From 9e6906c00c49186189d211dc96e132d85e7ff641 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Thu, 13 Jul 2023 00:51:51 -0700
Subject: reorganize the whole thing into crates/ packages

---
 ci-lib-native/src/io.rs | 174 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 174 insertions(+)
 create mode 100644 ci-lib-native/src/io.rs

(limited to 'ci-lib-native/src/io.rs')

diff --git a/ci-lib-native/src/io.rs b/ci-lib-native/src/io.rs
new file mode 100644
index 0000000..d41349c
--- /dev/null
+++ b/ci-lib-native/src/io.rs
@@ -0,0 +1,174 @@
+use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
+use futures_util::StreamExt;
+use tokio::fs::File;
+use std::io::Write;
+use tokio::fs::OpenOptions;
+use std::task::{Poll, Context};
+use std::pin::Pin;
+use std::time::{UNIX_EPOCH, SystemTime};
+use std::sync::{Arc, Mutex};
+
+#[derive(Clone)]
+pub struct VecSink {
+    body: Arc<Mutex<Vec<u8>>>,
+}
+
+impl VecSink {
+    pub fn new() -> Self {
+        Self { body: Arc::new(Mutex::new(Vec::new())) }
+    }
+
+    pub fn take_buf(&self) -> Vec<u8> {
+        std::mem::replace(&mut *self.body.lock().unwrap(), Vec::new())
+    }
+}
+
+impl tokio::io::AsyncWrite for VecSink {
+    fn poll_write(
+        self: Pin<&mut Self>,
+        cx: &mut Context,
+        buf: &[u8]
+    ) -> Poll<Result<usize, std::io::Error>> {
+        self.body.lock().unwrap().extend_from_slice(buf);
+        Poll::Ready(Ok(buf.len()))
+    }
+
+    fn poll_flush(
+        self: Pin<&mut Self>,
+        _cx: &mut Context
+    ) -> Poll<Result<(), std::io::Error>> {
+        Poll::Ready(Ok(()))
+    }
+
+    fn poll_shutdown(
+        self: Pin<&mut Self>,
+        _cx: &mut Context
+    ) -> Poll<Result<(), std::io::Error>> {
+        Poll::Ready(Ok(()))
+    }
+}
+
+pub struct ArtifactStream {
+    sender: hyper::body::Sender,
+}
+
+impl ArtifactStream {
+    pub fn new(sender: hyper::body::Sender) -> Self {
+        Self { sender }
+    }
+}
+
+impl tokio::io::AsyncWrite for ArtifactStream {
+    fn poll_write(
+        self: Pin<&mut Self>,
+        cx: &mut Context,
+        buf: &[u8]
+    ) -> Poll<Result<usize, std::io::Error>> {
+        match self.get_mut().sender.try_send_data(buf.to_vec().into()) {
+            Ok(()) => {
+                Poll::Ready(Ok(buf.len()))
+            },
+            _ => {
+                cx.waker().wake_by_ref();
+                Poll::Pending
+            }
+        }
+    }
+
+    fn poll_flush(
+        self: Pin<&mut Self>,
+        _cx: &mut Context
+    ) -> Poll<Result<(), std::io::Error>> {
+        Poll::Ready(Ok(()))
+    }
+
+    fn poll_shutdown(
+        self: Pin<&mut Self>,
+        _cx: &mut Context
+    ) -> Poll<Result<(), std::io::Error>> {
+        Poll::Ready(Ok(()))
+    }
+}
+
+
+pub struct ArtifactDescriptor {
+    job_id: u64,
+    pub artifact_id: u64,
+    file: File,
+}
+
+impl ArtifactDescriptor {
+    pub async fn new(job_id: u64, artifact_id: u64) -> Result<Self, String> {
+        // TODO: jobs should be a configurable path
+        let path = format!("artifacts/{}/{}", job_id, artifact_id);
+        let file = OpenOptions::new()
+            .read(true)
+            .write(true)
+            .create_new(true)
+            .open(&path)
+            .await
+            .map_err(|e| format!("couldn't open artifact file {}: {}", path, e))?;
+
+        Ok(ArtifactDescriptor {
+            job_id,
+            artifact_id,
+            file,
+        })
+    }
+
+    pub async fn store_all(&mut self, mut data: axum::extract::BodyStream) -> Result<(), String> {
+        loop {
+            let chunk = data.next().await;
+
+            let chunk = match chunk {
+                Some(Ok(chunk)) => chunk,
+                Some(Err(e)) => {
+                    eprintln!("error: {:?}", e);
+                    return Err(format!("error reading: {:?}", e));
+                }
+                None => {
+                    eprintln!("body done?");
+                    return Ok(());
+                }
+            };
+
+            let chunk = chunk.as_ref();
+
+            self.file.write_all(chunk).await
+                .map_err(|e| format!("failed to write: {:?}", e))?;
+        }
+    }
+}
+
+pub async fn forward_data(source: &mut (impl AsyncRead + Unpin), dest: &mut (impl AsyncWrite + Unpin)) -> Result<(), String> {
+    let mut buf = vec![0; 1024 * 1024];
+    loop {
+        let n_read = source.read(&mut buf).await
+            .map_err(|e| format!("failed to read: {:?}", e))?;
+
+        if n_read == 0 {
+            eprintln!("done reading!");
+            return Ok(());
+        }
+
+        dest.write_all(&buf[..n_read]).await
+            .map_err(|e| format!("failed to write: {:?}", e))?;
+    }
+}
+/*
+pub async fn forward_data(source: &mut (impl AsyncRead + Unpin), dest: &mut ArtifactStream) -> Result<(), String> {
+    let mut buf = vec![0; 1024 * 1024];
+    loop {
+        let n_read = source.read(&mut buf).await
+            .map_err(|e| format!("failed to read: {:?}", e))?;
+
+        if n_read == 0 {
+            eprintln!("done reading!");
+            return Ok(());
+        }
+
+        dest.sender.send_data(buf[..n_read].to_vec().into()).await
+            .map_err(|e| format!("failed to write: {:?}", e))?;
+    }
+}
+*/
-- 
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