core/server/src/streaming/traits.rs

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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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use crate::configs::system::SystemConfig;
use crate::shard::task_registry::TaskRegistry;
use std::future::Future;
use std::rc::Rc;

// TODO: Major revision of this trait.
pub trait MainOps {
    type Namespace;
    type PollingArgs;
    type Consumer;
    type In;
    type Out;
    type Error;

    fn append_messages(
        &self,
        config: &SystemConfig,
        registry: &Rc<TaskRegistry>,
        ns: &Self::Namespace,
        input: Self::In,
    ) -> impl Future<Output = Result<(), Self::Error>>;
    fn poll_messages(
        &self,
        ns: &Self::Namespace,
        consumer: Self::Consumer,
        args: Self::PollingArgs,
    ) -> impl Future<Output = Result<Self::Out, Self::Error>>;
}