1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2023 Nordix Foundation.
* ================================================================================
* 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
*
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.so.cnfm.lcm.bpmn.flows.extclients.kubernetes;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.Reader;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.onap.so.cnfm.lcm.bpmn.flows.exceptions.KubeConfigFileProcessingException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import io.kubernetes.client.openapi.ApiClient;
import io.kubernetes.client.util.ClientBuilder;
import io.kubernetes.client.util.KubeConfig;
/**
*
* @author Waqas Ikram (waqas.ikram@est.tech)
*
*/
@Component
@Scope(value = ConfigurableBeanFactory.SCOPE_SINGLETON)
public class KubernetesClientProviderImpl implements KubernetesClientProvider {
private static final Logger logger = LoggerFactory.getLogger(KubernetesClientProviderImpl.class);
private static final Map<String, ApiClient> INSTANCES = new ConcurrentHashMap<>();
@Override
public ApiClient getApiClient(final String kubeConfigPath) {
ApiClient client = INSTANCES.get(kubeConfigPath.toString());
if (client == null) {
synchronized (this) {
try (final Reader input = new FileReader(kubeConfigPath);) {
logger.debug("{} Loading kube-config file", kubeConfigPath);
final KubeConfig kubeConfig = KubeConfig.loadKubeConfig(input);
logger.debug("{} kube-config loaded successfully", kubeConfigPath);
client = ClientBuilder.kubeconfig(kubeConfig).build();
logger.debug("ApiClient created successfully");
INSTANCES.put(kubeConfigPath, client);
} catch (final FileNotFoundException fileNotFoundException) {
logger.error("{} KubeConfig not found", kubeConfigPath, fileNotFoundException);
throw new KubeConfigFileProcessingException(kubeConfigPath + " kube-config file not found",
fileNotFoundException);
} catch (final Exception exception) {
final String message = "Unexpected exception while processing kube-config file";
logger.error(message, exception);
throw new KubeConfigFileProcessingException(message, exception);
}
}
}
logger.debug("Found ApiClient for {}", kubeConfigPath);
return client;
}
@Override
public void closeApiClient(final String kubeConfigFile) {
final ApiClient client = INSTANCES.get(kubeConfigFile);
if (client != null) {
logger.debug("Closing ApiClient and removing it from local cache for {}", kubeConfigFile);
INSTANCES.remove(kubeConfigFile);
}
}
}
|
