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ME Draining on Dual-Stack 

Co-Authored-By: brekotis <93345790+brekotis@users.noreply.github.com>
This commit is contained in:
Alexey 2026-03-20 16:07:12 +03:00
parent 5c0eb6dbe8
commit 269ba537ad
No known key found for this signature in database
6 changed files with 664 additions and 37 deletions
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41
src/api/runtime_min.rs
View File

@ -154,6 +154,25 @@ pub(super) struct RuntimeMeQualityRouteDropData {
pub(super) queue_full_high_total: u64,
}
#[derive(Serialize)]
pub(super) struct RuntimeMeQualityFamilyStateData {
pub(super) family: &'static str,
pub(super) state: &'static str,
pub(super) state_since_epoch_secs: u64,
#[serde(skip_serializing_if = "Option::is_none")]
pub(super) suppressed_until_epoch_secs: Option<u64>,
pub(super) fail_streak: u32,
pub(super) recover_success_streak: u32,
}
#[derive(Serialize)]
pub(super) struct RuntimeMeQualityDrainGateData {
pub(super) route_quorum_ok: bool,
pub(super) redundancy_ok: bool,
pub(super) block_reason: &'static str,
pub(super) updated_at_epoch_secs: u64,
}
#[derive(Serialize)]
pub(super) struct RuntimeMeQualityDcRttData {
pub(super) dc: i16,
@ -169,6 +188,8 @@ pub(super) struct RuntimeMeQualityPayload {
pub(super) counters: RuntimeMeQualityCountersData,
pub(super) teardown: RuntimeMeQualityTeardownData,
pub(super) route_drops: RuntimeMeQualityRouteDropData,
pub(super) family_states: Vec<RuntimeMeQualityFamilyStateData>,
pub(super) drain_gate: RuntimeMeQualityDrainGateData,
pub(super) dc_rtt: Vec<RuntimeMeQualityDcRttData>,
}
@ -409,6 +430,19 @@ pub(super) async fn build_runtime_me_quality_data(shared: &ApiShared) -> Runtime
};
let status = pool.api_status_snapshot().await;
let family_states = pool
.api_family_state_snapshot()
.into_iter()
.map(|entry| RuntimeMeQualityFamilyStateData {
family: entry.family,
state: entry.state,
state_since_epoch_secs: entry.state_since_epoch_secs,
suppressed_until_epoch_secs: entry.suppressed_until_epoch_secs,
fail_streak: entry.fail_streak,
recover_success_streak: entry.recover_success_streak,
})
.collect();
let drain_gate_snapshot = pool.api_drain_gate_snapshot();
RuntimeMeQualityData {
enabled: true,
reason: None,
@ -430,6 +464,13 @@ pub(super) async fn build_runtime_me_quality_data(shared: &ApiShared) -> Runtime
queue_full_base_total: shared.stats.get_me_route_drop_queue_full_base(),
queue_full_high_total: shared.stats.get_me_route_drop_queue_full_high(),
},
family_states,
drain_gate: RuntimeMeQualityDrainGateData {
route_quorum_ok: drain_gate_snapshot.route_quorum_ok,
redundancy_ok: drain_gate_snapshot.redundancy_ok,
block_reason: drain_gate_snapshot.block_reason,
updated_at_epoch_secs: drain_gate_snapshot.updated_at_epoch_secs,
},
dc_rtt: status
.dcs
.into_iter()

311
src/transport/middle_proxy/health.rs
View File

@ -13,7 +13,7 @@ use crate::network::IpFamily;
use crate::stats::MeWriterTeardownReason;
use super::MePool;
use super::pool::MeWriter;
use super::pool::{MeFamilyRuntimeState, MeWriter};
const JITTER_FRAC_NUM: u64 = 2; // jitter up to 50% of backoff
#[allow(dead_code)]
@ -34,6 +34,33 @@ const HEALTH_DRAIN_SOFT_EVICT_BUDGET_MIN: usize = 8;
const HEALTH_DRAIN_SOFT_EVICT_BUDGET_MAX: usize = 256;
const HEALTH_DRAIN_REAP_OPPORTUNISTIC_INTERVAL_SECS: u64 = 1;
const HEALTH_DRAIN_TIMEOUT_ENFORCER_INTERVAL_SECS: u64 = 1;
const FAMILY_SUPPRESS_FAIL_STREAK_THRESHOLD: u32 = 6;
const FAMILY_SUPPRESS_WINDOW_SECS: u64 = 120;
const FAMILY_RECOVER_PROBE_INTERVAL_SECS: u64 = 5;
const FAMILY_RECOVER_SUCCESS_STREAK_REQUIRED: u32 = 3;
#[derive(Debug, Clone)]
struct FamilyCircuitState {
state: MeFamilyRuntimeState,
state_since_at: Instant,
suppressed_until: Option<Instant>,
next_probe_at: Instant,
fail_streak: u32,
recover_success_streak: u32,
}
impl FamilyCircuitState {
fn new(now: Instant) -> Self {
Self {
state: MeFamilyRuntimeState::Healthy,
state_since_at: now,
suppressed_until: None,
next_probe_at: now,
fail_streak: 0,
recover_success_streak: 0,
}
}
}
#[derive(Debug, Clone)]
struct DcFloorPlanEntry {
@ -73,6 +100,25 @@ pub async fn me_health_monitor(pool: Arc<MePool>, rng: Arc<SecureRandom>, _min_c
let mut floor_warn_next_allowed: HashMap<(i32, IpFamily), Instant> = HashMap::new();
let mut drain_warn_next_allowed: HashMap<u64, Instant> = HashMap::new();
let mut drain_soft_evict_next_allowed: HashMap<u64, Instant> = HashMap::new();
let mut family_v4_circuit = FamilyCircuitState::new(Instant::now());
let mut family_v6_circuit = FamilyCircuitState::new(Instant::now());
let init_epoch_secs = MePool::now_epoch_secs();
pool.set_family_runtime_state(
IpFamily::V4,
family_v4_circuit.state,
init_epoch_secs,
0,
family_v4_circuit.fail_streak,
family_v4_circuit.recover_success_streak,
);
pool.set_family_runtime_state(
IpFamily::V6,
family_v6_circuit.state,
init_epoch_secs,
0,
family_v6_circuit.fail_streak,
family_v6_circuit.recover_success_streak,
);
let mut degraded_interval = true;
loop {
let interval = if degraded_interval {
@ -88,7 +134,9 @@ pub async fn me_health_monitor(pool: Arc<MePool>, rng: Arc<SecureRandom>, _min_c
&mut drain_soft_evict_next_allowed,
)
.await;
let v4_degraded = check_family(
let now = Instant::now();
let now_epoch_secs = MePool::now_epoch_secs();
let v4_degraded_raw = check_family(
IpFamily::V4,
&pool,
&rng,
@ -107,25 +155,53 @@ pub async fn me_health_monitor(pool: Arc<MePool>, rng: Arc<SecureRandom>, _min_c
&mut drain_soft_evict_next_allowed,
)
.await;
let v6_degraded = check_family(
IpFamily::V6,
let v4_degraded = apply_family_circuit_result(
&pool,
&rng,
&mut backoff,
&mut next_attempt,
&mut inflight,
&mut outage_backoff,
&mut outage_next_attempt,
&mut single_endpoint_outage,
&mut shadow_rotate_deadline,
&mut idle_refresh_next_attempt,
&mut adaptive_idle_since,
&mut adaptive_recover_until,
&mut floor_warn_next_allowed,
&mut drain_warn_next_allowed,
&mut drain_soft_evict_next_allowed,
)
.await;
IpFamily::V4,
&mut family_v4_circuit,
Some(v4_degraded_raw),
false,
now,
now_epoch_secs,
);
let v6_check_ran = should_run_family_check(&mut family_v6_circuit, now);
let v6_degraded_raw = if v6_check_ran {
check_family(
IpFamily::V6,
&pool,
&rng,
&mut backoff,
&mut next_attempt,
&mut inflight,
&mut outage_backoff,
&mut outage_next_attempt,
&mut single_endpoint_outage,
&mut shadow_rotate_deadline,
&mut idle_refresh_next_attempt,
&mut adaptive_idle_since,
&mut adaptive_recover_until,
&mut floor_warn_next_allowed,
&mut drain_warn_next_allowed,
&mut drain_soft_evict_next_allowed,
)
.await
} else {
false
};
let v6_degraded = apply_family_circuit_result(
&pool,
IpFamily::V6,
&mut family_v6_circuit,
if v6_check_ran {
Some(v6_degraded_raw)
} else {
None
},
true,
now,
now_epoch_secs,
);
degraded_interval = v4_degraded || v6_degraded;
}
}
@ -147,6 +223,148 @@ pub async fn me_drain_timeout_enforcer(pool: Arc<MePool>) {
}
}
fn should_run_family_check(circuit: &mut FamilyCircuitState, now: Instant) -> bool {
match circuit.state {
MeFamilyRuntimeState::Suppressed => {
if now < circuit.next_probe_at {
return false;
}
circuit.next_probe_at =
now + Duration::from_secs(FAMILY_RECOVER_PROBE_INTERVAL_SECS);
true
}
_ => true,
}
}
fn apply_family_circuit_result(
pool: &Arc<MePool>,
family: IpFamily,
circuit: &mut FamilyCircuitState,
degraded: Option<bool>,
allow_suppress: bool,
now: Instant,
now_epoch_secs: u64,
) -> bool {
let Some(degraded) = degraded else {
// Preserve suppression state when probe tick is intentionally skipped.
return false;
};
let previous_state = circuit.state;
match circuit.state {
MeFamilyRuntimeState::Suppressed => {
if degraded {
circuit.fail_streak = circuit.fail_streak.saturating_add(1);
circuit.recover_success_streak = 0;
let until = now + Duration::from_secs(FAMILY_SUPPRESS_WINDOW_SECS);
circuit.suppressed_until = Some(until);
circuit.state_since_at = now;
warn!(
?family,
fail_streak = circuit.fail_streak,
suppress_secs = FAMILY_SUPPRESS_WINDOW_SECS,
"ME family remains suppressed due to ongoing failures"
);
} else {
circuit.fail_streak = 0;
circuit.recover_success_streak = 1;
circuit.state = MeFamilyRuntimeState::Recovering;
}
}
MeFamilyRuntimeState::Recovering => {
if degraded {
circuit.fail_streak = circuit.fail_streak.saturating_add(1);
if allow_suppress {
circuit.state = MeFamilyRuntimeState::Suppressed;
let until = now + Duration::from_secs(FAMILY_SUPPRESS_WINDOW_SECS);
circuit.suppressed_until = Some(until);
circuit.next_probe_at =
now + Duration::from_secs(FAMILY_RECOVER_PROBE_INTERVAL_SECS);
warn!(
?family,
fail_streak = circuit.fail_streak,
suppress_secs = FAMILY_SUPPRESS_WINDOW_SECS,
"ME family temporarily suppressed after repeated degradation"
);
} else {
circuit.state = MeFamilyRuntimeState::Degraded;
}
} else {
circuit.recover_success_streak = circuit.recover_success_streak.saturating_add(1);
if circuit.recover_success_streak >= FAMILY_RECOVER_SUCCESS_STREAK_REQUIRED {
circuit.fail_streak = 0;
circuit.recover_success_streak = 0;
circuit.suppressed_until = None;
circuit.state = MeFamilyRuntimeState::Healthy;
info!(
?family,
"ME family suppression lifted after stable recovery probes"
);
}
}
}
_ => {
if degraded {
circuit.fail_streak = circuit.fail_streak.saturating_add(1);
circuit.recover_success_streak = 0;
circuit.state = MeFamilyRuntimeState::Degraded;
if allow_suppress && circuit.fail_streak >= FAMILY_SUPPRESS_FAIL_STREAK_THRESHOLD {
circuit.state = MeFamilyRuntimeState::Suppressed;
let until = now + Duration::from_secs(FAMILY_SUPPRESS_WINDOW_SECS);
circuit.suppressed_until = Some(until);
circuit.next_probe_at =
now + Duration::from_secs(FAMILY_RECOVER_PROBE_INTERVAL_SECS);
warn!(
?family,
fail_streak = circuit.fail_streak,
suppress_secs = FAMILY_SUPPRESS_WINDOW_SECS,
"ME family temporarily suppressed after repeated degradation"
);
}
} else {
circuit.fail_streak = 0;
circuit.recover_success_streak = 0;
circuit.suppressed_until = None;
circuit.state = MeFamilyRuntimeState::Healthy;
}
}
}
if previous_state != circuit.state {
circuit.state_since_at = now;
}
let suppressed_until_epoch_secs = circuit
.suppressed_until
.and_then(|until| {
if until > now {
Some(
now_epoch_secs
.saturating_add(until.saturating_duration_since(now).as_secs()),
)
} else {
None
}
})
.unwrap_or(0);
let state_since_epoch_secs = if previous_state == circuit.state {
pool.family_runtime_state_since_epoch_secs(family)
} else {
now_epoch_secs
};
pool.set_family_runtime_state(
family,
circuit.state,
state_since_epoch_secs,
suppressed_until_epoch_secs,
circuit.fail_streak,
circuit.recover_success_streak,
);
!matches!(circuit.state, MeFamilyRuntimeState::Suppressed) && degraded
}
fn draining_writer_timeout_expired(
pool: &MePool,
writer: &MeWriter,
@ -1746,13 +1964,19 @@ mod tests {
use tokio::sync::mpsc;
use tokio_util::sync::CancellationToken;
use super::reap_draining_writers;
use super::{
FamilyCircuitState, apply_family_circuit_result, reap_draining_writers,
should_run_family_check,
};
use crate::config::{GeneralConfig, MeRouteNoWriterMode, MeSocksKdfPolicy, MeWriterPickMode};
use crate::crypto::SecureRandom;
use crate::network::IpFamily;
use crate::network::probe::NetworkDecision;
use crate::stats::Stats;
use crate::transport::middle_proxy::codec::WriterCommand;
use crate::transport::middle_proxy::pool::{MePool, MeWriter, WriterContour};
use crate::transport::middle_proxy::pool::{
MeFamilyRuntimeState, MePool, MeWriter, WriterContour,
};
use crate::transport::middle_proxy::registry::ConnMeta;
async fn make_pool(me_pool_drain_threshold: u64) -> Arc<MePool> {
@ -1930,4 +2154,47 @@ mod tests {
assert_eq!(pool.registry.get_writer(conn_b).await.unwrap().writer_id, 20);
assert_eq!(pool.registry.get_writer(conn_c).await.unwrap().writer_id, 30);
}
#[tokio::test]
async fn suppressed_family_probe_skip_preserves_suppressed_state() {
let pool = make_pool(0).await;
let now = Instant::now();
let now_epoch_secs = MePool::now_epoch_secs();
let suppressed_until_epoch_secs = now_epoch_secs.saturating_add(60);
pool.set_family_runtime_state(
IpFamily::V6,
MeFamilyRuntimeState::Suppressed,
now_epoch_secs,
suppressed_until_epoch_secs,
7,
0,
);
let mut circuit = FamilyCircuitState {
state: MeFamilyRuntimeState::Suppressed,
state_since_at: now,
suppressed_until: Some(now + Duration::from_secs(60)),
next_probe_at: now + Duration::from_secs(5),
fail_streak: 7,
recover_success_streak: 0,
};
assert!(!should_run_family_check(&mut circuit, now));
assert!(!apply_family_circuit_result(
&pool,
IpFamily::V6,
&mut circuit,
None,
true,
now,
now_epoch_secs,
));
assert_eq!(circuit.state, MeFamilyRuntimeState::Suppressed);
assert_eq!(circuit.fail_streak, 7);
assert_eq!(circuit.recover_success_streak, 0);
assert_eq!(
pool.family_runtime_state(IpFamily::V6),
MeFamilyRuntimeState::Suppressed,
);
}
}

238
src/transport/middle_proxy/pool.rs
View File

@ -74,6 +74,64 @@ impl WriterContour {
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[repr(u8)]
pub(crate) enum MeFamilyRuntimeState {
Healthy = 0,
Degraded = 1,
Suppressed = 2,
Recovering = 3,
}
impl MeFamilyRuntimeState {
pub(crate) fn from_u8(value: u8) -> Self {
match value {
1 => Self::Degraded,
2 => Self::Suppressed,
3 => Self::Recovering,
_ => Self::Healthy,
}
}
pub(crate) fn as_str(self) -> &'static str {
match self {
Self::Healthy => "healthy",
Self::Degraded => "degraded",
Self::Suppressed => "suppressed",
Self::Recovering => "recovering",
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[repr(u8)]
pub(crate) enum MeDrainGateReason {
Open = 0,
CoverageQuorum = 1,
Redundancy = 2,
SuppressionActive = 3,
}
impl MeDrainGateReason {
pub(crate) fn from_u8(value: u8) -> Self {
match value {
1 => Self::CoverageQuorum,
2 => Self::Redundancy,
3 => Self::SuppressionActive,
_ => Self::Open,
}
}
pub(crate) fn as_str(self) -> &'static str {
match self {
Self::Open => "open",
Self::CoverageQuorum => "coverage_quorum",
Self::Redundancy => "redundancy",
Self::SuppressionActive => "suppression_active",
}
}
}
#[derive(Debug, Clone)]
pub struct SecretSnapshot {
pub epoch: u64,
@ -203,6 +261,20 @@ pub struct MePool {
pub(super) me_health_interval_ms_unhealthy: AtomicU64,
pub(super) me_health_interval_ms_healthy: AtomicU64,
pub(super) me_warn_rate_limit_ms: AtomicU64,
pub(super) me_family_v4_runtime_state: AtomicU8,
pub(super) me_family_v6_runtime_state: AtomicU8,
pub(super) me_family_v4_state_since_epoch_secs: AtomicU64,
pub(super) me_family_v6_state_since_epoch_secs: AtomicU64,
pub(super) me_family_v4_suppressed_until_epoch_secs: AtomicU64,
pub(super) me_family_v6_suppressed_until_epoch_secs: AtomicU64,
pub(super) me_family_v4_fail_streak: AtomicU32,
pub(super) me_family_v6_fail_streak: AtomicU32,
pub(super) me_family_v4_recover_success_streak: AtomicU32,
pub(super) me_family_v6_recover_success_streak: AtomicU32,
pub(super) me_last_drain_gate_route_quorum_ok: AtomicBool,
pub(super) me_last_drain_gate_redundancy_ok: AtomicBool,
pub(super) me_last_drain_gate_block_reason: AtomicU8,
pub(super) me_last_drain_gate_updated_at_epoch_secs: AtomicU64,
pub(super) runtime_ready: AtomicBool,
pool_size: usize,
pub(super) preferred_endpoints_by_dc: Arc<RwLock<HashMap<i32, Vec<SocketAddr>>>>,
@ -518,6 +590,20 @@ impl MePool {
me_health_interval_ms_unhealthy: AtomicU64::new(me_health_interval_ms_unhealthy.max(1)),
me_health_interval_ms_healthy: AtomicU64::new(me_health_interval_ms_healthy.max(1)),
me_warn_rate_limit_ms: AtomicU64::new(me_warn_rate_limit_ms.max(1)),
me_family_v4_runtime_state: AtomicU8::new(MeFamilyRuntimeState::Healthy as u8),
me_family_v6_runtime_state: AtomicU8::new(MeFamilyRuntimeState::Healthy as u8),
me_family_v4_state_since_epoch_secs: AtomicU64::new(Self::now_epoch_secs()),
me_family_v6_state_since_epoch_secs: AtomicU64::new(Self::now_epoch_secs()),
me_family_v4_suppressed_until_epoch_secs: AtomicU64::new(0),
me_family_v6_suppressed_until_epoch_secs: AtomicU64::new(0),
me_family_v4_fail_streak: AtomicU32::new(0),
me_family_v6_fail_streak: AtomicU32::new(0),
me_family_v4_recover_success_streak: AtomicU32::new(0),
me_family_v6_recover_success_streak: AtomicU32::new(0),
me_last_drain_gate_route_quorum_ok: AtomicBool::new(false),
me_last_drain_gate_redundancy_ok: AtomicBool::new(false),
me_last_drain_gate_block_reason: AtomicU8::new(MeDrainGateReason::Open as u8),
me_last_drain_gate_updated_at_epoch_secs: AtomicU64::new(Self::now_epoch_secs()),
runtime_ready: AtomicBool::new(false),
preferred_endpoints_by_dc: Arc::new(RwLock::new(preferred_endpoints_by_dc)),
})
@ -535,6 +621,153 @@ impl MePool {
self.runtime_ready.load(Ordering::Relaxed)
}
pub(super) fn set_family_runtime_state(
&self,
family: IpFamily,
state: MeFamilyRuntimeState,
state_since_epoch_secs: u64,
suppressed_until_epoch_secs: u64,
fail_streak: u32,
recover_success_streak: u32,
) {
match family {
IpFamily::V4 => {
self.me_family_v4_runtime_state
.store(state as u8, Ordering::Relaxed);
self.me_family_v4_state_since_epoch_secs
.store(state_since_epoch_secs, Ordering::Relaxed);
self.me_family_v4_suppressed_until_epoch_secs
.store(suppressed_until_epoch_secs, Ordering::Relaxed);
self.me_family_v4_fail_streak
.store(fail_streak, Ordering::Relaxed);
self.me_family_v4_recover_success_streak
.store(recover_success_streak, Ordering::Relaxed);
}
IpFamily::V6 => {
self.me_family_v6_runtime_state
.store(state as u8, Ordering::Relaxed);
self.me_family_v6_state_since_epoch_secs
.store(state_since_epoch_secs, Ordering::Relaxed);
self.me_family_v6_suppressed_until_epoch_secs
.store(suppressed_until_epoch_secs, Ordering::Relaxed);
self.me_family_v6_fail_streak
.store(fail_streak, Ordering::Relaxed);
self.me_family_v6_recover_success_streak
.store(recover_success_streak, Ordering::Relaxed);
}
}
}
pub(crate) fn family_runtime_state(&self, family: IpFamily) -> MeFamilyRuntimeState {
match family {
IpFamily::V4 => MeFamilyRuntimeState::from_u8(
self.me_family_v4_runtime_state.load(Ordering::Relaxed),
),
IpFamily::V6 => MeFamilyRuntimeState::from_u8(
self.me_family_v6_runtime_state.load(Ordering::Relaxed),
),
}
}
pub(crate) fn family_runtime_state_since_epoch_secs(&self, family: IpFamily) -> u64 {
match family {
IpFamily::V4 => self
.me_family_v4_state_since_epoch_secs
.load(Ordering::Relaxed),
IpFamily::V6 => self
.me_family_v6_state_since_epoch_secs
.load(Ordering::Relaxed),
}
}
pub(crate) fn family_suppressed_until_epoch_secs(&self, family: IpFamily) -> u64 {
match family {
IpFamily::V4 => self
.me_family_v4_suppressed_until_epoch_secs
.load(Ordering::Relaxed),
IpFamily::V6 => self
.me_family_v6_suppressed_until_epoch_secs
.load(Ordering::Relaxed),
}
}
pub(crate) fn family_fail_streak(&self, family: IpFamily) -> u32 {
match family {
IpFamily::V4 => self.me_family_v4_fail_streak.load(Ordering::Relaxed),
IpFamily::V6 => self.me_family_v6_fail_streak.load(Ordering::Relaxed),
}
}
pub(crate) fn family_recover_success_streak(&self, family: IpFamily) -> u32 {
match family {
IpFamily::V4 => self
.me_family_v4_recover_success_streak
.load(Ordering::Relaxed),
IpFamily::V6 => self
.me_family_v6_recover_success_streak
.load(Ordering::Relaxed),
}
}
pub(crate) fn is_family_temporarily_suppressed(
&self,
family: IpFamily,
now_epoch_secs: u64,
) -> bool {
self.family_suppressed_until_epoch_secs(family) > now_epoch_secs
}
pub(super) fn family_enabled_for_drain_coverage(
&self,
family: IpFamily,
now_epoch_secs: u64,
) -> bool {
let configured = match family {
IpFamily::V4 => self.decision.ipv4_me,
IpFamily::V6 => self.decision.ipv6_me,
};
configured && !self.is_family_temporarily_suppressed(family, now_epoch_secs)
}
pub(super) fn set_last_drain_gate(
&self,
route_quorum_ok: bool,
redundancy_ok: bool,
block_reason: MeDrainGateReason,
updated_at_epoch_secs: u64,
) {
self.me_last_drain_gate_route_quorum_ok
.store(route_quorum_ok, Ordering::Relaxed);
self.me_last_drain_gate_redundancy_ok
.store(redundancy_ok, Ordering::Relaxed);
self.me_last_drain_gate_block_reason
.store(block_reason as u8, Ordering::Relaxed);
self.me_last_drain_gate_updated_at_epoch_secs
.store(updated_at_epoch_secs, Ordering::Relaxed);
}
pub(crate) fn last_drain_gate_route_quorum_ok(&self) -> bool {
self.me_last_drain_gate_route_quorum_ok
.load(Ordering::Relaxed)
}
pub(crate) fn last_drain_gate_redundancy_ok(&self) -> bool {
self.me_last_drain_gate_redundancy_ok
.load(Ordering::Relaxed)
}
pub(crate) fn last_drain_gate_block_reason(&self) -> MeDrainGateReason {
MeDrainGateReason::from_u8(
self.me_last_drain_gate_block_reason
.load(Ordering::Relaxed),
)
}
pub(crate) fn last_drain_gate_updated_at_epoch_secs(&self) -> u64 {
self.me_last_drain_gate_updated_at_epoch_secs
.load(Ordering::Relaxed)
}
pub fn update_runtime_reinit_policy(
&self,
hardswap: bool,
@ -1021,9 +1254,10 @@ impl MePool {
}
pub(super) async fn active_coverage_required_total(&self) -> usize {
let now_epoch_secs = Self::now_epoch_secs();
let mut endpoints_by_dc = HashMap::<i32, HashSet<SocketAddr>>::new();
if self.decision.ipv4_me {
if self.family_enabled_for_drain_coverage(IpFamily::V4, now_epoch_secs) {
let map = self.proxy_map_v4.read().await;
for (dc, addrs) in map.iter() {
let entry = endpoints_by_dc.entry(*dc).or_default();
@ -1033,7 +1267,7 @@ impl MePool {
}
}
if self.decision.ipv6_me {
if self.family_enabled_for_drain_coverage(IpFamily::V6, now_epoch_secs) {
let map = self.proxy_map_v6.read().await;
for (dc, addrs) in map.iter() {
let entry = endpoints_by_dc.entry(*dc).or_default();

5
src/transport/middle_proxy/pool_refill.rs
View File

@ -164,9 +164,10 @@ impl MePool {
}
async fn endpoints_for_dc(&self, target_dc: i32) -> Vec<SocketAddr> {
let now_epoch_secs = Self::now_epoch_secs();
let mut endpoints = HashSet::<SocketAddr>::new();
if self.decision.ipv4_me {
if self.family_enabled_for_drain_coverage(IpFamily::V4, now_epoch_secs) {
let map = self.proxy_map_v4.read().await;
if let Some(addrs) = map.get(&target_dc) {
for (ip, port) in addrs {
@ -175,7 +176,7 @@ impl MePool {
}
}
if self.decision.ipv6_me {
if self.family_enabled_for_drain_coverage(IpFamily::V6, now_epoch_secs) {
let map = self.proxy_map_v6.read().await;
if let Some(addrs) = map.get(&target_dc) {
for (ip, port) in addrs {

55
src/transport/middle_proxy/pool_reinit.rs
View File

@ -11,8 +11,9 @@ use tracing::{debug, info, warn};
use std::collections::hash_map::DefaultHasher;
use crate::crypto::SecureRandom;
use crate::network::IpFamily;
use super::pool::{MePool, WriterContour};
use super::pool::{MeDrainGateReason, MePool, WriterContour};
const ME_HARDSWAP_PENDING_TTL_SECS: u64 = 1800;
@ -120,9 +121,10 @@ impl MePool {
}
async fn desired_dc_endpoints(&self) -> HashMap<i32, HashSet<SocketAddr>> {
let now_epoch_secs = Self::now_epoch_secs();
let mut out: HashMap<i32, HashSet<SocketAddr>> = HashMap::new();
if self.decision.ipv4_me {
if self.family_enabled_for_drain_coverage(IpFamily::V4, now_epoch_secs) {
let map_v4 = self.proxy_map_v4.read().await.clone();
for (dc, addrs) in map_v4 {
let entry = out.entry(dc).or_default();
@ -132,7 +134,7 @@ impl MePool {
}
}
if self.decision.ipv6_me {
if self.family_enabled_for_drain_coverage(IpFamily::V6, now_epoch_secs) {
let map_v6 = self.proxy_map_v6.read().await.clone();
for (dc, addrs) in map_v6 {
let entry = out.entry(dc).or_default();
@ -313,13 +315,23 @@ impl MePool {
pub async fn zero_downtime_reinit_after_map_change(self: &Arc<Self>, rng: &SecureRandom) {
let desired_by_dc = self.desired_dc_endpoints().await;
let now_epoch_secs = Self::now_epoch_secs();
let v4_suppressed = self.is_family_temporarily_suppressed(IpFamily::V4, now_epoch_secs);
let v6_suppressed = self.is_family_temporarily_suppressed(IpFamily::V6, now_epoch_secs);
if desired_by_dc.is_empty() {
warn!("ME endpoint map is empty; skipping stale writer drain");
let reason = if (self.decision.ipv4_me && v4_suppressed)
|| (self.decision.ipv6_me && v6_suppressed)
{
MeDrainGateReason::SuppressionActive
} else {
MeDrainGateReason::CoverageQuorum
};
self.set_last_drain_gate(false, false, reason, now_epoch_secs);
return;
}
let desired_map_hash = Self::desired_map_hash(&desired_by_dc);
let now_epoch_secs = Self::now_epoch_secs();
let previous_generation = self.current_generation();
let hardswap = self.hardswap.load(Ordering::Relaxed);
let generation = if hardswap {
@ -390,7 +402,17 @@ impl MePool {
.load(Ordering::Relaxed),
);
let (coverage_ratio, missing_dc) = Self::coverage_ratio(&desired_by_dc, &active_writer_addrs);
let mut route_quorum_ok = coverage_ratio >= min_ratio;
let mut redundancy_ok = missing_dc.is_empty();
let mut redundancy_missing_dc = missing_dc.clone();
let mut gate_coverage_ratio = coverage_ratio;
if !hardswap && coverage_ratio < min_ratio {
self.set_last_drain_gate(
false,
redundancy_ok,
MeDrainGateReason::CoverageQuorum,
now_epoch_secs,
);
warn!(
previous_generation,
generation,
@ -411,7 +433,17 @@ impl MePool {
.collect();
let (fresh_coverage_ratio, fresh_missing_dc) =
Self::coverage_ratio(&desired_by_dc, &fresh_writer_addrs);
if !fresh_missing_dc.is_empty() {
route_quorum_ok = fresh_coverage_ratio >= min_ratio;
redundancy_ok = fresh_missing_dc.is_empty();
redundancy_missing_dc = fresh_missing_dc.clone();
gate_coverage_ratio = fresh_coverage_ratio;
if fresh_coverage_ratio < min_ratio {
self.set_last_drain_gate(
false,
redundancy_ok,
MeDrainGateReason::CoverageQuorum,
now_epoch_secs,
);
warn!(
previous_generation,
generation,
@ -421,13 +453,16 @@ impl MePool {
);
return;
}
} else if !missing_dc.is_empty() {
}
self.set_last_drain_gate(route_quorum_ok, redundancy_ok, MeDrainGateReason::Open, now_epoch_secs);
if !redundancy_ok {
warn!(
missing_dc = ?missing_dc,
// Keep stale writers alive when fresh coverage is incomplete.
"ME reinit coverage incomplete; keeping stale writers"
missing_dc = ?redundancy_missing_dc,
coverage_ratio = format_args!("{gate_coverage_ratio:.3}"),
min_ratio = format_args!("{min_ratio:.3}"),
"ME reinit proceeds with weighted quorum while some DC groups remain uncovered"
);
return;
}
if hardswap {

51
src/transport/middle_proxy/pool_runtime_api.rs
View File

@ -1,7 +1,7 @@
use std::collections::HashMap;
use std::time::Instant;
use super::pool::{MePool, RefillDcKey};
use super::pool::{MeDrainGateReason, MePool, RefillDcKey};
use crate::network::IpFamily;
#[derive(Clone, Debug)]
@ -36,6 +36,24 @@ pub(crate) struct MeApiNatStunSnapshot {
pub stun_backoff_remaining_ms: Option<u64>,
}
#[derive(Clone, Debug)]
pub(crate) struct MeApiFamilyStateSnapshot {
pub family: &'static str,
pub state: &'static str,
pub state_since_epoch_secs: u64,
pub suppressed_until_epoch_secs: Option<u64>,
pub fail_streak: u32,
pub recover_success_streak: u32,
}
#[derive(Clone, Debug)]
pub(crate) struct MeApiDrainGateSnapshot {
pub route_quorum_ok: bool,
pub redundancy_ok: bool,
pub block_reason: &'static str,
pub updated_at_epoch_secs: u64,
}
impl MePool {
pub(crate) async fn api_refill_snapshot(&self) -> MeApiRefillSnapshot {
let inflight_endpoints_total = self.refill_inflight.lock().await.len();
@ -125,4 +143,35 @@ impl MePool {
stun_backoff_remaining_ms,
}
}
pub(crate) fn api_family_state_snapshot(&self) -> Vec<MeApiFamilyStateSnapshot> {
[IpFamily::V4, IpFamily::V6]
.into_iter()
.map(|family| {
let state = self.family_runtime_state(family);
let suppressed_until = self.family_suppressed_until_epoch_secs(family);
MeApiFamilyStateSnapshot {
family: match family {
IpFamily::V4 => "v4",
IpFamily::V6 => "v6",
},
state: state.as_str(),
state_since_epoch_secs: self.family_runtime_state_since_epoch_secs(family),
suppressed_until_epoch_secs: (suppressed_until != 0).then_some(suppressed_until),
fail_streak: self.family_fail_streak(family),
recover_success_streak: self.family_recover_success_streak(family),
}
})
.collect()
}
pub(crate) fn api_drain_gate_snapshot(&self) -> MeApiDrainGateSnapshot {
let reason: MeDrainGateReason = self.last_drain_gate_block_reason();
MeApiDrainGateSnapshot {
route_quorum_ok: self.last_drain_gate_route_quorum_ok(),
redundancy_ok: self.last_drain_gate_redundancy_ok(),
block_reason: reason.as_str(),
updated_at_epoch_secs: self.last_drain_gate_updated_at_epoch_secs(),
}
}
}