tools/aconfig/templates/FeatureFlagsImpl.java.template

package {package_name};
// TODO(b/303773055): Remove the annotation after access issue is resolved.
import android.compat.annotation.UnsupportedAppUsage;
{{ if not is_test_mode }}
{{ if is_read_write- }}
import android.provider.DeviceConfig;
import android.provider.DeviceConfig.Properties;
{{ endif }}
/** @hide */
public final class FeatureFlagsImpl implements FeatureFlags \{
{{- if is_read_write }}
{{- for namespace_with_flags in namespace_flags }}
    private static boolean {namespace_with_flags.namespace}_is_cached = false;
{{- endfor- }}

{{ for flag in flag_elements }}
{{ if library_exported }}
{{ if flag.exported }}
    private static boolean {flag.method_name} = false;
{{ endif }}

{{ else }}

{{- if flag.is_read_write }}
    private static boolean {flag.method_name} = {flag.default_value};
{{- endif- }}
{{ endif }}
{{ endfor }}

{{ for namespace_with_flags in namespace_flags }}
    private void load_overrides_{namespace_with_flags.namespace}() \{
        try \{
            Properties properties = DeviceConfig.getProperties("{namespace_with_flags.namespace}");

            {{- for flag in namespace_with_flags.flags }}
            {{ if library_exported }}

            {{ if flag.exported }}
            {flag.method_name} =
                properties.getBoolean("{flag.device_config_flag}", false);
            {{ endif }}

            {{ else }}

            {{ if flag.is_read_write }}
            {flag.method_name} =
                properties.getBoolean("{flag.device_config_flag}", {flag.default_value});
            {{ endif }}

            {{ endif }}
            {{ endfor }}
        } catch (NullPointerException e) \{
            throw new RuntimeException(
                "Cannot read value from namespace {namespace_with_flags.namespace} "
                + "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
            );
        }
        {namespace_with_flags.namespace}_is_cached = true;
    }
{{ endfor- }}
{{ endif- }}

{{ for flag in flag_elements }}
{{ if library_exported }}

{{ if flag.exported }}
    @Override
    @UnsupportedAppUsage
    public boolean {flag.method_name}() \{
    {{ -if flag.is_read_write }}
        if (!{flag.device_config_namespace}_is_cached) \{
            load_overrides_{flag.device_config_namespace}();
        }
        return {flag.method_name};
    {{ else }}
        return {flag.default_value};
    {{ endif- }}
    }
{{ endif }}

{{ else }}
    @Override
    @UnsupportedAppUsage
    public boolean {flag.method_name}() \{
    {{ -if flag.is_read_write }}
        if (!{flag.device_config_namespace}_is_cached) \{
            load_overrides_{flag.device_config_namespace}();
        }
        return {flag.method_name};
    {{ else }}
        return {flag.default_value};
    {{ endif- }}
    }
{{ endif }}

{{ endfor }}
}
{{ else }}
{#- Generate only stub if in test mode #}
/** @hide */
public final class FeatureFlagsImpl implements FeatureFlags \{
{{ for flag in flag_elements }}
    @Override
    @UnsupportedAppUsage
    public boolean {flag.method_name}() \{
        throw new UnsupportedOperationException(
            "Method is not implemented.");
    }
{{ endfor- }}
}
{{ endif }}