funman300
468b006008
A whole-repo check read DIRTY permanently, because unrelated submodules carry pre-existing modifications. A warning that is always on is a warning nobody reads, which defeats the point: the flag exists so a mutated build announces itself before it can be mistaken for parity evidence. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
62 lines
2.3 KiB
Rust
62 lines
2.3 KiB
Rust
//! Stamp build identity into the binary.
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//!
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//! A live FIFA trace has to be attributable to an exact binary. During the
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//! mutation runs for the previous step, four sidecars were left listening —
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//! two of them serving deliberately broken builds — and nothing in their output
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//! said so. A later A/B against one of those would have read as a genuine
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//! parity failure.
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//!
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//! So the host prints its commit, working-tree cleanliness and profile at
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//! startup, and `dirty` is the important one: a mutation-tested build is a
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//! dirty build, and now it announces itself.
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use std::process::Command;
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fn git(args: &[&str]) -> Option<String> {
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let out = Command::new("git").args(args).output().ok()?;
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if !out.status.success() {
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return None;
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}
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Some(String::from_utf8_lossy(&out.stdout).trim().to_string())
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}
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fn main() {
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let commit = git(&["rev-parse", "--short=7", "HEAD"]).unwrap_or_else(|| "unknown".into());
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// Scoped to the crates this binary is actually built from.
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//
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// A whole-repo check reads DIRTY permanently here, because unrelated
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// submodules carry pre-existing modifications. A warning that is always on
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// is a warning nobody reads — which would defeat the point, since the whole
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// job of this flag is to make a mutated build announce itself.
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//
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// Untracked files are excluded: scratch output is not a build difference,
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// but an edited source file certainly is.
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let dirty = match git(&[
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"status",
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"--porcelain",
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"--untracked-files=no",
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"--",
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"openfut-blaze-host",
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"openfut-adapter-fifa17",
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"openfut-protocol-blaze",
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]) {
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Some(s) if !s.is_empty() => "DIRTY",
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Some(_) => "clean",
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None => "unknown",
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};
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println!("cargo:rustc-env=OPENFUT_BUILD_COMMIT={commit}");
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println!("cargo:rustc-env=OPENFUT_BUILD_DIRTY={dirty}");
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// Re-stamp when HEAD moves. Working-tree edits are not tracked by cargo's
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// dependency graph, so `dirty` can go stale until something forces a
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// rebuild — the startup banner says which commit it was stamped from, and
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// the sidecar script re-checks the working tree independently at launch.
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for p in ["../.git/HEAD", "../.git/index"] {
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if std::path::Path::new(p).exists() {
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println!("cargo:rerun-if-changed={p}");
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}
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}
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}
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