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use crate::config::Config;
use anyhow::Error as AnyhowError;
use dtos::*;
use libangelshark::{AcmRunner, Message, ParallelIterator};
use log::debug;
use std::convert::Infallible;
use warp::{
body,
hyper::{header, StatusCode},
path, post,
reply::{self, with},
Filter, Rejection, Reply,
};
mod dtos;
/// GET / -> Name and version # of app.
pub fn index() -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
path::end().and_then(handle_version)
}
/// POST /ossi with JSON inputs -> JSON outputs
pub fn ossi(config: &Config) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
let runner = config.runner.clone();
path("ossi")
.and(post())
.and(warp::query::<Query>())
.and(json_body())
.and(with_runner(runner))
.and_then(handle_ossi)
.with(with::header(header::PRAGMA, "no-cache"))
.with(with::header(header::CACHE_CONTROL, "no-store, max-age=0"))
.with(with::header(header::X_FRAME_OPTIONS, "DENY"))
}
/// For passing runner to handlers.
fn with_runner(
runner: AcmRunner,
) -> impl Filter<Extract = (AcmRunner,), Error = Infallible> + Clone {
warp::any().map(move || runner.clone())
}
/// JSON request body filter with content length limit.
fn json_body() -> impl Filter<Extract = (Vec<Request>,), Error = Rejection> + Clone {
body::content_length_limit(1024 * 16).and(body::json())
}
/// Handle version requests.
async fn handle_version() -> Result<impl Reply, Infallible> {
Ok(reply::json(&Version {
daemon_version: env!("CARGO_PKG_VERSION"),
}))
}
/// Handle OSSI requests.
async fn handle_ossi(
query: Query,
requests: Vec<Request>,
mut runner: AcmRunner,
) -> Result<impl Reply, Infallible> {
debug!("{:?}", query);
debug!("{:?}", requests);
// Queue request inputs on runner.
for (job_name, input) in requests
.into_iter()
.map(|r| -> Vec<(String, Message)> { r.into() })
.flatten()
{
runner.queue_input(&job_name, &input);
}
// Collect runner results and convert to responses.
let responses: Vec<Result<Vec<Response>, AnyhowError>> = if query.no_cache.unwrap_or_default() {
// Run without cache.
runner
.run()
.map(|(name, output)| {
let output: Vec<Response> = output?
.into_iter()
.filter_map(move |o| {
if o.command == "logoff" {
None
} else {
Some(Response::from((name.clone(), o)))
}
})
.collect();
Ok(output)
})
.collect()
} else {
// Run with cache.
runner
.run_cached()
.map(|(name, output)| {
let output: Vec<Response> = output?
.into_iter()
.filter_map(move |o| {
if o.command == "logoff" {
None
} else {
Some(Response::from((name.clone(), o)))
}
})
.collect();
Ok(output)
})
.collect()
};
// Handle errors from runner.
if query.panicky.unwrap_or_default() {
// Return an internal error if anything went wrong.
let responses: Result<Vec<Vec<Response>>, _> = responses.into_iter().collect();
match responses {
Err(e) => Ok(reply::with_status(
reply::json(&Error {
reason: e.to_string(),
}),
StatusCode::INTERNAL_SERVER_ERROR,
)),
Ok(r) => Ok(reply::with_status(
reply::json(&r.into_iter().flatten().collect::<Vec<Response>>()),
StatusCode::OK,
)),
}
} else {
// Discard errors and return just good data.
let responses: Vec<Response> = responses
.into_iter()
.filter_map(|r| r.ok())
.flatten()
.collect();
Ok(reply::with_status(reply::json(&responses), StatusCode::OK))
}
}
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