Struct PendingManifestHook 

pub(crate) struct PendingManifestHook {
    region_id: RegionId,
    action_list: Option<RegionMetaActionList>,
    version: ManifestVersion,
    hook: Option<RegionHookRef>,
}

A deferred RegionHook::on_manifest_updated notification produced by a logical manifest write via ManifestContext::update_locked.

Must be fired after the manifest write lock is released (the hook may read the manifest). #[must_use] so a forgotten receipt warns.

Fields

region_id: RegionId

action_list: Option<RegionMetaActionList>

None when no hook is registered (fire becomes a no-op).

version: ManifestVersion

hook: Option<RegionHookRef>

Implementations

impl PendingManifestHook

pub(crate) fn new( region_id: RegionId, action_list: Option<RegionMetaActionList>, version: ManifestVersion, hook: Option<RegionHookRef>, ) -> Self

pub(crate) fn version(&self) -> ManifestVersion

The manifest version produced by the write.

pub(crate) async fn fire(self)

Fires the hook if one is registered. Safe to call unconditionally: it is a no-op when no hook is registered.

pub(crate) fn merge(self, other: PendingManifestHook) -> PendingManifestHook

Merges two pending notifications into one so consumers observe a single on_manifest_updated call covering all actions. The combined action list keeps self’s actions followed by other’s, and the later manifest version wins. Used when a sequence of writes (e.g. staging-exit followed by metadata backfill) should notify the hook exactly once.