Replace tarpc dependency with directly using tokio-serde

While tarpc works nicely, it pulls in a number of dependencies through its opentelemetry support, which prevents packaging the event-broker in Fedora. This switches to using tokio-serde directly for RPC. Signed-off-by: Daiki Ueno <[email protected]>
latchset · Nov 18, 2023 · 695e8fb · 695e8fb
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diff --git a/Cargo.lock b/Cargo.lock
diff --git a/README.md b/README.md
@@ -213,4 +213,3 @@ You can open the generated `flamegraph.html` with your browser.
 
 - [libbpf-async](https://github.com/fujita/libbpf-async) for asynchronous BPF ringbuf implementation over libbpf-rs
 - [rust-keylime](https://github.com/keylime/rust-keylime/) for permissions management code
-- [tarpc](https://github.com/google/tarpc) for the pubsub example implementation
diff --git a/crypto-auditing/Cargo.toml b/crypto-auditing/Cargo.toml
@@ -12,11 +12,11 @@ libc = "0.2"
 serde = { version = "1.0", features = ["derive"] }
 serde_cbor = "0.11"
 serde_with = "2.2"
-tarpc = { version = "0.33", features = ["serde-transport", "unix"] }
 thiserror = "1.0"
 tokio = "1.23"
 tokio-serde = { version = "0.8", features=["cbor"] }
 tokio-stream = "0.1"
+tokio-util = { version = "0.7", features=["codec"] }
 tracing = "0.1"
 
 [build-dependencies]

diff --git a/crypto-auditing/src/event_broker.rs b/crypto-auditing/src/event_broker.rs
@@ -4,8 +4,6 @@
 mod error;
 pub use error::{Error, Result};
 
-mod service;
-
 mod client;
 pub use client::{Client, ClientHandle};