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use crate::ctx_mut;
use crate::dirs::Dirs;
use crate::error::Error;
use crate::event::Event;
use serde::de::DeserializeOwned;
use serde::Serialize;
use std::fs::File;
use std::io::{BufReader, BufWriter};
use std::net::SocketAddr;
use std::path::Path;
pub type R<T> = Result<T, Error>;
pub type ConnectTerminator = tokio::sync::mpsc::Sender<()>;
pub fn connect_terminator() -> (ConnectTerminator, tokio::sync::mpsc::Receiver<()>) {
tokio::sync::mpsc::channel(1)
}
#[cfg(any(
all(
unix,
not(any(target_os = "android", target_os = "androideabi", target_os = "ios"))
),
windows
))]
#[inline]
pub fn project_dir() -> R<Dirs> {
let dirs = directories::ProjectDirs::from("net", "MaidSafe", "quic-p2p")
.ok_or_else(|| Error::Io(::std::io::ErrorKind::NotFound.into()))?;
Ok(Dirs::Desktop(dirs))
}
#[cfg(not(any(
all(
unix,
not(any(target_os = "android", target_os = "androideabi", target_os = "ios"))
),
windows
)))]
#[inline]
pub fn project_dir() -> R<Dirs> {
Err(Error::Configuration(
"No default project dir on non-desktop platforms. User must provide an override path."
.to_string(),
))
}
#[inline]
pub fn bin_data_format(data: &[u8]) -> String {
let len = data.len();
if len < 8 {
return format!("[ {:?} ]", data);
}
format!(
"[ {:02x} {:02x} {:02x} {:02x}..{:02x} {:02x} {:02x} {:02x} ]",
data[0],
data[1],
data[2],
data[3],
data[len - 4],
data[len - 3],
data[len - 2],
data[len - 1]
)
}
#[inline]
pub fn handle_communication_err(
peer_addr: SocketAddr,
e: &Error,
details: &str,
unsent_user_msg: Option<bytes::Bytes>,
) {
debug!(
"ERROR in communication with peer {}: {:?} - {}. Details: {}",
peer_addr, e, e, details
);
ctx_mut(|c| {
let _ = c.connections.remove(&peer_addr);
if let Some(m) = unsent_user_msg {
let _ = c
.event_tx
.send(Event::UnsentUserMessage { peer_addr, msg: m });
}
});
}
pub fn read_from_disk<D>(file_path: &Path) -> R<D>
where
D: DeserializeOwned,
{
Ok(File::open(file_path)
.map_err(Into::into)
.map(BufReader::new)
.and_then(|mut rdr| bincode::deserialize_from(&mut rdr))?)
}
pub fn write_to_disk<S>(file_path: &Path, s: &S) -> R<()>
where
S: Serialize,
{
File::create(file_path)
.map_err(Into::into)
.map(BufWriter::new)
.and_then(|mut rdr| bincode::serialize_into(&mut rdr, s))?;
Ok(())
}