Service Implementation

We can now implement the AIDL service:

birthday_service/src/lib.rs:

1. use com_example_birthdayservice::aidl::com::example::birthdayservice::IBirthdayService::IBirthdayService;
2. use com_example_birthdayservice::binder;

4. /// The `IBirthdayService` implementation.
5. pub struct BirthdayService;

7. impl binder::Interface for BirthdayService {}

9. impl IBirthdayService for BirthdayService {
10. fn wishHappyBirthday(&self, name: &str, years: i32) -> binder::Result<String> {
11. Ok(format!("Happy Birthday {name}, congratulations with the {years} years!"))
12. }
13. }

birthday_service/Android.bp:

1. rust_library {
2. name: "libbirthdayservice",
3. srcs: ["src/lib.rs"],
4. crate_name: "birthdayservice",
5. rustlibs: [
6. "com.example.birthdayservice-rust",
7. "libbinder_rs",
8. ],
9. }
  • Point out the path to the generated IBirthdayService trait, and explain why each of the segments is necessary.
  • TODO: What does the binder::Interface trait do? Are there methods to override? Where source?