Replace enabledByDefault to DefaultEnablement

This commit introduces a DefaultEnablement enum that replaces the
"enabledByDefault" boolean flag of Endpoint. This allows to better
control what indicates the default enablement of an endpoint.

With DefaultEnablement#ENABLED, the endpoint is enabled unless an
endpoint specific property says otherwise. With DefaultEnabled#DISABLED,
the endpoint is disabled unless an endpoint specific property says
otherwise. DefaultEnablement#NEUTRAL provides a dedicated option to
indicate that we should resort to the default settings in absence of
a specific property.

See gh-10161

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

@@ -19,9 +19,9 @@ package org.springframework.boot.actuate.autoconfigure.endpoint;
 import java.util.Arrays;
 import java.util.List;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.OperationParameterMapper;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.cache.CachingConfigurationFactory;
 import org.springframework.boot.actuate.endpoint.convert.ConversionServiceOperationParameterMapper;
 import org.springframework.boot.actuate.endpoint.http.ActuatorMediaType;

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

@@ -16,7 +16,8 @@
 
 package org.springframework.boot.actuate.autoconfigure.endpoint;
 
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.core.env.Environment;
 import org.springframework.util.Assert;
 
@@ -42,24 +43,24 @@ public class EndpointEnablementProvider {
 	 * Return the {@link EndpointEnablement} of an endpoint with no specific tech
 	 * exposure.
 	 * @param endpointId the id of the endpoint
-	 * @param enabledByDefault whether the endpoint is enabled by default or not
+	 * @param defaultEnablement the {@link DefaultEnablement} of the endpoint
 	 * @return the {@link EndpointEnablement} of that endpoint
 	 */
 	public EndpointEnablement getEndpointEnablement(String endpointId,
-			boolean enabledByDefault) {
-		return getEndpointEnablement(endpointId, enabledByDefault, null);
+			DefaultEnablement defaultEnablement) {
+		return getEndpointEnablement(endpointId, defaultEnablement, null);
 	}
 
 	/**
 	 * Return the {@link EndpointEnablement} of an endpoint for a specific tech exposure.
 	 * @param endpointId the id of the endpoint
-	 * @param enabledByDefault whether the endpoint is enabled by default or not
+	 * @param defaultEnablement the {@link DefaultEnablement} of the endpoint
 	 * @param exposure the requested {@link EndpointExposure}
 	 * @return the {@link EndpointEnablement} of that endpoint for the specified
 	 * {@link EndpointExposure}
 	 */
 	public EndpointEnablement getEndpointEnablement(String endpointId,
-			boolean enabledByDefault, EndpointExposure exposure) {
+			DefaultEnablement defaultEnablement, EndpointExposure exposure) {
 		Assert.hasText(endpointId, "Endpoint id must have a value");
 		Assert.isTrue(!endpointId.equals("default"),
 				"Endpoint id 'default' is a reserved "
@@ -74,10 +75,11 @@ public class EndpointEnablementProvider {
 		}
 		// All endpoints specific attributes have been looked at. Checking default value
 		// for the endpoint
-		if (!enabledByDefault) {
-			return getDefaultEndpointEnablement(endpointId, false, exposure);
+		if (defaultEnablement != DefaultEnablement.NEUTRAL) {
+			return getDefaultEndpointEnablement(endpointId,
+					(defaultEnablement == DefaultEnablement.ENABLED), exposure);
 		}
-		return getGlobalEndpointEnablement(endpointId, enabledByDefault, exposure);
+		return getGlobalEndpointEnablement(endpointId, defaultEnablement, exposure);
 	}
 
 	private EndpointEnablement findEnablement(String endpointId,
@@ -89,7 +91,7 @@ public class EndpointEnablementProvider {
 	}
 
 	private EndpointEnablement getGlobalEndpointEnablement(String endpointId,
-			boolean enabledByDefault, EndpointExposure exposure) {
+			DefaultEnablement defaultEnablement, EndpointExposure exposure) {
 		EndpointEnablement result = findGlobalEndpointEnablement(exposure);
 		if (result != null) {
 			return result;
@@ -98,7 +100,42 @@ public class EndpointEnablementProvider {
 		if (result != null) {
 			return result;
 		}
-		return getDefaultEndpointEnablement(endpointId, enabledByDefault, exposure);
+		boolean enablement = determineGlobalDefaultEnablement(defaultEnablement, exposure);
+		String message = determineGlobalDefaultMessage(endpointId, enablement, exposure,
+				defaultEnablement);
+		return new EndpointEnablement(enablement, message);
+	}
+
+	private boolean determineGlobalDefaultEnablement(DefaultEnablement defaultEnablement,
+			EndpointExposure exposure) {
+		if (defaultEnablement == DefaultEnablement.NEUTRAL) {
+			return exposure == null || exposure.isEnabledByDefault();
+		}
+		return (defaultEnablement == DefaultEnablement.ENABLED);
+	}
+
+	private String determineGlobalDefaultMessage(String endpointId, boolean enablement,
+			EndpointExposure exposure, DefaultEnablement defaultEnablement) {
+		StringBuilder message = new StringBuilder();
+		message.append(String.format("endpoint '%s' ", endpointId));
+		if (exposure != null) {
+			message.append(String.format("(%s) ", exposure.name().toLowerCase()));
+		}
+		message.append(String.format("is %s ", (enablement ? "enabled" : "disabled")));
+		if (defaultEnablement == DefaultEnablement.NEUTRAL) {
+			if (exposure != null) {
+				message.append(String.format("(default for %s endpoints)",
+						exposure.name().toLowerCase()));
+			}
+			else {
+				message.append("(default)");
+			}
+		}
+		else {
+			message.append("by default");
+		}
+		return message.toString();
+
 	}
 
 	private EndpointEnablement findGlobalEndpointEnablement(EndpointExposure exposure) {

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

@@ -20,9 +20,9 @@ import java.util.Collection;
 import java.util.stream.Collectors;
 
 import org.springframework.boot.actuate.endpoint.EndpointDiscoverer;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.Operation;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.core.env.Environment;
 
 /**
@@ -61,7 +61,7 @@ public class EndpointProvider<T extends Operation> {
 
 	private boolean isEnabled(EndpointInfo<?> endpoint) {
 		return this.endpointEnablementProvider.getEndpointEnablement(endpoint.getId(),
-				endpoint.isEnabledByDefault(), this.exposure).isEnabled();
+				endpoint.getDefaultEnablement(), this.exposure).isEnabled();
 	}
 
 }

spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/condition/ConditionalOnEnabledEndpoint.java

@@ -22,22 +22,39 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.context.annotation.Conditional;
 
 /**
  * {@link Conditional} that checks whether an endpoint is enabled or not. Matches
- * according to the {@code enabledByDefault} flag {@code types} flag that the
+ * according to the {@code defaultEnablement} and {@code types} flag that the
  * {@link Endpoint} may be restricted to.
  * <p>
- * If no specific {@code endpoints.<id>.*} or {@code endpoints.default.*} properties are
- * defined, the condition matches the {@code enabledByDefault} value regardless of the
- * specific {@link EndpointExposure}, if any. If any property are set, they are evaluated
- * with a sensible order of precedence.
+ * When an endpoint uses {@link DefaultEnablement#DISABLED}, it will only be enabled if
+ * {@code endpoint.<name>.enabled}, {@code endpoint.<name>.jmx.enabled} or
+ * {@code endpoint.<name>.web.enabled} is {@code true}.
  * <p>
+ * When an endpoint uses {@link DefaultEnablement#ENABLED}, it will be enabled unless
+ * {@code endpoint.<name>.enabled}, {@code endpoint.<name>.jmx.enabled} or
+ * {@code endpoint.<name>.web.enabled} is {@code false}.
+ * <p>
+ * When an endpoint uses {@link DefaultEnablement#NEUTRAL}, it will be enabled if
+ * {@code endpoint.default.enabled}, {@code endpoint.default.jmx.enabled} or
+ * {@code endpoint.default.web.enabled} is {@code true} and
+ * {@code endpoint.<name>.enabled}, {@code endpoint.<name>.jmx.enabled} or
+ * {@code endpoint.<name>.web.enabled} has not been set to {@code false}.
+ * <p>
+ * If any properties are set, they are evaluated from most to least specific, e.g.
+ * considering a web endpoint with id {@code foo}:
+ * <ol>
+ *     <li>endpoints.foo.web.enabled</li>
+ *     <li>endpoints.foo.enabled</li>
+ *     <li>endpoints.default.web.enabled</li>
+ *     <li>endpoints.default.enabled</li>
+ * </ol>
  * For instance if {@code endpoints.default.enabled} is {@code false} but
- * {@code endpoints.<id>.enabled} is {@code true}, the condition will match.
+ * {@code endpoints.<name>.enabled} is {@code true}, the condition will match.
  * <p>
  * This condition must be placed on a {@code @Bean} method producing an endpoint as its id
  * and other attributes are inferred from the {@link Endpoint} annotation set on the
@@ -53,7 +70,7 @@ import org.springframework.context.annotation.Conditional;
  *         ...
  *     }
  *
- *     &#064;Endpoint(id = "my", enabledByDefault = false)
+ *     &#064;Endpoint(id = "my", defaultEnablement = DefaultEnablement.DISABLED)
  *     static class MyEndpoint { ... }
  *
  * }</pre>

spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/condition/OnEnabledEndpointCondition.java

@@ -18,8 +18,9 @@ package org.springframework.boot.actuate.autoconfigure.endpoint.condition;
 
 import org.springframework.boot.actuate.autoconfigure.endpoint.EndpointEnablement;
 import org.springframework.boot.actuate.autoconfigure.endpoint.EndpointEnablementProvider;
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.jmx.annotation.JmxEndpointExtension;
 import org.springframework.boot.actuate.endpoint.web.annotation.WebEndpointExtension;
 import org.springframework.boot.autoconfigure.condition.ConditionMessage;
@@ -106,7 +107,7 @@ class OnEnabledEndpointCondition extends SpringBootCondition {
 		}
 		// If both types are set, all exposure technologies are exposed
 		EndpointExposure[] exposures = endpoint.exposure();
-		return new EndpointAttributes(endpoint.id(), endpoint.enabledByDefault(),
+		return new EndpointAttributes(endpoint.id(), endpoint.defaultEnablement(),
 				(exposures.length == 1 ? exposures[0] : null));
 	}
 
@@ -114,21 +115,23 @@ class OnEnabledEndpointCondition extends SpringBootCondition {
 
 		private final String id;
 
-		private final boolean enabled;
+		private final DefaultEnablement defaultEnablement;
 
 		private final EndpointExposure exposure;
 
-		EndpointAttributes(String id, boolean enabled, EndpointExposure exposure) {
+		EndpointAttributes(String id, DefaultEnablement defaultEnablement,
+				EndpointExposure exposure) {
 			if (!StringUtils.hasText(id)) {
 				throw new IllegalStateException("Endpoint id could not be determined");
 			}
 			this.id = id;
-			this.enabled = enabled;
+			this.defaultEnablement = defaultEnablement;
 			this.exposure = exposure;
 		}
 
 		public EndpointEnablement getEnablement(EndpointEnablementProvider provider) {
-			return provider.getEndpointEnablement(this.id, this.enabled, this.exposure);
+			return provider.getEndpointEnablement(this.id, this.defaultEnablement,
+					this.exposure);
 		}
 
 	}

spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/jmx/JmxEndpointAutoConfiguration.java

@@ -23,9 +23,9 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.actuate.autoconfigure.endpoint.DefaultCachingConfigurationFactory;
 import org.springframework.boot.actuate.autoconfigure.endpoint.EndpointProvider;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.OperationParameterMapper;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanRegistrar;
 import org.springframework.boot.actuate.endpoint.jmx.JmxEndpointOperation;
 import org.springframework.boot.actuate.endpoint.jmx.annotation.JmxAnnotationEndpointDiscoverer;

spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/condition/ConditionalOnEnabledEndpointTests.java

@@ -18,8 +18,9 @@ package org.springframework.boot.actuate.autoconfigure.endpoint.condition;
 
 import org.junit.Test;
 
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.jmx.annotation.JmxEndpointExtension;
 import org.springframework.boot.actuate.endpoint.web.annotation.WebEndpointExtension;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
@@ -297,7 +298,7 @@ public class ConditionalOnEnabledEndpointTests {
 	}
 
 	@Endpoint(id = "bar", exposure = { EndpointExposure.WEB,
-			EndpointExposure.JMX }, enabledByDefault = false)
+			EndpointExposure.JMX }, defaultEnablement = DefaultEnablement.DISABLED)
 	static class BarEndpoint {
 
 	}

spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/DefaultEndpointPathProviderTests.java

@@ -27,6 +27,7 @@ import org.mockito.MockitoAnnotations;
 
 import org.springframework.boot.actuate.autoconfigure.endpoint.EndpointProvider;
 import org.springframework.boot.actuate.autoconfigure.web.server.ManagementServerProperties;
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.web.WebEndpointOperation;
 
@@ -82,8 +83,10 @@ public class DefaultEndpointPathProviderTests {
 
 	private DefaultEndpointPathProvider createProvider(String contextPath) {
 		Collection<EndpointInfo<WebEndpointOperation>> endpoints = new ArrayList<>();
-		endpoints.add(new EndpointInfo<>("foo", true, Collections.emptyList()));
-		endpoints.add(new EndpointInfo<>("bar", true, Collections.emptyList()));
+		endpoints.add(new EndpointInfo<>("foo", DefaultEnablement.ENABLED,
+				Collections.emptyList()));
+		endpoints.add(new EndpointInfo<>("bar", DefaultEnablement.ENABLED,
+				Collections.emptyList()));
 		given(this.endpointProvider.getEndpoints()).willReturn(endpoints);
 		ManagementServerProperties managementServerProperties = new ManagementServerProperties();
 		managementServerProperties.setContextPath(contextPath);

spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/web/servlet/RequestMappingEndpointTests.java

@@ -21,6 +21,7 @@ import java.util.Map;
 
 import org.junit.Test;
 
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.OperationType;
 import org.springframework.boot.actuate.endpoint.web.OperationRequestPredicate;
@@ -140,8 +141,8 @@ public class RequestMappingEndpointTests {
 				(arguments) -> "Invoked", true, requestPredicate, "test");
 		WebMvcEndpointHandlerMapping mapping = new WebMvcEndpointHandlerMapping(
 				new EndpointMapping("application"),
-				Collections.singleton(new EndpointInfo<>("test", true,
-						Collections.singleton(operation))));
+				Collections.singleton(new EndpointInfo<>("test",
+				DefaultEnablement.ENABLED, Collections.singleton(operation))));
 		mapping.setApplicationContext(new StaticApplicationContext());
 		mapping.afterPropertiesSet();
 		return mapping;

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

@@ -20,6 +20,7 @@ import java.util.Collections;
 import java.util.Map;
 
 import org.springframework.beans.BeansException;
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
 import org.springframework.boot.actuate.endpoint.annotation.WriteOperation;
 import org.springframework.context.ApplicationContext;
@@ -34,7 +35,7 @@ import org.springframework.context.ConfigurableApplicationContext;
  * @author Andy Wilkinson
  * @since 2.0.0
  */
-@Endpoint(id = "shutdown", enabledByDefault = false)
+@Endpoint(id = "shutdown", defaultEnablement = DefaultEnablement.DISABLED)
 public class ShutdownEndpoint implements ApplicationContextAware {
 
 	private static final Map<String, Object> NO_CONTEXT_MESSAGE = Collections

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

+/*
+ * Copyright 2012-2017 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.boot.actuate.endpoint;
+
+/**
+ * Enumerate the enablement options for an endpoint.
+ *
+ * @author Stephane Nicoll
+ * @since 2.0.0
+ */
+public enum DefaultEnablement {
+
+	/**
+	 * The endpoint is enabled unless explicitly disabled.
+	 */
+	ENABLED,
+
+	/**
+	 * The endpoint is disabled unless explicitly enabled.
+	 */
+	DISABLED,
+
+	/**
+	 * The endpoint's enablement defaults to the "default" settings.
+	 */
+	NEUTRAL
+
+}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/annotation/EndpointExposure.java → spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/EndpointExposure.java

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.actuate.endpoint.annotation;
+package org.springframework.boot.actuate.endpoint;
 
 /**
- * An enumeration of the available {@link Endpoint} exposure technologies.
+ * An enumeration of the available exposure technologies for an endpoint.
  *
  * @author Stephane Nicoll
  * @since 2.0.0

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

@@ -29,7 +29,7 @@ public class EndpointInfo<T extends Operation> {
 
 	private final String id;
 
-	private final boolean enabledByDefault;
+	private final DefaultEnablement defaultEnablement;
 
 	private final Collection<T> operations;
 
@@ -37,12 +37,13 @@ public class EndpointInfo<T extends Operation> {
 	 * Creates a new {@code EndpointInfo} describing an endpoint with the given {@code id}
 	 * and {@code operations}.
 	 * @param id the id of the endpoint
-	 * @param enabledByDefault whether or not the endpoint is enabled by default
+	 * @param defaultEnablement the {@link DefaultEnablement} of the endpoint
 	 * @param operations the operations of the endpoint
 	 */
-	public EndpointInfo(String id, boolean enabledByDefault, Collection<T> operations) {
+	public EndpointInfo(String id, DefaultEnablement defaultEnablement,
+			Collection<T> operations) {
 		this.id = id;
-		this.enabledByDefault = enabledByDefault;
+		this.defaultEnablement = defaultEnablement;
 		this.operations = operations;
 	}
 
@@ -55,11 +56,11 @@ public class EndpointInfo<T extends Operation> {
 	}
 
 	/**
-	 * Returns whether or not this endpoint is enabled by default.
-	 * @return {@code true} if it is enabled by default, otherwise {@code false}
+	 * Return the {@link DefaultEnablement} of the endpoint.
+	 * @return the default enablement
 	 */
-	public boolean isEnabledByDefault() {
-		return this.enabledByDefault;
+	public DefaultEnablement getDefaultEnablement() {
+		return this.defaultEnablement;
 	}
 
 	/**

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

@@ -29,7 +29,9 @@ import java.util.function.Consumer;
 import java.util.function.Function;
 
 import org.springframework.beans.factory.BeanFactoryUtils;
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.EndpointDiscoverer;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.Operation;
 import org.springframework.boot.actuate.endpoint.OperationType;
@@ -117,9 +119,10 @@ public abstract class AnnotationEndpointDiscoverer<T extends Operation, K>
 	private EndpointInfo<T> createEndpointInfo(String beanName, Class<?> beanType,
 			AnnotationAttributes attributes) {
 		String id = attributes.getString("id");
-		boolean enabledByDefault = attributes.getBoolean("enabledByDefault");
+		DefaultEnablement defaultEnablement = (DefaultEnablement) attributes.get(
+				"defaultEnablement");
 		Map<Method, T> operations = discoverOperations(id, beanName, beanType);
-		return new EndpointInfo<>(id, enabledByDefault, operations.values());
+		return new EndpointInfo<>(id, defaultEnablement, operations.values());
 	}
 
 	private Map<Class<?>, EndpointExtensionInfo<T>> discoverExtensions(
@@ -192,7 +195,7 @@ public abstract class AnnotationEndpointDiscoverer<T extends Operation, K>
 				.put(this.operationKeyFactory.apply(operation), operation);
 		endpoint.getOperations().forEach(consumer);
 		extension.getOperations().forEach(consumer);
-		return new EndpointInfo<>(endpoint.getId(), endpoint.isEnabledByDefault(),
+		return new EndpointInfo<>(endpoint.getId(), endpoint.getDefaultEnablement(),
 				operations.values());
 	}
 

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

@@ -22,14 +22,15 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
-import org.springframework.boot.actuate.endpoint.EndpointDiscoverer;
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 
 /**
  * Identifies a type as being an endpoint.
  *
  * @author Andy Wilkinson
  * @since 2.0.0
- * @see EndpointDiscoverer
+ * @see AnnotationEndpointDiscoverer
  */
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.RUNTIME)
@@ -50,9 +51,10 @@ public @interface Endpoint {
 	EndpointExposure[] exposure() default {};
 
 	/**
-	 * Whether or not the endpoint is enabled by default.
-	 * @return {@code true} if the endpoint is enabled by default, otherwise {@code false}
+	 * Defines the {@link DefaultEnablement} of the endpoint. By default, the endpoint's
+	 * enablement defaults to the "default" settings.
+	 * @return the default enablement
 	 */
-	boolean enabledByDefault() default true;
+	DefaultEnablement defaultEnablement() default DefaultEnablement.NEUTRAL;
 
 }

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/jmx/annotation/JmxAnnotationEndpointDiscoverer.java

@@ -26,6 +26,7 @@ import java.util.List;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.OperationInvoker;
 import org.springframework.boot.actuate.endpoint.OperationParameterMapper;
@@ -33,7 +34,6 @@ import org.springframework.boot.actuate.endpoint.OperationType;
 import org.springframework.boot.actuate.endpoint.ReflectiveOperationInvoker;
 import org.springframework.boot.actuate.endpoint.annotation.AnnotationEndpointDiscoverer;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.cache.CachingConfiguration;
 import org.springframework.boot.actuate.endpoint.cache.CachingConfigurationFactory;
 import org.springframework.boot.actuate.endpoint.cache.CachingOperationInvoker;

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/annotation/WebAnnotationEndpointDiscoverer.java

@@ -27,6 +27,7 @@ import java.util.stream.Stream;
 
 import org.reactivestreams.Publisher;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.OperationInvoker;
 import org.springframework.boot.actuate.endpoint.OperationParameterMapper;
@@ -34,7 +35,6 @@ import org.springframework.boot.actuate.endpoint.OperationType;
 import org.springframework.boot.actuate.endpoint.ReflectiveOperationInvoker;
 import org.springframework.boot.actuate.endpoint.annotation.AnnotationEndpointDiscoverer;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.Selector;
 import org.springframework.boot.actuate.endpoint.cache.CachingConfiguration;
 import org.springframework.boot.actuate.endpoint.cache.CachingConfigurationFactory;

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/logger/LogFileWebEndpoint.java

@@ -21,8 +21,8 @@ import java.io.File;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.logging.LogFile;

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/management/HeapDumpWebEndpoint.java

@@ -36,8 +36,8 @@ import java.util.concurrent.locks.ReentrantLock;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
 import org.springframework.boot.actuate.endpoint.web.WebEndpointResponse;
 import org.springframework.boot.context.properties.ConfigurationProperties;

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/jmx/EndpointMBeanInfoAssemblerTests.java

@@ -25,6 +25,7 @@ import javax.management.MBeanParameterInfo;
 
 import org.junit.Test;
 
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.OperationInvoker;
 import org.springframework.boot.actuate.endpoint.OperationType;
@@ -47,8 +48,8 @@ public class EndpointMBeanInfoAssemblerTests {
 		JmxEndpointOperation operation = new JmxEndpointOperation(OperationType.READ,
 				new DummyOperationInvoker(), "getAll", Object.class, "Test operation",
 				Collections.emptyList());
-		EndpointInfo<JmxEndpointOperation> endpoint = new EndpointInfo<>("test", true,
-				Collections.singletonList(operation));
+		EndpointInfo<JmxEndpointOperation> endpoint = new EndpointInfo<>("test",
+				DefaultEnablement.ENABLED, Collections.singletonList(operation));
 		EndpointMBeanInfo endpointMBeanInfo = this.mBeanInfoAssembler
 				.createEndpointMBeanInfo(endpoint);
 		assertThat(endpointMBeanInfo).isNotNull();
@@ -77,8 +78,8 @@ public class EndpointMBeanInfoAssemblerTests {
 				new DummyOperationInvoker(), "update", Object.class, "Update operation",
 				Collections.singletonList(new JmxEndpointOperationParameterInfo("test",
 						String.class, "Test argument")));
-		EndpointInfo<JmxEndpointOperation> endpoint = new EndpointInfo<>("another", true,
-				Collections.singletonList(operation));
+		EndpointInfo<JmxEndpointOperation> endpoint = new EndpointInfo<>("another",
+				DefaultEnablement.ENABLED, Collections.singletonList(operation));
 		EndpointMBeanInfo endpointMBeanInfo = this.mBeanInfoAssembler
 				.createEndpointMBeanInfo(endpoint);
 		assertThat(endpointMBeanInfo).isNotNull();

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/jmx/annotation/JmxAnnotationEndpointDiscovererTests.java

@@ -26,11 +26,11 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.ReflectiveOperationInvoker;
 import org.springframework.boot.actuate.endpoint.annotation.DeleteOperation;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
 import org.springframework.boot.actuate.endpoint.annotation.WriteOperation;
 import org.springframework.boot.actuate.endpoint.cache.CachingConfiguration;

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/EndpointLinksResolverTests.java

@@ -23,6 +23,7 @@ import java.util.Map;
 import org.assertj.core.api.Condition;
 import org.junit.Test;
 
+import org.springframework.boot.actuate.endpoint.DefaultEnablement;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.OperationType;
 
@@ -59,7 +60,8 @@ public class EndpointLinksResolverTests {
 	public void resolvedLinksContainsALinkForEachEndpointOperation() {
 		Map<String, Link> links = this.linksResolver
 				.resolveLinks(
-						Arrays.asList(new EndpointInfo<>("alpha", true,
+						Arrays.asList(new EndpointInfo<>("alpha",
+								DefaultEnablement.ENABLED,
 								Arrays.asList(operationWithPath("/alpha", "alpha"),
 										operationWithPath("/alpha/{name}",
 												"alpha-name")))),

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/WebAnnotationEndpointDiscovererTests.java

@@ -32,11 +32,11 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
+import org.springframework.boot.actuate.endpoint.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.EndpointInfo;
 import org.springframework.boot.actuate.endpoint.OperationInvoker;
 import org.springframework.boot.actuate.endpoint.annotation.DeleteOperation;
 import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
-import org.springframework.boot.actuate.endpoint.annotation.EndpointExposure;
 import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
 import org.springframework.boot.actuate.endpoint.annotation.Selector;
 import org.springframework.boot.actuate.endpoint.annotation.WriteOperation;

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessor.java

@@ -367,10 +367,8 @@ public class ConfigurationMetadataAnnotationProcessor extends AbstractProcessor
 		if (endpointId == null || "".equals(endpointId)) {
 			return; // Can't process that endpoint
 		}
-		Boolean enabledByDefault = (Boolean) elementValues.get("enabledByDefault");
-		if (enabledByDefault == null) {
-			enabledByDefault = Boolean.TRUE;
-		}
+		Boolean enabledByDefault = determineEnabledByDefault(elementValues.get(
+				"defaultEnablement"));
 		String type = this.typeUtils.getQualifiedName(element);
 		this.metadataCollector
 				.add(ItemMetadata.newGroup(endpointKey(endpointId), type, type, null));
@@ -395,8 +393,21 @@ public class ConfigurationMetadataAnnotationProcessor extends AbstractProcessor
 					endpointKey(endpointId + ".web"), "enabled", Boolean.class.getName(),
 					type, null, String.format("Expose the %s endpoint as a Web endpoint.",
 							endpointId),
-					false, null));
+					enabledByDefault, null));
+		}
+	}
+
+	private Boolean determineEnabledByDefault(Object defaultEnablement) {
+		if (defaultEnablement != null) {
+			String value = String.valueOf(defaultEnablement);
+			if ("ENABLED".equals(value)) {
+				return true;
+			}
+			if ("DISABLED".equals(value)) {
+				return false;
+			}
 		}
+		return null;
 	}
 
 	private String endpointKey(String suffix) {

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

@@ -38,6 +38,7 @@ import org.springframework.boot.configurationprocessor.metadata.Metadata;
 import org.springframework.boot.configurationprocessor.metadata.TestJsonConverter;
 import org.springframework.boot.configurationsample.endpoint.CustomPropertiesEndpoint;
 import org.springframework.boot.configurationsample.endpoint.DisabledEndpoint;
+import org.springframework.boot.configurationsample.endpoint.EnabledEndpoint;
 import org.springframework.boot.configurationsample.endpoint.OnlyJmxEndpoint;
 import org.springframework.boot.configurationsample.endpoint.OnlyWebEndpoint;
 import org.springframework.boot.configurationsample.endpoint.SimpleEndpoint;
@@ -538,9 +539,9 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		ConfigurationMetadata metadata = compile(SimpleEndpoint.class);
 		assertThat(metadata).has(
 				Metadata.withGroup("endpoints.simple").fromSource(SimpleEndpoint.class));
-		assertThat(metadata).has(enabledFlag("simple", true));
-		assertThat(metadata).has(jmxEnabledFlag("simple", true));
-		assertThat(metadata).has(webEnabledFlag("simple", false));
+		assertThat(metadata).has(enabledFlag("simple", null));
+		assertThat(metadata).has(jmxEnabledFlag("simple", null));
+		assertThat(metadata).has(webEnabledFlag("simple", null));
 		assertThat(metadata).has(cacheTtl("simple"));
 		assertThat(metadata.getItems()).hasSize(5);
 	}
@@ -557,6 +558,18 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		assertThat(metadata.getItems()).hasSize(5);
 	}
 
+	@Test
+	public void enabledEndpoint() throws IOException {
+		ConfigurationMetadata metadata = compile(EnabledEndpoint.class);
+		assertThat(metadata).has(Metadata.withGroup("endpoints.enabled")
+				.fromSource(EnabledEndpoint.class));
+		assertThat(metadata).has(enabledFlag("enabled", true));
+		assertThat(metadata).has(jmxEnabledFlag("enabled", true));
+		assertThat(metadata).has(webEnabledFlag("enabled", true));
+		assertThat(metadata).has(cacheTtl("enabled"));
+		assertThat(metadata.getItems()).hasSize(5);
+	}
+
 	@Test
 	public void customPropertiesEndpoint() throws IOException {
 		ConfigurationMetadata metadata = compile(CustomPropertiesEndpoint.class);
@@ -564,9 +577,9 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 				.fromSource(CustomPropertiesEndpoint.class));
 		assertThat(metadata).has(Metadata.withProperty("endpoints.customprops.name")
 				.ofType(String.class).withDefaultValue("test"));
-		assertThat(metadata).has(enabledFlag("customprops", true));
-		assertThat(metadata).has(jmxEnabledFlag("customprops", true));
-		assertThat(metadata).has(webEnabledFlag("customprops", false));
+		assertThat(metadata).has(enabledFlag("customprops", null));
+		assertThat(metadata).has(jmxEnabledFlag("customprops", null));
+		assertThat(metadata).has(webEnabledFlag("customprops", null));
 		assertThat(metadata).has(cacheTtl("customprops"));
 		assertThat(metadata.getItems()).hasSize(6);
 	}
@@ -576,8 +589,8 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		ConfigurationMetadata metadata = compile(OnlyJmxEndpoint.class);
 		assertThat(metadata).has(
 				Metadata.withGroup("endpoints.jmx").fromSource(OnlyJmxEndpoint.class));
-		assertThat(metadata).has(enabledFlag("jmx", true));
-		assertThat(metadata).has(jmxEnabledFlag("jmx", true));
+		assertThat(metadata).has(enabledFlag("jmx", null));
+		assertThat(metadata).has(jmxEnabledFlag("jmx", null));
 		assertThat(metadata).has(cacheTtl("jmx"));
 		assertThat(metadata.getItems()).hasSize(4);
 	}
@@ -587,8 +600,8 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		ConfigurationMetadata metadata = compile(OnlyWebEndpoint.class);
 		assertThat(metadata).has(
 				Metadata.withGroup("endpoints.web").fromSource(OnlyWebEndpoint.class));
-		assertThat(metadata).has(enabledFlag("web", true));
-		assertThat(metadata).has(webEnabledFlag("web", false));
+		assertThat(metadata).has(enabledFlag("web", null));
+		assertThat(metadata).has(webEnabledFlag("web", null));
 		assertThat(metadata).has(cacheTtl("web"));
 		assertThat(metadata.getItems()).hasSize(4);
 	}
@@ -600,13 +613,14 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		ConfigurationMetadata metadata = project.fullBuild();
 		assertThat(metadata).has(Metadata.withGroup("endpoints.incremental")
 				.fromSource(IncrementalEndpoint.class));
-		assertThat(metadata).has(enabledFlag("incremental", true));
-		assertThat(metadata).has(jmxEnabledFlag("incremental", true));
-		assertThat(metadata).has(webEnabledFlag("incremental", false));
+		assertThat(metadata).has(enabledFlag("incremental", null));
+		assertThat(metadata).has(jmxEnabledFlag("incremental", null));
+		assertThat(metadata).has(webEnabledFlag("incremental", null));
 		assertThat(metadata).has(cacheTtl("incremental"));
 		assertThat(metadata.getItems()).hasSize(5);
 		project.replaceText(IncrementalEndpoint.class, "id = \"incremental\"",
-				"id = \"incremental\", enabledByDefault = false");
+				"id = \"incremental\", defaultEnablement = org.springframework.boot."
+						+ "configurationsample.DefaultEnablement.DISABLED");
 		metadata = project.incrementalBuild(IncrementalEndpoint.class);
 		assertThat(metadata).has(Metadata.withGroup("endpoints.incremental")
 				.fromSource(IncrementalEndpoint.class));
@@ -624,9 +638,9 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		ConfigurationMetadata metadata = project.fullBuild();
 		assertThat(metadata).has(Metadata.withGroup("endpoints.incremental")
 				.fromSource(IncrementalEndpoint.class));
-		assertThat(metadata).has(enabledFlag("incremental", true));
-		assertThat(metadata).has(jmxEnabledFlag("incremental", true));
-		assertThat(metadata).has(webEnabledFlag("incremental", false));
+		assertThat(metadata).has(enabledFlag("incremental", null));
+		assertThat(metadata).has(jmxEnabledFlag("incremental", null));
+		assertThat(metadata).has(webEnabledFlag("incremental", null));
 		assertThat(metadata).has(cacheTtl("incremental"));
 		assertThat(metadata.getItems()).hasSize(5);
 		project.replaceText(IncrementalEndpoint.class, "id = \"incremental\"",
@@ -635,8 +649,8 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		metadata = project.incrementalBuild(IncrementalEndpoint.class);
 		assertThat(metadata).has(Metadata.withGroup("endpoints.incremental")
 				.fromSource(IncrementalEndpoint.class));
-		assertThat(metadata).has(enabledFlag("incremental", true));
-		assertThat(metadata).has(webEnabledFlag("incremental", false));
+		assertThat(metadata).has(enabledFlag("incremental", null));
+		assertThat(metadata).has(webEnabledFlag("incremental", null));
 		assertThat(metadata).has(cacheTtl("incremental"));
 		assertThat(metadata.getItems()).hasSize(4);
 	}
@@ -648,8 +662,8 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		ConfigurationMetadata metadata = project.fullBuild();
 		assertThat(metadata).has(Metadata.withGroup("endpoints.incremental")
 				.fromSource(IncrementalJmxEndpoint.class));
-		assertThat(metadata).has(enabledFlag("incremental", true));
-		assertThat(metadata).has(jmxEnabledFlag("incremental", true));
+		assertThat(metadata).has(enabledFlag("incremental", null));
+		assertThat(metadata).has(jmxEnabledFlag("incremental", null));
 		assertThat(metadata).has(cacheTtl("incremental"));
 		assertThat(metadata.getItems()).hasSize(4);
 		project.replaceText(IncrementalJmxEndpoint.class,
@@ -657,29 +671,29 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		metadata = project.incrementalBuild(IncrementalJmxEndpoint.class);
 		assertThat(metadata).has(Metadata.withGroup("endpoints.incremental")
 				.fromSource(IncrementalJmxEndpoint.class));
-		assertThat(metadata).has(enabledFlag("incremental", true));
-		assertThat(metadata).has(jmxEnabledFlag("incremental", true));
-		assertThat(metadata).has(webEnabledFlag("incremental", false));
+		assertThat(metadata).has(enabledFlag("incremental", null));
+		assertThat(metadata).has(jmxEnabledFlag("incremental", null));
+		assertThat(metadata).has(webEnabledFlag("incremental", null));
 		assertThat(metadata).has(cacheTtl("incremental"));
 		assertThat(metadata.getItems()).hasSize(5);
 	}
 
 	private Metadata.MetadataItemCondition enabledFlag(String endpointId,
-			boolean defaultValue) {
+			Boolean defaultValue) {
 		return Metadata.withEnabledFlag("endpoints." + endpointId + ".enabled")
 				.withDefaultValue(defaultValue)
 				.withDescription(String.format("Enable the %s endpoint.", endpointId));
 	}
 
 	private Metadata.MetadataItemCondition jmxEnabledFlag(String endpointId,
-			boolean defaultValue) {
+			Boolean defaultValue) {
 		return Metadata.withEnabledFlag("endpoints." + endpointId + ".jmx.enabled")
 				.withDefaultValue(defaultValue).withDescription(String
 						.format("Expose the %s endpoint as a JMX MBean.", endpointId));
 	}
 
 	private Metadata.MetadataItemCondition webEnabledFlag(String endpointId,
-			boolean defaultValue) {
+			Boolean defaultValue) {
 		return Metadata.withEnabledFlag("endpoints." + endpointId + ".web.enabled")
 				.withDefaultValue(defaultValue).withDescription(String
 						.format("Expose the %s endpoint as a Web endpoint.", endpointId));

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

+/*
+ * Copyright 2012-2017 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.boot.configurationsample;
+
+public enum DefaultEnablement {
+
+	ENABLED, DISABLED, NEUTRAL
+}

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

@@ -35,7 +35,7 @@ public @interface Endpoint {
 
 	String id();
 
-	boolean enabledByDefault() default true;
+	DefaultEnablement defaultEnablement() default DefaultEnablement.NEUTRAL;
 
 	EndpointExposure[] exposure() default {};
 

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/endpoint/DisabledEndpoint.java

@@ -16,14 +16,15 @@
 
 package org.springframework.boot.configurationsample.endpoint;
 
+import org.springframework.boot.configurationsample.DefaultEnablement;
 import org.springframework.boot.configurationsample.Endpoint;
 
 /**
- * An endpoint that is disabled by default.
+ * An endpoint that is disabled unless configured explicitly.
  *
  * @author Stephane Nicoll
  */
-@Endpoint(id = "disabled", enabledByDefault = false)
+@Endpoint(id = "disabled", defaultEnablement = DefaultEnablement.DISABLED)
 public class DisabledEndpoint {
 
 }

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/endpoint/EnabledEndpoint.java

+/*
+ * Copyright 2012-2017 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.boot.configurationsample.endpoint;
+
+import org.springframework.boot.configurationsample.DefaultEnablement;
+import org.springframework.boot.configurationsample.Endpoint;
+
+/**
+ * An endpoint that is enabled unless configured explicitly..
+ *
+ * @author Stephane Nicoll
+ */
+@Endpoint(id = "enabled", defaultEnablement = DefaultEnablement.ENABLED)
+public class EnabledEndpoint {
+
+}