refactor: Remove obsolete SpringFactoriesLoader#loadFactoryNames

spring-cloud-context/src/main/java/org/springframework/cloud/bootstrap/BootstrapImportSelector.java

@@ -24,12 +24,12 @@
 import java.util.List;
 import java.util.Map;
 
+import org.springframework.boot.context.annotation.ImportCandidates;
 import org.springframework.context.EnvironmentAware;
 import org.springframework.context.annotation.DeferredImportSelector;
 import org.springframework.core.annotation.AnnotationAwareOrderComparator;
 import org.springframework.core.annotation.Order;
 import org.springframework.core.env.Environment;
-import org.springframework.core.io.support.SpringFactoriesLoader;
 import org.springframework.core.style.ToStringCreator;
 import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
@@ -38,9 +38,10 @@
 import org.springframework.util.StringUtils;
 
 /**
- * This class uses {@link SpringFactoriesLoader} to load {@link BootstrapConfiguration}
- * entries from {@code spring.factories}. The classes are then loaded so they can be
- * sorted using {@link AnnotationAwareOrderComparator#sort(List)}. This class is a
+ * This class uses {@link ImportCandidates} to load {@link BootstrapConfiguration} entries
+ * from {@code org.springframework.cloud.bootstrap.BootstrapConfiguration.imports}.
+ * The classes are then loaded so they can be sorted using
+ * {@link AnnotationAwareOrderComparator#sort(List)}. This class is a
  * {@link DeferredImportSelector} so {@code @Conditional} annotations on imported classes
  * are supported.
  *
@@ -62,7 +63,7 @@ public String[] selectImports(AnnotationMetadata annotationMetadata) {
 		ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
 		// Use names and ensure unique to protect against duplicates
 		List<String> names = new ArrayList<>(
-				SpringFactoriesLoader.loadFactoryNames(BootstrapConfiguration.class, classLoader));
+				ImportCandidates.load(BootstrapConfiguration.class, classLoader).getCandidates());
 		names.addAll(Arrays.asList(StringUtils
 				.commaDelimitedListToStringArray(this.environment.getProperty("spring.cloud.bootstrap.sources", ""))));
 

spring-cloud-context/src/main/java/org/springframework/cloud/context/refresh/ConfigDataContextRefresher.java

@@ -29,7 +29,6 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.env.EnvironmentPostProcessor;
 import org.springframework.boot.logging.DeferredLogFactory;
-import org.springframework.boot.util.Instantiator;
 import org.springframework.cloud.autoconfigure.RefreshAutoConfiguration;
 import org.springframework.cloud.context.config.ContextRefreshedWithApplicationEvent;
 import org.springframework.cloud.context.scope.refresh.RefreshScope;
@@ -77,17 +76,12 @@ protected void updateEnvironment() {
 		// decrypt happen after refresh. The hard coded call to
 		// ConfigDataEnvironmentPostProcessor.applyTo() is now automated as well.
 		DeferredLogFactory logFactory = new PassthruDeferredLogFactory();
-		List<String> classNames = SpringFactoriesLoader.loadFactoryNames(EnvironmentPostProcessor.class,
-				getClass().getClassLoader());
-		Instantiator<EnvironmentPostProcessor> instantiator = new Instantiator<>(EnvironmentPostProcessor.class,
-				(parameters) -> {
-					parameters.add(DeferredLogFactory.class, logFactory);
-					parameters.add(Log.class, logFactory::getLog);
-					parameters.add(ConfigurableBootstrapContext.class, bootstrapContext);
-					parameters.add(BootstrapContext.class, bootstrapContext);
-					parameters.add(BootstrapRegistry.class, bootstrapContext);
-				});
-		List<EnvironmentPostProcessor> postProcessors = instantiator.instantiate(classNames);
+		SpringFactoriesLoader.ArgumentResolver argumentResolver = SpringFactoriesLoader.ArgumentResolver.of(DeferredLogFactory.class, logFactory);
+		argumentResolver = argumentResolver.and(ConfigurableBootstrapContext.class, bootstrapContext);
+		argumentResolver = argumentResolver.and(BootstrapContext.class, bootstrapContext);
+		argumentResolver = argumentResolver.and(BootstrapRegistry.class, bootstrapContext);
+		SpringFactoriesLoader loader = SpringFactoriesLoader.forDefaultResourceLocation(getClass().getClassLoader());
+		List<EnvironmentPostProcessor> postProcessors = loader.load(EnvironmentPostProcessor.class, argumentResolver);
 		for (EnvironmentPostProcessor postProcessor : postProcessors) {
 			postProcessor.postProcessEnvironment(environment, application);
 		}

spring-cloud-context/src/main/resources/META-INF/spring.factories

@@ -3,12 +3,6 @@ org.springframework.context.ApplicationListener=\
 org.springframework.cloud.bootstrap.BootstrapApplicationListener,\
 org.springframework.cloud.bootstrap.LoggingSystemShutdownListener,\
 org.springframework.cloud.context.restart.RestartListener
-# Spring Cloud Bootstrap components
-org.springframework.cloud.bootstrap.BootstrapConfiguration=\
-org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration,\
-org.springframework.cloud.bootstrap.encrypt.EncryptionBootstrapConfiguration,\
-org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration,\
-org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration
 # Spring Boot BootstrapRegistryInitializer
 org.springframework.boot.BootstrapRegistryInitializer=\
 org.springframework.cloud.bootstrap.RefreshBootstrapRegistryInitializer,\

spring-cloud-context/src/main/resources/META-INF/spring/org.springframework.cloud.bootstrap.BootstrapConfiguration.imports

@@ -0,0 +1,4 @@
+org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration
+org.springframework.cloud.bootstrap.encrypt.EncryptionBootstrapConfiguration
+org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration
+org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration

spring-cloud-context/src/test/resources/META-INF/spring.factories

@@ -1,8 +1,3 @@
-# Bootstrap components
-org.springframework.cloud.bootstrap.BootstrapConfiguration=\
-org.springframework.cloud.bootstrap.TestBootstrapConfiguration,\
-org.springframework.cloud.bootstrap.TestHigherPriorityBootstrapConfiguration
-
 org.springframework.boot.env.EnvironmentPostProcessor=\
 org.springframework.cloud.context.test.TestEnvPostProcessor
 
@@ -12,4 +7,4 @@ org.springframework.cloud.context.test.TestConfigDataLocationResolver
 
 # ConfigData Loaders
 org.springframework.boot.context.config.ConfigDataLoader=\
-org.springframework.cloud.context.test.TestConfigDataLoader
+org.springframework.cloud.context.test.TestConfigDataLoader

spring-cloud-context/src/test/resources/META-INF/spring/org.springframework.cloud.bootstrap.BootstrapConfiguration.imports

@@ -0,0 +1,2 @@
+org.springframework.cloud.bootstrap.TestBootstrapConfiguration
+org.springframework.cloud.bootstrap.TestHigherPriorityBootstrapConfiguration