01 /*
02 * Copyright 2008-2014 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 griffon.util.TypeUtils.castToBoolean;
23 import static java.util.Objects.requireNonNull;
24
25 /**
26 * @author Andres Almiray
27 */
28 public class Feature {
29 private static final String ERROR_FEATURE_NAME_BLANK = "Argument 'featureName' cannot be blank";
30
31 public static boolean isFeatureEnabled(@Nonnull String featureName) {
32 requireNonBlank(featureName, ERROR_FEATURE_NAME_BLANK);
33 if (!isBlank(System.getProperty(featureName))) {
34 return Boolean.getBoolean(featureName);
35 }
36 return !isBlank(Metadata.getCurrent().getProperty(featureName)) &&
37 castToBoolean(Metadata.getCurrent().getProperty(featureName));
38 }
39
40 public static void setFeatureEnabled(@Nonnull String featureName, boolean enabled) {
41 requireNonBlank(featureName, ERROR_FEATURE_NAME_BLANK);
42 System.setProperty(featureName, String.valueOf(enabled));
43 }
44
45 public static void withFeature(@Nonnull String featureName, @Nonnull Runnable runnable) {
46 requireNonNull(runnable, "Argument 'runnable' cannot be null");
47 if (isFeatureEnabled(featureName)) {
48 runnable.run();
49 }
50 }
51 }
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