Add temporary GlobalAuthenticationConfigurerAdapter

Fixes gh-4664

samples/boot/oauth2login/src/main/java/org/springframework/security/config/annotation/authentication/configurers/GlobalAuthenticationConfigurerAdapter.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2002-2017 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.security.config.annotation.authentication.configurers;
+
+import org.springframework.core.annotation.Order;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.config.annotation.SecurityConfigurer;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+
+/**
+ * <b>NOTE:</b>
+ * This class is here as a TEMPORARY FIX in order to force
+ * <code>@ConditionalOnClass(GlobalAuthenticationConfigurerAdapter.class)</code> in
+ * <code>org.springframework.boot.autoconfigure.security.SecurityAutoConfiguration</code>.
+ * <p>
+ * Spring Boot M5 expects GlobalAuthenticationConfigurerAdapter to be located in package
+ * <code>org.springframework.security.config.annotation.authentication.configurers</code>.
+ * However, it's recently been moved to
+ * <code>org.springframework.security.config.annotation.authentication.configuration</code>
+ * resulting in <code>SecurityAutoConfiguration</code> <b>NOT</b> being triggered.
+ * <p>
+ * This class should be removed after a fix has been applied to Spring Boot M6 or RC1.
+ *
+ * @author Joe Grandja
+ */
+@Order(100)
+public abstract class GlobalAuthenticationConfigurerAdapter implements
+	SecurityConfigurer<AuthenticationManager, AuthenticationManagerBuilder> {
+
+	public void init(AuthenticationManagerBuilder auth) throws Exception {
+	}
+
+	public void configure(AuthenticationManagerBuilder auth) throws Exception {
+	}
+}