server/src/binary/handlers/topics/create_topic_handler.rs

/* 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::binary::mapper;
use crate::binary::{handlers::topics::COMPONENT, sender::SenderKind};
use crate::state::command::EntryCommand;
use crate::state::models::CreateTopicWithId;
use crate::streaming::session::Session;
use crate::streaming::systems::system::SharedSystem;
use anyhow::Result;
use error_set::ErrContext;
use iggy::error::IggyError;
use iggy::topics::create_topic::CreateTopic;
use tracing::{debug, instrument};

#[instrument(skip_all, name = "trace_create_topic", fields(iggy_user_id = session.get_user_id(), iggy_client_id = session.client_id, iggy_stream_id = command.stream_id.as_string()))]
pub async fn handle(
    mut command: CreateTopic,
    sender: &mut SenderKind,
    session: &Session,
    system: &SharedSystem,
) -> Result<(), IggyError> {
    debug!("session: {session}, command: {command}");
    let stream_id = command.stream_id.clone();
    let topic_id = command.topic_id;
    let mut system = system.write().await;
    let topic = system
            .create_topic(
                session,
                &command.stream_id,
                command.topic_id,
                &command.name,
                command.partitions_count,
                command.message_expiry,
                command.compression_algorithm,
                command.max_topic_size,
                command.replication_factor,
            )
            .await
            .with_error_context(|error| format!("{COMPONENT} (error: {error}) - failed to create topic for stream ID: {stream_id}, topic_id: {:?}",
                topic_id
            ))?;
    command.message_expiry = topic.message_expiry;
    command.max_topic_size = topic.max_topic_size;
    let topic_id = topic.topic_id;
    let response = mapper::map_topic(topic).await;

    let system = system.downgrade();
    system
        .state
        .apply(session.get_user_id(), EntryCommand::CreateTopic(CreateTopicWithId {
            topic_id,
            command
        }))
        .await
        .with_error_context(|error| {
            format!(
            "{COMPONENT} (error: {error}) - failed to apply create topic for stream ID: {stream_id}, topic_id: {:?}",
            topic_id
        )
        })?;
    sender.send_ok_response(&response).await?;
    Ok(())
}