializerSnapshot = TypeSerializerSnapshot.readVersionedSnapshot( |
| in, Thread.currentThread().getContextClassLoader()); |
| |
| TestCompositeTypeSerializer newTestSerializer = |
| new TestCompositeTypeSerializer(newOuterConfiguration, testNestedSerializers); |
| return testSerializerSnapshot.resolveSchemaCompatibility(newTestSerializer); |
| } |
| |
| // ------------------------------------------------------------------------------------------------ |
| // Scope: tests CompositeTypeSerializerSnapshot#restoreSerializer |
| // ------------------------------------------------------------------------------------------------ |
| |
| @Test |
| public void testRestoreCompositeTypeSerializer() throws IOException { |
| // the target compatibilities of the nested serializers doesn't matter, |
| // because we're only testing the restore serializer |
| TypeSerializer<?>[] testNestedSerializers = { |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AS_IS), |
| new NestedSerializer(TargetCompatibility.INCOMPATIBLE), |
| new NestedSerializer(TargetCompatibility.COMPATIBLE_AFTER_MIGRATION) |
| }; |
| |
| TestCompositeTypeSerializer testSerializer = new TestCompositeTypeSerializer("outer-config", testNestedSerializers); |
| |
| TypeSerializerSnapshot<String> testSerializerSnapshot = testSerializer.snapshotConfiguration(); |
| |
| DataOutputSerializer out = new DataOutputSerializer(128); |
| TypeSerializerSnapshot.writeVersionedSnapshot(out, testSerializerSnapshot); |
| |
| DataInputDeserializer in = new DataInputDeserializer(out.getCopyOfBuffer()); |
| testSerializerSnapshot = TypeSerializerSnapshot.readVersionedSnapshot( |
| in, Thread.currentThread().getContextClassLoader()); |
| |
| // now, restore the composite type serializer; |
| // the restored nested serializer should be a RestoredNestedSerializer |
| testSerializer = (TestCompositeTypeSerializer) testSerializerSnapshot.restoreSerializer(); |
| Assert.assertTrue(testSerializer.getNestedSerializers()[0].getClass() == RestoredNestedSerializer.class); |
| Assert.assertTrue(testSerializer.getNestedSerializers()[1].getClass() == RestoredNestedSerializer.class); |
| Assert.assertTrue(testSerializer.getNestedSerializers()[2].getClass() == RestoredNestedSerializer.class); |
| } |
| |
| // ------------------------------------------------------------------------------------------------ |
| // Test utilities |
| // ------------------------------------------------------------------------------------------------ |
| |
| /** |
| * A simple composite serializer used for testing. |
| * It can be configured with an array of nested serializers, as well as outer configuration (represented as String). |
| */ |
| public static class TestCompositeTypeSerializer extends TypeSerializer<String> { |
| |
| private static final long serialVersionUID = -545688468997398105L; |
| |
| private static final StringSerializer delegateSerializer = StringSerializer.INSTANCE; |
| |
| private final String outerConfiguration; |
| |
| private final TypeSerializer<?>[] nestedSerializers; |
| |
| TestCompositeTypeSerializer( |
| String outerConfiguration, |
| TypeSerializer<?>[] nestedSerializers) { |
| this.outerConfiguration = outerConfiguration; |
| this.nestedSerializers = nestedSerializers; |
| } |
| |
| public String getOuterConfiguration() { |
| return outerConfiguration; |
| } |
| |
| TypeSerializer<?>[] getNestedSerializers() { |
| return nestedSerializers; |
| } |
| |
| @Override |
| public TypeSerializerSnapshot<String> snapshotConfiguration() { |
| return new TestCompositeTypeSerializerSnapshot(this); |
| } |
| |
| // -------------------------------------------------------------------------------- |
| // Serialization delegation |
| // -------------------------------------------------------------------------------- |
| |
| @Override |
| public String deserialize(String reuse, DataInputView source) throws IOException { |
| return delegateSerializer.deserialize(reuse, source); |
| } |
| |
| @Override |
| public String deserialize(DataInputView source) throws IOException { |
| return delegateSerializer.deserialize(source); |
| } |
| |
| @Override |
| public void serialize(String record, DataOutputView target) throws IOException { |
| delegateSerializer.serialize(record, target); |
| } |
| |
| @Override |
| public void copy(DataInputView source, DataOutputView target) throws IOException { |
| delegateSerializer.copy(source, target); |
| } |
| |
| @Override |
| public String copy(String from) { |
| return delegateSerializer.copy(from); |
| } |
| |
| @Override |
| public String copy(String from, String reuse) { |
| return delegateSerializer.copy(from, reuse); |
| } |
| |
| @Override |
| public String createInstance() { |
| return delegateSerializer.createInstance(); |
| } |
| |
| @Override |
| public TypeSerializer<String> duplicate() { |
| return this; |
| } |
| |
| @Override |
| public boolean isImmutableType() { |
| return false; |
| } |
| |
| @Override |
| public int getLength() { |
| return 0; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (canEqual(obj)) { |
| return Arrays.equals(nestedSerializers, ((TestCompositeTypeSerializer) obj).getNestedSerializers()); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Arrays.hashCode(nestedSerializers); |
| } |
| |
| @Override |
| public boolean canEqual(Object obj) { |
| return obj instanceof TestCompositeTypeSerializer; |
| } |
| } |
| |
| /** |
| * Snapshot class for the {@link TestCompositeTypeSerializer}. |
| */ |
| public static class TestCompositeTypeSerializerSnapshot extends CompositeTypeSerializerSnapshot<String, TestCompositeTypeSerializer> { |
| |
| private String outerConfiguration; |
| |
| public TestCompositeTypeSerializerSnapshot() { |
| super(TestCompositeTypeSerializer.class); |
| } |
| |
| TestCompositeTypeSerializerSnapshot(TestCompositeTypeSerializer serializer) { |
| super(serializer); |
| this.outerConfiguration = serializer.getOuterConfiguration(); |
| } |
| |
| @Override |
| protected TestCompositeTypeSerializer createOuterSerializerWithNestedSerializers(TypeSerializer<?>[] nestedSerializers) { |
| return new TestCompositeTypeSerializer(outerConfiguration, nestedSerializers); |
| } |
| |
| @Override |
| protected TypeSerializer<?>[] getNestedSerializers(TestCompositeTypeSerializer outerSerializer) { |
| return outerSerializer.getNestedSerializers(); |
| } |
| |
| @Override |
| protected void writeOuterSnapshot(DataOutputView out) throws IOException { |
| out.writeUTF(outerConfiguration); |
| } |
| |
| @Override |
| public void readOuterSnapshot(int readOuterSnapshotVersion, DataInputView in, ClassLoader userCodeClassLoader) throws IOException { |
| Assert.assertEquals(getCurrentOuterSnapshotVersion(), readOuterSnapshotVersion); |
| this.outerConfiguration = in.readUTF(); |
| } |
| |
| @Override |
| protected boolean isOuterSnapshotCompatible(TestCompositeTypeSerializer newSerializer) { |
| return outerConfiguration.equals(newSerializer.getOuterConfiguration()); |
| } |
| |
| @Override |
| public int getCurrentOuterSnapshotVersion() { |
| return 1; |
| } |
| } |
| |
| public enum TargetCompatibility { |
| COMPATIBLE_AS_IS, |
| COMPATIBLE_AFTER_MIGRATION, |
| COMPATIBLE_WITH_RECONFIGURED_SERIALIZER, |
| INCOMPATIBLE |
| } |
| |
| /** |
| * Used as nested serializers in the test composite serializer. |
| * A nested serializer can be configured with a {@link TargetCompatibility}, |
| * which indicates what the result of the schema compatibility check should be |
| * when a new instance of it is being checked for compatibility. |
| */ |
| public static class NestedSerializer extends TypeSerializer<String> { |
| |
| private static final long serialVersionUID = -6175000932620623446L; |
| |
| private static final StringSerializer delegateSerializer = StringSerializer.INSTANCE; |
| |
| private final TargetCompatibility targetCompatibility; |
| |
| NestedSerializer(TargetCompatibility targetCompatibility) { |
| this.targetCompatibility = targetCompatibility; |
| } |
| |
| @Override |
| public TypeSerializerSnapshot<String> snapshotConfiguration() { |
| return new NestedSerializerSnapshot(targetCompatibility); |
| } |
| |
| // -------------------------------------------------------------------------------- |
| // Serialization delegation |
| // -------------------------------------------------------------------------------- |
| |
| @Override |
| public String deserialize(String reuse, DataInputView source) throws IOException { |
| return delegateSerializer.deserialize(reuse, source); |
| } |
| |
| @Override |
| public String deserialize(DataInputView source) throws IOException { |
| return delegateSerializer.deserialize(source); |
| } |
| |
| @Override |
| public void serialize(String record, DataOutputView target) throws IOException { |
| delegateSerializer.serialize(record, target); |
| } |
| |
| @Override |
| public void copy(DataInputView source, DataOutputView target) throws IOException { |
| delegateSerializer.copy(source, target); |
| } |
| |
| @Override |
| public String copy(String from) { |
| return delegateSerializer.copy(from); |
| } |
| |
| @Override |
| public String copy(String from, String reuse) { |
| return delegateSerializer.copy(from, reuse); |
| } |
| |
| @Override |
| public String createInstance() { |
| return delegateSerializer.createInstance(); |
| } |
| |
| @Override |
| public TypeSerializer<String> duplicate() { |
| return this; |
| } |
| |
| @Override |
| public boolean isImmutableType() { |
| return false; |
| } |
| |
| @Override |
| public int getLength() { |
| return 0; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (canEqual(obj)) { |
| return targetCompatibility == ((NestedSerializer) obj).targetCompatibility; |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return targetCompatibility.hashCode(); |
| } |
| |
| @Override |
| public boolean canEqual(Object obj) { |
| return obj instanceof NestedSerializer; |
| } |
| } |
| |
| /** |
| * Snapshot of the {@link NestedSerializer}. |
| */ |
| public static class NestedSerializerSnapshot implements TypeSerializerSnapshot<String> { |
| |
| private TargetCompatibility targetCompatibility; |
| |
| public NestedSerializerSnapshot() {} |
| |
| public NestedSerializerSnapshot(TargetCompatibility targetCompatibility) { |
| this.targetCompatibility = targetCompatibility; |
| } |
| |
| @Override |
| public void writeSnapshot(DataOutputView out) throws IOException { |
| out.writeInt(targetCompatibility.ordinal()); |
| } |
| |
| @Override |
| public void readSnapshot(int readVersion, DataInputView in, ClassLoader userCodeClassLoader) throws IOException { |
| this.targetCompatibility = TargetCompatibility.values()[in.readInt()]; |
| } |
| |
| @Override |
| public TypeSerializerSchemaCompatibility<String> resolveSchemaCompatibility(TypeSerializer<String> newSerializer) { |
| // checks the exact class instead of using instanceof; |
| // this ensures that we get a new serializer, and not a ReconfiguredNestedSerializer or RestoredNestedSerializer |
| if (newSerializer.getClass() == NestedSerializer.class) { |
| switch (targetCompatibility) { |
| case COMPATIBLE_AS_IS: |
| return TypeSerializerSchemaCompatibility.compatibleAsIs(); |
| case COMPATIBLE_AFTER_MIGRATION: |
| return TypeSerializerSchemaCompatibility.compatibleAfterMigration(); |
| case COMPATIBLE_WITH_RECONFIGURED_SERIALIZER: |
| return TypeSerializerSchemaCompatibility.compatibleWithReconfiguredSerializer( |
| new ReconfiguredNestedSerializer(targetCompatibility)); |
| case INCOMPATIBLE: |
| return TypeSerializerSchemaCompatibility.incompatible(); |
| default: |
| throw new IllegalStateException("Unexpected target compatibility."); |
| } |
| } |
| |
| throw new IllegalArgumentException("Expected the new serializer to be of class " + NestedSerializer.class); |
| } |
| |
| @Override |
| public TypeSerializer<String> restoreSerializer() { |
| return new RestoredNestedSerializer(targetCompatibility); |
| } |
| |
| @Override |
| public int getCurrentVersion() { |
| return 1; |
| } |
| } |
| |
| /** |
| * A variant of the {@link NestedSerializer} used only when creating a reconfigured instance |
| * of the serializer. This is used in tests as a tag to identify that the correct serializer |
| * instances are being used. |
| */ |
| static class ReconfiguredNestedSerializer extends NestedSerializer { |
| |
| private static final long serialVersionUID = -1396401178636869659L; |
| |
| public ReconfiguredNestedSerializer(TargetCompatibility targetCompatibility) { |
| super(targetCompatibility); |
| } |
| |
| } |
| |
| /** |
| * A variant of the {@link NestedSerializer} used only when creating a restored instance |
| * of the serializer. This is used in tests as a tag to identify that the correct serializer |
| * instances are being used. |
| */ |
| static class RestoredNestedSerializer extends NestedSerializer { |
| |
| private static final long serialVersionUID = -1396401178636869659L; |
| |
| public RestoredNestedSerializer(TargetCompatibility targetCompatibility) { |
| super(targetCompatibility); |
| } |
| |
| } |
| } |