fabaccess-bffh/bffhd/actors/process.rs

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Rust
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use std::collections::HashMap;
use std::process::{Command, Stdio};
use futures_util::future::BoxFuture;
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use rkyv::Archived;
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use crate::actors::Actor;
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use crate::db::ArchivedValue;
use crate::resources::modules::fabaccess::ArchivedStatus;
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use crate::resources::state::State;
pub struct Process {
name: String,
cmd: String,
args: Vec<String>,
}
impl Process {
pub fn new(name: String, params: &HashMap<String, String>) -> Option<Self> {
let cmd = params.get("cmd").map(|s| s.to_string())?;
let args = params.get("args").map(|argv|
argv.split_whitespace()
.map(|s| s.to_string())
.collect())
.unwrap_or_else(Vec::new);
Some(Self { name, cmd, args })
}
pub fn into_boxed_actuator(self) -> Box<dyn Actor + Sync + Send> {
Box::new(self)
}
}
impl Actor for Process {
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fn apply(&mut self, state: ArchivedValue<State>) -> BoxFuture<'static, ()> {
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tracing::debug!(name=%self.name, cmd=%self.cmd, ?state,
"Process actor updating state");
let mut command = Command::new(&self.cmd);
command
.stdin(Stdio::null())
.args(self.args.iter())
.arg(&self.name);
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match &state.as_ref().inner.state {
ArchivedStatus::Free => {
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command.arg("free");
}
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ArchivedStatus::InUse(by) => {
command.arg("inuse").arg(by.id.as_str());
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}
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ArchivedStatus::ToCheck(by) => {
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command.arg("tocheck")
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.arg(by.id.as_str());
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}
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ArchivedStatus::Blocked(by) => {
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command.arg("blocked")
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.arg(by.id.as_str());
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}
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ArchivedStatus::Disabled => { command.arg("disabled"); },
ArchivedStatus::Reserved(by) => {
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command.arg("reserved")
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.arg(by.id.as_str());
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}
}
let name = self.name.clone();
Box::pin(async move { match command.output() {
Ok(retv) if retv.status.success() => {
tracing::trace!("Actor was successful");
let outstr = String::from_utf8_lossy(&retv.stdout);
for line in outstr.lines() {
tracing::debug!(%name, %line, "actor stdout");
}
}
Ok(retv) => {
tracing::warn!(%name, ?state, code=?retv.status,
"Actor returned nonzero exitcode"
);
if !retv.stderr.is_empty() {
let errstr = String::from_utf8_lossy(&retv.stderr);
for line in errstr.lines() {
tracing::warn!(%name, %line, "actor stderr");
}
}
}
Err(error) => tracing::warn!(%name, ?error, "process actor failed to run cmd"),
}})
}
}