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|
use std::{collections::HashMap, sync::Arc};
use crate::{database::KeyValueDatabase, service, services, utils, Error, PduEvent, Result};
use async_trait::async_trait;
use ruma::{events::StateEventType, EventId, RoomId};
#[async_trait]
impl service::rooms::state_accessor::Data for KeyValueDatabase {
async fn state_full_ids(&self, shortstatehash: u64) -> Result<HashMap<u64, Arc<EventId>>> {
let full_state = services()
.rooms
.state_compressor
.load_shortstatehash_info(shortstatehash)?
.pop()
.expect("there is always one layer")
.1;
let mut result = HashMap::new();
let mut i = 0;
for compressed in full_state.iter() {
let parsed = services()
.rooms
.state_compressor
.parse_compressed_state_event(&compressed)?;
result.insert(parsed.0, parsed.1);
i += 1;
if i % 100 == 0 {
tokio::task::yield_now().await;
}
}
Ok(result)
}
async fn state_full(
&self,
shortstatehash: u64,
) -> Result<HashMap<(StateEventType, String), Arc<PduEvent>>> {
let full_state = services()
.rooms
.state_compressor
.load_shortstatehash_info(shortstatehash)?
.pop()
.expect("there is always one layer")
.1;
let mut result = HashMap::new();
let mut i = 0;
for compressed in full_state.iter() {
let (_, eventid) = services()
.rooms
.state_compressor
.parse_compressed_state_event(&compressed)?;
if let Some(pdu) = services().rooms.timeline.get_pdu(&eventid)? {
result.insert(
(
pdu.kind.to_string().into(),
pdu.state_key
.as_ref()
.ok_or_else(|| Error::bad_database("State event has no state key."))?
.clone(),
),
pdu,
);
}
i += 1;
if i % 100 == 0 {
tokio::task::yield_now().await;
}
}
Ok(result)
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
fn state_get_id(
&self,
shortstatehash: u64,
event_type: &StateEventType,
state_key: &str,
) -> Result<Option<Arc<EventId>>> {
let shortstatekey = match services()
.rooms
.short
.get_shortstatekey(event_type, state_key)?
{
Some(s) => s,
None => return Ok(None),
};
let full_state = services()
.rooms
.state_compressor
.load_shortstatehash_info(shortstatehash)?
.pop()
.expect("there is always one layer")
.1;
Ok(full_state
.iter()
.find(|bytes| bytes.starts_with(&shortstatekey.to_be_bytes()))
.and_then(|compressed| {
services()
.rooms
.state_compressor
.parse_compressed_state_event(&compressed)
.ok()
.map(|(_, id)| id)
}))
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
fn state_get(
&self,
shortstatehash: u64,
event_type: &StateEventType,
state_key: &str,
) -> Result<Option<Arc<PduEvent>>> {
self.state_get_id(shortstatehash, event_type, state_key)?
.map_or(Ok(None), |event_id| {
services().rooms.timeline.get_pdu(&event_id)
})
}
/// Returns the state hash for this pdu.
fn pdu_shortstatehash(&self, event_id: &EventId) -> Result<Option<u64>> {
self.eventid_shorteventid
.get(event_id.as_bytes())?
.map_or(Ok(None), |shorteventid| {
self.shorteventid_shortstatehash
.get(&shorteventid)?
.map(|bytes| {
utils::u64_from_bytes(&bytes).map_err(|_| {
Error::bad_database(
"Invalid shortstatehash bytes in shorteventid_shortstatehash",
)
})
})
.transpose()
})
}
/// Returns the full room state.
async fn room_state_full(
&self,
room_id: &RoomId,
) -> Result<HashMap<(StateEventType, String), Arc<PduEvent>>> {
if let Some(current_shortstatehash) =
services().rooms.state.get_room_shortstatehash(room_id)?
{
self.state_full(current_shortstatehash).await
} else {
Ok(HashMap::new())
}
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
fn room_state_get_id(
&self,
room_id: &RoomId,
event_type: &StateEventType,
state_key: &str,
) -> Result<Option<Arc<EventId>>> {
if let Some(current_shortstatehash) =
services().rooms.state.get_room_shortstatehash(room_id)?
{
self.state_get_id(current_shortstatehash, event_type, state_key)
} else {
Ok(None)
}
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
fn room_state_get(
&self,
room_id: &RoomId,
event_type: &StateEventType,
state_key: &str,
) -> Result<Option<Arc<PduEvent>>> {
if let Some(current_shortstatehash) =
services().rooms.state.get_room_shortstatehash(room_id)?
{
self.state_get(current_shortstatehash, event_type, state_key)
} else {
Ok(None)
}
}
}
|
