processing_handler.go -> handlers/processing

semaphores/config.go

@@ -0,0 +1,43 @@
+package semaphores
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/imgproxy/imgproxy/v3/config"
+)
+
+// Config represents handler config
+type Config struct {
+	RequestsQueueSize int // Request queue size
+	Workers           int // Number of workers
+}
+
+// NewDefaultConfig creates a new configuration with defaults
+func NewDefaultConfig() *Config {
+	return &Config{
+		RequestsQueueSize: 0,
+		Workers:           runtime.GOMAXPROCS(0) * 2,
+	}
+}
+
+// LoadFromEnv loads config from environment variables
+func LoadFromEnv(c *Config) (*Config, error) {
+	c.RequestsQueueSize = config.RequestsQueueSize
+	c.Workers = config.Workers
+
+	return c, nil
+}
+
+// Validate checks configuration values
+func (c *Config) Validate() error {
+	if c.RequestsQueueSize < 0 {
+		return fmt.Errorf("requests queue size should be greater than or equal 0, now - %d", c.RequestsQueueSize)
+	}
+
+	if c.Workers <= 0 {
+		return fmt.Errorf("workers number should be greater than 0, now - %d", c.Workers)
+	}
+
+	return nil
+}