VSN-1990/ Add Kafka producer for circuit activation

Add Kafka producer for circuit activation

🎯 Purpose

This MR introduces a new Kafka producer responsible for sending circuit activation/deactivation events (CircuitStatusEvent) to a dedicated Kafka topic. This allows other services in the ecosystem to react in real time when a circuit becomes active or inactive (e.g., recalculation workflows, synchronization, monitoring, etc.).

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🛠 Main Changes

1. Kafka Configuration

A new producer configuration has been added for CircuitStatusEvent:

• Added ProducerFactory<String, CircuitStatusEvent>

• Added KafkaTemplate<String, CircuitStatusEvent> using the qualifier circuitActivationKafkaTemplate

• Added topic configuration in application.yml:

  circuit-activation: circuit-activation

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2. TripPlanningProducerService Enhancements

• Injected the new Kafka template using @Qualifier("circuitActivationKafkaTemplate")

• Added the new method:

  sendCircuitStatusEvent(String circuitId, boolean active)

This method:

• Builds the CircuitStatusEvent object
• Sets the circuit ID and activation status
• Sends the event through the Kafka template
• Logs success or failure of the message delivery

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📡 New Functionality

The application can now emit circuit activation events to Kafka whenever a circuit is activated or deactivated. This enables:

• Automatic synchronization with downstream consumers
• Real-time updates across microservices
• Improved system monitoring
• Better traceability of circuit status changes

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✔️ Outcome

This MR cleanly introduces a new Kafka event stream dedicated to circuit activation. The implementation aligns with existing Kafka producers (trip planning, driver assignment, trip deletion, recalculation), ensuring consistency across the codebase.