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0.1.0 |
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0.0.1 |
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#5 in #barley
48 downloads per month
11KB
238 lines
barley-proc
This crate provides the procedural macros for the barley workflow engine.
All functions from barley-proc
are re-exported with barley-runtime
. Since the runtime is essential anyway, this crate should not be imported directly. Use the barley-runtime
crate instead.
Usage
use barley_runtime::*;
use async_trait::async_trait;
use std::sync::Arc;
use tokio::sync::RwLock;
#[barley_action]
#[derive(Default)]
struct Print {
message: String
}
impl Print {
fn new(message: String) -> Self {
// `Default` is required to set the internal
// barley state.
Self { message, ..Default::default() }
}
}
#[barley_action]
#[async_trait]
impl Action for Print {
async fn check(&self, ctx: Arc<RwLock<Context>>) -> Result<bool> {
Ok(false)
}
async fn perform(&mut self, ctx: Arc<RwLock<Context>>) -> Result<Option<ActionOutput>> {
println!("{}", self.message);
Ok(None)
}
async fn rollback(&mut self, ctx: Arc<RwLock<Context>>) -> Result<()> {
Ok(())
}
}
Dependencies
~285–740KB
~17K SLoC