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improvement: refuse to insert events that would automatically be hidden

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This commit is contained in:
Greg Heartsfield 2023-01-15 10:01:01 -06:00
parent 703b2efe6e
commit 9d9c6c78d1
1 changed files with 9 additions and 3 deletions
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12
src/db.rs
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@ -307,7 +307,6 @@ pub async fn db_writer(
);
event_write = true
} else {
log_pool_stats("writer", &pool);
match write_event(&mut pool.get()?, &event) {
Ok(updated) => {
if updated == 0 {
@ -374,8 +373,15 @@ pub fn write_event(conn: &mut PooledConnection, e: &Event) -> Result<usize> {
let pubkey_blob: Option<Vec<u8>> = hex::decode(&e.pubkey).ok();
let delegator_blob: Option<Vec<u8>> = e.delegated_by.as_ref().and_then(|d| hex::decode(d).ok());
let event_str = serde_json::to_string(&e).ok();
// check for replaceable events that would hide this one.
// check for replaceable events that would hide this one; we won't even attempt to insert these.
if e.is_replaceable() {
let repl_count = tx.query_row(
"SELECT e.id FROM event e INDEXED BY author_index WHERE e.author=? AND e.kind=? AND e.created_at > ? LIMIT 1;",
params![pubkey_blob, e.kind, e.created_at], |row| row.get::<usize, usize>(0));
if repl_count.ok().is_some() {
return Ok(0);
}
}
// ignore if the event hash is a duplicate.
let mut ins_count = tx.execute(
"INSERT OR IGNORE INTO event (event_hash, created_at, kind, author, delegated_by, content, first_seen, hidden) VALUES (?1, ?2, ?3, ?4, ?5, ?6, strftime('%s','now'), FALSE);",