Allow management endpoints to express what http methods they support

Previously a management endpoint was either GET or POST. That requirement seems limited.

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/AbstractEndpoint.java

@@ -19,17 +19,28 @@ package org.springframework.boot.actuate.endpoint;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Pattern;
 
+import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
 
 /**
  * Abstract base for {@link Endpoint} implementations.
+ * <p>
+ * {@link Endpoint}s that support other {@link HttpMethod}s than {@link HttpMethod#GET}
+ * should override {@link #methods()} and provide a list of supported methods.
  * 
  * @author Phillip Webb
+ * @author Christian Dupuis
  */
 public abstract class AbstractEndpoint<T> implements Endpoint<T> {
 
 	private static final MediaType[] NO_MEDIA_TYPES = new MediaType[0];
 
+	protected static final HttpMethod[] NO_HTTP_METHOD = new HttpMethod[0];
+
+	protected static final HttpMethod[] GET_HTTP_METHOD = new HttpMethod[] { HttpMethod.GET };
+
+	protected static final HttpMethod[] POST_HTTP_METHOD = new HttpMethod[] { HttpMethod.POST };
+
 	@NotNull
 	@Pattern(regexp = "/[^/]*", message = "Path must start with /")
 	private String path;
@@ -64,8 +75,12 @@ public abstract class AbstractEndpoint<T> implements Endpoint<T> {
 	}
 
 	@Override
-	public MediaType[] getProduces() {
+	public MediaType[] produces() {
 		return NO_MEDIA_TYPES;
 	}
 
+	@Override
+	public HttpMethod[] methods() {
+		return GET_HTTP_METHOD;
+	}
 }

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/ActionEndpoint.java

@@ -1,27 +0,0 @@
-/*
- * Copyright 2012-2013 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.actuate.endpoint;
-
-/**
- * Tagging interface used to indicate that {@link Endpoint} that performs some action.
- * Allows mappings to refine the types of request supported.
- * 
- * @author Phillip Webb
- */
-public interface ActionEndpoint<T> extends Endpoint<T> {
-
-}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/BeansEndpoint.java

@@ -51,7 +51,7 @@ public class BeansEndpoint extends AbstractEndpoint<String> implements
 	}
 
 	@Override
-	public MediaType[] getProduces() {
+	public MediaType[] produces() {
 		return new MediaType[] { MediaType.APPLICATION_JSON };
 	}
 

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/Endpoint.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.actuate.endpoint;
 
+import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
 
 /**
@@ -24,6 +25,7 @@ import org.springframework.http.MediaType;
  * 
  * @author Phillip Webb
  * @author Dave Syer
+ * @author Christian Dupuis
  */
 public interface Endpoint<T> {
 
@@ -42,7 +44,12 @@ public interface Endpoint<T> {
 	/**
 	 * Returns the {@link MediaType}s that this endpoint produces or {@code null}.
 	 */
-	MediaType[] getProduces();
+	MediaType[] produces();
+
+	/**
+	 * Returns the {@link HttpMethod}s that this endpoint supports.
+	 */
+	HttpMethod[] methods();
 
 	/**
 	 * Called to invoke the endpoint.

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/ShutdownEndpoint.java

@@ -26,15 +26,17 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.http.HttpMethod;
 
 /**
- * {@link ActionEndpoint} to shutdown the {@link ApplicationContext}.
+ * {@link Endpoint} to shutdown the {@link ApplicationContext}.
  * 
  * @author Dave Syer
+ * @author Christian Dupuis
  */
 @ConfigurationProperties(name = "endpoints.shutdown", ignoreUnknownFields = false)
 public class ShutdownEndpoint extends AbstractEndpoint<Map<String, Object>> implements
-		ApplicationContextAware, ActionEndpoint<Map<String, Object>> {
+		ApplicationContextAware {
 
 	private ConfigurableApplicationContext context;
 
@@ -80,4 +82,9 @@ public class ShutdownEndpoint extends AbstractEndpoint<Map<String, Object>> impl
 		}
 	}
 
+	@Override
+	public HttpMethod[] methods() {
+		return POST_HTTP_METHOD;
+	}
+
 }

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/mvc/EndpointHandlerAdapter.java

@@ -150,7 +150,7 @@ public final class EndpointHandlerAdapter implements HandlerAdapter {
 
 	private List<MediaType> getProducibleMediaTypes(Endpoint<?> endpoint,
 			Class<?> returnValueClass) {
-		MediaType[] mediaTypes = endpoint.getProduces();
+		MediaType[] mediaTypes = endpoint.produces();
 		if (mediaTypes != null && mediaTypes.length != 0) {
 			return Arrays.asList(mediaTypes);
 		}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/mvc/EndpointHandlerMapping.java

@@ -25,10 +25,10 @@ import javax.servlet.http.HttpServletRequest;
 
 import org.springframework.beans.factory.BeanFactoryUtils;
 import org.springframework.beans.factory.InitializingBean;
-import org.springframework.boot.actuate.endpoint.ActionEndpoint;
 import org.springframework.boot.actuate.endpoint.Endpoint;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
+import org.springframework.http.HttpMethod;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 import org.springframework.web.servlet.HandlerExecutionChain;
@@ -37,10 +37,9 @@ import org.springframework.web.servlet.handler.AbstractUrlHandlerMapping;
 
 /**
  * {@link HandlerMapping} to map {@link Endpoint}s to URLs via {@link Endpoint#getPath()}.
- * Standard {@link Endpoint}s are mapped to GET requests, {@link ActionEndpoint}s are
- * mapped to POST requests.
  * 
  * @author Phillip Webb
+ * @author Christian Dupuis
  * @see EndpointHandlerAdapter
  */
 public class EndpointHandlerMapping extends AbstractUrlHandlerMapping implements
@@ -94,8 +93,9 @@ public class EndpointHandlerMapping extends AbstractUrlHandlerMapping implements
 		if (handler != null) {
 			Object endpoint = (handler instanceof HandlerExecutionChain ? ((HandlerExecutionChain) handler)
 					.getHandler() : handler);
-			String method = (endpoint instanceof ActionEndpoint<?> ? "POST" : "GET");
+			HttpMethod method = HttpMethod.valueOf(request.getMethod());
-			if (request.getMethod().equals(method)) {
+			if (endpoint instanceof Endpoint
+					&& supportsMethod(((Endpoint<?>) endpoint).methods(), method)) {
 				return endpoint;
 			}
 		}
@@ -131,4 +131,16 @@ public class EndpointHandlerMapping extends AbstractUrlHandlerMapping implements
 	public List<Endpoint<?>> getEndpoints() {
 		return Collections.unmodifiableList(this.endpoints);
 	}
+
+	private boolean supportsMethod(HttpMethod[] supportedMethods,
+			HttpMethod requestedMethod) {
+		Assert.notNull(supportedMethods, "SupportMethods must not be null");
+		Assert.notNull(supportedMethods, "RequestedMethod must not be null");
+		for (HttpMethod supportedMethod : supportedMethods) {
+			if (supportedMethod.equals(requestedMethod)) {
+				return true;
+			}
+		}
+		return false;
+	}
 }