72 lines
1.6 KiB
Rust
72 lines
1.6 KiB
Rust
use std::borrow::Borrow;
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use axum::extract::State;
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use conduit::{err, result::LogErr, utils::IterStream, Result};
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use futures::{FutureExt, StreamExt, TryStreamExt};
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use ruma::api::federation::event::get_room_state;
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use super::AccessCheck;
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use crate::Ruma;
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/// # `GET /_matrix/federation/v1/state/{roomId}`
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///
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/// Retrieves a snapshot of a room's state at a given event.
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pub(crate) async fn get_room_state_route(
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State(services): State<crate::State>, body: Ruma<get_room_state::v1::Request>,
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) -> Result<get_room_state::v1::Response> {
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AccessCheck {
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services: &services,
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origin: body.origin(),
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room_id: &body.room_id,
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event_id: None,
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}
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.check()
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.await?;
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let shortstatehash = services
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.rooms
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.state_accessor
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.pdu_shortstatehash(&body.event_id)
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.await
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.map_err(|_| err!(Request(NotFound("PDU state not found."))))?;
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let pdus = services
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.rooms
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.state_accessor
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.state_full_ids(shortstatehash)
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.await
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.log_err()
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.map_err(|_| err!(Request(NotFound("PDU state IDs not found."))))?
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.values()
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.try_stream()
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.and_then(|id| services.rooms.timeline.get_pdu_json(id))
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.and_then(|pdu| {
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services
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.sending
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.convert_to_outgoing_federation_event(pdu)
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.map(Ok)
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})
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.try_collect()
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.await?;
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let auth_chain = services
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.rooms
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.auth_chain
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.event_ids_iter(&body.room_id, &[body.event_id.borrow()])
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.await?
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.map(Ok)
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.and_then(|id| async move { services.rooms.timeline.get_pdu_json(&id).await })
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.and_then(|pdu| {
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services
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.sending
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.convert_to_outgoing_federation_event(pdu)
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.map(Ok)
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})
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.try_collect()
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.await?;
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Ok(get_room_state::v1::Response {
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auth_chain,
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pdus,
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})
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}
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