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use async_trait::async_trait;
use std::fmt::Debug;
#[cfg(feature = "file-transport")]
use std::io::Result as IoResult;
#[cfg(feature = "file-transport")]
use std::path::Path;
#[cfg(all(
feature = "smtp-transport",
any(feature = "tokio1", feature = "async-std1")
))]
use crate::transport::smtp::client::AsyncSmtpConnection;
#[cfg(all(
feature = "smtp-transport",
any(feature = "tokio1", feature = "async-std1")
))]
use crate::transport::smtp::client::Tls;
#[cfg(all(
feature = "smtp-transport",
any(feature = "tokio1", feature = "async-std1")
))]
use crate::transport::smtp::extension::ClientId;
#[cfg(all(
feature = "smtp-transport",
any(feature = "tokio1", feature = "async-std1")
))]
use crate::transport::smtp::Error;
#[cfg_attr(docsrs, doc(cfg(any(feature = "tokio1", feature = "async-std1"))))]
#[async_trait]
pub trait Executor: Debug + Send + Sync + private::Sealed {
#[doc(hidden)]
#[cfg(feature = "smtp-transport")]
async fn connect(
hostname: &str,
port: u16,
hello_name: &ClientId,
tls: &Tls,
) -> Result<AsyncSmtpConnection, Error>;
#[doc(hidden)]
#[cfg(feature = "file-transport-envelope")]
async fn fs_read(path: &Path) -> IoResult<Vec<u8>>;
#[doc(hidden)]
#[cfg(feature = "file-transport")]
async fn fs_write(path: &Path, contents: &[u8]) -> IoResult<()>;
}
#[allow(missing_copy_implementations)]
#[non_exhaustive]
#[cfg(feature = "tokio1")]
#[cfg_attr(docsrs, doc(cfg(feature = "tokio1")))]
#[derive(Debug)]
pub struct Tokio1Executor;
#[async_trait]
#[cfg(feature = "tokio1")]
impl Executor for Tokio1Executor {
#[doc(hidden)]
#[cfg(feature = "smtp-transport")]
async fn connect(
hostname: &str,
port: u16,
hello_name: &ClientId,
tls: &Tls,
) -> Result<AsyncSmtpConnection, Error> {
#[allow(clippy::match_single_binding)]
let tls_parameters = match tls {
#[cfg(any(feature = "tokio1-native-tls", feature = "tokio1-rustls-tls"))]
Tls::Wrapper(ref tls_parameters) => Some(tls_parameters.clone()),
_ => None,
};
#[allow(unused_mut)]
let mut conn =
AsyncSmtpConnection::connect_tokio1(hostname, port, hello_name, tls_parameters).await?;
#[cfg(any(feature = "tokio1-native-tls", feature = "tokio1-rustls-tls"))]
match tls {
Tls::Opportunistic(ref tls_parameters) => {
if conn.can_starttls() {
conn.starttls(tls_parameters.clone(), hello_name).await?;
}
}
Tls::Required(ref tls_parameters) => {
conn.starttls(tls_parameters.clone(), hello_name).await?;
}
_ => (),
}
Ok(conn)
}
#[doc(hidden)]
#[cfg(feature = "file-transport-envelope")]
async fn fs_read(path: &Path) -> IoResult<Vec<u8>> {
tokio1_crate::fs::read(path).await
}
#[doc(hidden)]
#[cfg(feature = "file-transport")]
async fn fs_write(path: &Path, contents: &[u8]) -> IoResult<()> {
tokio1_crate::fs::write(path, contents).await
}
}
#[allow(missing_copy_implementations)]
#[non_exhaustive]
#[cfg(feature = "async-std1")]
#[cfg_attr(docsrs, doc(cfg(feature = "async-std1")))]
#[derive(Debug)]
pub struct AsyncStd1Executor;
#[async_trait]
#[cfg(feature = "async-std1")]
impl Executor for AsyncStd1Executor {
#[doc(hidden)]
#[cfg(feature = "smtp-transport")]
async fn connect(
hostname: &str,
port: u16,
hello_name: &ClientId,
tls: &Tls,
) -> Result<AsyncSmtpConnection, Error> {
#[allow(clippy::match_single_binding)]
let tls_parameters = match tls {
#[cfg(any(feature = "async-std1-native-tls", feature = "async-std1-rustls-tls"))]
Tls::Wrapper(ref tls_parameters) => Some(tls_parameters.clone()),
_ => None,
};
#[allow(unused_mut)]
let mut conn =
AsyncSmtpConnection::connect_asyncstd1(hostname, port, hello_name, tls_parameters)
.await?;
#[cfg(any(feature = "async-std1-native-tls", feature = "async-std1-rustls-tls"))]
match tls {
Tls::Opportunistic(ref tls_parameters) => {
if conn.can_starttls() {
conn.starttls(tls_parameters.clone(), hello_name).await?;
}
}
Tls::Required(ref tls_parameters) => {
conn.starttls(tls_parameters.clone(), hello_name).await?;
}
_ => (),
}
Ok(conn)
}
#[doc(hidden)]
#[cfg(feature = "file-transport-envelope")]
async fn fs_read(path: &Path) -> IoResult<Vec<u8>> {
async_std::fs::read(path).await
}
#[doc(hidden)]
#[cfg(feature = "file-transport")]
async fn fs_write(path: &Path, contents: &[u8]) -> IoResult<()> {
async_std::fs::write(path, contents).await
}
}
mod private {
use super::*;
pub trait Sealed {}
#[cfg(feature = "tokio1")]
impl Sealed for Tokio1Executor {}
#[cfg(feature = "async-std1")]
impl Sealed for AsyncStd1Executor {}
}