SettingsToPropertiesMapper integrate with DeviceConfig API (c4aad0e5) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/SettingsToPropertiesMapper.java

+26 −16

Original line number	Diff line number	Diff line
		@@ -19,8 +19,10 @@ package com.android.server.am;
		import android.content.ContentResolver;
		import android.database.ContentObserver;
		import android.net.Uri;
		import android.os.AsyncTask;
		import android.os.Build;
		import android.os.SystemProperties;
		import android.provider.DeviceConfig;
		import android.provider.Settings;
		import android.text.TextUtils;
		import android.util.Slog;
		@@ -61,13 +63,18 @@ class SettingsToPropertiesMapper {
		// Add the global setting you want to push to native level as experiment flag into this list.
		//
		// NOTE: please grant write permission system property prefix
		// with format persist.experiment.[experiment_category_name]. in system_server.te and grant read
		// permission in the corresponding .te file your feature belongs to.
		// with format persist.device_config.global_settings.[flag_name] in system_server.te and grant
		// read permission in the corresponding .te file your feature belongs to.
		@VisibleForTesting
		static final String[] sGlobalSettings = new String[] {
		Settings.Global.NATIVE_FLAGS_HEALTH_CHECK_ENABLED,
		};

		// All the flags under the listed DeviceConfig scopes will be synced to native level.
		//
		// NOTE: please grant write permission system property prefix
		// with format persist.device_config.[device_config_scope]. in system_server.te and grant read
		// permission in the corresponding .te file your feature belongs to.
		@VisibleForTesting
		static final String[] sDeviceConfigScopes = new String[] {
		};
		@@ -104,19 +111,31 @@ class SettingsToPropertiesMapper {
		ContentObserver co = new ContentObserver(null) {
		@Override
		public void onChange(boolean selfChange) {
		updatePropertyFromSetting(globalSetting, propName, true);
		updatePropertyFromSetting(globalSetting, propName);
		}
		};

		// only updating on starting up when no native flags reset is performed during current
		// booting.
		if (!isNativeFlagsResetPerformed()) {
		updatePropertyFromSetting(globalSetting, propName, true);
		updatePropertyFromSetting(globalSetting, propName);
		}
		mContentResolver.registerContentObserver(settingUri, false, co);
		}

		// TODO: address sDeviceConfigScopes after DeviceConfig APIs are available.
		for (String deviceConfigScope : mDeviceConfigScopes) {
		DeviceConfig.addOnPropertyChangedListener(
		deviceConfigScope,
		AsyncTask.THREAD_POOL_EXECUTOR,
		(String scope, String name, String value) -> {
		String propertyName = makePropertyName(scope, name);
		if (propertyName == null) {
		log("unable to construct system property for " + scope + "/" + name);
		return;
		}
		setProperty(propertyName, value);
		});
		}
		}

		public static SettingsToPropertiesMapper start(ContentResolver contentResolver) {
		@@ -184,15 +203,6 @@ class SettingsToPropertiesMapper {
		return propertyName;
		}

		private String getSetting(String name, boolean isGlobalSetting) {
		if (isGlobalSetting) {
		return Settings.Global.getString(mContentResolver, name);
		} else {
		// TODO: complete the code after DeviceConfig APIs implemented.
		return null;
		}
		}

		private void setProperty(String key, String value) {
		// Check if need to clear the property
		if (value == null) {
		@@ -259,8 +269,8 @@ class SettingsToPropertiesMapper {
		}

		@VisibleForTesting
		void updatePropertyFromSetting(String settingName, String propName, boolean isGlobalSetting) {
		String settingValue = getSetting(settingName, isGlobalSetting);
		void updatePropertyFromSetting(String settingName, String propName) {
		String settingValue = Settings.Global.getString(mContentResolver, settingName);
		setProperty(propName, settingValue);
		}
		}

services/tests/servicestests/src/com/android/server/am/SettingsToPropertiesMapperTest.java

+28 −6

Original line number	Diff line number	Diff line
		@@ -41,11 +41,14 @@ import java.util.Map;

		/**
		* Tests for {@link SettingsToPropertiesMapper}
		*
		* Build/Install/Run:
		* atest FrameworksServicesTests:SettingsToPropertiesMapperTest
		*/
		@RunWith(AndroidJUnit4.class)
		@SmallTest
		public class SettingsToPropertiesMapperTest {
		private static final String NAME_VALID_CHARACTERS_REGEX = "^[\\w\\.\\-@:]*$";
		private static final String NAME_VALID_CHARACTERS_REGEX = "^[\\w\\-@:]*$";
		private static final String[] TEST_MAPPING = new String[] {
		Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS
		};
		@@ -77,7 +80,28 @@ public class SettingsToPropertiesMapperTest {
		}
		if (!globalSetting.matches(NAME_VALID_CHARACTERS_REGEX)) {
		Assert.fail(globalSetting + " contains invalid characters. "
		+ "Only alphanumeric characters, '.', '-', '@', ':' and '_' are valid.");
		+ "Only alphanumeric characters, '-', '@', ':' and '_' are valid.");
		}
		}
		}

		@Test
		public void validateRegisteredDeviceConfigScopes() {
		HashSet<String> hashSet = new HashSet<>();
		for (String deviceConfigScope : SettingsToPropertiesMapper.sDeviceConfigScopes) {
		if (hashSet.contains(deviceConfigScope)) {
		Assert.fail("deviceConfigScope "
		+ deviceConfigScope
		+ " is registered more than once in "
		+ "SettingsToPropertiesMapper.sDeviceConfigScopes.");
		}
		hashSet.add(deviceConfigScope);
		if (TextUtils.isEmpty(deviceConfigScope)) {
		Assert.fail("empty deviceConfigScope registered.");
		}
		if (!deviceConfigScope.matches(NAME_VALID_CHARACTERS_REGEX)) {
		Assert.fail(deviceConfigScope + " contains invalid characters. "
		+ "Only alphanumeric characters, '-', '@', ':' and '_' are valid.");
		}
		}
		}
		@@ -98,8 +122,7 @@ public class SettingsToPropertiesMapperTest {
		Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS, "testValue2");
		mTestMapper.updatePropertyFromSetting(
		Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS,
		systemPropertyName,
		true);
		systemPropertyName);
		propValue = mTestMapper.systemPropertiesGet(systemPropertyName);
		Assert.assertEquals("testValue2", propValue);

		@@ -107,8 +130,7 @@ public class SettingsToPropertiesMapperTest {
		Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS, null);
		mTestMapper.updatePropertyFromSetting(
		Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS,
		systemPropertyName,
		true);
		systemPropertyName);
		propValue = mTestMapper.systemPropertiesGet(systemPropertyName);
		Assert.assertEquals("", propValue);
		}