res_levis_backend/build/init-scripts/create_topic.sh

#!/bin/bash
set -euo pipefail

# Retention: messages older than 2 days are deleted (172800000 ms = 2 days)
RETENTION_MS=172800000

KAFKA_BOOTSTRAP_SERVER="kafka:29092"

wait_for_topic() {
  local topic="$1"
  # Topic metadata can take a moment to become available after creation.
  for i in $(seq 1 30); do
    if /opt/kafka/bin/kafka-topics.sh \
      --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
      --topic "$topic" \
      --describe >/dev/null 2>&1; then
      return 0
    fi
    sleep 1
  done
  echo "timed out waiting for topic '$topic' to be available" >&2
  return 1
}

# create topic rawbeacons
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic rawbeacons \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic apibeacons
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic apibeacons \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic alertBeacons
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic alertbeacons \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic locevents
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic locevents \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic settings
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic settings \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic alert
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic alert \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic healthlocation
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic healthlocation \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic healthdecoder
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic healthdecoder \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic healthbridge
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic healthbridge \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic parser (server writes parser config, decoder reads it)
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic parser \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

# create topic mqtt (bridge reads/writes MQTT event payloads)
/opt/kafka/bin/kafka-topics.sh --bootstrap-server "$KAFKA_BOOTSTRAP_SERVER" \
--create --if-not-exists --topic mqtt \
--partitions 1 --replication-factor 1 --config retention.ms=$RETENTION_MS

wait_for_topic rawbeacons
wait_for_topic apibeacons
wait_for_topic alertbeacons
wait_for_topic locevents
wait_for_topic settings
wait_for_topic alert
wait_for_topic healthlocation
wait_for_topic healthdecoder
wait_for_topic healthbridge
wait_for_topic parser
wait_for_topic mqtt