A runner's claim lists the rootfs images it holds (refs andymccall/oxygenhub#73) 8c0a4e3a8a30

ClaimRequest gains images: the BLAKE3 hashes of cas/*.ext4 in the
runner's home, read at each claim so an image imported meanwhile counts.
The hub can then offer a runner only the jobs whose image it has; absent,
as from an older runner, any job may still be offered.

Author: Andy McCall @andymccall <[email protected]>
When: 1 month ago · 2026-10-02 00:41 UTC
Signature: ✔ signed by Andy McCall
Hash: 8c0a4e3a8a30d6039e152abe1049c7973079c71e059b4da2a39b963d007acf71
Depends on: 3007d8f011fa c3db750ed96e e0918b887850 f98a8f7881e0
Depended on by: 1abadd4a2fa6 1daca0b6bb8c
In bookmarks: main newer-pipeline push-uses-login
In tags: v0.2.0 v0.3.0 v0.3.1 v0.4.0 v0.5.0 v0.5.1 v0.5.2 v0.5.3
Edits: 4 atoms, 0 tree operations, 4 files

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modified CHANGELOG.md +2 −0

modified crates/flow-core/src/api.rs +6 −0

modified crates/flow/src/home.rs +16 −0

modified crates/flow/src/runner.rs +2 −0

		…	3 unchanged lines
4	4
5	5		## Unreleased
6	6
	7	+	- A runner says which images it holds (oxygenhub#73). Each claim lists the rootfs images in the runner's `cas/` (read each time, so an image imported while it runs counts), and the hub offers only jobs whose image is among them. plex-1 had failed metalgear's jobs for want of one.
	8	+
7	9		- A job's result is kept until the hub has it (oxygenhub#71). The runner offered a finished job's result three times over seven seconds and then dropped it, so a hub that was briefly down (Earth's reset) left the job running forever. The result is now kept on disk (`pending/` in the Flow home) and offered again, every 5 s doubling to a minute, for up to two hours, through any server error or lost connection; a runner that restarts sends what it kept. A refusal (the hub ended the job already) is final.
8	10
9	11		- The Rust build image vendors mimalloc (#20). Oxygen's new allocator was missing from the image, so oxygen's runs #150 to #153 failed. The image was rebuilt with `images/rust/build.sh`, imported on Earth and pinned in the oxygen, oxygenhub and oxygenflow pipelines. Rebuild it whenever a `Cargo.lock` of those projects changes.
		…	1 unchanged lines

		…	21 unchanged lines
22	22		/// What the runner is, for the hub's Runners page.
23	23		#[serde(default, skip_serializing_if = "Option::is_none")]
24	24		pub info: Option<RunnerInfo>,
	25	+	/// The rootfs images the runner holds (BLAKE3 hex, as pipelines pin
	26	+	/// them): the hub offers only jobs whose image is among them
	27	+	/// (oxygenhub#73). Absent: the runner does not say, and any job may be
	28	+	/// offered.
	29	+	#[serde(default, skip_serializing_if = "Option::is_none")]
	30	+	pub images: Option<Vec<String>>,
25	31		}
26	32
27	33		/// A runner's description: shown on the hub's Runners page, and what
		…	158 unchanged lines

		…	113 unchanged lines
114	114		self.root.join("cas").join(format!("{hash}.ext4"))
115	115		}
116	116
	117	+	/// The rootfs images this home holds: the hashes of `cas/*.ext4`.
	118	+	pub fn images(&self) -> Vec<String> {
	119	+	let Ok(dir) = std::fs::read_dir(self.root.join("cas")) else {
	120	+	return Vec::new();
	121	+	};
	122	+	let mut out: Vec<String> = dir
	123	+	.filter_map(\|e\| {
	124	+	let name = e.ok()?.file_name().into_string().ok()?;
	125	+	let hash = name.strip_suffix(".ext4")?;
	126	+	(hash.len() == 64 && hash.chars().all(\|c\| c.is_ascii_hexdigit())).then(\|\| hash.to_string())
	127	+	})
	128	+	.collect();
	129	+	out.sort();
	130	+	out
	131	+	}
	132	+
117	133		/// A pinned file, checked against its BLAKE3 before use (again only
118	134		/// when its size or modification time changed since).
119	135		pub fn verified(&self, path: &Path, blake3_hex: &str) -> Result<PathBuf> {
		…	77 unchanged lines

		…	286 unchanged lines
287	287		version: env!("OXY_VERSION_LONG").into(),
288	288		..RunnerInfo::here(cfg.labels.clone(), budget.max_jobs as u32, cfg.memory_mib, cfg.cpus)
289	289		}),
	290	+	// Read each time: an image imported while the runner runs counts.
	291	+	images: Some(home.images()),
290	292		};
291	293		match hub.claim(&req) {
292	294		Ok(Some(claim)) => {
		…	410 unchanged lines

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A runner's claim lists the rootfs images it holds (refs andymccall/oxygenhub#73) 8c0a4e3a8a30

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