shepherd-rs 0.2.0

Shepherd is a resilient, non-blocking orchestrator that persistently transforms and delivers data—built for remote, compute-heavy workloads.
Documentation 
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use std::error::Error;
use std::sync::Arc;

use async_trait::async_trait;
use tokio::sync::Mutex;

use crate::config::Config;
use crate::consumer::ConsumeAttempt;
use crate::consumer::consumer::ConsumeAttemptResult;
use crate::transform::{TransformAttempt, TransformRequest};
use crate::worker::worker_manager::WorkerManagerResult;

#[async_trait]
pub trait Database: Send + Sync {
    type Input;
    type Output;
    type Config: Config;

    type TransformRequest: TransformRequest<Input = Self::Input, Output = Self::Output>;
    type TransformAttempt: TransformAttempt<CallArgsType = Self::Input, ReturnType = Self::Output>;
    type ConsumeAttempt: ConsumeAttempt<ConsumeVal = Self::Output>;
    type DatabaseError: Send + Sync + Error;

    async fn new(ctx: Arc<Mutex<Self::Config>>) -> Result<Self, Self::DatabaseError>
    where
        Self: Sized;

    async fn get_dyn_configs(
        &mut self,
    ) -> Result<
        Vec<(
            <Self::Config as Config>::KeyType,
            <Self::Config as Config>::ValueType,
        )>,
        Self::DatabaseError,
    >;

    async fn register_transform_request(
        &mut self,
        request: &Self::TransformRequest,
    ) -> Result<(), Self::DatabaseError>;

    async fn register_transform_attempt(
        &mut self,
        attempt: &Self::TransformAttempt,
    ) -> Result<(), Self::DatabaseError>;

    async fn update_transform_attempt(
        &mut self,
        attempt: &WorkerManagerResult<Self::TransformAttempt>,
    ) -> Result<(), Self::DatabaseError>;

    async fn register_consume_attempt(
        &mut self,
        attempt: &Self::ConsumeAttempt,
    ) -> Result<(), Self::DatabaseError>;

    async fn update_consume_attempt(
        &mut self,
        attempt: ConsumeAttemptResult<Self::ConsumeAttempt>,
    ) -> Result<(), Self::DatabaseError>;

    async fn archive_request_with_id(
        &mut self,
        request: &<Self::TransformRequest as TransformRequest>::Identifier,
    ) -> Result<(), Self::DatabaseError>;
}