01 /*
02 * Copyright 2008-2016 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core.env;
17
18 import javax.annotation.Nonnull;
19
20 import static griffon.util.GriffonNameUtils.isBlank;
21 import static griffon.util.GriffonNameUtils.requireNonBlank;
22 import static java.util.Objects.requireNonNull;
23
24 /**
25 * @author Andres Almiray
26 */
27 public class Feature {
28 private static final String ERROR_FEATURE_NAME_BLANK = "Argument 'featureName' cannot be blank";
29
30 public static boolean isFeatureEnabled(@Nonnull String featureName) {
31 requireNonBlank(featureName, ERROR_FEATURE_NAME_BLANK);
32 return !isBlank(System.getProperty(featureName)) && Boolean.getBoolean(featureName);
33 }
34
35 public static void setFeatureEnabled(@Nonnull String featureName, boolean enabled) {
36 requireNonBlank(featureName, ERROR_FEATURE_NAME_BLANK);
37 System.setProperty(featureName, String.valueOf(enabled));
38 }
39
40 public static void withFeature(@Nonnull String featureName, @Nonnull Runnable runnable) {
41 requireNonNull(runnable, "Argument 'runnable' cannot be null");
42 if (isFeatureEnabled(featureName)) {
43 runnable.run();
44 }
45 }
46 }
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