Springboot actuator health component check puts whole service as down? - spring-boot

Question

we have multiple health checks for our application, but if one of the components health check fails - then the status of the whole application changes to "DOWN".
What we want is the application status to still be "UP", even if a single component fails.
How to prevent a single failing component check to change the application status?
Here is an example of our health checks:
{
"status": "UP",
"components": {
"db": {
"status": "UP",
"details": { "database": "MariaDB", "validationQuery": "isValid()" }
},
"discoveryComposite": {
"description": "Discovery Client not initialized",
"status": "UNKNOWN",
"components": {
"discoveryClient": {
"description": "Discovery Client not initialized",
"status": "UNKNOWN"
}
}
},
"diskSpace": {
"status": "UP",
"details": {
"total": 117404147712,
"free": 102471593984,
"threshold": 10485760,
"exists": true
}
},
"linkFlow": {
"status": "UP",
"details": { "message": "LinkFLow er tilgjengelig" }
},
"nissy": {
"status": "UP",
"details": { "message": "Nissy er tilgjengelig" }
},
"ping": { "status": "UP" },
"reactiveDiscoveryClients": {
"description": "Discovery Client not initialized",
"status": "UNKNOWN",
"components": {
"Simple Reactive Discovery Client": {
"description": "Discovery Client not initialized",
"status": "UNKNOWN"
}
}
},
"refreshScope": { "status": "UP" },
"zisson": {
"status": "UP",
"details": { "message": "Zisson API er tilgjengelig" }
}
}
}
Implementation of healthcheck:
#Component
#Slf4j
public class ZissonHealthIndicator implements HealthIndicator {
private final ZissonAPIGateway zissonAPIGateway;
public ZissonHealthIndicator(ZissonAPIGateway zissonAPIGateway) {
this.zissonAPIGateway = zissonAPIGateway;
}
#Override
public Health health() {
if (zissonAPIGateway.isAvailable()) {
return Health.up().withDetail("message", "Zisson API er tilgjengelig").build();
}
log.warn("Helsesjekk: Zisson er utilgjengelig");
return Health.down().withDetail("message", "Zisson er ikke tilgjengelig").build();
}
}

Answer 1

Yes you can. Just create your own StatusAggregator:
#Component
public class CustomHealthAggregator extends SimpleStatusAggregator {
#Override
public Status getAggregateStatus(Set<Status> statuses) {
// or some othe logic here
if (statuses.contains(Status.UP)) {
return Status.UP;
}
return super.getAggregateStatus(statuses);
}
}