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experimental features for zram and reset tor (#2299)

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* experimental features for zram and reset tor

* zram backend

---------

Co-authored-by: Aiden McClelland <me@drbonez.dev>
This commit is contained in:
Matt Hill
2023-06-09 15:47:11 -06:00
parent 71a15cf222
commit 3ccbc626ff
17 changed files with 320 additions and 1 deletions
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3
backend/src/db/model.rs
View File

@@ -80,6 +80,7 @@ impl Database {
.map(|x| format!("{x:X}"))
.join(":"),
system_start_time: Utc::now().to_rfc3339(),
zram: false,
},
package_data: AllPackageData::default(),
ui: serde_json::from_str(include_str!("../../../frontend/patchdb-ui-seed.json"))
@@ -117,6 +118,8 @@ pub struct ServerInfo {
pub pubkey: String,
pub ca_fingerprint: String,
pub system_start_time: String,
#[serde(default)]
pub zram: bool,
}
#[derive(Debug, Deserialize, Serialize, HasModel)]

1
backend/src/lib.rs
View File

@@ -85,6 +85,7 @@ pub fn main_api() -> Result<(), RpcError> {
#[command(subcommands(
system::time,
system::experimental,
system::logs,
system::kernel_logs,
system::metrics,

55
backend/src/system.rs
View File

@@ -24,6 +24,59 @@ use crate::{Error, ErrorKind, ResultExt};
pub const SYSTEMD_UNIT: &'static str = "embassyd";
#[command(subcommands(zram))]
pub async fn experimental() -> Result<(), Error> {
Ok(())
}
#[command(display(display_none))]
pub async fn zram(#[context] ctx: RpcContext, #[arg] enable: bool) -> Result<(), Error> {
let mut db = ctx.db.handle();
let zram = crate::db::DatabaseModel::new()
.server_info()
.zram()
.get_mut(&mut db)
.await?;
if enable == *zram {
return Ok(());
}
if enable {
let mem_info = get_mem_info().await?;
Command::new("modprobe")
.arg("zram")
.invoke(ErrorKind::Zram)
.await?;
tokio::fs::write("/sys/block/zram0/comp_algorithm", "lz4")
.await
.with_kind(ErrorKind::Zram)?;
tokio::fs::write(
"/sys/block/zram0/disksize",
format!("{}M", mem_info.total.0 as u64 / 4),
)
.await
.with_kind(ErrorKind::Zram)?;
Command::new("mkswap")
.arg("/dev/zram0")
.invoke(ErrorKind::Zram)
.await?;
Command::new("swapon")
.arg("-p")
.arg("5")
.arg("/dev/zram0")
.invoke(ErrorKind::Zram)
.await?;
} else {
Command::new("swapoff")
.arg("/dev/zram0")
.invoke(ErrorKind::Zram)
.await?;
tokio::fs::write("/sys/block/zram0/reset", "1")
.await
.with_kind(ErrorKind::Zram)?;
}
Ok(())
}
#[command]
pub async fn time() -> Result<String, Error> {
Ok(Utc::now().to_rfc3339())
@@ -699,7 +752,7 @@ async fn get_mem_info() -> Result<MetricsMemory, Error> {
let swap_total = MebiBytes(swap_total_k as f64 / 1024.0);
let swap_free = MebiBytes(swap_free_k as f64 / 1024.0);
let swap_used = MebiBytes((swap_total_k - swap_free_k) as f64 / 1024.0);
let percentage_used = Percentage(used.0 / total.0 * 100.0);
let percentage_used = Percentage((total.0 - available.0) / total.0 * 100.0);
Ok(MetricsMemory {
percentage_used,
total,