yoi/resources/plugin/templates/rust-component-instance/src/lib.rs

86 lines
2.3 KiB
Rust

use serde::{Deserialize, Serialize};
use serde_json::{json, Value};
use yoi_plugin_pdk::wit_bindgen;
use yoi_plugin_pdk::{
export_plugin_instance, Plugin, PluginIngressEvent, PluginStatus, ServiceOutput, ToolError,
ToolOutput,
};
wit_bindgen::generate!({
world: "instance",
path: "../../../../resources/plugin/wit",
generate_all,
runtime_path: "yoi_plugin_pdk::wit_bindgen::rt",
});
#[derive(Default)]
struct ExamplePlugin {
count: u64,
}
#[derive(Deserialize)]
struct EchoInput {
text: String,
}
#[derive(Serialize)]
struct EchoOutput {
text: String,
count: u64,
}
impl Plugin for ExamplePlugin {
fn start(config: Value) -> Result<Self, ToolError> {
Ok(Self {
count: config.get("start_count").and_then(Value::as_u64).unwrap_or(0),
})
}
fn handle_tool(&mut self, name: &str, input: Value) -> Result<ToolOutput, ToolError> {
if name != "example_echo" {
return Err(ToolError::invalid_input(format!("unknown tool: {name}")));
}
let input: EchoInput =
serde_json::from_value(input).map_err(|err| ToolError::invalid_input(err.to_string()))?;
self.count += 1;
ToolOutput::json(
format!("echoed {} bytes", input.text.len()),
EchoOutput {
text: input.text,
count: self.count,
},
)
}
fn handle_ingress(
&mut self,
name: &str,
event: PluginIngressEvent,
) -> Result<ServiceOutput, ToolError> {
if name != "example_ws" {
return Ok(ServiceOutput::accepted(json!({ "ignored": name }))?);
}
let Some(text) = event.websocket_text() else {
return Ok(ServiceOutput::accepted(json!({
"accepted": true,
"kind": event.kind,
}))?);
};
self.count += 1;
ServiceOutput::websocket_send(
&event,
format!("example-reply-{}", self.count),
event.source.strip_prefix("websocket:").unwrap_or(&event.source),
format!("echo({}): {text}", self.count),
)
}
fn status(&self) -> Result<PluginStatus, ToolError> {
Ok(PluginStatus::ready(json!({ "count": self.count })))
}
}
export_plugin_instance!(ExamplePluginComponent, ExamplePlugin);