org.springframework.boot.actuate.endpoint.web.EndpointServlet Maven / Gradle / Ivy
/*
* Copyright 2012-2018 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
*
* https://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.web;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.servlet.Servlet;
import org.springframework.beans.BeanUtils;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Contains details of a servlet that is exposed as an actuator endpoint.
*
* @author Phillip Webb
*/
public final class EndpointServlet {
private final Servlet servlet;
private final Map initParameters;
public EndpointServlet(Class servlet) {
Assert.notNull(servlet, "Servlet must not be null");
this.servlet = BeanUtils.instantiateClass(servlet);
this.initParameters = Collections.emptyMap();
}
public EndpointServlet(Servlet servlet) {
Assert.notNull(servlet, "Servlet must not be null");
this.servlet = servlet;
this.initParameters = Collections.emptyMap();
}
private EndpointServlet(Servlet servlet, Map initParameters) {
this.servlet = servlet;
this.initParameters = Collections.unmodifiableMap(initParameters);
}
public EndpointServlet withInitParameter(String name, String value) {
Assert.hasText(name, "Name must not be empty");
return withInitParameters(Collections.singletonMap(name, value));
}
public EndpointServlet withInitParameters(Map initParameters) {
Assert.notNull(initParameters, "InitParameters must not be null");
boolean hasEmptyName = initParameters.keySet().stream()
.anyMatch((name) -> !StringUtils.hasText(name));
Assert.isTrue(!hasEmptyName, "InitParameters must not contain empty names");
Map mergedInitParameters = new LinkedHashMap<>(
this.initParameters);
mergedInitParameters.putAll(initParameters);
return new EndpointServlet(this.servlet, mergedInitParameters);
}
Servlet getServlet() {
return this.servlet;
}
Map getInitParameters() {
return this.initParameters;
}
}