58 lines
1.1 KiB
Go
58 lines
1.1 KiB
Go
package nats
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import (
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"caatsm/internal/adapter"
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"caatsm/internal/infra/config"
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"encoding/json"
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"fmt"
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"go.uber.org/zap"
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"github.com/nats-io/nats.go"
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)
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// Publisher publishes messages to NATS JetStream
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type Publisher struct {
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js nats.JetStreamContext
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cfg *config.Config
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logger *zap.Logger
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}
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// ProvidePublisher creates a NATS publisher
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func ProvidePublisher(
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js nats.JetStreamContext,
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cfg *config.Config,
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logger *zap.Logger,
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) (adapter.Publisher, error) {
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return &Publisher{
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js: js,
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cfg: cfg,
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logger: logger,
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}, nil
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}
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// Publish publishes a message
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func (p *Publisher) Publish(message interface{}) error {
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topic := p.cfg.Publisher.Topic
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if topic == "" {
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return fmt.Errorf("publisher topic is not configured")
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}
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// Marshal message to JSON
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messageBytes, err := json.Marshal(message)
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if err != nil {
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return fmt.Errorf("failed to marshal message: %w", err)
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}
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// Publish to JetStream
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_, err = p.js.Publish(topic, messageBytes)
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if err != nil {
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return fmt.Errorf("failed to publish message: %w", err)
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}
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p.logger.Debug("Published message",
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zap.String("topic", topic),
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zap.Int("size", len(messageBytes)),
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)
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return nil
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}
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