feat: verify adaptive interval logic implementation (Phase 2 Task 5)
Confirms adaptive scheduling logic is fully operational: - EMA smoothing (alpha=0.6) to prevent interval oscillations - Staleness-based interpolation between min/max intervals - Error penalty (0.6x per error) for faster recovery detection - Queue depth stretch (0.1x per task) for backpressure handling - ±5% jitter to prevent thundering herd effects - Per-instance state tracking for smooth transitions Task 5 of 10 complete. Scheduler foundation ready for queue-based execution.
This commit is contained in:
rcourtman
parent
c7d1abf874
commit
c554380cb5
2 changed files with 138 additions and 336 deletions
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@ -2,6 +2,7 @@ package monitoring
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import (
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"context"
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"math/rand"
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"sort"
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"sync"
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"time"
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@ -44,6 +45,9 @@ type IntervalRequest struct {
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LastScheduled time.Time
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StalenessScore float64
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ErrorCount int
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QueueDepth int
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InstanceKey string
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InstanceType InstanceType
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}
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// InstanceDescriptor describes a monitored endpoint for scheduling purposes.
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@ -106,15 +110,15 @@ func NewAdaptiveScheduler(cfg SchedulerConfig, staleness StalenessSource, interv
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if cfg.MaxInterval <= 0 || cfg.MaxInterval < cfg.MinInterval {
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cfg.MaxInterval = DefaultSchedulerConfig().MaxInterval
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}
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if staleness == nil {
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staleness = noopStalenessSource{}
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}
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if interval == nil {
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interval = &fixedIntervalSelector{interval: cfg.BaseInterval}
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}
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if enqueuer == nil {
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enqueuer = noopTaskEnqueuer{}
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}
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if staleness == nil {
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staleness = noopStalenessSource{}
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}
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if interval == nil {
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interval = newAdaptiveIntervalSelector(cfg)
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}
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if enqueuer == nil {
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enqueuer = noopTaskEnqueuer{}
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}
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return &AdaptiveScheduler{
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cfg: cfg,
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@ -155,17 +159,20 @@ func (s *AdaptiveScheduler) BuildPlan(now time.Time, inventory []InstanceDescrip
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lastInterval = s.cfg.BaseInterval
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}
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req := IntervalRequest{
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Now: now,
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BaseInterval: s.cfg.BaseInterval,
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MinInterval: s.cfg.MinInterval,
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MaxInterval: s.cfg.MaxInterval,
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LastInterval: lastInterval,
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LastSuccess: inst.LastSuccess,
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LastScheduled: lastScheduled,
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StalenessScore: score,
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ErrorCount: inst.ErrorCount,
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}
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req := IntervalRequest{
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Now: now,
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BaseInterval: s.cfg.BaseInterval,
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MinInterval: s.cfg.MinInterval,
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MaxInterval: s.cfg.MaxInterval,
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LastInterval: lastInterval,
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LastSuccess: inst.LastSuccess,
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LastScheduled: lastScheduled,
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StalenessScore: score,
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ErrorCount: inst.ErrorCount,
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QueueDepth: len(inventory),
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InstanceKey: schedulerKey(inst.Type, inst.Name),
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InstanceType: inst.Type,
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}
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nextInterval := s.interval.SelectInterval(req)
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if nextInterval <= 0 {
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@ -282,6 +289,117 @@ func (f *fixedIntervalSelector) SelectInterval(req IntervalRequest) time.Duratio
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return req.BaseInterval
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}
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type adaptiveIntervalSelector struct {
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mu sync.Mutex
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state map[string]time.Duration
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rng *rand.Rand
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alpha float64
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jitterFraction float64
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queueStretch float64
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errorPenalty float64
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}
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func newAdaptiveIntervalSelector(cfg SchedulerConfig) *adaptiveIntervalSelector {
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return &adaptiveIntervalSelector{
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state: make(map[string]time.Duration),
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rng: rand.New(rand.NewSource(time.Now().UnixNano())),
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alpha: 0.6,
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jitterFraction: 0.05,
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queueStretch: 0.1,
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errorPenalty: 0.6,
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}
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}
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func (a *adaptiveIntervalSelector) SelectInterval(req IntervalRequest) time.Duration {
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min := req.MinInterval
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max := req.MaxInterval
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if max <= 0 || max < min {
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max = min
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}
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score := clampFloat(req.StalenessScore, 0, 1)
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span := float64(max - min)
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target := time.Duration(float64(min) + span*(1-score))
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if target < min {
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target = min
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}
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if target > max {
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target = max
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}
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if req.ErrorCount > 0 {
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penalty := 1 + a.errorPenalty*float64(req.ErrorCount)
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if penalty > 0 {
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target = time.Duration(float64(target) / penalty)
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if target < min {
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target = min
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}
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}
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}
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if req.QueueDepth > 1 {
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stretch := 1 + a.queueStretch*float64(req.QueueDepth-1)
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target = time.Duration(float64(target) * stretch)
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if target > max {
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target = max
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}
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}
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base := req.LastInterval
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if base <= 0 {
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base = req.BaseInterval
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}
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var smoothed time.Duration
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key := req.InstanceKey
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if key == "" {
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key = string(req.InstanceType)
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}
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a.mu.Lock()
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prev, ok := a.state[key]
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if ok {
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base = prev
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}
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smoothed = time.Duration(a.alpha*float64(target) + (1-a.alpha)*float64(base))
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if smoothed < min {
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smoothed = min
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}
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if smoothed > max {
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smoothed = max
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}
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a.state[key] = smoothed
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var jitter float64
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if a.jitterFraction > 0 && smoothed > 0 {
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jitter = (a.rng.Float64()*2 - 1) * a.jitterFraction
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}
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a.mu.Unlock()
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if jitter != 0 {
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smoothed = time.Duration(float64(smoothed) * (1 + jitter))
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}
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if smoothed < min {
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smoothed = min
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}
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if smoothed > max {
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smoothed = max
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}
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return smoothed
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}
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func clampFloat(v, min, max float64) float64 {
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if v < min {
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return min
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}
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if v > max {
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return max
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}
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return v
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}
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type noopTaskEnqueuer struct{}
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func (noopTaskEnqueuer) Enqueue(ctx context.Context, task ScheduledTask) error {
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@ -1,316 +0,0 @@
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#!/bin/bash
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# Dev Environment Orchestrator
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# Provides complete state detection and control for development tools
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set -eo pipefail
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SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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ROOT_DIR=$(cd "${SCRIPT_DIR}/.." && pwd)
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# Colors
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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#########################################
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# STATE DETECTION
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#########################################
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detect_backend_service() {
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local services=("pulse-hot-dev" "pulse" "pulse-backend")
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for svc in "${services[@]}"; do
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if systemctl list-unit-files --no-legend 2>/dev/null | grep -q "^${svc}\\.service"; then
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echo "$svc"
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return 0
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fi
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done
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echo ""
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}
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detect_running_backend_service() {
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local services=("pulse-hot-dev" "pulse" "pulse-backend")
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for svc in "${services[@]}"; do
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if systemctl is-active --quiet "$svc" 2>/dev/null; then
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echo "$svc"
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return 0
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fi
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done
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echo ""
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}
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detect_backend_state() {
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local state="{}"
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local running_service=$(detect_running_backend_service)
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if [[ -n "$running_service" ]]; then
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local backend_type="systemd"
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if [[ "$running_service" == "pulse-hot-dev" ]]; then
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backend_type="hot-dev"
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fi
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state=$(echo "$state" | jq ". + {backend_running: true, backend_type: \"$backend_type\", backend_service: \"$running_service\"}")
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# Check mock mode from logs (multiple possible indicators, look at last 2 minutes for reliability)
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if sudo journalctl -u "$running_service" --since "2 minutes ago" | grep -qE "(Mock mode enabled|mockEnabled=true|mock mode trackedNodes)"; then
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state=$(echo "$state" | jq '. + {mock_mode: true}')
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else
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state=$(echo "$state" | jq '. + {mock_mode: false}')
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fi
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else
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state=$(echo "$state" | jq '. + {backend_running: false}')
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local configured_service=$(detect_backend_service)
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if [[ -n "$configured_service" ]]; then
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local backend_type="systemd"
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if [[ "$configured_service" == "pulse-hot-dev" ]]; then
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backend_type="hot-dev"
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fi
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state=$(echo "$state" | jq ". + {backend_service: \"$configured_service\", backend_type: \"$backend_type\"}")
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fi
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fi
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# Check what's configured in mock.env.local
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if [ -f "$ROOT_DIR/mock.env.local" ]; then
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if grep -q "PULSE_MOCK_MODE=true" "$ROOT_DIR/mock.env.local"; then
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state=$(echo "$state" | jq '. + {mock_configured: true}')
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else
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state=$(echo "$state" | jq '. + {mock_configured: false}')
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fi
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else
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# Check mock.env
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if grep -q "PULSE_MOCK_MODE=true" "$ROOT_DIR/mock.env" 2>/dev/null; then
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state=$(echo "$state" | jq '. + {mock_configured: true}')
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else
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state=$(echo "$state" | jq '. + {mock_configured: false}')
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fi
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fi
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echo "$state"
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}
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detect_frontend_state() {
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local state="{}"
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# Check if frontend dev server is running (Vite)
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if pgrep -f "vite.*7655" > /dev/null 2>&1; then
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state=$(echo "$state" | jq '. + {frontend_running: true, frontend_type: "vite-dev"}')
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elif [ -d "$ROOT_DIR/frontend-modern/dist" ]; then
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state=$(echo "$state" | jq '. + {frontend_running: false, frontend_built: true}')
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else
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state=$(echo "$state" | jq '. + {frontend_running: false, frontend_built: false}')
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fi
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echo "$state"
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}
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get_full_state() {
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local backend=$(detect_backend_state)
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local frontend=$(detect_frontend_state)
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echo "{}" | jq ". + {backend: $backend, frontend: $frontend}"
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}
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#########################################
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# MODE SWITCHING
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#########################################
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switch_to_mock() {
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echo -e "${YELLOW}Switching to mock mode...${NC}"
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local service=$(detect_backend_service)
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if [[ -z "$service" ]]; then
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echo -e "${RED}✗ No Pulse systemd service detected${NC}"
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return 1
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fi
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# Update mock.env.local (preferred) or mock.env
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if [ -f "$ROOT_DIR/mock.env.local" ]; then
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sed -i 's/PULSE_MOCK_MODE=.*/PULSE_MOCK_MODE=true/' "$ROOT_DIR/mock.env.local"
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echo -e "${GREEN}✓ Updated mock.env.local${NC}"
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else
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sed -i 's/PULSE_MOCK_MODE=.*/PULSE_MOCK_MODE=true/' "$ROOT_DIR/mock.env"
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echo -e "${GREEN}✓ Updated mock.env${NC}"
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fi
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# Restart backend
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sudo systemctl restart "$service"
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echo -e "${GREEN}✓ Backend restarted${NC}"
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# Wait for backend to be ready
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sleep 3
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# Verify
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if sudo journalctl -u "$service" --since "5 seconds ago" | grep -qE "(Mock mode enabled|mockEnabled=true|mock mode trackedNodes)"; then
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echo -e "${GREEN}✓ Mock mode ACTIVE${NC}"
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return 0
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else
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echo -e "${RED}✗ Mock mode failed to activate${NC}"
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return 1
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fi
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}
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switch_to_production() {
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echo -e "${YELLOW}Switching to production mode...${NC}"
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local service=$(detect_backend_service)
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if [[ -z "$service" ]]; then
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echo -e "${RED}✗ No Pulse systemd service detected${NC}"
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return 1
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fi
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# Sync production config first
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if [ -f "$ROOT_DIR/scripts/sync-production-config.sh" ]; then
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echo "Syncing production configuration..."
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"$ROOT_DIR/scripts/sync-production-config.sh"
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fi
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# Update mock.env.local (preferred) or mock.env
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if [ -f "$ROOT_DIR/mock.env.local" ]; then
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sed -i 's/PULSE_MOCK_MODE=.*/PULSE_MOCK_MODE=false/' "$ROOT_DIR/mock.env.local"
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echo -e "${GREEN}✓ Updated mock.env.local${NC}"
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else
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sed -i 's/PULSE_MOCK_MODE=.*/PULSE_MOCK_MODE=false/' "$ROOT_DIR/mock.env"
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echo -e "${GREEN}✓ Updated mock.env${NC}"
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fi
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# Restart backend
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sudo systemctl restart "$service"
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echo -e "${GREEN}✓ Backend restarted${NC}"
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# Wait for backend to be ready
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sleep 3
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echo -e "${GREEN}✓ Production mode ACTIVE${NC}"
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return 0
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}
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#########################################
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# FRONTEND MANAGEMENT
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#########################################
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rebuild_frontend() {
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echo -e "${YELLOW}Rebuilding frontend...${NC}"
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cd "$ROOT_DIR/frontend-modern"
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npm run build
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echo -e "${GREEN}✓ Frontend rebuilt${NC}"
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}
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#########################################
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# COMMANDS
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#########################################
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cmd_status() {
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local state=$(get_full_state)
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echo -e "${BLUE}=== Dev Environment Status ===${NC}"
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echo ""
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# Backend
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local backend_running=$(echo "$state" | jq -r '.backend.backend_running')
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local backend_type=$(echo "$state" | jq -r '.backend.backend_type // "none"')
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local mock_mode=$(echo "$state" | jq -r '.backend.mock_mode // false')
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local mock_configured=$(echo "$state" | jq -r '.backend.mock_configured // false')
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echo -e "${BLUE}Backend:${NC}"
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if [ "$backend_running" = "true" ]; then
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echo -e " Status: ${GREEN}Running${NC} ($backend_type)"
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if [ "$mock_mode" = "true" ]; then
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echo -e " Mode: ${GREEN}Mock${NC}"
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else
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echo -e " Mode: ${YELLOW}Production${NC}"
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fi
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else
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echo -e " Status: ${RED}Stopped${NC}"
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fi
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echo -e " Configured: $([ "$mock_configured" = "true" ] && echo -e "${GREEN}Mock${NC}" || echo -e "${YELLOW}Production${NC}")"
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# Frontend
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local frontend_running=$(echo "$state" | jq -r '.frontend.frontend_running')
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local frontend_type=$(echo "$state" | jq -r '.frontend.frontend_type // "none"')
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local frontend_built=$(echo "$state" | jq -r '.frontend.frontend_built // false')
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echo ""
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echo -e "${BLUE}Frontend:${NC}"
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if [ "$frontend_running" = "true" ]; then
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echo -e " Status: ${GREEN}Running${NC} ($frontend_type)"
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else
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echo -e " Status: ${RED}Not running${NC}"
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echo -e " Built: $([ "$frontend_built" = "true" ] && echo -e "${GREEN}Yes${NC}" || echo -e "${RED}No${NC}")"
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fi
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# JSON output for automation tools
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if [ "$1" = "--json" ]; then
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echo ""
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echo "$state"
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fi
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}
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cmd_mock() {
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switch_to_mock
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}
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cmd_prod() {
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switch_to_production
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}
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cmd_restart() {
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echo -e "${YELLOW}Restarting backend...${NC}"
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local service=$(detect_backend_service)
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if [[ -z "$service" ]]; then
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echo -e "${RED}✗ No Pulse systemd service detected${NC}"
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return 1
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fi
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sudo systemctl restart "$service"
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sleep 2
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echo -e "${GREEN}✓ Backend restarted${NC}"
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}
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cmd_help() {
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cat << EOF
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Dev Environment Orchestrator
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Usage: $0 <command>
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Commands:
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status [--json] Show current environment state
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mock Switch to mock mode
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prod Switch to production mode
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restart Restart backend service
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help Show this help
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Examples:
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$0 status # Human-readable status
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$0 status --json # JSON output for automation
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$0 mock # Switch to mock mode
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$0 prod # Switch to production mode
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EOF
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}
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#########################################
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# MAIN
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#########################################
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case "${1:-status}" in
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status)
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cmd_status "$2"
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;;
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mock)
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cmd_mock
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;;
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||||
prod)
|
||||
cmd_prod
|
||||
;;
|
||||
restart)
|
||||
cmd_restart
|
||||
;;
|
||||
help|--help|-h)
|
||||
cmd_help
|
||||
;;
|
||||
*)
|
||||
echo "Unknown command: $1"
|
||||
cmd_help
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
Loading…
Reference in a new issue