org.jclouds.ohai.servlet.suppliers.ServletContextSupplier Maven / Gradle / Ivy

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/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds licenses this file
 * to you 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.jclouds.ohai.servlet.suppliers;

import javax.inject.Inject;
import javax.inject.Singleton;
import javax.servlet.ServletContext;

import org.jclouds.domain.JsonBall;

import com.google.common.base.Supplier;

/**
 * 
 * @author Adrian Cole
 */
@Singleton
public abstract class ServletContextSupplier implements Supplier {
	private final ServletContext servletContext;

	@Inject
	public ServletContextSupplier(ServletContext servletContext) {
		this.servletContext = servletContext;
	}

	@Override
	public JsonBall get() {
		String path = servletContext.getContextPath();
		if (path == null || path.equals(""))
			path = "/";
		return new JsonBall(String.format("{\"%s\":%s}", path,
				provideJson(servletContext)));
	}

	protected abstract String provideJson(ServletContext servletContext);
}