Organize backend into product executable and shared Go modules

backend/product/verification/config/verification_rate_limit.go

@@ -0,0 +1,39 @@
+package config
+
+import (
+	"time"
+
+	sharedlimit "git.sendico.io/tech/sxchnge/shared/ratelimit"
+)
+
+type VerificationRateLimitsConfig struct {
+	PerDestination sharedlimit.WindowConfig `yaml:"per_destination"`
+	PerIP          sharedlimit.WindowConfig `yaml:"per_ip"`
+}
+
+type VerificationRateLimits struct {
+	PerDestination sharedlimit.Window
+	PerIP          sharedlimit.Window
+}
+
+func DefaultVerificationRateLimits() VerificationRateLimits {
+	return VerificationRateLimits{
+		PerDestination: sharedlimit.Window{Limit: 5, Window: time.Hour},
+		PerIP:          sharedlimit.Window{Limit: 20, Window: time.Hour},
+	}
+}
+
+func (c *Config) ResolveRateLimits() (VerificationRateLimits, error) {
+	if c == nil || c.RateLimits == nil {
+		return DefaultVerificationRateLimits(), nil
+	}
+	destination, err := sharedlimit.ResolveWindow(c.RateLimits.PerDestination, "verification.rate_limits.per_destination")
+	if err != nil {
+		return VerificationRateLimits{}, err
+	}
+	ip, err := sharedlimit.ResolveWindow(c.RateLimits.PerIP, "verification.rate_limits.per_ip")
+	if err != nil {
+		return VerificationRateLimits{}, err
+	}
+	return VerificationRateLimits{PerDestination: destination, PerIP: ip}, nil
+}