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feat: guest metrics support (#46)

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* feat: initial support for idm send in daemon

* feat: implement IdmClient backend support

* feat: daemon idm now uses IdmClient

* fix: implement channel destruction propagation

* feat: implement request response idm system

* feat: implement metrics support

* proto: move metrics into GuestMetrics for reusability

* fix: log level of guest agent was trace

* feat: metrics tree with process information
This commit is contained in:
Alex Zenla
2024-04-12 00:34:46 -07:00
committed by GitHub
parent ec9060d872
commit 5e16f3149f
27 changed files with 1211 additions and 278 deletions
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37
crates/guest/src/init.rs
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@ -17,14 +17,12 @@ use std::fs::{File, OpenOptions, Permissions};
use std::io;
use std::net::{Ipv4Addr, Ipv6Addr};
use std::os::fd::AsRawFd;
use std::os::linux::fs::MetadataExt;
use std::os::unix::ffi::OsStrExt;
use std::os::unix::fs::{chroot, PermissionsExt};
use std::path::{Path, PathBuf};
use std::str::FromStr;
use sys_mount::{FilesystemType, Mount, MountFlags};
use tokio::fs;
use walkdir::WalkDir;
use crate::background::GuestBackground;
@ -88,7 +86,6 @@ impl GuestInit {
let launch = self.parse_launch_config().await?;
self.mount_new_root().await?;
self.nuke_initrd().await?;
self.bind_new_root().await?;
if let Some(hostname) = launch.hostname.clone() {
@ -271,40 +268,6 @@ impl GuestInit {
Ok(serde_json::from_str(&content)?)
}
async fn nuke_initrd(&mut self) -> Result<()> {
trace!("nuking initrd");
let initrd_dev = fs::metadata("/").await?.st_dev();
for item in WalkDir::new("/")
.same_file_system(true)
.follow_links(false)
.contents_first(true)
{
if item.is_err() {
continue;
}
let item = item?;
let metadata = match item.metadata() {
Ok(value) => value,
Err(_) => continue,
};
if metadata.st_dev() != initrd_dev {
continue;
}
if metadata.is_symlink() || metadata.is_file() {
let _ = fs::remove_file(item.path()).await;
trace!("deleting file {:?}", item.path());
} else if metadata.is_dir() {
let _ = fs::remove_dir(item.path()).await;
trace!("deleting directory {:?}", item.path());
}
}
trace!("nuked initrd");
Ok(())
}
async fn bind_new_root(&mut self) -> Result<()> {
self.mount_move_subtree(Path::new(SYS_PATH), Path::new(NEW_ROOT_SYS_PATH))
.await?;