logger: add cgroup option

src/bin/dkl.rs

@@ -1,5 +1,5 @@
 use clap::{CommandFactory, Parser, Subcommand};
-use eyre::{format_err, Result};
+use eyre::{Result, format_err};
 use human_units::Duration;
 use log::{debug, error};
 use std::net::SocketAddr;
@@ -39,6 +39,9 @@ enum Command {
         /// prefix log lines with time & stream
         #[arg(long)]
         with_prefix: bool,
+        /// exec command in this cgroup
+        #[arg(long)]
+        cgroup: Option<String>,
         command: String,
         args: Vec<String>,
     },
@@ -125,6 +128,7 @@ async fn main() -> Result<()> {
             ref log_path,
             ref log_name,
             with_prefix,
+            cgroup,
             command,
             args,
         } => {
@@ -136,7 +140,7 @@ async fn main() -> Result<()> {
                 log_name,
                 with_prefix,
             }
-            .run(command, &args)
+            .run(cgroup, command, &args)
             .await
         }
         C::Log {