1 package net.avcompris.commons3.utils;
2
3 import static com.google.common.base.Preconditions.checkNotNull;
4 import static org.apache.commons.lang3.StringUtils.isBlank;
5
6 public abstract class EnvUtils {
7
8 public static String getEnvProperty(final String propertyName, final String sampleValue) {
9
10 checkNotNull(propertyName, "propertyName");
11 checkNotNull(sampleValue, "sampleValue");
12
13 final String propertyValue = System.getProperty(propertyName);
14
15 if (isBlank(propertyValue)) {
16
17 throw new RuntimeException("Cannot read environment property: " + propertyName
18 + ", it should be of the form: \"" + sampleValue + "\", but was: " + propertyValue);
19 }
20
21 return propertyValue;
22 }
23 }