experiment: ignore SIGCHLD

.gitignore

@@ -1 +1,2 @@
 /target
+/coba.txt

Cargo.lock

@@ -107,6 +107,17 @@ version = "0.3.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e36d3378ee38c2a36ad710c5d30c2911d752cb941c00c72dbabfb786a7970817"
 
+[[package]]
+name = "getrandom"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe9006bed769170c11f845cf00c7c1e9092aeb3f268e007c3e760ac68008070f"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "gimli"
 version = "0.28.0"
@@ -119,6 +130,12 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
 
+[[package]]
+name = "itoa"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -141,6 +158,12 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "log"
+version = "0.4.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
+
 [[package]]
 name = "memchr"
 version = "2.6.4"
@@ -241,6 +264,12 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.69"
@@ -259,6 +288,36 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
@@ -338,6 +397,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "simplelog"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acee08041c5de3d5048c8b3f6f13fafb3026b24ba43c6a695a0c76179b844369"
+dependencies = [
+ "log",
+ "termcolor",
+ "time",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.11.2"
@@ -365,6 +435,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.50"
@@ -392,11 +471,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4a34ab300f2dee6e562c10a046fc05e358b29f9bf92277f30c3c8d82275f6f5"
 dependencies = [
  "deranged",
+ "itoa",
  "libc",
  "num_threads",
  "powerfmt",
  "serde",
  "time-core",
+ "time-macros",
 ]
 
 [[package]]
@@ -405,6 +486,15 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
 
+[[package]]
+name = "time-macros"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ad70d68dba9e1f8aceda7aa6711965dfec1cac869f311a51bd08b3a2ccbce20"
+dependencies = [
+ "time-core",
+]
+
 [[package]]
 name = "tokio"
 version = "1.34.0"
@@ -460,6 +550,37 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f29e6f9198ba0d26b4c9f07dbe6f9ed633e1f3d5b8b414090084349e46a52596"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
@@ -532,8 +653,11 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "lazy_static",
+ "log",
  "nix",
+ "rand",
  "regex",
+ "simplelog",
  "thiserror",
  "time",
  "tokio",

Cargo.toml

@@ -5,11 +5,27 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[[bin]]
+name = "wmtest-helper-dummy"
+path = "src/bin/test-helper/dummy.rs"
+
+[[bin]]
+name = "wmtest-helper-spawner"
+path = "src/bin/test-helper/spawner.rs"
+
+[[bin]]
+name = "wmtest-helper-log"
+path = "src/bin/test-helper/log.rs"
+
+
 [dependencies]
 anyhow = "1.0.75"
 lazy_static = "1.4.0"
-nix = {version = "0.27.1", features = ["process", "signal", "fs"]}
+log = { version = "0.4.20", features = ["std"]}
+nix = { version = "0.27.1", features = ["process", "signal", "fs"]}
+rand = "0.8.5"
 regex = "1.10.2"
+simplelog = "0.12.1"
 thiserror = "1.0.50"
 time = { version = "0.3.30", features = ["local-offset"]}
 tokio = { version = "1.34.0", features = ["full"] }

docker/alpine/Dockerfile

@@ -0,0 +1,25 @@
+FROM rust:alpine as builder
+
+ADD . /root/wingmate
+
+WORKDIR /root/wingmate
+
+RUN apk add musl-dev && cargo clean && \
+    cargo build --release
+
+FROM alpine
+
+COPY --from=builder /root/wingmate/target/release/wingmate-rs /usr/local/bin/wingmate
+COPY --from=builder /root/wingmate/target/release/wmtest-helper-dummy /usr/local/bin/wmtest-helper-dummy
+COPY --from=builder /root/wingmate/target/release/wmtest-helper-spawner /usr/local/bin/wmtest-helper-spawner
+COPY --from=builder /root/wingmate/target/release/wmtest-helper-log /usr/local/bin/wmtest-helper-log
+
+ADD docker/alpine/etc/ /etc/
+ADD docker/alpine/entry.sh /usr/local/bin/entry.sh
+
+RUN chmod -R ugo+x /etc/wingmate && chmod +x /usr/local/bin/entry.sh && apk add tzdata && \
+    ln -sv /usr/share/zoneinfo/Australia/Sydney /etc/localtime
+
+ENTRYPOINT [ "/usr/local/bin/entry.sh" ]
+
+CMD [ "/usr/local/bin/wingmate" ]

docker/alpine/entry.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+if [ $# -gt 0 ];then
+    exec "$@"
+else
+    exec /usr/local/bin/wingmate
+fi

docker/alpine/etc/wingmate/crontab

@@ -0,0 +1,3 @@
+17 * * * * /etc/wingmate/crontab.d/cron1.sh
+*/5 * * * * /etc/wingmate/crontab.d/cron2.sh
+21,41 3,6,14,17,20,22 * * * /etc/wingmate/crontab.d/cron3.sh

docker/alpine/etc/wingmate/crontab.d/cron1.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec wmtest-helper-log /var/log/cron1.log "this cron runs every hour on minute 17"

docker/alpine/etc/wingmate/crontab.d/cron2.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec wmtest-helper-log /var/log/cron2.log "this cron runs every hour on minute 5,10,15,20,25,30,35,40,45,50,55"

docker/alpine/etc/wingmate/crontab.d/cron3.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec wmtest-helper-log /var/log/cron3.log "this cron runs based on this specification: 21,41 3,6,14,17,20,22 * * *"

docker/alpine/etc/wingmate/services/one

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+export LOG_PATH=/var/log/one.log
+exec /usr/local/bin/wmtest-helper-spawner 10

docker/alpine/etc/wingmate/services/three.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+export LOG_PATH=/var/log/three.log
+exec /usr/local/bin/wmtest-helper-spawner 13

docker/alpine/etc/wingmate/services/two.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+export LOG_PATH=/var/log/two.log
+exec /usr/local/bin/wmtest-helper-spawner 4

docker/dev/Dockerfile

@@ -0,0 +1,9 @@
+FROM ubuntu:22.04
+
+ADD target/debug/init /usr/local/bin/init
+ADD docker/etc/ /etc/
+
+RUN chmod ugo+x /etc/wingmate/services/one && chmod ugo+x /etc/wingmate/services/two.sh && \
+    chmod ugo-x /etc/wingmate/services/three.sh
+
+CMD [ "/usr/local/bin/init" ]

docker/dev/etc/wingmate/crontab

@@ -0,0 +1,3 @@
+17 * * * * sleep 1
+*/12 * * * * sleep 1
+12,17,27 * * * * sleep 1

docker/dev/etc/wingmate/services/one

@@ -0,0 +1 @@
+you cannot run this file

docker/dev/etc/wingmate/services/three.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+exec sleep 1

docker/dev/etc/wingmate/services/two.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+exec sleep 1

src/bin/test-helper/dummy.rs

@@ -0,0 +1,15 @@
+use std::{env, thread, time};
+
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let myi: u64;
+    let args: Vec<String> = env::args().collect();
+    if args.len() > 1 {
+        myi = args[1].parse().unwrap();
+        thread::sleep(time::Duration::from_secs(myi));
+    } else {
+        return Err(anyhow::anyhow!("invalid arguments").into());
+    }
+
+    Ok(())
+}

src/bin/test-helper/log.rs

@@ -0,0 +1,19 @@
+use std::env;
+use std::fs;
+use std::io;
+use std::io::Write;
+use time::OffsetDateTime;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let args: Vec<String> = env::args().collect(); 
+
+    if args.len() == 3 {
+        let file = fs::OpenOptions::new().create(true).append(true).open(&args[1])?;
+        let mut buf = io::BufWriter::new(file);
+        let local_time = OffsetDateTime::now_local()?;
+        buf.write_all(format!("{} {}\n", local_time, &args[2]).as_bytes())?;
+    } else {
+        return Err(anyhow::anyhow!("invalid argument").into());
+    }
+    Ok(())
+}

src/bin/test-helper/spawner.rs

@@ -0,0 +1,46 @@
+#[macro_use] extern crate log;
+extern crate simplelog;
+
+use simplelog::*;
+
+use std::error::Error;
+use std::fs::OpenOptions;
+use std::process::Command;
+use std::env;
+use rand::Rng;
+use nix::sys::signal;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let args: Vec<String> = env::args().collect();
+
+    unsafe {
+        signal::signal(signal::Signal::SIGCHLD, signal::SigHandler::SigIgn)
+    }.unwrap();
+
+    let mut rng = rand::thread_rng();
+
+    let log_path = env::var("LOG_PATH")?;
+    let file = OpenOptions::new().append(true).create(true).open(log_path)?;
+    WriteLogger::init(LevelFilter::Debug, Config::default(), file)?;
+
+    if args.len() > 1 {
+        let x: u64 = args[1].parse()?;
+        loop {
+            for _i in 0..x {
+                let sleep_time = rng.gen_range(10..20);
+                info!("starting wmtest-helper-dummy {}", &sleep_time);
+                let child = Command::new("/usr/local/bin/wmtest-helper-dummy").arg(format!("{}", sleep_time)).spawn();
+                if let Err(e) = child {
+                    error!("error spawning child: {e}");
+                }
+            }
+
+            let pause_time = rng.gen_range(10..20);
+            info!("going to sleep for {}", &pause_time);
+            std::thread::sleep(std::time::Duration::from_secs(pause_time));
+            info!("waking up")
+        }
+    } else {
+        return Err(anyhow::anyhow!("invalid arguments").into());
+    }
+}

src/init/error.rs

@@ -75,14 +75,11 @@ pub enum CronConfigError {
     #[error("setting day of week and day of month at the same time will lead to unexpected behavior")]
     ClashingConfig,
 
-    #[error("when setting time for higher order, the smallest (minute) muste be set")]
-    MissingMinute,
-
-    #[error("something went wrong")]
-    Other {
-        #[source]
-        source: anyhow::Error,
-    }
+    // #[error("something went wrong")]
+    // Other {
+    //     #[source]
+    //     source: anyhow::Error,
+    // }
 }
 
 #[derive(Error,Debug)]

src/main.rs

@@ -1,6 +1,6 @@
+mod init;
 
 use std::error;
-use wingmate_rs::init;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn error::Error>> {