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docs: document global singleton migration plan (#730) (#4015)

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docs: document global singleton migration plan

Add comments documenting the Tier A/B classification and migration
plan for global singletons in ecstore runtime.

Refs #730
This commit is contained in:
Zhengchao An
2026-06-28 21:25:42 +08:00
committed by GitHub
parent 163e8089db
commit ed0f191e1a
1 changed files with 7 additions and 0 deletions
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crates/ecstore/src/runtime/global.rs
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@@ -38,6 +38,13 @@ pub const DISK_MIN_INODES: u64 = 1000;
pub const DISK_FILL_FRACTION: f64 = 0.99;
pub const DISK_RESERVE_FRACTION: f64 = 0.15;
// Global singletons for backward compatibility with MinIO port.
// These should be migrated to AppContext over time.
// See issue #730 for migration plan.
//
// Tier A (needs migration): GLOBAL_OBJECT_API, GLOBAL_IsErasure*, GLOBAL_LOCAL_DISK_*,
// GLOBAL_RootDiskThreshold, GLOBAL_LifecycleSys, GLOBAL_EventNotifier, etc.
// Tier B (keep as static): GLOBAL_RUSTFS_PORT, GLOBAL_REGION, env var caches, etc.
lazy_static! {
static ref GLOBAL_RUSTFS_PORT: OnceLock<u16> = OnceLock::new();
static ref globalDeploymentIDPtr: OnceLock<Uuid> = OnceLock::new();