blob: caee9c4db05be6ff9ffb13ac7465a95e96638cbd (
plain)
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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*-
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.controller;
import java.io.BufferedReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Map;
import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONTokener;
public class FetchDynamicConfig {
static String configFile = "/opt/app/KV-Configuration.json";
static String url = null;
static String ret_string = null;
public FetchDynamicConfig() {
}
public static void main(String[] args) {
Map<String, String> env = System.getenv();
for (String envName : env.keySet()) {
System.out.format("%s=%s%n", envName, env.get(envName));
}
if (env.containsKey("CONSUL_HOST") && env.containsKey("CONFIG_BINDING_SERVICE")
&& env.containsKey("HOSTNAME")) {
System.out.println(">>>Dynamic configuration to be fetched from ConfigBindingService");
url = env.get("CONSUL_HOST") + ":8500/v1/catalog/service/" + env.get("CONFIG_BINDING_SERVICE");
ret_string = executecurl(url);
// consul return as array
JSONTokener temp = new JSONTokener(ret_string);
JSONObject cbsjobj = (JSONObject) new JSONArray(temp).get(0);
String url_part1 = null;
if (cbsjobj.has("ServiceAddress") && cbsjobj.has("ServicePort")) {
url_part1 = cbsjobj.getString("ServiceAddress") + ":" + cbsjobj.getInt("ServicePort");
}
System.out.println("CONFIG_BINDING_SERVICE DNS RESOLVED:" + url_part1);
url = url_part1 + "/service_component/" + env.get("HOSTNAME");
ret_string = executecurl(url);
JSONObject jsonObject = new JSONObject(new JSONTokener(ret_string));
try (FileWriter file = new FileWriter(configFile)) {
file.write(jsonObject.toString());
System.out.println("Successfully Copied JSON Object to file /opt/app/KV-Configuration.json");
} catch (IOException e) {
System.out.println(
"Error in writing configuration into file /opt/app/KV-Configuration.json " + jsonObject);
e.printStackTrace();
}
}
else {
System.out.println(">>>Static configuration to be used");
}
}
public static String executecurl(String url) {
String[] command = { "curl", "-v", url };
ProcessBuilder process = new ProcessBuilder(command);
Process p;
String result = null;
try {
p = process.start();
InputStreamReader ipr = new InputStreamReader(p.getInputStream());
BufferedReader reader = new BufferedReader(ipr);
StringBuilder builder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
result = builder.toString();
System.out.println(result);
} catch (IOException e) {
System.out.print("error");
e.printStackTrace();
}
return result;
}
}
|
