lights: Re-write example service in Rust
Add a re-implementation of the Lights HAL example service in Rust. This
was originally written as the start of a Cuttlefish specific
implementation of this service, but it's simple / small enough that
replacing the current Android C++ one with it shouldn't bring in any
trouble while providing yet another Rust service example to the tree.
Tested: built VtsHalLightTargetTest and ran in Cuttlefish
Bug: 286106270
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a796fb113c405838424e61fd0b4cd6e0ef86c5a7)
Change-Id: I01eaf9ce7c6086e1429f52ff4f7f92cebc5360b6
diff --git a/light/aidl/default/main.rs b/light/aidl/default/main.rs
new file mode 100644
index 0000000..ffe33fe
--- /dev/null
+++ b/light/aidl/default/main.rs
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+//! This implements the Lights Example Service.
+
+use android_hardware_light::aidl::android::hardware::light::ILights::{BnLights, ILights};
+use binder::BinderFeatures;
+
+mod lights;
+use lights::LightsService;
+
+const LOG_TAG: &str = "lights_service_example_rust";
+
+use log::Level;
+
+fn main() {
+ let logger_success = logger::init(
+ logger::Config::default().with_tag_on_device(LOG_TAG).with_min_level(Level::Trace),
+ );
+ if !logger_success {
+ panic!("{LOG_TAG}: Failed to start logger.");
+ }
+
+ binder::ProcessState::set_thread_pool_max_thread_count(0);
+
+ let lights_service = LightsService;
+ let lights_service_binder = BnLights::new_binder(lights_service, BinderFeatures::default());
+
+ let service_name = format!("{}/default", LightsService::get_descriptor());
+ binder::add_service(&service_name, lights_service_binder.as_binder())
+ .expect("Failed to register service");
+
+ binder::ProcessState::join_thread_pool()
+}