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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
[[package]]
name = "windows_x86_64_msvc"
version = "0.48.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"

11
Cargo.toml Normal file
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@@ -0,0 +1,11 @@
[package]
name = "quickly-shutdown-and-start-up-intensive-docker-containers"
version = "0.1.0"
edition = "2021"
[dependencies]
async-channel = "2.3.1"
clap = { version = "4.5.8", features = ["derive", "env"] }
shellexpand = "3.1.0"
thiserror = "1.0.61"
tokio = { version = "1.38.0", features = ["macros", "process", "rt-multi-thread", "sync"] }

104
src/main.rs Normal file
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use std::{
error::Error,
path::{Path, PathBuf},
process::Output,
str::FromStr,
};
use clap::Parser;
use tokio::task::JoinError;
/// Top level command documentation TODO
#[derive(Parser, Debug)]
enum Command {
/// Start up the network-intensive programs on the server
Start,
/// Shut down the network-intensive programs on the server
Stop,
}
const INTENSIVE_AND_IRRELEVANT_PROGRAMS_DIRECTORIES: [&str; 7] = [
"~/docker/stacks/alternative-frontends",
"~/docker/stacks/downloaders",
"~/docker/stacks/invidious",
"~/docker/stacks/libremdb",
"~/docker/stacks/mastodon",
"~/docker/stacks/matrix",
"~/docker/stacks/wikiless",
];
#[derive(Debug, thiserror::Error)]
enum MyError {
#[error("joining process task failed: {0:?}")]
JoinError(#[from] JoinError),
#[error("error with a docker compose process: {0:?}")]
ProcessError(#[from] std::io::Error),
#[error("docker compose process exited unsuccessfully: {0:?}")]
FailedProcess(Output),
}
async fn start(paths: &[impl AsRef<Path>]) -> Result<(), MyError> {
let handles_and_paths = paths
.into_iter()
.map(|path| {
let mut command = tokio::process::Command::new("docker");
command.arg("compose").arg("start").current_dir(path);
(path, command)
})
.map(|(path, mut command)| (path, tokio::spawn(command.output())));
for (path, handle) in handles_and_paths {
let output = handle.await??;
if !output.status.success() {
return Err(MyError::FailedProcess(output));
}
let path = path.as_ref();
println!("{path:?}: {output:#?}");
}
Ok(())
}
async fn stop(paths: &[impl AsRef<Path>]) -> Result<(), MyError> {
let handles_and_paths = paths
.into_iter()
.map(|path| {
let mut command = tokio::process::Command::new("docker");
command.arg("compose").arg("stop").current_dir(path);
(path, command)
})
.map(|(path, mut command)| (path, tokio::spawn(command.output())));
for (path, handle) in handles_and_paths {
let output = handle.await??;
if !output.status.success() {
return Err(MyError::FailedProcess(output));
}
let path = path.as_ref();
println!("{path:?}: {output:#?}");
}
Ok(())
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let command = Command::parse();
let paths = INTENSIVE_AND_IRRELEVANT_PROGRAMS_DIRECTORIES
.map(shellexpand::full)
.map(|thing| thing.map(|s| PathBuf::from_str(s.as_ref()).unwrap()))
.into_iter()
.collect::<Result<Vec<PathBuf>, _>>()?;
match command {
Command::Start => start(&paths).await?,
Command::Stop => stop(&paths).await?,
}
Ok(())
}