fix: move from std::sync fully to tokio

Fixes Relay adding

Closes https://github.com/rust-nostr/nostr/issues/533

README.md

@@ -172,8 +172,6 @@ Considering to use Calendar: https://github.com/nostr-protocol/nips/blob/master/
 
 ### Fixes
 
-- New Relay does not load until next is added
-  https://github.com/rust-nostr/nostr/issues/533
 - Handle event sending rejections (e.g. permissions)
 - Recursive filter handling
 

src/main.rs

@@ -8,18 +8,19 @@ use std::iter::once;
 use std::ops::Sub;
 use std::path::PathBuf;
 use std::str::FromStr;
-use std::sync::mpsc;
-use std::sync::mpsc::RecvTimeoutError;
-use std::sync::mpsc::Sender;
 use std::time::Duration;
 
-use colored::{ColoredString, Colorize};
+use colored::Colorize;
 use env_logger::Builder;
 use itertools::Itertools;
 use log::{debug, error, info, LevelFilter, trace, warn};
 use nostr_sdk::prelude::*;
 use nostr_sdk::TagStandard::Hashtag;
 use regex::Regex;
+use tokio::sync::mpsc;
+use tokio::sync::mpsc::Sender;
+use tokio::time::error::Elapsed;
+use tokio::time::timeout;
 use xdg::BaseDirectories;
 
 use crate::helpers::*;
@@ -80,7 +81,7 @@ impl EventSender {
         debug!("Flushing {} events from queue", self.queue.borrow().len());
         let values = self.clear();
         self.url.as_ref().map(|url| {
-            self.tx.send(MostrMessage::AddTasks(url.clone(), values)).inspect_err(|e| {
+            self.tx.try_send(MostrMessage::AddTasks(url.clone(), values)).err().map(|e| {
                 error!("Nostr communication thread failure, changes will not be persisted: {}", e)
             })
         });
@@ -193,7 +194,7 @@ async fn main() {
     ], None).await;
     info!("Subscribed to updates with {:?}", sub2);
 
-    let (tx, rx) = mpsc::channel::<MostrMessage>();
+    let (tx, mut rx) = mpsc::channel::<MostrMessage>(64);
     let tasks_for_url = |url: Option<Url>| Tasks::from(url, &tx, &keys);
     let mut relays: HashMap<Url, Tasks> =
         client.relays().await.into_keys().map(|url| (url.clone(), tasks_for_url(Some(url)))).collect();
@@ -208,9 +209,9 @@ async fn main() {
         }
 
         loop {
-            let result_received = rx.recv_timeout(Duration::from_secs(INACTVITY_DELAY));
+            let result_received = timeout(Duration::from_secs(INACTVITY_DELAY), rx.recv()).await;
             match result_received {
-                Ok(MostrMessage::NewRelay(url)) => {
+                Ok(Some(MostrMessage::NewRelay(url))) => {
                     if client.add_relay(&url).await.unwrap() {
                         match client.connect_relay(&url).await {
                             Ok(()) => info!("Connected to {url}"),
@@ -220,7 +221,7 @@ async fn main() {
                         warn!("Relay {url} already added");
                     }
                 }
-                Ok(MostrMessage::AddTasks(url, mut events)) => {
+                Ok(Some(MostrMessage::AddTasks(url, mut events))) => {
                     trace!("Queueing {:?}", &events);
                     if let Some((queue_url, mut queue_events)) = queue {
                         if queue_url == url {
@@ -237,14 +238,14 @@ async fn main() {
                         queue = Some((url, events))
                     }
                 }
-                Ok(MostrMessage::Flush) | Err(RecvTimeoutError::Timeout) => if let Some((url, events)) = queue {
+                Ok(Some(MostrMessage::Flush)) | Err(Elapsed { .. }) => if let Some((url, events)) = queue {
                     info!("Sending {} events to {url} due to {}", events.len(),
-                        result_received.map_or_else(|e| format!("{:?}", e), |m| format!("{:?}", m)));
+                        result_received.map_or("inactivity", |_| "flush message"));
                     client.batch_event_to(vec![url], events, RelaySendOptions::new()).await;
                     queue = None;
                 }
-                Err(err) => {
-                    debug!("Finalizing nostr communication thread because of {:?}: {}", err, err);
+                Ok(None) => {
+                    debug!("Finalizing nostr communication thread because communication channel was closed");
                     break;
                 }
             }
@@ -588,7 +589,7 @@ async fn main() {
                             }
                             match Url::parse(&input) {
                                 Err(e) => warn!("Failed to parse url \"{input}\": {}", e),
-                                Ok(url) => match tx.send(MostrMessage::NewRelay(url.clone())) {
+                                Ok(url) => match tx.send(MostrMessage::NewRelay(url.clone())).await {
                                     Err(e) => error!("Nostr communication thread failure, cannot add relay \"{url}\": {e}"),
                                     Ok(_) => {
                                         info!("Connecting to {url}");

src/tasks.rs

@@ -4,7 +4,6 @@ use std::io::{Error, stdout, Write};
 use std::iter::{empty, once};
 use std::ops::{Div, Rem};
 use std::str::FromStr;
-use std::sync::mpsc::Sender;
 use std::time::Duration;
 
 use chrono::Local;
@@ -105,7 +104,7 @@ impl Display for StateFilter {
 }
 
 impl Tasks {
-    pub(crate) fn from(url: Option<Url>, tx: &Sender<MostrMessage>, keys: &Keys) -> Self {
+    pub(crate) fn from(url: Option<Url>, tx: &tokio::sync::mpsc::Sender<MostrMessage>, keys: &Keys) -> Self {
         Self::with_sender(EventSender {
             url,
             tx: tx.clone(),
@@ -1093,10 +1092,10 @@ mod tasks_test {
     use super::*;
 
     fn stub_tasks() -> Tasks {
-        use std::sync::mpsc;
+        use tokio::sync::mpsc;
         use nostr_sdk::Keys;
 
-        let (tx, _rx) = mpsc::channel();
+        let (tx, _rx) = mpsc::channel(16);
         Tasks::with_sender(EventSender {
             url: None,
             tx,