4eadb91a64
- Added rate limiting for outbound email sends to prevent abuse, implemented in `internal/api/mail/sendguard`. - Introduced idempotency key support for email sending to avoid duplicate submissions. - Enhanced attachment handling with new limits and validation in `internal/api/mail/limits`. - Updated outbox processing to include retry logic and circuit breaker for SMTP failures. - Improved HTML sanitization for email content to enhance security. - Added unit tests for new features, ensuring robust functionality and error handling. - Updated configuration options in `.env.example` for new mail settings.
27 lines
620 B
Go
27 lines
620 B
Go
package smtp
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import "context"
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// GuardedSender wraps Sender with a per-account SMTP circuit breaker.
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type GuardedSender struct {
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inner *Sender
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circuit *CircuitBreaker
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}
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func NewGuardedSender(inner *Sender, circuit *CircuitBreaker) *GuardedSender {
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return &GuardedSender{inner: inner, circuit: circuit}
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}
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func (g *GuardedSender) Send(ctx context.Context, req *SendRequest) error {
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if err := g.circuit.Allow(req.AccountID); err != nil {
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return err
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}
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err := g.inner.Send(ctx, req)
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if err != nil {
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g.circuit.RecordFailure(req.AccountID)
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return err
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}
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g.circuit.RecordSuccess(req.AccountID)
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return nil
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}
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