Struct linemux::MuxedEvents
source · pub struct MuxedEvents { /* private fields */ }
Expand description
Manages filesystem event watches, and can be polled to receive new events.
Internally, MuxedEvents
contains a notify::Watcher
from where
filesystem events are proxied. Functionality such as async/await support,
and nonexistent file registration are added.
Implementations§
source§impl MuxedEvents
impl MuxedEvents
sourcepub async fn add_file(&mut self, path: impl Into<PathBuf>) -> Result<PathBuf>
pub async fn add_file(&mut self, path: impl Into<PathBuf>) -> Result<PathBuf>
Adds a given file to the event watch, allowing for files which do not yet exist.
Returns the canonicalized version of the path originally supplied, to
match against the one contained in each notify::Event
received.
Otherwise returns Error
for a given registration failure.
Examples found in repository?
src/reader.rs (line 194)
185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225
async fn _add_file(
&mut self,
path: impl Into<PathBuf>,
from_start: bool,
) -> io::Result<PathBuf> {
let source = path.into();
let source = if from_start {
self.events.add_file_initial_event(&source).await?
} else {
self.events.add_file(&source).await?
};
if self.reader_exists(&source) {
return Ok(source);
}
if !source.exists() {
let didnt_exist = self.inner.insert_pending(source.clone());
// If this fails it's a bug
assert!(didnt_exist);
} else {
let size = if from_start {
0
} else {
metadata(&source).await?.len()
};
let reader = new_linereader(&source, Some(size)).await?;
let inner_mut = &mut self.inner;
inner_mut.insert_reader_position(source.clone(), size);
let last = inner_mut.insert_reader(source.clone(), reader);
// If this fails it's a bug
assert!(last.is_none());
}
// TODO: prob need 'pending' for non-existent files like Events
Ok(source)
}
sourcepub async fn next_event(&mut self) -> Result<Option<Event>>
pub async fn next_event(&mut self) -> Result<Option<Event>>
Returns the next event in the stream.
Waits for the next event from the set of watched files, otherwise
returns Ok(None)
if no files were ever added, or Err
for a given
error.
Trait Implementations§
source§impl Debug for MuxedEvents
impl Debug for MuxedEvents
source§impl Stream for MuxedEvents
impl Stream for MuxedEvents
Auto Trait Implementations§
impl !RefUnwindSafe for MuxedEvents
impl Send for MuxedEvents
impl Sync for MuxedEvents
impl Unpin for MuxedEvents
impl !UnwindSafe for MuxedEvents
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