1 /* 2 * Copyright (C) 2015 The Dagger Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dagger.internal.codegen; 18 19 import static com.squareup.javapoet.MethodSpec.constructorBuilder; 20 import static com.squareup.javapoet.MethodSpec.methodBuilder; 21 import static com.squareup.javapoet.TypeSpec.classBuilder; 22 import static dagger.internal.codegen.javapoet.TypeNames.PRODUCTION_COMPONENT_MONITOR_FACTORY; 23 import static dagger.internal.codegen.javapoet.TypeNames.providerOf; 24 import static dagger.internal.codegen.javapoet.TypeNames.setOf; 25 import static javax.lang.model.element.Modifier.ABSTRACT; 26 import static javax.lang.model.element.Modifier.PRIVATE; 27 import static javax.lang.model.element.Modifier.STATIC; 28 29 import com.squareup.javapoet.ClassName; 30 import com.squareup.javapoet.MethodSpec; 31 import com.squareup.javapoet.TypeSpec; 32 import dagger.Module; 33 import dagger.Provides; 34 import dagger.internal.codegen.langmodel.DaggerElements; 35 import dagger.multibindings.Multibinds; 36 import dagger.producers.ProductionScope; 37 import dagger.producers.monitoring.ProductionComponentMonitor; 38 import dagger.producers.monitoring.internal.Monitors; 39 import java.util.Optional; 40 import javax.annotation.processing.Filer; 41 import javax.inject.Inject; 42 import javax.lang.model.SourceVersion; 43 import javax.lang.model.element.Element; 44 import javax.lang.model.element.TypeElement; 45 46 /** Generates a monitoring module for use with production components. */ 47 final class MonitoringModuleGenerator extends SourceFileGenerator<TypeElement> { 48 49 @Inject MonitoringModuleGenerator(Filer filer, DaggerElements elements, SourceVersion sourceVersion)50 MonitoringModuleGenerator(Filer filer, DaggerElements elements, SourceVersion sourceVersion) { 51 super(filer, elements, sourceVersion); 52 } 53 54 @Override nameGeneratedType(TypeElement componentElement)55 ClassName nameGeneratedType(TypeElement componentElement) { 56 return SourceFiles.generatedMonitoringModuleName(componentElement); 57 } 58 59 @Override originatingElement(TypeElement componentElement)60 Element originatingElement(TypeElement componentElement) { 61 return componentElement; 62 } 63 64 @Override write(ClassName generatedTypeName, TypeElement componentElement)65 Optional<TypeSpec.Builder> write(ClassName generatedTypeName, TypeElement componentElement) { 66 return Optional.of( 67 classBuilder(generatedTypeName) 68 .addAnnotation(Module.class) 69 .addModifiers(ABSTRACT) 70 .addMethod(privateConstructor()) 71 .addMethod(setOfFactories()) 72 .addMethod(monitor(componentElement))); 73 } 74 privateConstructor()75 private MethodSpec privateConstructor() { 76 return constructorBuilder().addModifiers(PRIVATE).build(); 77 } 78 setOfFactories()79 private MethodSpec setOfFactories() { 80 return methodBuilder("setOfFactories") 81 .addAnnotation(Multibinds.class) 82 .addModifiers(ABSTRACT) 83 .returns(setOf(PRODUCTION_COMPONENT_MONITOR_FACTORY)) 84 .build(); 85 } 86 monitor(TypeElement componentElement)87 private MethodSpec monitor(TypeElement componentElement) { 88 return methodBuilder("monitor") 89 .returns(ProductionComponentMonitor.class) 90 .addModifiers(STATIC) 91 .addAnnotation(Provides.class) 92 .addAnnotation(ProductionScope.class) 93 .addParameter(providerOf(ClassName.get(componentElement.asType())), "component") 94 .addParameter( 95 providerOf(setOf(PRODUCTION_COMPONENT_MONITOR_FACTORY)), "factories") 96 .addStatement( 97 "return $T.createMonitorForComponent(component, factories)", Monitors.class) 98 .build(); 99 } 100 } 101