rustecal-types-serde

rustecal-types-serde provides Serde-based message wrappers for JSON, CBOR, and MessagePack to use with the typed eCAL Pub/Sub API.

Features

• JsonMessage, CborMessage, MsgpackMessage: per-format wrappers
• Implements PublisherMessage and SubscriberMessage for seamless integration
• Zero-copy payloads via Arc<T>
• Minimal dependencies: serde, serde_json, serde_cbor, rmp-serde, rustecal-core, rustecal-pubsub

Installation

Add to your workspace Cargo.toml:

[dependencies]
rustecal-types-serde = "0.1"

Usage

Publisher Example (JSON)

use serde::{Serialize, Deserialize};
use rustecal::{Ecal, EcalComponents, TypedPublisher};
use rustecal_types_serde::JsonMessage;

#[derive(Serialize, Deserialize, Clone, Debug)]
struct MyData {
    msg: String,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    Ecal::initialize(Some("json publisher"), EcalComponents::DEFAULT, None)?;

    let publisher = TypedPublisher::<JsonMessage<MyData>>::new("hello_json")?;

    while Ecal::ok() {
        let payload = MyData { msg: "Hello from Rust".into() };
        let message = JsonMessage::new(payload);
        publisher.send(&message, Timestamp::Auto);

        std::thread::sleep(std::time::Duration::from_millis(500));
    }

    Ecal::finalize();
    Ok(())
}

Subscriber Example (JSON)

use serde::{Serialize, Deserialize};
use rustecal::{Ecal, EcalComponents, TypedSubscriber};
use rustecal_types_serde::JsonMessage;

#[derive(Serialize, Deserialize, Clone, Debug)]
struct MyData {
    msg: String,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    Ecal::initialize(Some("json subscriber"), EcalComponents::DEFAULT, None)?;

    let mut subscriber = TypedSubscriber::<JsonMessage<MyData>>::new("hello_json")?;
    subscriber.set_callback(|message| {
        println!("Received: {}", message.payload.data.msg);
    });

    while Ecal::ok() {
        std::thread::sleep(std::time::Duration::from_millis(500));
    }

    Ecal::finalize();
    Ok(())
}

Traits Reference

• PublisherMessage

  • datatype() -> DataTypeInfo
  • to_bytes(&self) -> Arc<[u8]>

• SubscriberMessage

  • datatype() -> DataTypeInfo
  • from_bytes(bytes: Arc<[u8]>, _info: &DataTypeInfo) -> Option<Self>

See Also

• rustecal-types-bytes for raw binary data messages
• rustecal-types-protobuf for Protobuf-based messages
• rustecal-types-string for UTF-8 string messages
• Examples in the rustecal-samples/pubsub directory