removed key for lock

concurrency/handler.go

@@ -13,42 +13,42 @@ type ConcurrencyHandler struct {
 	sem                      chan struct{}
 	logger                   *zap.SugaredLogger
 	AcquisitionTimes         []time.Duration
-	lock                     sync.Mutex
 	lastTokenAcquisitionTime time.Time
 	Metrics                  *ConcurrencyMetrics
+	sync.Mutex
 }
 
 // ConcurrencyMetrics captures various metrics related to managing concurrency for the client's interactions with the API.
 type ConcurrencyMetrics struct {
-	TotalRequests        int64         // Total number of requests made
-	TotalRetries         int64         // Total number of retry attempts
-	TotalRateLimitErrors int64         // Total number of rate limit errors encountered
-	PermitWaitTime       time.Duration // Total time spent waiting for tokens
-	TTFB                 struct {      // Metrics related to Time to First Byte (TTFB)
-		Total time.Duration // Total Time to First Byte (TTFB) for all requests
-		Count int64         // Count of requests used for calculating TTFB
-		Lock  sync.Mutex    // Lock for TTFB metrics
+	TotalRequests        int64
+	TotalRetries         int64
+	TotalRateLimitErrors int64
+	PermitWaitTime       time.Duration
+	sync.Mutex
+	TTFB struct {
+		Total time.Duration
+		Count int64
+		sync.Mutex
 	}
-	Throughput struct { // Metrics related to network throughput
-		Total float64    // Total network throughput for all requests
-		Count int64      // Count of requests used for calculating throughput
-		Lock  sync.Mutex // Lock for throughput metrics/
+	Throughput struct {
+		Total float64
+		Count int64
+		sync.Mutex
 	}
-	ResponseTimeVariability struct { // Metrics related to response time variability
-		Total                  time.Duration // Total response time for all requests
-		Average                time.Duration // Average response time across all requests
-		Variance               float64       // Variance of response times
-		Count                  int64         // Count of responses used for calculating response time variability
-		Lock                   sync.Mutex    // Lock for response time variability metrics
-		StdDevThreshold        float64       // Maximum acceptable standard deviation for adjusting concurrency
-		DebounceScaleDownCount int           // Counter to manage scale down actions after consecutive triggers
-		DebounceScaleUpCount   int           // Counter to manage scale up actions after consecutive triggers
+	ResponseTimeVariability struct {
+		Total    time.Duration
+		Average  time.Duration
+		Variance float64
+		Count    int64
+		sync.Mutex
+		StdDevThreshold        float64
+		DebounceScaleDownCount int
+		DebounceScaleUpCount   int
 	}
 	ResponseCodeMetrics struct {
-		ErrorRate float64    // Error rate calculated as (TotalRateLimitErrors + 5xxErrors) / TotalRequests
-		Lock      sync.Mutex // Lock for response code metrics
+		ErrorRate float64
+		sync.Mutex
 	}
-	Lock sync.Mutex // Lock for overall metrics fields
 }
 
 // NewConcurrencyHandler initializes a new ConcurrencyHandler with the given

concurrency/metrics.go

@@ -156,8 +156,8 @@ func (ch *ConcurrencyHandler) MonitorRateLimitHeaders(resp *http.Response) int {
 func (ch *ConcurrencyHandler) MonitorServerResponseCodes(resp *http.Response) int {
 	statusCode := resp.StatusCode
 
-	ch.Metrics.Lock.Lock()
-	defer ch.Metrics.Lock.Unlock()
+	ch.Metrics.Lock()
+	defer ch.Metrics.Unlock()
 
 	if statusCode >= 200 && statusCode < 300 {
 		// Reset error counts for successful responses
@@ -212,8 +212,8 @@ var responseTimesLock sync.Mutex
 // - (1) to suggest an increase in concurrency,
 // - (0) to indicate no change needed.
 func (ch *ConcurrencyHandler) MonitorResponseTimeVariability(responseTime time.Duration) int {
-	ch.Metrics.ResponseTimeVariability.Lock.Lock()
-	defer ch.Metrics.ResponseTimeVariability.Lock.Unlock()
+	ch.Metrics.ResponseTimeVariability.Lock()
+	defer ch.Metrics.ResponseTimeVariability.Unlock()
 
 	responseTimesLock.Lock() // Ensure safe concurrent access
 	responseTimes = append(responseTimes, responseTime)

concurrency/scale.go

@@ -6,8 +6,8 @@ import "go.uber.org/zap"
 // ScaleDown reduces the concurrency level by one, down to the minimum limit.
 func (ch *ConcurrencyHandler) ScaleDown() {
 	// Lock to ensure thread safety
-	ch.lock.Lock()
-	defer ch.lock.Unlock()
+	ch.Lock()
+	defer ch.Unlock()
 
 	// We must consider the capacity rather than the length of the semaphore channel
 	currentSize := cap(ch.sem)
@@ -23,8 +23,8 @@ func (ch *ConcurrencyHandler) ScaleDown() {
 // ScaleUp increases the concurrency level by one, up to the maximum limit.
 func (ch *ConcurrencyHandler) ScaleUp() {
 	// Lock to ensure thread safety
-	ch.lock.Lock()
-	defer ch.lock.Unlock()
+	ch.Lock()
+	defer ch.Unlock()
 
 	currentSize := cap(ch.sem)
 	if currentSize < MaxConcurrency {

concurrency/semaphore.go

@@ -71,15 +71,15 @@ func (ch *ConcurrencyHandler) AcquireConcurrencyPermit(ctx context.Context) (con
 // This method locks the concurrency handler to safely update shared metrics and logs detailed
 // information about the permit acquisition for debugging and monitoring purposes.
 func (ch *ConcurrencyHandler) trackResourceAcquisition(duration time.Duration, requestID uuid.UUID) {
-	ch.lock.Lock()
-	defer ch.lock.Unlock()
+	ch.Lock()
+	defer ch.Unlock()
 
 	// Record the time taken to acquire the permit and update related metrics.
 	ch.AcquisitionTimes = append(ch.AcquisitionTimes, duration)
-	ch.Metrics.Lock.Lock()
+	ch.Metrics.Lock()
 	ch.Metrics.PermitWaitTime += duration
 	ch.Metrics.TotalRequests++ // Increment the count of total requests handled.
-	ch.Metrics.Lock.Unlock()
+	ch.Metrics.Unlock()
 
 	// Calculate and log the current state of permit utilization.
 	utilizedPermits := len(ch.sem)
@@ -115,13 +115,13 @@ func (ch *ConcurrencyHandler) ReleaseConcurrencyPermit(requestID uuid.UUID) {
 		return
 	}
 
-	ch.lock.Lock()
-	defer ch.lock.Unlock()
+	ch.Lock()
+	defer ch.Unlock()
 
 	// Update metrics related to permit release.
-	ch.Metrics.Lock.Lock()
+	ch.Metrics.Lock()
 	ch.Metrics.TotalRequests-- // Decrement the count of total requests handled, if applicable.
-	ch.Metrics.Lock.Unlock()
+	ch.Metrics.Unlock()
 
 	utilizedPermits := len(ch.sem)                    // Calculate tokens currently in use.
 	availablePermits := cap(ch.sem) - utilizedPermits // Calculate tokens that are available for use.