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Switch to DeferredConfirmations and implement Batch Publishing jxsl13#36
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| package pool | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/rabbitmq/amqp091-go" | ||
| ) | ||
|
|
||
| // Confirmation is a deferred confirmation of a single publish. | ||
| // We use DeferredConfirmation instead of Transactions due to the performance implications of transactions. | ||
| // See: https://www.rabbitmq.com/docs/confirms#publisher-confirms | ||
| type Confirmation struct { | ||
| dc *amqp091.DeferredConfirmation | ||
| s *Session | ||
| } | ||
|
|
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| // BatchConfirmation is a deferred confirmation of a batch of publishes. | ||
| // We use DeferredConfirmation instead of Transactions due to the performance implications of transactions. | ||
| // See: https://www.rabbitmq.com/docs/confirms#publisher-confirms | ||
| type BatchConfirmation struct { | ||
| dc []*amqp091.DeferredConfirmation | ||
| s *Session | ||
| } | ||
|
|
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| func (c *Confirmation) Session() *Session { | ||
| return c.s | ||
| } | ||
|
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| func (c *Confirmation) DeferredConfirmation() *amqp091.DeferredConfirmation { | ||
| return c.dc | ||
| } | ||
|
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| func (bc *BatchConfirmation) Session() *Session { | ||
| return bc.s | ||
| } | ||
|
|
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| func (bc *BatchConfirmation) DeferredConfirmations() []*amqp091.DeferredConfirmation { | ||
| return bc.dc | ||
| } | ||
|
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| // Wait blocks until the server confirms the publish, the channel/connection is closed, the context is cancelled, or an error occurs. | ||
| func (c *Confirmation) Wait(ctx context.Context) error { | ||
| select { | ||
| case <-c.dc.Done(): | ||
| err := c.s.error() | ||
| if err != nil { | ||
| return fmt.Errorf("await confirm failed: confirms channel closed: %w", err) | ||
| } | ||
| if !c.dc.Acked() { | ||
| return fmt.Errorf("await confirm failed: %w", ErrNack) | ||
| } | ||
| return nil | ||
| case returned, ok := <-c.s.returned: | ||
| if !ok { | ||
| err := c.s.error() | ||
| if err != nil { | ||
| return fmt.Errorf("await confirm failed: returned channel closed: %w", err) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w", errReturnedClosed) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w: %s", ErrReturned, returned.ReplyText) | ||
| case blocking, ok := <-c.s.conn.BlockingFlowControl(): | ||
| if !ok { | ||
| err := c.s.error() | ||
| if err != nil { | ||
| return fmt.Errorf("await confirm failed: blocking channel closed: %w", err) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w", errBlockingFlowControlClosed) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w: %s", ErrBlockingFlowControl, blocking.Reason) | ||
| case <-ctx.Done(): | ||
| return fmt.Errorf("await confirm: failed context %w: %w", ErrClosed, ctx.Err()) | ||
| case <-c.s.ctx.Done(): | ||
| return fmt.Errorf("await confirm failed: session %w: %w", ErrClosed, c.s.ctx.Err()) | ||
| } | ||
| } | ||
|
|
||
| // Wait blocks until the server confirms all publishes, the channel/connection is closed, the context is cancelled, or an error occurs. | ||
| func (bc *BatchConfirmation) Wait(ctx context.Context) error { | ||
| for { | ||
| select { | ||
| case returned, ok := <-bc.s.returned: | ||
| if !ok { | ||
| err := bc.s.error() | ||
| if err != nil { | ||
| return fmt.Errorf("await confirm failed: returned channel closed: %w", err) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w", errReturnedClosed) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w: %s", ErrReturned, returned.ReplyText) | ||
| case blocking, ok := <-bc.s.conn.BlockingFlowControl(): | ||
| if !ok { | ||
| err := bc.s.error() | ||
| if err != nil { | ||
| return fmt.Errorf("await confirm failed: blocking channel closed: %w", err) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w", errBlockingFlowControlClosed) | ||
| } | ||
| return fmt.Errorf("await confirm failed: %w: %s", ErrBlockingFlowControl, blocking.Reason) | ||
| case <-ctx.Done(): | ||
| return fmt.Errorf("await confirm: failed context %w: %w", ErrClosed, ctx.Err()) | ||
| case <-bc.s.ctx.Done(): | ||
| return fmt.Errorf("await confirm failed: session %w: %w", ErrClosed, bc.s.ctx.Err()) | ||
| default: | ||
| err := bc.s.error() | ||
| if err != nil { | ||
| return fmt.Errorf("await confirm failed: confirms channel closed: %w", err) | ||
| } | ||
|
|
||
| for _, dc := range bc.dc { | ||
| if !dc.Acked() { | ||
| continue // not all acked yet, keep waiting | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
| } |
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