ModuleConfiguration properties

- Add `prefix` based module configuration properties
 - Add default properties in `application.yml`
 - Move the properties into separate `ConfigurationProperties` bean rather than being inside `Configuration` bean

spring-cloud-stream-module-launcher/src/main/java/org/springframework/cloud/stream/module/launcher/ModuleLauncher.java

@@ -16,17 +16,14 @@
 
 package org.springframework.cloud.stream.module.launcher;
 
-import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import org.springframework.boot.loader.ModuleJarLauncher;
 import org.springframework.boot.loader.archive.JarFileArchive;
-import org.springframework.cloud.stream.module.resolver.AetherModuleResolver;
 import org.springframework.cloud.stream.module.resolver.ModuleResolver;
 import org.springframework.core.io.Resource;
 import org.springframework.util.Assert;
@@ -51,12 +48,6 @@ public class ModuleLauncher {
 
 	private final ModuleResolver moduleResolver;
 
-	@Deprecated
-	public ModuleLauncher() {
-		this(new AetherModuleResolver(new File(ModuleLauncherConfiguration.DEFAULT_LOCAL_REPO),
-				Collections.singletonMap("spring-cloud-stream-modules", ModuleLauncherConfiguration.DEFAULT_REMOTE_REPO)));
-	}
-
 	/**
 	 * Creates a module launcher using the provided module resolver
 	 * @param moduleResolver the module resolver instance to use

spring-cloud-stream-module-launcher/src/main/java/org/springframework/cloud/stream/module/launcher/ModuleLauncherConfiguration.java

@@ -16,40 +16,28 @@
 
 package org.springframework.cloud.stream.module.launcher;
 
-import java.io.File;
 import java.util.Collections;
 
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
-import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.cloud.stream.module.resolver.AetherModuleResolver;
 import org.springframework.cloud.stream.module.resolver.ModuleResolver;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 /**
+ * Configuration class that has the beans required for module launcher.
+ *
  * @author Marius Bogoevici
+ * @author Ilayaperumal Gopinathan
  */
 @Configuration
-@ConfigurationProperties
-// TODO: use a prefix
+@EnableConfigurationProperties(ModuleLauncherProperties.class)
 public class ModuleLauncherConfiguration {
 
-	public static final String DEFAULT_LOCAL_REPO = System.getProperty("user.home")
-			+ File.separator + ".m2" + File.separator + "repository";
-
-	public static final String DEFAULT_REMOTE_REPO = "https://repo.spring.io/libs-snapshot";
-
-	private File localRepository = new File(DEFAULT_LOCAL_REPO);
-
-	private String remoteRepository = DEFAULT_REMOTE_REPO;
-
-	public void setLocalRepository(File localRepository) {
-		this.localRepository = localRepository;
-	}
-
-	public void setRemoteRepository(String remoteRepository) {
-		this.remoteRepository = remoteRepository;
-	}
+	@Autowired
+	private ModuleLauncherProperties properties;
 
 	/**
 	 * Sets up the default Aether-based module resolver, unless overridden
@@ -57,8 +45,8 @@ public class ModuleLauncherConfiguration {
 	@Bean
 	@ConditionalOnMissingBean(ModuleResolver.class)
 	public ModuleResolver moduleResolver() {
-		return new AetherModuleResolver(this.localRepository, Collections.singletonMap(
-				"remoteRepository", this.remoteRepository));
+		return new AetherModuleResolver(properties.getLocalRepository(), Collections.singletonMap(
+				"remoteRepository", properties.getRemoteRepository()));
 	}
 
 	@Bean

spring-cloud-stream-module-launcher/src/main/java/org/springframework/cloud/stream/module/launcher/ModuleLauncherProperties.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2015 the original author or authors.
+ *
+ * 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 org.springframework.cloud.stream.module.launcher;
+
+import java.io.File;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * @author Ilayaperumal Gopinathan
+ */
+@ConfigurationProperties
+public class ModuleLauncherProperties {
+
+	private File localRepository;
+
+	private String remoteRepository;
+
+	public void setRemoteRepository(String remoteRepository) {
+		this.remoteRepository = remoteRepository;
+	}
+
+	protected String getRemoteRepository() {
+		return remoteRepository;
+	}
+
+	public void setLocalRepository(File localRepository) {
+		this.localRepository = localRepository;
+	}
+
+	protected File getLocalRepository() {
+		return localRepository;
+	}
+
+}

spring-cloud-stream-module-launcher/src/main/resources/application.yml

@@ -0,0 +1,2 @@
+localRepository: ${user.home}${file.separator}.m2${file.separator}repository
+remoteRepository: https://repo.spring.io/libs-snapshot