2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2023 Nordix Foundation.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
20 package org.onap.so.cnfm.lcm.bpmn.flows.extclients.kubernetes;
22 import java.io.FileNotFoundException;
23 import java.io.FileReader;
24 import java.io.Reader;
26 import java.util.concurrent.ConcurrentHashMap;
27 import org.onap.so.cnfm.lcm.bpmn.flows.exceptions.KubeConfigFileProcessingException;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30 import org.springframework.beans.factory.config.ConfigurableBeanFactory;
31 import org.springframework.context.annotation.Scope;
32 import org.springframework.stereotype.Component;
33 import io.kubernetes.client.openapi.ApiClient;
34 import io.kubernetes.client.util.ClientBuilder;
35 import io.kubernetes.client.util.KubeConfig;
39 * @author Waqas Ikram (waqas.ikram@est.tech)
43 @Scope(value = ConfigurableBeanFactory.SCOPE_SINGLETON)
44 public class KubernetesClientProviderImpl implements KubernetesClientProvider {
45 private static final Logger logger = LoggerFactory.getLogger(KubernetesClientProviderImpl.class);
46 private static final Map<String, ApiClient> INSTANCES = new ConcurrentHashMap<>();
49 public ApiClient getApiClient(final String kubeConfigPath) {
51 ApiClient client = INSTANCES.get(kubeConfigPath.toString());
54 try (final Reader input = new FileReader(kubeConfigPath);) {
55 logger.debug("{} Loading kube-config file", kubeConfigPath);
56 final KubeConfig kubeConfig = KubeConfig.loadKubeConfig(input);
57 logger.debug("{} kube-config loaded successfully", kubeConfigPath);
58 client = ClientBuilder.kubeconfig(kubeConfig).build();
59 logger.debug("ApiClient created successfully");
60 INSTANCES.put(kubeConfigPath, client);
61 } catch (final FileNotFoundException fileNotFoundException) {
62 logger.error("{} KubeConfig not found", kubeConfigPath, fileNotFoundException);
63 throw new KubeConfigFileProcessingException(kubeConfigPath + " kube-config file not found",
64 fileNotFoundException);
65 } catch (final Exception exception) {
66 final String message = "Unexpected exception while processing kube-config file";
67 logger.error(message, exception);
68 throw new KubeConfigFileProcessingException(message, exception);
72 logger.debug("Found ApiClient for {}", kubeConfigPath);
77 public void closeApiClient(final String kubeConfigFile) {
78 final ApiClient client = INSTANCES.get(kubeConfigFile);
80 logger.debug("Closing ApiClient and removing it from local cache for {}", kubeConfigFile);
81 INSTANCES.remove(kubeConfigFile);