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Merge pull request #2 from prplV/feature/main-running-handler 

merging feature/main-running-handler with master
pull/9/head
Vladislav Drozdov 2024-07-08 06:36:34 -04:00 committed by GitHub
parent 244508509c f9cb2c7cf8
commit 379eb97769
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GPG Key ID: B5690EEEBB952194
2 changed files with 106 additions and 70 deletions
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8
settings.json
View File

@ -41,7 +41,7 @@
"filename" : "control-file",
"src" : "/home/vladislav/web/",
"triggers" : {
"onDelete" : "stop",
"onDelete" : "hold",
"onChange" : "hold"
}
}],
@ -57,9 +57,9 @@
"hostname" : "localhost",
"port" : 8080,
"triggers" : {
"wait" : 20,
"delay" : 5,
"onLost" : "stop"
"wait" : 10,
"delay" : 2,
"onLost" : "hold"
}
}]
}

168
src/main.rs
View File

@ -1,6 +1,7 @@
use serde::{Deserialize, Serialize};
use serde_json;
use tokio::io::Join;
use tokio::join;
use std::env::join_paths;
use std::fmt::Debug;
use std::fs;
@ -66,7 +67,7 @@ struct FIleTriggers {
on_change : String,
}
#[tokio::main]
#[tokio::main(flavor = "multi_thread")]
async fn main() {
let processes = load_processes("settings.json");
// let mut error_counter = 0;
@ -78,7 +79,7 @@ async fn main() {
let mut handler: Vec<tokio::task::JoinHandle<()>> = vec![];
for proc in processes.processes.iter() {
println!("\nProcess '{}' on stage:\n{}\nDepends on {} file(s), {} service(s)\n",
println!("Process '{}' on stage:\n{}\nDepends on {} file(s), {} service(s)\n",
proc.name,
proc.path,
proc.dependencies.files.len(),
@ -108,25 +109,30 @@ async fn run_daemons(
)
{
loop {
let run_hand = running_handler(&proc.name, &proc.path, tx.clone());
let file_hand = file_handler(&proc.name,&proc.dependencies.files, tx.clone());
let serv_hand = service_handler(&proc.name, &proc.dependencies.services, tx.clone());
let run_hand = running_handler(&proc, tx.clone());
// let file_hand = file_handler(&proc.name,&proc.dependencies.files, tx.clone());
// let serv_hand = service_handler(&proc.name, &proc.dependencies.services, tx.clone());
tokio::select! {
_ = run_hand => {},
_ = file_hand => {},
_ = serv_hand => {},
// _ = file_hand => {},
// _ = serv_hand => {},
_val = rx.recv() => {
match _val.unwrap() {
// 1 - File-dependency handling error -> terminating (after waiting)
1 => {
println!("Dependency handling error: Terminating {} process ..." , &proc.name);
terminate_process(&proc.name).await;
break;
if is_active(&proc.name) {
println!("Dependency handling error: Terminating {} process ..." , &proc.name);
terminate_process(&proc.name).await;
}
// break;
},
// 2 - File-dependency handling error -> holding (after waiting)
2 => {
println!("Error due to starting {} process", &proc.name);
if !is_frozen(&proc.name) {
println!("Dependency handling error: Freezing {} process ..." , &proc.name);
freeze_process(&proc.name).await;
}
},
// 3 - Running process error
3 => {
@ -138,14 +144,18 @@ async fn run_daemons(
},
// 5 - Timeout of waiting service-dependency -> terminating (after waiting)
5 => {
println!("Timeout of waiting service-dependency: Terminating {} process ..." , &proc.name);
terminate_process(&proc.name).await;
break;
if is_active(&proc.name) {
println!("Timeout of waiting service-dependency: Terminating {} process ..." , &proc.name);
terminate_process(&proc.name).await;
}
// break;
},
// 6 - Timeout of waiting service-dependency -> holding (after waiting)
6 => {
println!("Timeout of waiting service-dependency: Freezing {} process ..." , &proc.name);
freeze_process(&proc.name).await;
if !is_frozen(&proc.name) {
println!("Timeout of waiting service-dependency: Freezing {} process ..." , &proc.name);
freeze_process(&proc.name).await;
}
},
// // 7 - File-dependency change -> terminating (after check)
// 7 => {},
@ -156,13 +166,17 @@ async fn run_daemons(
// 10 - Process unfreaze call via file handler
10 => {
println!("Unfreezing process {} call via file handler...", &proc.name);
unfreeze_process(&proc.name).await;
if is_frozen(&proc.name) {
println!("Unfreezing process {} call...", &proc.name);
unfreeze_process(&proc.name).await;
}
},
// 11 - Process unfreaze call via service handler
11 => {
println!("Unfreezing process {} call via service handler...", &proc.name);
unfreeze_process(&proc.name).await;
if is_frozen(&proc.name) {
println!("Unfreezing process {} call...", &proc.name);
unfreeze_process(&proc.name).await;
}
},
// 101 - Impermissible trigger values in JSON
101 => {
@ -246,58 +260,69 @@ async fn start_process(name: &str, path: &str) -> Result<(), CustomError> {
}
}
// check process status daemon
async fn running_handler(name: &str, path: &str, tx: mpsc::Sender<u8>){
println!("running daemon on {}", name);
let _ = Command::new("pidof")
.arg(name)
.output()
.expect("Failed to execute command 'pidof'");
async fn running_handler(prc: &TrackingProcess, tx: mpsc::Sender<u8>){
// println!("running daemon on {}", prc.name);
// loop {
// let _ = Command::new("pidof")
// .arg(&prc.name)
// .output()
// .expect("Failed to execute command 'pidof'");
// services and files check (once)
let files_check = file_handler(&prc.name, &prc.dependencies.files, tx.clone());
let services_check = service_handler(&prc.name, &prc.dependencies.services, tx.clone());
if !is_active(name) && !is_frozen(name){
if start_process(name, path).await.is_err() {
let res = join!(files_check, services_check);
// if inactive -> spawn checks -> active is true
if !is_active(&prc.name) && res.0.is_ok() && res.1.is_ok(){
if start_process(&prc.name, &prc.path).await.is_err() {
tx.send(3).await.unwrap();
// return;
return;
}
}
// if frozen -> spawn checks -> unfreeze is true
else if is_frozen(&prc.name) && res.0.is_ok() && res.1.is_ok(){
tx.send(10).await.unwrap();
return;
}
tokio::time::sleep(Duration::from_millis(100)).await;
tokio::task::yield_now().await;
// }
}
async fn file_handler(name: &str, files: &Vec<Files>, tx: mpsc::Sender<u8>) {
loop {
println!("file daemon on {}", name);
if is_active(name) && !is_frozen(name){
async fn file_handler(name: &str, files: &Vec<Files>, tx: mpsc::Sender<u8>) -> Result<(), CustomError>{
// println!("file daemon on {}", name);
for file in files {
if check_file(&file.filename, &file.src).is_err() {
if !is_active(name) || is_frozen(name) {
return Err(CustomError::Fatal);
}
match file.triggers.on_delete.as_str() {
"stay" => {
continue;
},
"stop" => {
tx.send(1).await.unwrap();
return;
if is_active(name) {
tx.send(1).await.unwrap();
}
return Err(CustomError::Fatal);
},
"hold" => {
tx.send(2).await.unwrap();
// continue;
// while check_file(&file.filename, &file.src).is_err() {
// println!("zov");
// tokio::time::sleep(Duration::from_millis(100)).await;
// }
// tx.send(10).await.unwrap();
if is_active(name) {
tx.send(2).await.unwrap();
return Err(CustomError::Fatal);
}
},
_ => {
tokio::time::sleep(Duration::from_millis(50)).await;
tx.send(101).await.unwrap();
return;
return Err(CustomError::Fatal);
},
}
}
}
// if is_frozen(name) {
// tx.send(10).await.unwrap();
// }
}
tokio::time::sleep(Duration::from_millis(100)).await;
}
tokio::task::yield_now().await;
Ok(())
}
fn check_file(filename: &str, path: &str) -> Result<(), CustomError> {
let fileconcat = format!("{}{}", path, filename);
@ -310,40 +335,48 @@ fn check_file(filename: &str, path: &str) -> Result<(), CustomError> {
}
// ??
async fn service_handler(name: &str, services: &Vec<Services>, tx: mpsc::Sender<u8>) {
loop {
println!("service daemon on {}", name);
if is_active(name) && !is_frozen(name) {
async fn service_handler(name: &str, services: &Vec<Services>, tx: mpsc::Sender<u8>) -> Result<(), CustomError> {
// println!("service daemon on {}", name);
// let state = is_active(name);
// let condition = is_frozen(name);
for serv in services {
if check_service(&serv.hostname, &serv.port).is_err() {
// println!("Service {}:{} is unreachable for process {}", &serv.hostname, &serv.port, &name);
if check_service(&serv.hostname, &serv.port).await.is_err() {
if !is_active(name) || is_frozen(name) {
return Err(CustomError::Fatal);
}
println!("Service {}:{} is unreachable for process {}", &serv.hostname, &serv.port, &name);
match serv.triggers.on_lost.as_str() {
"stay" => {
},
"stop" => {
if looped_service_connecting(&name, serv).await.is_err() {
if looped_service_connecting(name, serv).await.is_err() {
tx.send(5).await.unwrap();
return;
tokio::time::sleep(Duration::from_millis(100)).await;
return Err(CustomError::Fatal);
}
},
"hold" => {
if looped_service_connecting(&name, serv).await.is_err() {
if is_frozen(name) {
return Err(CustomError::Fatal);
}
if looped_service_connecting(name, serv).await.is_err() {
tx.send(6).await.unwrap();
tokio::time::sleep(Duration::from_millis(100)).await;
return Err(CustomError::Fatal);
}
},
_ => {
tx.send(101).await.unwrap();
return;
return Err(CustomError::Fatal);
},
}
}
}
// if is_frozen(name) {
// tx.send(11).await.unwrap();
// }
}
tokio::time::sleep(Duration::from_millis(100)).await;
}
tokio::task::yield_now().await;
Ok(())
}
async fn looped_service_connecting(
@ -351,12 +384,14 @@ async fn looped_service_connecting(
serv: &Services
) -> Result<(), CustomError>
{
if serv.triggers.wait == 0 {
loop {
tokio::time::sleep(Duration::from_secs(serv.triggers.delay.into())).await;
println!("Attempting to connect from {} process to {}:{}",&name, &serv.hostname, &serv.port );
match check_service(&serv.hostname, &serv.port) {
match check_service(&serv.hostname, &serv.port).await {
Ok(_) => {
println!("SUCCESS!");
break;
},
Err(_) => {
@ -370,8 +405,9 @@ async fn looped_service_connecting(
while start.elapsed().as_secs() < serv.triggers.wait.into() {
tokio::time::sleep(Duration::from_secs(serv.triggers.delay.into())).await;
println!("Attempting to connect from {} process to {}:{}",&name, &serv.hostname, &serv.port );
match check_service(&serv.hostname, &serv.port) {
match check_service(&serv.hostname, &serv.port).await {
Ok(_) => {
println!("SUCCESS!");
return Ok(());
},
Err(_) => {
@ -382,7 +418,7 @@ async fn looped_service_connecting(
return Err(CustomError::Fatal);
}
}
fn check_service(host: &str, port: &u32) -> Result<(), CustomError> {
async fn check_service(host: &str, port: &u32) -> Result<(), CustomError> {
let mut command = Command::new("bash");
command.args(["service-checker.sh", host, &port.to_string()]);