content: /*
   * Copyright (C) 2012 Facebook, Inc.
   *
   * Licensed 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 io.airlift.drift.codec.metadata;
  
  import io.airlift.drift.codec.BonkBean;
  import io.airlift.drift.codec.BonkBuilder;
  import io.airlift.drift.codec.BonkConstructor;
  import io.airlift.drift.codec.BonkField;
  import io.airlift.drift.codec.BonkMethod;
  import io.airlift.drift.codec.idlannotations.BeanWIthConflictingIdlAnnotationMapsForField;
  import io.airlift.drift.codec.idlannotations.BeanWithMatchingIdlAnnotationsMapsForField;
  import io.airlift.drift.codec.idlannotations.BeanWithOneIdlAnnotationMapForField;
  import io.airlift.drift.codec.idlannotations.ExceptionWithIdlAnnotations;
  import io.airlift.drift.codec.idlannotations.StructWithIdlAnnotations;
  import io.airlift.drift.codec.idlannotations.UnionWithIdlAnnotations;
  import org.testng.annotations.Test;
  
  import java.lang.reflect.Type;
  import java.util.Map;
  
  import static io.airlift.drift.codec.metadata.ThriftStructMetadata.MetadataType.STRUCT;
  import static io.airlift.drift.codec.metadata.ThriftStructMetadata.MetadataType.UNION;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertFalse;
  import static org.testng.Assert.assertNotNull;
  import static org.testng.Assert.assertTrue;
  
  public class TestThriftStructMetadata
  {
      @Test
      public void testField()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(BonkField.class, 0, 0);
  
          verifyFieldInjection(metadata, 1, "message");
          verifyFieldExtraction(metadata, 1, "message");
          verifyFieldInjection(metadata, 2, "type");
          verifyFieldExtraction(metadata, 2, "type");
      }
  
      private void verifyFieldInjection(ThriftStructMetadata metadata, int id, String name)
      {
          ThriftInjection injection = metadata.getField(id).getInjections().get(0);
          assertThat(injection).isNotNull().isInstanceOf(ThriftFieldInjection.class);
          ThriftFieldInjection fieldInjection = (ThriftFieldInjection) injection;
          assertEquals(fieldInjection.getField().getName(), name);
      }
  
      private void verifyFieldExtraction(ThriftStructMetadata metadata, int id, String name)
      {
          assertTrue(metadata.getField(id).getExtraction().isPresent());
          ThriftExtraction extraction = metadata.getField(id).getExtraction().get();
          assertThat(extraction).isInstanceOf(ThriftFieldExtractor.class);
          ThriftFieldExtractor fieldExtractor = (ThriftFieldExtractor) extraction;
          assertEquals(fieldExtractor.getField().getName(), name);
      }
  
      @Test
      public void testBean()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(BonkBean.class, 0, 2);
          verifyParameterInjection(metadata, 1, "message", 0);
          verifyMethodExtraction(metadata, 1, "message", "getMessage");
          verifyParameterInjection(metadata, 2, "type", 0);
          verifyMethodExtraction(metadata, 2, "type", "getType");
      }
  
      private void verifyParameterInjection(ThriftStructMetadata metadata, int id, String name, int parameterIndex)
      {
          ThriftInjection injection = metadata.getField(id).getInjections().get(0);
          assertThat(injection).isNotNull().isInstanceOf(ThriftParameterInjection.class);
          ThriftParameterInjection parameterInjection = (ThriftParameterInjection) injection;
          assertEquals(parameterInjection.getId(), id);
          assertEquals(parameterInjection.getName(), name);
          assertEquals(parameterInjection.getParameterIndex(), parameterIndex);
      }
  
      private void verifyMethodExtraction(ThriftStructMetadata metadata, int id, String name, String methodName)
      {
          assertTrue(metadata.getField(id).getExtraction().isPresent());
          ThriftExtraction extraction = metadata.getField(id).getExtraction().get();
          assertThat(extraction).isInstanceOf(ThriftMethodExtractor.class);
          ThriftMethodExtractor methodExtractor = (ThriftMethodExtractor) extraction;
          assertEquals(methodExtractor.getMethod().getName(), methodName);
          assertEquals(methodExtractor.getName(), name);
      }
  
      @Test
      public void testConstructor()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(BonkConstructor.class, 2, 0);
          verifyParameterInjection(metadata, 1, "message", 0);
          verifyMethodExtraction(metadata, 1, "message", "getMessage");
          verifyParameterInjection(metadata, 2, "type", 1);
          verifyMethodExtraction(metadata, 2, "type", "getType");
      }
  
      @Test
      public void testMethod()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(BonkMethod.class, 0, 1);
          verifyParameterInjection(metadata, 1, "message", 0);
          verifyMethodExtraction(metadata, 1, "message", "getMessage");
          verifyParameterInjection(metadata, 2, "type", 1);
          verifyMethodExtraction(metadata, 2, "type", "getType");
      }
  
      @Test
      public void testBuilder()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(BonkBuilder.class, 0, 2);
          verifyParameterInjection(metadata, 1, "message", 0);
          verifyMethodExtraction(metadata, 1, "message", "getMessage");
          verifyParameterInjection(metadata, 2, "type", 0);
          verifyMethodExtraction(metadata, 2, "type", "getType");
      }
  
      @Test
      public void testFieldWithOneIdlAnnotationMap()
              throws Exception
      {
          // Single field with IDL annotation map on getter, but not on setter: should be okay
          ThriftStructMetadata metadata = testStructMetadataBuild(BeanWithOneIdlAnnotationMapForField.class, 0, 1);
          Map<String, String> idlAnnotations = metadata.getField(2).getIdlAnnotations();
          assertEquals(idlAnnotations.size(), 2);
          assertEquals(idlAnnotations.get("testkey1"), "testvalue1");
          assertEquals(idlAnnotations.get("testkey2"), "testvalue2");
      }
  
      @Test
      public void testFieldWithMatchingIdlAnnotationMaps()
              throws Exception
      {
          // Single field with matching IDL annotation maps on setter vs getter: should be okay
          ThriftStructMetadata metadata = testStructMetadataBuild(BeanWithMatchingIdlAnnotationsMapsForField.class, 0, 1);
          Map<String, String> idlAnnotations = metadata.getField(2).getIdlAnnotations();
          assertEquals(idlAnnotations.size(), 2);
          assertEquals(idlAnnotations.get("testkey1"), "testvalue1");
          assertEquals(idlAnnotations.get("testkey2"), "testvalue2");
      }
  
      @Test(expectedExceptions = MetadataErrorException.class)
      public void testFieldWithConflictingIdlAnnotationMap()
              throws Exception
      {
          // Single field with conflicting IDL annotation maps on setter vs getter: should fail
          testStructMetadataBuild(BeanWIthConflictingIdlAnnotationMapsForField.class, 0, 1);
      }
  
      @Test
      public void testStructWithIdlAnnotationsMap()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(StructWithIdlAnnotations.class, 0, 0);
          Map<String, String> idlAnnotations = metadata.getIdlAnnotations();
          assertEquals(idlAnnotations.size(), 2);
          assertEquals(idlAnnotations.get("testkey1"), "testvalue1");
          assertEquals(idlAnnotations.get("testkey2"), "testvalue2");
      }
  
      @Test
      public void testUnionWithIdlAnnotationsMap()
              throws Exception
      {
          ThriftStructMetadata metadata = testUnionMetadataBuild(UnionWithIdlAnnotations.class, 0, 2);
          Map<String, String> idlAnnotations = metadata.getIdlAnnotations();
          assertEquals(idlAnnotations.size(), 2);
          assertEquals(idlAnnotations.get("testkey1"), "testvalue1");
          assertEquals(idlAnnotations.get("testkey2"), "testvalue2");
      }
  
      @Test
      public void testExceptionWithIdlAnnotationsMap()
              throws Exception
      {
          ThriftStructMetadata metadata = testStructMetadataBuild(ExceptionWithIdlAnnotations.class, 2, 0);
          Map<String, String> idlAnnotations = metadata.getIdlAnnotations();
          assertEquals(idlAnnotations.size(), 1);
          assertEquals(idlAnnotations.get("message"), "message");
      }
  
      private ThriftStructMetadata testStructMetadataBuild(Class<?> structClass, int expectedConstructorParameters, int expectedMethodInjections)
              throws Exception
      {
          return testMetadataBuild(
                  ThriftStructMetadataBuilder.class,
                  structClass,
                  expectedConstructorParameters,
                  expectedMethodInjections);
      }
  
      private ThriftStructMetadata testUnionMetadataBuild(Class<?> structClass, int expectedConstructorParameters, int expectedMethodInjections)
              throws Exception
      {
          return testMetadataBuild(
                  ThriftUnionMetadataBuilder.class,
                  structClass,
                  expectedConstructorParameters,
                  expectedMethodInjections);
      }
  
      private <T extends AbstractThriftMetadataBuilder> ThriftStructMetadata testMetadataBuild(
              Class<T> metadataBuilderType,
              Class<?> structClass,
              int expectedConstructorParameters,
              int expectedMethodInjections)
              throws Exception
      {
          ThriftStructMetadata metadata = buildMetadata(structClass, metadataBuilderType);
          assertNotNull(metadata);
          assertTrue(UNION == metadata.getMetadataType() || STRUCT == metadata.getMetadataType());
  
          verifyField(metadata, 1, "message");
          verifyField(metadata, 2, "type");
  
          ThriftConstructorInjection constructorInjection = metadata.getConstructorInjection().get();
          assertNotNull(constructorInjection);
          assertEquals(constructorInjection.getParameters().size(), expectedConstructorParameters);
  
          assertEquals(metadata.getMethodInjections().size(), expectedMethodInjections);
  
          return metadata;
      }
  
      private <T extends AbstractThriftMetadataBuilder> ThriftStructMetadata buildMetadata(Class<?> structClass, Class<T> metadataBuilderType)
              throws Exception
      {
          ThriftCatalog catalog = new ThriftCatalog();
          AbstractThriftMetadataBuilder builder =
                  metadataBuilderType.getConstructor(ThriftCatalog.class, Type.class)
                          .newInstance(catalog, structClass);
          assertNotNull(builder);
  
          assertNotNull(builder.getMetadataErrors());
          builder.getMetadataErrors().throwIfHasErrors();
          assertEquals(builder.getMetadataErrors().getWarnings().size(), 0);
  
          return builder.build();
      }
  
      private void verifyField(ThriftStructMetadata metadata, int id, String name)
      {
          ThriftFieldMetadata messageField = metadata.getField(id);
          assertNotNull(messageField, "field '" + name + "' is null");
          assertEquals(messageField.getId(), id);
          assertEquals(messageField.getName(), name);
          assertFalse(messageField.isReadOnly());
          assertFalse(messageField.isWriteOnly());
  
          assertTrue(messageField.getExtraction().isPresent());
          ThriftExtraction extraction = messageField.getExtraction().get();
          assertEquals(extraction.getId(), id);
          assertEquals(extraction.getName(), name);
  
          assertNotNull(messageField.getInjections());
          assertEquals(messageField.getInjections().size(), 1);
          ThriftInjection injection = messageField.getInjections().get(0);
          assertEquals(injection.getId(), id);
          assertEquals(injection.getName(), name);
      }
  }
  