Generate deprecated meta-data for deprecated @Bean methods

This commit makes sure that a meta-data group exposed via a deprecated
`@Bean` method is deprecated as well. This also works if the class
in which the bean method is defined is itself deprecated.

Closes gh-7100

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessorTests.java

@@ -42,6 +42,8 @@ import org.springframework.boot.configurationsample.lombok.LombokInnerClassPrope
 import org.springframework.boot.configurationsample.lombok.LombokSimpleDataProperties;
 import org.springframework.boot.configurationsample.lombok.LombokSimpleProperties;
 import org.springframework.boot.configurationsample.lombok.SimpleLombokPojo;
+import org.springframework.boot.configurationsample.method.DeprecatedClassMethodConfig;
+import org.springframework.boot.configurationsample.method.DeprecatedMethodConfig;
 import org.springframework.boot.configurationsample.method.EmptyTypeMethodConfig;
 import org.springframework.boot.configurationsample.method.InvalidMethodConfig;
 import org.springframework.boot.configurationsample.method.MethodAndClassConfig;
@@ -284,6 +286,34 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		assertThat(metadata).isNotEqualTo(Metadata.withProperty("something.foo"));
 	}
 
+	@Test
+	public void deprecatedMethodConfig() throws Exception {
+		Class<DeprecatedMethodConfig> type = DeprecatedMethodConfig.class;
+		ConfigurationMetadata metadata = compile(type);
+		assertThat(metadata)
+				.has(Metadata.withGroup("foo").fromSource(type));
+		assertThat(metadata).has(Metadata.withProperty("foo.name", String.class)
+				.fromSource(DeprecatedMethodConfig.Foo.class)
+				.withDeprecation(null, null));
+		assertThat(metadata).has(Metadata.withProperty("foo.flag", Boolean.class)
+				.fromSource(DeprecatedMethodConfig.Foo.class)
+				.withDeprecation(null, null));
+	}
+
+	@Test
+	public void deprecatedMethodConfigOnClass() throws Exception {
+		Class<DeprecatedClassMethodConfig> type = DeprecatedClassMethodConfig.class;
+		ConfigurationMetadata metadata = compile(type);
+		assertThat(metadata)
+				.has(Metadata.withGroup("foo").fromSource(type));
+		assertThat(metadata).has(Metadata.withProperty("foo.name", String.class)
+				.fromSource(DeprecatedClassMethodConfig.Foo.class)
+				.withDeprecation(null, null));
+		assertThat(metadata).has(Metadata.withProperty("foo.flag", Boolean.class)
+				.fromSource(DeprecatedClassMethodConfig.Foo.class)
+				.withDeprecation(null, null));
+	}
+
 	@Test
 	public void innerClassRootConfig() throws Exception {
 		ConfigurationMetadata metadata = compile(InnerClassRootConfig.class);

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/method/DeprecatedClassMethodConfig.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2012-2016 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.boot.configurationsample.method;
+
+import org.springframework.boot.configurationsample.ConfigurationProperties;
+
+/**
+ * Sample for testing method configuration with deprecated class.
+ *
+ * @author Stephane Nicoll
+ */
+@Deprecated
+public class DeprecatedClassMethodConfig {
+
+	@ConfigurationProperties(prefix = "foo")
+	public Foo foo() {
+		return new Foo();
+	}
+
+	public static class Foo {
+
+		private String name;
+
+		private boolean flag;
+
+		public String getName() {
+			return this.name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public boolean isFlag() {
+			return this.flag;
+		}
+
+		public void setFlag(boolean flag) {
+			this.flag = flag;
+		}
+	}
+
+}

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/method/DeprecatedMethodConfig.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2012-2016 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.boot.configurationsample.method;
+
+import org.springframework.boot.configurationsample.ConfigurationProperties;
+
+/**
+ * Sample for testing deprecated method configuration.
+ *
+ * @author Stephane Nicoll
+ */
+public class DeprecatedMethodConfig {
+
+	@ConfigurationProperties(prefix = "foo")
+	@Deprecated
+	public Foo foo() {
+		return new Foo();
+	}
+
+	public static class Foo {
+
+		private String name;
+
+		private boolean flag;
+
+		public String getName() {
+			return this.name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public boolean isFlag() {
+			return this.flag;
+		}
+
+		public void setFlag(boolean flag) {
+			this.flag = flag;
+		}
+	}
+
+}