72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#[cfg(windows)]
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use std::error::Error;
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#[cfg(windows)]
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fn main() -> Result<(), Box<dyn Error>> {
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use std::{
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env,
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fs::OpenOptions,
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os::windows::{
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fs::OpenOptionsExt,
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io::{FromRawHandle, IntoRawHandle},
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},
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time::Duration,
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};
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use mio::{windows::NamedPipe, Events, Interest, Poll, Token};
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use windows_sys::Win32::Storage::FileSystem::FILE_FLAG_OVERLAPPED;
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let args: Vec<String> = env::args().collect();
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let address = args
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.get(1)
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.ok_or("First argument must be shims address to read logs (\\\\.\\pipe\\containerd-shim-{ns}-{id}-log) ")
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.unwrap();
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println!("Reading logs from: {}", &address);
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let mut opts = OpenOptions::new();
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opts.read(true)
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.write(true)
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.custom_flags(FILE_FLAG_OVERLAPPED);
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let file = opts.open(address).unwrap();
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let mut client = unsafe { NamedPipe::from_raw_handle(file.into_raw_handle()) };
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let mut stdio = std::io::stdout();
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let mut poll = Poll::new().unwrap();
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poll.registry()
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.register(&mut client, Token(1), Interest::READABLE)
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.unwrap();
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let mut events = Events::with_capacity(128);
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loop {
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poll.poll(&mut events, Some(Duration::from_millis(10)))
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.unwrap();
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match std::io::copy(&mut client, &mut stdio) {
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Ok(_) => break,
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Err(_) => continue,
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}
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}
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Ok(())
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}
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#[cfg(unix)]
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fn main() {
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println!("This example is only for Windows");
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}
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