tools/aconfig/templates/FeatureFlagsImpl.java.template

package {package_name};
{{ if not is_test_mode }}
{{ if is_read_write- }}
import android.provider.DeviceConfig;
{{ endif }}
/** @hide */
public final class FeatureFlagsImpl implements FeatureFlags \{
{{ for item in class_elements}}
    @Override
    public boolean {item.method_name}() \{
    {{ -if item.is_read_write }}
        return getValue(
            "{item.device_config_namespace}",
            "{item.device_config_flag}",
            {item.default_value}
        );
    {{ else }}
        return {item.default_value};
    {{ endif- }}
    }
{{ endfor }}
{{ if is_read_write- }}
    private boolean getValue(String nameSpace,
        String flagName, boolean defaultValue) \{
        boolean value = defaultValue;
        try \{
            value = DeviceConfig.getBoolean(
                nameSpace,
                flagName,
                defaultValue
            );
        } catch (NullPointerException e) \{
            throw new RuntimeException(
                "Cannot read value of flag " + flagName + " from DeviceConfig. " +
                "It could be that the code using flag executed " +
                "before SettingsProvider initialization. " +
                "Please use fixed read-only flag by adding " +
                "is_fixed_read_only: true in flag declaration.",
                e
            );
        }
        return value;
    }
{{ endif- }}
}
{{ else }}
{#- Generate only stub if in test mode #}
/** @hide */
public final class FeatureFlagsImpl implements FeatureFlags \{
{{ for item in class_elements}}
    @Override
    public boolean {item.method_name}() \{
        throw new UnsupportedOperationException(
            "Method is not implemented.");
    }
{{ endfor }}
}
{{ endif }}