rocketmq-store 0.9.0

Storage layer for Apache RocketMQ in Rust.
Documentation 
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// Copyright 2023 The RocketMQ Rust Authors
//
// Licensed 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 std::sync::Arc;

use crate::base::commit_log_dispatcher::CommitLogDispatcher;
use crate::base::dispatch_request::DispatchRequest;
use crate::config::message_store_config::MessageStoreConfig;
use crate::index::index_service::IndexService;

#[derive(Clone)]
pub struct CommitLogDispatcherBuildIndex {
    index_service: IndexService,
    message_store_config: Arc<MessageStoreConfig>,
}

impl CommitLogDispatcherBuildIndex {
    pub fn new(index_service: IndexService, message_store_config: Arc<MessageStoreConfig>) -> Self {
        Self {
            index_service,
            message_store_config,
        }
    }
}

impl CommitLogDispatcher for CommitLogDispatcherBuildIndex {
    fn dispatch(&self, dispatch_request: &mut DispatchRequest) {
        if self.message_store_config.message_index_enable {
            self.index_service.build_index(dispatch_request);
        }
    }

    fn dispatch_progress_offset(&self, _commit_log_min_offset: i64) -> Option<i64> {
        self.message_store_config
            .message_index_enable
            .then(|| self.index_service.get_max_dispatch_commit_log_offset())
            .flatten()
    }
}