webmetro/src/commands/send.rs

84 lines
2.9 KiB
Rust

use bytes::Bytes;
use clap::{App, Arg, ArgMatches, SubCommand};
use futures::prelude::*;
use hyper::{client::HttpConnector, Body, Client, Request};
use std::io::{stdout, Write};
use stream::iter;
use super::{parse_time, stdin_stream};
use webmetro::{
chunk::{Chunk, WebmStream},
error::WebmetroError,
fixers::{ChunkTimecodeFixer, Throttle},
stream_parser::StreamEbml,
};
pub fn options() -> App<'static, 'static> {
SubCommand::with_name("send")
.about("PUTs WebM from stdin to a relay server.")
.arg(Arg::with_name("url")
.help("The location to upload to")
.required(true))
.arg(Arg::with_name("throttle")
.long("throttle")
.help("Slow down upload to \"real time\" speed as determined by the timestamps (useful for streaming static files)"))
.arg(Arg::with_name("skip")
.takes_value(true)
.short("s")
.long("skip")
.help("Skip approximately n seconds of content before uploading or throttling"))
.arg(Arg::with_name("take")
.takes_value(true)
.short("t")
.long("take")
.help("Stop uploading after approximately n seconds of content"))
}
type BoxedChunkStream = Box<dyn Stream<Item = Result<Chunk, WebmetroError>> + Send + Sync + Unpin>;
#[tokio::main]
pub async fn run(args: &ArgMatches) -> Result<(), WebmetroError> {
// parse args
let url_str = match args.value_of("url") {
Some(url) => String::from(url),
_ => return Err("Listen address wasn't provided".into()),
};
let start_time = parse_time(args.value_of("skip"))?.map_or(0, |s| s.as_millis());
let stop_time = parse_time(args.value_of("take"))?.map_or(std::u128::MAX, |t| t.as_millis() + start_time);
// build pipeline
let mut timecode_fixer = ChunkTimecodeFixer::new();
let mut chunk_stream: BoxedChunkStream = Box::new(
stdin_stream()
.parse_ebml()
.chunk_webm()
.map_ok(move |chunk| timecode_fixer.process(chunk))
.try_filter(move |chunk| future::ready(chunk.overlaps(start_time, stop_time))),
);
if args.is_present("throttle") {
chunk_stream = Box::new(Throttle::new(chunk_stream));
}
let chunk_stream = chunk_stream
.map_ok(|webm_chunk| iter(webm_chunk).map(Result::<Bytes, WebmetroError>::Ok))
.try_flatten()
.map_err(|err| {
warn!("{}", &err);
err
});
let request_payload = Body::wrap_stream(chunk_stream);
let request = Request::put(url_str).body(request_payload)?;
let client = Client::builder().build(HttpConnector::new());
let response = client.request(request).await?;
let mut response_stream = response.into_body();
while let Some(response_chunk) = response_stream.try_next().await? {
stdout().write_all(&response_chunk)?;
}
Ok(())
}