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Server Implementation of the Language Server Protocol for Apache Camel

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/**
 * 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
 *
 *      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 com.github.cameltooling.lsp.internal.kubernetes;

import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientBuilder;
import io.fabric8.kubernetes.client.KubernetesClientException;

public class KubernetesConfigManager {

	private static final KubernetesConfigManager instance = new KubernetesConfigManager();
	
	private static KubernetesClient client;
	
	private KubernetesConfigManager() {}
	
	public static KubernetesConfigManager getInstance() {
		return instance;
	}
	
	public void setClient(KubernetesClient client) {
		KubernetesConfigManager.client = client;
	}
	
	public KubernetesClient getClient() {
		if(client == null ) {
			client = new KubernetesClientBuilder().build();
		} else {
			try {
				//Let's see if the connection is still valid
				client.namespaces().list();
			} catch (KubernetesClientException e) {
				client = new KubernetesClientBuilder().build();
			}
		}
		return client;
	}
	
}