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32 lines
874 B
Rust
32 lines
874 B
Rust
//
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// Local control plane.
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//
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// Can start, cofigure and stop postgres instances running as a local processes.
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//
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// Intended to be used in integration tests and in CLI tools for
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// local installations.
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//
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use anyhow::{anyhow, bail, Context, Result};
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use std::fs;
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use std::path::Path;
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pub mod compute;
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pub mod local_env;
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pub mod storage;
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/// Read a PID file
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///
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/// We expect a file that contains a single integer.
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/// We return an i32 for compatibility with libc and nix.
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pub fn read_pidfile(pidfile: &Path) -> Result<i32> {
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let pid_str = fs::read_to_string(pidfile)
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.with_context(|| format!("failed to read pidfile {:?}", pidfile))?;
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let pid: i32 = pid_str
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.parse()
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.map_err(|_| anyhow!("failed to parse pidfile {:?}", pidfile))?;
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if pid < 1 {
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bail!("pidfile {:?} contained bad value '{}'", pidfile, pid);
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}
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Ok(pid)
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}
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