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use std::fs;
use std::io;
use std::path::{Path, PathBuf};
use fidget_spinner_store_sqlite::StoreError;
use crate::mcp::protocol::BinaryFingerprint;
pub(super) struct BinaryRuntime {
pub(super) path: PathBuf,
startup_fingerprint: BinaryFingerprint,
pub(super) launch_path_stable: bool,
}
impl BinaryRuntime {
pub(super) fn new(path: PathBuf) -> Result<Self, StoreError> {
let startup_fingerprint = fingerprint_binary(&path)?;
Ok(Self {
launch_path_stable: !path
.components()
.any(|component| component.as_os_str().to_string_lossy() == "target"),
path,
startup_fingerprint,
})
}
pub(super) fn rollout_pending(&self) -> Result<bool, StoreError> {
Ok(fingerprint_binary(&self.path)? != self.startup_fingerprint)
}
}
fn fingerprint_binary(path: &Path) -> Result<BinaryFingerprint, StoreError> {
let metadata = fs::metadata(path)?;
let modified_unix_nanos = metadata
.modified()?
.duration_since(std::time::UNIX_EPOCH)
.map_err(|error| io::Error::other(format!("invalid binary mtime: {error}")))?
.as_nanos();
Ok(BinaryFingerprint {
length_bytes: metadata.len(),
modified_unix_nanos,
})
}
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