systemready/src/main/java/org/apache/felix/systemready/impl/servlet/StatusReporter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.apache.felix.systemready.impl.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletResponse;

import org.apache.felix.systemready.CheckStatus;
import org.apache.felix.systemready.StateType;
import org.apache.felix.systemready.SystemReadyMonitor;
import org.apache.felix.systemready.SystemStatus;

class StatusReporter {
	private SystemReadyMonitor monitor;
	private StateType type;
		
	public StatusReporter(SystemReadyMonitor monitor, StateType type) {
		super();
		this.monitor = monitor;
		this.type = type;
	}

	public void reportState(HttpServletResponse response) throws IOException {
		response.setContentType("application/json");
		response.setCharacterEncoding("UTF-8");
		SystemStatus systemState = this.monitor.getStatus(type);
        if (! (systemState.getState() == CheckStatus.State.GREEN)) {
            response.setStatus(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
        }
        PrintWriter writer = response.getWriter();
        new StatusWriterJson(writer).write(systemState);
	}
}