core/sdk/src/http/streams.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::http::http_client::HttpClient;
use crate::http::http_transport::HttpTransport;
use crate::http::path::encode_segment;
use crate::prelude::Identifier;
use crate::prelude::IggyError;
use async_trait::async_trait;
use iggy_common::create_stream::CreateStream;
use iggy_common::{
    OptionInputMap, Stream, StreamClient, StreamCreateOptions, StreamDetails, StreamUpdateOptions,
};

const PATH: &str = "/streams";

#[async_trait]
impl StreamClient for HttpClient {
    async fn get_stream(&self, stream_id: &Identifier) -> Result<Option<StreamDetails>, IggyError> {
        let response = self.get(&get_details_path(&stream_id.as_cow_str())).await;
        if let Err(error) = response {
            if matches!(error, IggyError::ResourceNotFound(_)) {
                return Ok(None);
            }

            return Err(error);
        }

        let stream = response?
            .json()
            .await
            .map_err(|_| IggyError::InvalidJsonResponse)?;
        Ok(Some(stream))
    }

    async fn get_streams(&self) -> Result<Vec<Stream>, IggyError> {
        let response = self.get(PATH).await?;
        let streams = response
            .json()
            .await
            .map_err(|_| IggyError::InvalidJsonResponse)?;
        Ok(streams)
    }

    async fn create_stream(
        &self,
        name: &str,
        options: &StreamCreateOptions,
    ) -> Result<StreamDetails, IggyError> {
        // The options erase on drop, the JSON body the HTTP client serializes does not.
        let response = self
            .post(
                PATH,
                &CreateStream {
                    name: name.to_string(),
                    options: OptionInputMap(options.to_input_map()?),
                },
            )
            .await?;
        let stream = response
            .json()
            .await
            .map_err(|_| IggyError::InvalidJsonResponse)?;
        Ok(stream)
    }

    async fn update_stream(
        &self,
        stream_id: &Identifier,
        options: &StreamUpdateOptions,
    ) -> Result<(), IggyError> {
        self.put(
            &get_details_path(&stream_id.as_cow_str()),
            &options.to_update_body()?,
        )
        .await?;
        Ok(())
    }

    async fn delete_stream(&self, stream_id: &Identifier) -> Result<(), IggyError> {
        self.delete(&get_details_path(&stream_id.as_cow_str()))
            .await?;
        self.send_contexts.invalidate_topic_discovery();
        Ok(())
    }
}

fn get_details_path(stream_id: &str) -> String {
    format!("{PATH}/{}", encode_segment(stream_id))
}