vinzenz/hyperhive
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download an agent's cached closure in prebuild, building locally when that fails

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This commit is contained in:
atlas 2026-10-28 02:02:29 +01:00
commit c16cf1756f
1 changed files with 1032 additions and 81 deletions
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44
hive-c0re/src/attic/probe.rs
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@ -3,7 +3,8 @@
//!
//! Every [`PASS_INTERVAL`] each agent's record in `agent-closures` is looked up
//! and its narinfo fetched with the pull token and checked against the cache's
//! public key. Nothing is downloaded and nothing is deployed from it.
//! public key. Nothing is downloaded here; a rebuild downloads through
//! [`super::closure`].
//!
//! The verdict is the first of these that fails, in this order:
//! no credentials (`no-credentials`), no record (`no-record`), a record built
@ -82,20 +83,12 @@ impl Cache for Http {
}
}
/// Whether the closure `record` names can be pulled with `facts`. `head` is the
/// `internal/meta` commit a deploy would build from.
pub(crate) async fn judge(
facts: Option<&Facts>,
record: Option<&AgentClosure>,
/// `record` when it is the latest build of the `internal/meta` commit `head`
/// and the builder pushed it to the cache.
pub(crate) fn current_record<'a>(
record: Option<&'a AgentClosure>,
head: Option<&str>,
cache: &impl Cache,
) -> Result<(), Unpullable> {
let facts = facts.ok_or_else(|| {
no(
Reason::NoCredentials,
"the swarm has given this hive no cache facts",
)
})?;
) -> Result<&'a AgentClosure, Unpullable> {
let record =
record.ok_or_else(|| no(Reason::NoRecord, "no build is recorded for the agent"))?;
if head != Some(record.meta_rev.as_str()) {
@ -114,6 +107,24 @@ pub(crate) async fn judge(
"the builder did not push the closure",
));
}
Ok(record)
}
/// Whether the closure `record` names can be pulled with `facts`. `head` is the
/// `internal/meta` commit a deploy would build from.
pub(crate) async fn judge(
facts: Option<&Facts>,
record: Option<&AgentClosure>,
head: Option<&str>,
cache: &impl Cache,
) -> Result<(), Unpullable> {
let facts = facts.ok_or_else(|| {
no(
Reason::NoCredentials,
"the swarm has given this hive no cache facts",
)
})?;
let record = current_record(record, head)?;
let text = match cache.narinfo(facts, &record.store_path).await {
Ok(Some(text)) => text,
Ok(None) => return Err(no(Reason::NotCached, "the cache does not hold the narinfo")),
@ -195,7 +206,10 @@ async fn pass(client: &async_nats::Client) -> Result<()> {
Ok(())
}
async fn read_record(client: &async_nats::Client, agent: &str) -> Result<Option<AgentClosure>> {
pub(crate) async fn read_record(
client: &async_nats::Client,
agent: &str,
) -> Result<Option<AgentClosure>> {
match agent_closures::read(client, agent)
.await
.map_err(|e| anyhow::anyhow!(e))