iggy_common 0.11.0-edge.2

Iggy is the persistent message streaming platform written in Rust, supporting QUIC, TCP and HTTP transport protocols, capable of processing millions of messages per second.
Documentation 
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

use crate::Identifier;
use crate::error::IggyError;
use crate::types::message::IggyMessage;
use std::fmt::Debug;

/// The trait represent the logic responsible for calculating the partition ID and is used by the `IggyClient`.
/// This might be especially useful when the partition ID is not constant and might be calculated based on the stream ID, topic ID and other parameters.
pub trait Partitioner: Send + Sync + Debug {
    fn calculate_partition_id(
        &self,
        stream_id: &Identifier,
        topic_id: &Identifier,
        messages: &[IggyMessage],
    ) -> Result<u32, IggyError>;
}