forked from Vonage/vonage-java-code-snippets
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Util.java
87 lines (82 loc) · 3.28 KB
/
Util.java
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
/*
* Copyright (c) 2011-2017 Nexmo Inc
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.nexmo.quickstart;
import java.util.logging.ConsoleHandler;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This class contains utility methods designed to be statically imported into
* the quickstart main classes.
*/
public class Util {
/**
* Configures logging if the QUICKSTART_DEBUG environment variable is set.
*/
public static void configureLogging() {
String value = System.getenv("QUICKSTART_DEBUG");
if (value != null) {
Handler handler = new ConsoleHandler();
handler.setLevel(Level.FINEST);
Logger logger = Logger.getLogger("com.nexmo");
logger.setLevel(Level.FINEST);
logger.addHandler(handler);
}
}
/**
* Look up a required environment variable and throw an
* IllegalArgumentException if the variable is not set.
*
* @param key the name of the environment variable
* @return the value
*/
public static String envVar(String key) {
String value = System.getenv(key);
if (value == null) {
throw new IllegalArgumentException("You must provide the " + key + " environment variable!");
}
return value;
}
/**
* Look up a required environment variable and throw an
* IllegalArgumentException if the value is not one of "0", "1", "true", "false", "on" or "off".
*
* @param key the name of the environment variable
* @return the value
*/
public static boolean booleanEnvVar(String key) {
String stringValue = System.getenv(key);
if (stringValue == null) {
return false;
} else {
stringValue = stringValue.trim().toLowerCase();
}
if ("1".equals(stringValue) || "true".equals(stringValue) || "on".equals(stringValue)) {
return true;
} else if ("0".equals(stringValue) || "false".equals(stringValue) || "off".equals(stringValue)) {
return false;
} else {
throw new IllegalArgumentException(
String.format("The value \"%s\" could not be converted to a boolean value", stringValue));
}
}
}