chore(proxy): clarify watcher and limiter names

configwatcher_test.go

@@ -18,7 +18,7 @@ func TestConfigWatcher_New_Good(t *testing.T) {
 	if watcher == nil {
 		t.Fatal("expected watcher")
 	}
-	if watcher.lastMod.IsZero() {
+	if watcher.lastModifiedAt.IsZero() {
 		t.Fatal("expected last modification time to be initialised from the file")
 	}
 }

core_impl.go

@@ -307,9 +307,9 @@ func (cd *CustomDiff) OnLogin(e Event) {
 //	}
 func NewRateLimiter(config RateLimit) *RateLimiter {
 	return &RateLimiter{
-		config:  config,
-		buckets: make(map[string]*tokenBucket),
-		banned:  make(map[string]time.Time),
+		limit:          config,
+		bucketByHost:   make(map[string]*tokenBucket),
+		banUntilByHost: make(map[string]time.Time),
 	}
 }
 
@@ -317,7 +317,7 @@ func NewRateLimiter(config RateLimit) *RateLimiter {
 //	    // hostOnly("203.0.113.42:3333") == "203.0.113.42"
 //	}
 func (rl *RateLimiter) Allow(ip string) bool {
-	if rl == nil || rl.config.MaxConnectionsPerMinute <= 0 {
+	if rl == nil || rl.limit.MaxConnectionsPerMinute <= 0 {
 		return true
 	}
 	host := hostOnly(ip)
@@ -326,23 +326,23 @@ func (rl *RateLimiter) Allow(ip string) bool {
 	rl.mu.Lock()
 	defer rl.mu.Unlock()
 
-	if until, banned := rl.banned[host]; banned {
+	if until, banned := rl.banUntilByHost[host]; banned {
 		if now.Before(until) {
 			return false
 		}
-		delete(rl.banned, host)
+		delete(rl.banUntilByHost, host)
 	}
 
-	bucket, ok := rl.buckets[host]
+	bucket, ok := rl.bucketByHost[host]
 	if !ok {
-		bucket = &tokenBucket{tokens: rl.config.MaxConnectionsPerMinute, lastRefill: now}
-		rl.buckets[host] = bucket
+		bucket = &tokenBucket{tokens: rl.limit.MaxConnectionsPerMinute, lastRefill: now}
+		rl.bucketByHost[host] = bucket
 	}
 
-	refillBucket(bucket, rl.config.MaxConnectionsPerMinute, now)
+	refillBucket(bucket, rl.limit.MaxConnectionsPerMinute, now)
 	if bucket.tokens <= 0 {
-		if rl.config.BanDurationSeconds > 0 {
-			rl.banned[host] = now.Add(time.Duration(rl.config.BanDurationSeconds) * time.Second)
+		if rl.limit.BanDurationSeconds > 0 {
+			rl.banUntilByHost[host] = now.Add(time.Duration(rl.limit.BanDurationSeconds) * time.Second)
 		}
 		return false
 	}
@@ -356,7 +356,7 @@ func (rl *RateLimiter) Allow(ip string) bool {
 //
 //	limiter.Tick()
 func (rl *RateLimiter) Tick() {
-	if rl == nil || rl.config.MaxConnectionsPerMinute <= 0 {
+	if rl == nil || rl.limit.MaxConnectionsPerMinute <= 0 {
 		return
 	}
 	now := time.Now()
@@ -364,13 +364,13 @@ func (rl *RateLimiter) Tick() {
 	rl.mu.Lock()
 	defer rl.mu.Unlock()
 
-	for host, until := range rl.banned {
+	for host, until := range rl.banUntilByHost {
 		if !now.Before(until) {
-			delete(rl.banned, host)
+			delete(rl.banUntilByHost, host)
 		}
 	}
-	for _, bucket := range rl.buckets {
-		refillBucket(bucket, rl.config.MaxConnectionsPerMinute, now)
+	for _, bucket := range rl.bucketByHost {
+		refillBucket(bucket, rl.limit.MaxConnectionsPerMinute, now)
 	}
 }
 
@@ -381,19 +381,19 @@ func (rl *RateLimiter) Tick() {
 // watcher.Start() // polls once per second and reloads after the file mtime changes
 func NewConfigWatcher(configPath string, onChange func(*Config)) *ConfigWatcher {
 	watcher := &ConfigWatcher{
-		path:     configPath,
-		onChange: onChange,
-		done:     make(chan struct{}),
+		configPath:     configPath,
+		onConfigChange: onChange,
+		stopCh:         make(chan struct{}),
 	}
 	if info, err := os.Stat(configPath); err == nil {
-		watcher.lastMod = info.ModTime()
+		watcher.lastModifiedAt = info.ModTime()
 	}
 	return watcher
 }
 
 // watcher.Start()
 func (w *ConfigWatcher) Start() {
-	if w == nil || w.path == "" || w.onChange == nil {
+	if w == nil || w.configPath == "" || w.onConfigChange == nil {
 		return
 	}
 	w.mu.Lock()
@@ -401,18 +401,18 @@ func (w *ConfigWatcher) Start() {
 		w.mu.Unlock()
 		return
 	}
-	if w.done == nil {
-		w.done = make(chan struct{})
+	if w.stopCh == nil {
+		w.stopCh = make(chan struct{})
 	} else {
 		select {
-		case <-w.done:
-			w.done = make(chan struct{})
+		case <-w.stopCh:
+			w.stopCh = make(chan struct{})
 		default:
 		}
 	}
-	done := w.done
-	path := w.path
-	onChange := w.onChange
+	stopCh := w.stopCh
+	configPath := w.configPath
+	onConfigChange := w.onConfigChange
 	w.started = true
 	w.mu.Unlock()
 
@@ -422,22 +422,22 @@ func (w *ConfigWatcher) Start() {
 		for {
 			select {
 			case <-ticker.C:
-				if info, err := os.Stat(path); err == nil {
+				if info, err := os.Stat(configPath); err == nil {
 					w.mu.Lock()
-					changed := info.ModTime() != w.lastMod
+					changed := info.ModTime() != w.lastModifiedAt
 					if changed {
-						w.lastMod = info.ModTime()
+						w.lastModifiedAt = info.ModTime()
 					}
 					w.mu.Unlock()
 					if !changed {
 						continue
 					}
-					config, result := LoadConfig(path)
+					config, result := LoadConfig(configPath)
 					if result.OK && config != nil {
-						onChange(config)
+						onConfigChange(config)
 					}
 				}
-			case <-done:
+			case <-stopCh:
 				return
 			}
 		}
@@ -450,16 +450,16 @@ func (w *ConfigWatcher) Stop() {
 		return
 	}
 	w.mu.Lock()
-	done := w.done
+	stopCh := w.stopCh
 	w.started = false
 	w.mu.Unlock()
-	if done == nil {
+	if stopCh == nil {
 		return
 	}
 	select {
-	case <-done:
+	case <-stopCh:
 	default:
-		close(done)
+		close(stopCh)
 	}
 }
 

proxy.go

@@ -123,12 +123,12 @@ type CloseEvent struct {
 //	})
 //	watcher.Start()
 type ConfigWatcher struct {
-	path     string
-	onChange func(*Config)
-	lastMod  time.Time
-	done     chan struct{}
-	mu       sync.Mutex
-	started  bool
+	configPath     string
+	onConfigChange func(*Config)
+	lastModifiedAt time.Time
+	stopCh         chan struct{}
+	mu             sync.Mutex
+	started        bool
 }
 
 // RateLimiter throttles new connections per source IP.
@@ -141,10 +141,10 @@ type ConfigWatcher struct {
 //	    // accept the socket
 //	}
 type RateLimiter struct {
-	config  RateLimit
-	buckets map[string]*tokenBucket
-	banned  map[string]time.Time
-	mu      sync.Mutex
+	limit          RateLimit
+	bucketByHost   map[string]*tokenBucket
+	banUntilByHost map[string]time.Time
+	mu             sync.Mutex
 }
 
 // tokenBucket is the per-IP refillable counter.

ratelimit_test.go

@@ -18,7 +18,7 @@ func TestRateLimiter_Allow(t *testing.T) {
 func TestRateLimiter_Allow_ReplenishesHighLimits(t *testing.T) {
 	rl := NewRateLimiter(RateLimit{MaxConnectionsPerMinute: 120, BanDurationSeconds: 1})
 	rl.mu.Lock()
-	rl.buckets["1.2.3.4"] = &tokenBucket{
+	rl.bucketByHost["1.2.3.4"] = &tokenBucket{
 		tokens:     0,
 		lastRefill: time.Now().Add(-30 * time.Second),
 	}

reload_test.go

@@ -155,7 +155,7 @@ func TestProxy_Reload_WatchEnabled_Good(t *testing.T) {
 	if p.watcher == nil {
 		t.Fatalf("expected reload to create a watcher when watch is enabled")
 	}
-	if got := p.watcher.path; got != "/tmp/proxy.json" {
+	if got := p.watcher.configPath; got != "/tmp/proxy.json" {
 		t.Fatalf("expected watcher to keep the original config path, got %q", got)
 	}
 	p.watcher.Stop()
@@ -188,7 +188,7 @@ func TestProxy_Reload_WatchDisabled_Bad(t *testing.T) {
 		t.Fatalf("expected reload to stop and clear the watcher when watch is disabled")
 	}
 	select {
-	case <-watcher.done:
+	case <-watcher.stopCh:
 	default:
 		t.Fatalf("expected existing watcher to be stopped")
 	}

state_impl.go

@@ -1829,7 +1829,7 @@ func (s *Server) listen() Result {
 
 // IsActive reports whether the limiter has enabled rate limiting.
 func (rl *RateLimiter) IsActive() bool {
-	return rl != nil && rl.config.MaxConnectionsPerMinute > 0
+	return rl != nil && rl.limit.MaxConnectionsPerMinute > 0
 }
 
 func nextMinerID() int64 { return atomic.AddInt64(&minerSeq, 1) }