adk-rs 0.6.0

Rust port of the Google Agent Development Kit (ADK).
Documentation 
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//! Server-Sent Events helpers for Gemini streaming.

use futures::stream::StreamExt;

use crate::core::LlmResponseStream;
use crate::error::ProviderError;

use crate::providers::gemini::convert;

/// Convert a reqwest streaming body into an [`LlmResponseStream`].
pub(crate) fn from_sse(resp: reqwest::Response) -> LlmResponseStream {
    use eventsource_stream::Eventsource;
    let bytes = resp
        .bytes_stream()
        .map(|r| r.map_err(|e| std::io::Error::other(e.to_string())));
    // `eventsource_stream::Eventsource` wants an `impl Stream<Item = Result<Bytes, std::io::Error>>`.
    let evs = bytes.eventsource();
    let mapped = evs.filter_map(|ev| async move {
        match ev {
            Ok(e) if !e.data.is_empty() => match convert::parse_stream_chunk(&e.data) {
                Ok(r) => Some(Ok(r)),
                Err(err) => Some(Err(err)),
            },
            Ok(_) => None,
            Err(e) => Some(Err(crate::error::Error::Provider(ProviderError::Stream(
                e.to_string(),
            )))),
        }
    });
    Box::pin(mapped) as LlmResponseStream
}

#[cfg(test)]
pub(crate) fn collect_stream(
    s: LlmResponseStream,
) -> impl std::future::Future<Output = crate::error::Result<Vec<crate::core::LlmResponse>>> + Send {
    use futures::TryStreamExt;
    s.try_collect::<Vec<_>>()
}