Constellation, Spacedust, Slingshot, UFOs: atproto crates and services for microcosm
shutdown setup
i don't think jetstream is quite doing graceful disconnect messages yet but
author
phil
date
(Mar 7, 2025, 12:17 PM -0500)
commit
f744a480
f744a4807db01f4f87d8854b2b2e0d863b310f7d
parent
83a4e283
83a4e283ac0dfcb0164736879d80f290fd2752d1
+50
-12
+2
Cargo.lock
+2
Cargo.lock
+2
ufos/Cargo.toml
+2
ufos/Cargo.toml
+46
-12
ufos/src/main.rs
+46
-12
ufos/src/main.rs
···
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use std::path::PathBuf;
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use std::time::{Duration, Instant};
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+
use tokio::select;
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use tokio_util::sync::CancellationToken;
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+
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use jetstream::{
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events::{commit::CommitEvent, JetstreamEvent::Commit},
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DefaultJetstreamEndpoints, JetstreamCompression, JetstreamConfig, JetstreamConnector,
···
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..Default::default()
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};
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let stay_alive = CancellationToken::new();
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ctrlc::set_handler({
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let mut desperation: u8 = 0;
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let stay_alive = stay_alive.clone();
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move || match desperation {
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0 => {
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println!("ok, signalling shutdown...");
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stay_alive.cancel();
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desperation += 1;
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}
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1.. => panic!("fine, panicking!"),
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}
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})?;
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+
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let jetstream: JetstreamConnector<serde_json::Value> = JetstreamConnector::new(config)?;
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let receiver = jetstream.connect().await?;
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···
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let print_throttle = Duration::from_millis(400);
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let mut last = Instant::now();
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while let Ok(event) = receiver.recv_async().await {
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if let Commit(CommitEvent::Create { commit, .. }) = event {
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let now = Instant::now();
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let since = now - last;
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if since >= print_throttle {
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let overshoot = since - print_throttle; // adjust to keep the rate on average
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last = now - overshoot;
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println!(
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"{}: {}",
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&*commit.info.collection,
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serde_json::to_string(&commit.record)?
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-
);
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loop {
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select! {
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_ = stay_alive.cancelled() => {
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eprintln!("byeeee");
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break
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}
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ev = receiver.recv_async() => {
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match ev {
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Ok(event) => {
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if let Commit(CommitEvent::Create { commit, .. }) = event {
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let now = Instant::now();
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let since = now - last;
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if since >= print_throttle {
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let overshoot = since - print_throttle; // adjust to keep the rate on average
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last = now - overshoot;
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println!(
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"{}: {}",
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&*commit.info.collection,
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serde_json::to_string(&commit.record)?
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);
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}
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}
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},
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Err(e) => {
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eprintln!("jetstream event error: {e:?}");
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break
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}
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}
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}
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}
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}
ufos/src/serialize.rs
ufos/src/serialize.rs
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