|
| 1 | +use anyhow::Result; |
| 2 | +use futures::{ |
| 3 | + // channel::mpsc::channel, |
| 4 | + SinkExt, |
| 5 | + StreamExt, |
| 6 | + TryStreamExt, |
| 7 | +}; |
| 8 | +use iroh::{docs::DocTicket, util::path}; |
| 9 | +use notify::{ |
| 10 | + poll::ScanEvent, Config, Event, PollWatcher, RecommendedWatcher, RecursiveMode, Watcher, |
| 11 | +}; |
| 12 | +use std::{ |
| 13 | + path::{Component, Path}, |
| 14 | + str::FromStr, |
| 15 | + sync::mpsc::channel, |
| 16 | +}; |
| 17 | + |
| 18 | +/// Async, futures channel based event watching |
| 19 | +#[tokio::main] |
| 20 | +async fn main() -> Result<()> { |
| 21 | + let path = std::env::args() |
| 22 | + .nth(1) |
| 23 | + .expect("Argument 1 needs to be a path"); |
| 24 | + |
| 25 | + let mut doc_ticket = None; |
| 26 | + if let Some(ticket) = std::env::args().nth(2) { |
| 27 | + let ticket = iroh::docs::DocTicket::from_str(ticket.as_str())?; |
| 28 | + doc_ticket = Some(ticket); |
| 29 | + } |
| 30 | + println!("watching {}", path); |
| 31 | + |
| 32 | + let path = std::path::PathBuf::from(&path); |
| 33 | + let iroh_path = path.join(".iroh"); |
| 34 | + let node = iroh::node::Node::persistent(iroh_path) |
| 35 | + .await? |
| 36 | + .spawn() |
| 37 | + .await?; |
| 38 | + |
| 39 | + let doc = open_or_create_document(&node, doc_ticket).await?; |
| 40 | + let author = node.authors.create().await?; |
| 41 | + |
| 42 | + tokio::spawn(async_watch(path, doc, author)).await??; |
| 43 | + |
| 44 | + Ok(()) |
| 45 | +} |
| 46 | + |
| 47 | +async fn open_or_create_document( |
| 48 | + node: &iroh::client::MemIroh, |
| 49 | + ticket: Option<DocTicket>, |
| 50 | +) -> anyhow::Result<iroh::client::MemDoc> { |
| 51 | + let doc = match ticket { |
| 52 | + Some(ticket) => { |
| 53 | + println!("importing ticket: {:?}", ticket); |
| 54 | + node.docs.import(ticket).await? |
| 55 | + } |
| 56 | + None => { |
| 57 | + let doc = node.docs.create().await?; |
| 58 | + let ticket = doc |
| 59 | + .share( |
| 60 | + iroh::client::docs::ShareMode::Write, |
| 61 | + iroh::base::node_addr::AddrInfoOptions::Relay, |
| 62 | + ) |
| 63 | + .await?; |
| 64 | + println!( |
| 65 | + "created new doc {:?} write ticket:\n{:?}", |
| 66 | + doc.id(), |
| 67 | + ticket.to_string() |
| 68 | + ); |
| 69 | + doc |
| 70 | + } |
| 71 | + }; |
| 72 | + Ok(doc) |
| 73 | +} |
| 74 | + |
| 75 | +enum Message { |
| 76 | + Event(notify::Result<notify::Event>), |
| 77 | + Scan(ScanEvent), |
| 78 | +} |
| 79 | + |
| 80 | +async fn async_watcher() -> notify::Result<(PollWatcher, std::sync::mpsc::Receiver<Message>)> { |
| 81 | + // let (tx, rx) = tokio::sync::mpsc::channel(1000); |
| 82 | + let (tx, rx) = channel(); |
| 83 | + |
| 84 | + let tx_2 = tx.clone(); |
| 85 | + let tx_3 = tx.clone(); |
| 86 | + // use the pollwatcher and set a callback for the scanning events |
| 87 | + let watcher = PollWatcher::with_initial_scan( |
| 88 | + move |watch_event| { |
| 89 | + let tx_2 = tx_2.clone(); |
| 90 | + // tx_2.blocking_send(Message::Event(watch_event)).unwrap(); |
| 91 | + tokio::task::spawn(async move { |
| 92 | + println!("watch_event: {:?}", &watch_event); |
| 93 | + tx_2.send(Message::Event(watch_event)).unwrap(); |
| 94 | + }); |
| 95 | + }, |
| 96 | + Config::default(), |
| 97 | + move |scan_event| { |
| 98 | + // tx_3.blocking_send(Message::Scan(scan_event)); |
| 99 | + let tx_3 = tx_3.clone(); |
| 100 | + println!("scan_event: {:?}", &scan_event); |
| 101 | + tokio::task::spawn(async move { |
| 102 | + if let Err(err) = tx_3.send(Message::Scan(scan_event)) { |
| 103 | + println!("send error: {:?}", err); |
| 104 | + } |
| 105 | + }); |
| 106 | + }, |
| 107 | + )?; |
| 108 | + |
| 109 | + // let (tx, rx) = std::sync::mpsc::channel(); |
| 110 | + // let (mut tx, rx) = tokio::sync::mpsc::channel(1); |
| 111 | + |
| 112 | + // let tx_c = tx.clone(); |
| 113 | + // // use the pollwatcher and set a callback for the scanning events |
| 114 | + // let mut watcher = PollWatcher::with_initial_scan( |
| 115 | + // move |watch_event| { |
| 116 | + // (|| async { |
| 117 | + // tx_c.send(Message::Event(watch_event)).await.unwrap(); |
| 118 | + // }); |
| 119 | + // // tokio::task::spawn_blocking(move || async { |
| 120 | + // // tx_c.send(Message::Event(watch_event)).await.unwrap(); |
| 121 | + // // }); |
| 122 | + // }, |
| 123 | + // Config::default(), |
| 124 | + // move |scan_event| { |
| 125 | + // tokio::task::block_in_place(|| async { |
| 126 | + // tx.send(Message::Scan(scan_event)).await.unwrap(); |
| 127 | + // }); |
| 128 | + // }, |
| 129 | + // )?; |
| 130 | + |
| 131 | + // // Automatically select the best implementation for your platform. |
| 132 | + // // You can also access each implementation directly e.g. INotifyWatcher. |
| 133 | + // let watcher = RecommendedWatcher::new( |
| 134 | + // move |res| { |
| 135 | + // futures::executor::block_on(async { |
| 136 | + // tx.send(res).await.unwrap(); |
| 137 | + // }) |
| 138 | + // }, |
| 139 | + // Config::default(), |
| 140 | + // )?; |
| 141 | + |
| 142 | + Ok((watcher, rx)) |
| 143 | +} |
| 144 | + |
| 145 | +// fn block_on<F: Future<Output = T>, T>(rt: &tokio::runtime::Handle, fut: F) -> T { |
| 146 | +// tokio::task::block_in_place(move || match tokio::runtime::Handle::try_current() { |
| 147 | +// Ok(handle) => handle.block_on(fut), |
| 148 | +// Err(_) => rt.block_on(fut), |
| 149 | +// }) |
| 150 | +// } |
| 151 | + |
| 152 | +async fn async_watch<P: AsRef<Path>>( |
| 153 | + path: P, |
| 154 | + doc: iroh::client::MemDoc, |
| 155 | + author: iroh::docs::AuthorId, |
| 156 | +) -> anyhow::Result<()> { |
| 157 | + let (mut watcher, mut rx) = async_watcher().await?; |
| 158 | + |
| 159 | + // Add a path to be watched. All files and directories at that path and |
| 160 | + // below will be monitored for changes. |
| 161 | + watcher.watch(path.as_ref(), RecursiveMode::Recursive)?; |
| 162 | + |
| 163 | + while let res = rx.recv()? { |
| 164 | + match res { |
| 165 | + Message::Event(Ok(event)) => { |
| 166 | + println!("event: {:?}", event); |
| 167 | + for path in event.paths { |
| 168 | + let path = path.canonicalize()?; |
| 169 | + |
| 170 | + if path.is_file() { |
| 171 | + // let key = canonicalized_path_to_bytes(&path, true)?; |
| 172 | + let key = bytes::Bytes::from(path.display().to_string()); |
| 173 | + doc.import_file(author, key, &path, true) |
| 174 | + .await? |
| 175 | + .finish() |
| 176 | + .await?; |
| 177 | + } |
| 178 | + } |
| 179 | + } |
| 180 | + Message::Event(Err(e)) => { |
| 181 | + println!("watch error: {:?}", e); |
| 182 | + } |
| 183 | + Message::Scan(event) => { |
| 184 | + println!("scan: {:?}", event); |
| 185 | + let path = event?.canonicalize()?; |
| 186 | + if path.is_file() { |
| 187 | + // let key = canonicalized_path_to_bytes(&path, true)?; |
| 188 | + let key = bytes::Bytes::from(path.display().to_string()); |
| 189 | + doc.import_file(author, key, &path, true) |
| 190 | + .await? |
| 191 | + .finish() |
| 192 | + .await?; |
| 193 | + } |
| 194 | + } |
| 195 | + } |
| 196 | + } |
| 197 | + |
| 198 | + Ok(()) |
| 199 | +} |
| 200 | + |
| 201 | +/// This function converts an already canonicalized path to a string. |
| 202 | +/// |
| 203 | +/// If `must_be_relative` is true, the function will fail if any component of the path is |
| 204 | +/// `Component::RootDir` |
| 205 | +/// |
| 206 | +/// This function will also fail if the path is non canonical, i.e. contains |
| 207 | +/// `..` or `.`, or if the path components contain any windows or unix path |
| 208 | +/// separators. |
| 209 | +pub fn canonicalized_path_to_bytes( |
| 210 | + path: impl AsRef<Path>, |
| 211 | + must_be_relative: bool, |
| 212 | +) -> anyhow::Result<bytes::Bytes> { |
| 213 | + let mut path_str = String::new(); |
| 214 | + let parts = path |
| 215 | + .as_ref() |
| 216 | + .components() |
| 217 | + .filter_map(|c| match c { |
| 218 | + Component::Normal(x) => { |
| 219 | + let c = match x.to_str() { |
| 220 | + Some(c) => c, |
| 221 | + None => return Some(Err(anyhow::anyhow!("invalid character in path"))), |
| 222 | + }; |
| 223 | + |
| 224 | + if !c.contains('/') && !c.contains('\\') { |
| 225 | + Some(Ok(c)) |
| 226 | + } else { |
| 227 | + Some(Err(anyhow::anyhow!("invalid path component {:?}", c))) |
| 228 | + } |
| 229 | + } |
| 230 | + Component::RootDir => { |
| 231 | + if must_be_relative { |
| 232 | + Some(Err(anyhow::anyhow!("invalid path component {:?}", c))) |
| 233 | + } else { |
| 234 | + path_str.push('/'); |
| 235 | + None |
| 236 | + } |
| 237 | + } |
| 238 | + _ => Some(Err(anyhow::anyhow!("invalid path component {:?}", c))), |
| 239 | + }) |
| 240 | + .collect::<anyhow::Result<Vec<_>>>()?; |
| 241 | + let parts = parts.join("/"); |
| 242 | + path_str.push_str(&parts); |
| 243 | + let path_bytes = bytes::Bytes::from(path_str); |
| 244 | + Ok(path_bytes) |
| 245 | +} |
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