65 lines
2.3 KiB
Java
65 lines
2.3 KiB
Java
/*
|
|
* Copyright (C) 2017 The Android Open Source Project
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
package android.util;
|
|
|
|
import android.content.Context;
|
|
import android.os.SystemProperties;
|
|
import android.text.TextUtils;
|
|
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
/**
|
|
* This class is only needed to get around Robolectric issue.
|
|
*/
|
|
public class FeatureFlagUtils {
|
|
public static final String FFLAG_PREFIX = "sys.fflag.";
|
|
public static final String FFLAG_OVERRIDE_PREFIX = FFLAG_PREFIX + "override.";
|
|
|
|
/**
|
|
* Whether or not a flag is enabled.
|
|
*
|
|
* @param feature the flag name
|
|
* @return true if the flag is enabled (either by default in system, or override by user)
|
|
*/
|
|
public static boolean isEnabled(Context context, String feature) {
|
|
// Tries to get feature flag from system property.
|
|
// Step 1: check if feature flag has any override. Flag name: sys.fflag.override.<feature>
|
|
String value = SystemProperties.get(FFLAG_OVERRIDE_PREFIX + feature);
|
|
if (!TextUtils.isEmpty(value)) {
|
|
return Boolean.parseBoolean(value);
|
|
}
|
|
// Step 2: check if feature flag has any default value. Flag name: sys.fflag.<feature>
|
|
value = SystemProperties.get(FFLAG_PREFIX + feature);
|
|
return Boolean.parseBoolean(value);
|
|
}
|
|
|
|
/**
|
|
* Override feature flag to new state.
|
|
*/
|
|
public static void setEnabled(String feature, boolean enabled) {
|
|
SystemProperties.set(FFLAG_OVERRIDE_PREFIX + feature, enabled ? "true" : "false");
|
|
}
|
|
|
|
public static Map<String, String> getAllFeatureFlags() {
|
|
final Map<String, String> features = new HashMap<>();
|
|
features.put(FFLAG_PREFIX + "abc", "false");
|
|
features.put(FFLAG_OVERRIDE_PREFIX + "abc", "true");
|
|
return features;
|
|
}
|
|
}
|