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74 lines
2.3 KiB
Bash
74 lines
2.3 KiB
Bash
#!/bin/bash
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set -x
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# Configuration
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SERVICE_NAME="navidrome"
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REPLICA_SERVICE_NAME="replica-navidrome"
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PORT=4533
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CONSUL_HTTP_ADDR="${CONSUL_URL:-http://localhost:8500}"
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NODE_IP="${ADVERTISE_IP}"
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CHECK_INTERVAL="10s"
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# Tags for the Primary service (Traefik enabled)
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PRIMARY_TAGS='["navidrome","web","traefik.enable=true","urlprefix-/navidrome","tools","traefik.http.routers.navidromelan.rule=Host(`navidrome.service.dc1.consul`)","traefik.http.routers.navidromewan.rule=Host(`m.fbleagh.duckdns.org`)","traefik.http.routers.navidromewan.middlewares=dex@consulcatalog","traefik.http.routers.navidromewan.tls=true"]'
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# Tags for the Replica service
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REPLICA_TAGS='["navidrome-replica"]'
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register_service() {
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local name=$1
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local tags=$2
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local id="navidrome-${NODE_IP}-${name}"
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echo "Registering as ${name} with ID ${id} at ${NODE_IP}:${PORT}..."
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curl -v -X PUT -d "{
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\"ID\": \"${id}\",
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\"Name\": \"${name}\",
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\"Tags\": ${tags},
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\"Address\": \"${NODE_IP}\",
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\"Port\": ${PORT},
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\"Check\": {
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\"HTTP\": \"http://${NODE_IP}:${PORT}/app\",
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\"Interval\": \"${CHECK_INTERVAL}\",
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\"Timeout\": \"2s\"
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}
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}" "${CONSUL_HTTP_ADDR}/v1/agent/service/register"
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}
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deregister_service() {
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local name=$1
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local id="navidrome-${NODE_IP}-${name}"
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echo "Deregistering ${name} with ID ${id}..."
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curl -v -X PUT "${CONSUL_HTTP_ADDR}/v1/agent/service/deregister/${id}"
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}
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echo "Starting Consul registration loop..."
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LAST_STATE="unknown"
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while true; do
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# In LiteFS 0.5, .primary file exists ONLY on replicas.
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# We check /data/.primary because /data is our mount point.
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if [ ! -f /data/.primary ]; then
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CURRENT_STATE="primary"
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else
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CURRENT_STATE="replica"
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fi
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echo "Current node state: ${CURRENT_STATE}"
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if [ "$CURRENT_STATE" != "$LAST_STATE" ]; then
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echo "State change detected: ${LAST_STATE} -> ${CURRENT_STATE}"
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if [ "$CURRENT_STATE" == "primary" ]; then
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deregister_service "$REPLICA_SERVICE_NAME"
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register_service "$SERVICE_NAME" "$PRIMARY_TAGS"
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else
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deregister_service "$SERVICE_NAME"
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register_service "$REPLICA_SERVICE_NAME" "$REPLICA_TAGS"
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fi
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LAST_STATE="$CURRENT_STATE"
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fi
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sleep 15
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done
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