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use std::{
fs::File,
io::{self, copy, Cursor, Error, ErrorKind},
process::Command,
time::Duration,
};
use hyper::{body::Bytes, client::HttpConnector, Body, Client, Method, Request, Response};
use hyper_tls::HttpsConnector;
use tokio::time::timeout;
use url::Url;
pub fn create_get(url: &str, path: &str) -> io::Result<Request<Body>> {
let uri = match join_uri(url, path) {
Ok(u) => u,
Err(e) => return Err(e),
};
let req = match Request::builder()
.method(Method::GET)
.uri(uri.as_str())
.body(Body::empty())
{
Ok(r) => r,
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to create request {}", e),
));
}
};
Ok(req)
}
const JSON_CONTENT_TYPE: &str = "application/json";
pub fn create_json_post(url: &str, path: &str, d: &str) -> io::Result<Request<Body>> {
let uri = join_uri(url, path)?;
let req = match Request::builder()
.method(Method::POST)
.header("content-type", JSON_CONTENT_TYPE)
.uri(uri.as_str())
.body(Body::from(String::from(d)))
{
Ok(r) => r,
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to create request {}", e),
));
}
};
Ok(req)
}
pub async fn read_bytes(
req: Request<Body>,
timeout_dur: Duration,
is_https: bool,
check_status_code: bool,
) -> io::Result<Bytes> {
let resp = send_req(req, timeout_dur, is_https).await?;
if !resp.status().is_success() {
log::warn!(
"unexpected HTTP response code {} (server error {})",
resp.status(),
resp.status().is_server_error()
);
if check_status_code {
return Err(Error::new(
ErrorKind::Other,
format!(
"unexpected HTTP response code {} (server error {})",
resp.status(),
resp.status().is_server_error()
),
));
}
}
let future_task = hyper::body::to_bytes(resp);
let ret = timeout(timeout_dur, future_task).await;
let bytes;
match ret {
Ok(result) => match result {
Ok(b) => bytes = b,
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to read response {}", e),
));
}
},
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to read response {}", e),
));
}
}
Ok(bytes)
}
async fn send_req(
req: Request<Body>,
timeout_dur: Duration,
is_https: bool,
) -> io::Result<Response<Body>> {
let mut connector = HttpConnector::new();
connector.set_connect_timeout(Some(Duration::from_secs(5)));
let task = {
if !is_https {
let cli = Client::builder().build(connector);
cli.request(req)
} else {
let https_connector = HttpsConnector::new_with_connector(connector);
let cli = Client::builder().build(https_connector);
cli.request(req)
}
};
let res = timeout(timeout_dur, task).await?;
match res {
Ok(resp) => Ok(resp),
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to fetch response {}", e),
))
}
}
}
#[test]
fn test_read_bytes_timeout() {
let _ = env_logger::builder()
.filter_level(log::LevelFilter::Info)
.is_test(true)
.try_init();
macro_rules! ab {
($e:expr) => {
tokio_test::block_on($e)
};
}
let ret = join_uri("http://localhost:12", "invalid");
assert!(ret.is_ok());
let u = ret.unwrap();
let u = u.to_string();
let ret = Request::builder()
.method(hyper::Method::POST)
.uri(u)
.body(Body::empty());
assert!(ret.is_ok());
let req = ret.unwrap();
let ret = ab!(read_bytes(req, Duration::from_secs(1), false, true));
assert!(!ret.is_ok());
}
pub fn join_uri(url: &str, path: &str) -> io::Result<Url> {
let mut uri = match Url::parse(url) {
Ok(u) => u,
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to parse client URL {}", e),
))
}
};
if !path.is_empty() {
match uri.join(path) {
Ok(u) => uri = u,
Err(e) => {
return Err(Error::new(
ErrorKind::Other,
format!("failed to join parsed URL {}", e),
));
}
}
}
Ok(uri)
}
#[test]
fn test_join_uri() {
let ret = Url::parse("http://localhost:9850/ext/X/sendMultiple");
let expected = ret.unwrap();
let ret = join_uri("http://localhost:9850/", "/ext/X/sendMultiple");
assert!(ret.is_ok());
let t = ret.unwrap();
assert_eq!(t, expected);
let ret = join_uri("http://localhost:9850", "/ext/X/sendMultiple");
assert!(ret.is_ok());
let t = ret.unwrap();
assert_eq!(t, expected);
let ret = join_uri("http://localhost:9850", "ext/X/sendMultiple");
assert!(ret.is_ok());
let t = ret.unwrap();
assert_eq!(t, expected);
}
pub async fn download_file(ep: &str, file_path: &str) -> io::Result<()> {
log::info!("downloading the file via {}", ep);
let resp = reqwest::get(ep)
.await
.map_err(|e| Error::new(ErrorKind::Other, format!("failed reqwest::get {}", e)))?;
let mut content = Cursor::new(
resp.bytes()
.await
.map_err(|e| Error::new(ErrorKind::Other, format!("failed bytes {}", e)))?,
);
let mut f = File::create(file_path)?;
copy(&mut content, &mut f)?;
Ok(())
}
pub async fn get_non_tls(url: &str, url_path: &str) -> io::Result<Vec<u8>> {
let joined = join_uri(url, url_path)?;
log::debug!("non-TLS HTTP get for {:?}", joined);
let output = {
if url.starts_with("https") {
log::info!("sending via curl --insecure");
let mut cmd = Command::new("curl");
cmd.arg("--insecure");
cmd.arg(joined.as_str());
let output = cmd.output()?;
output.stdout
} else {
let req = create_get(url, url_path)?;
let buf = match read_bytes(
req,
Duration::from_secs(15),
url.starts_with("https"),
false,
)
.await
{
Ok(b) => b,
Err(e) => return Err(e),
};
buf.to_vec()
}
};
Ok(output)
}
pub async fn post_non_tls(url: &str, url_path: &str, data: &str) -> io::Result<Vec<u8>> {
let joined = join_uri(url, url_path)?;
log::debug!("non-TLS HTTP post {}-byte data to {:?}", data.len(), joined);
let output = {
if url.starts_with("https") {
log::info!("sending via curl --insecure");
let mut cmd = Command::new("curl");
cmd.arg("--insecure");
cmd.arg("-X POST");
cmd.arg("--header 'content-type:application/json;'");
cmd.arg(format!("--data '{}'", data));
cmd.arg(joined.as_str());
let output = cmd.output()?;
output.stdout
} else {
let req = create_json_post(url, url_path, data)?;
let buf = match read_bytes(req, Duration::from_secs(15), false, false).await {
Ok(b) => b,
Err(e) => return Err(e),
};
buf.to_vec()
}
};
Ok(output)
}