| /* |
| * Copyright 2020 Google LLC |
| * |
| * 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 com.google.auto.value.extension.serializable.serializer; |
| |
| import com.google.auto.value.extension.serializable.serializer.impl.SerializerFactoryImpl; |
| import com.google.auto.value.extension.serializable.serializer.interfaces.SerializerExtension; |
| import com.google.auto.value.extension.serializable.serializer.interfaces.SerializerFactory; |
| import com.google.auto.value.processor.SimpleServiceLoader; |
| import com.google.common.base.Throwables; |
| import com.google.common.collect.ImmutableList; |
| import javax.annotation.processing.ProcessingEnvironment; |
| import javax.tools.Diagnostic; |
| |
| /** |
| * Builds a {@link SerializerFactory} populated with discovered {@link SerializerExtension} |
| * instances. |
| */ |
| public final class SerializerFactoryLoader { |
| |
| /** |
| * Returns a {@link SerializerFactory} with {@link SerializerExtension} instances provided by the |
| * {@link java.util.ServiceLoader}. |
| */ |
| public static SerializerFactory getFactory(ProcessingEnvironment processingEnv) { |
| return new SerializerFactoryImpl(loadExtensions(processingEnv), processingEnv); |
| } |
| |
| private static ImmutableList<SerializerExtension> loadExtensions( |
| ProcessingEnvironment processingEnv) { |
| try { |
| return ImmutableList.copyOf( |
| SimpleServiceLoader.load( |
| SerializerExtension.class, SerializerFactoryLoader.class.getClassLoader())); |
| } catch (Throwable t) { |
| processingEnv |
| .getMessager() |
| .printMessage( |
| Diagnostic.Kind.ERROR, |
| "An exception occurred while looking for SerializerExtensions. No extensions will" |
| + " function.\n" |
| + Throwables.getStackTraceAsString(t)); |
| return ImmutableList.of(); |
| } |
| } |
| |
| private SerializerFactoryLoader() {} |
| } |