[NIFI-8849] Provide a status API endpoint

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: NiFi Registry
• Assignee: Unassigned
• Reporter: Guillaume Lhermenier
• Created: 08/Mar/21 14:11
• Updated: 16/Jul/21 15:13

Description

As Nifi registry exposes an API, it should be really helpful to also expose a status/healthcheck endpoint.

 When deploying a nifi-registry in any cloud provider, I think almost nobody wants to parse something like

[root@nifireg bin]# ./nifi-registry.sh  status
nifi-registry.sh: JAVA_HOME not set; results may vary

Java home:
NiFi Registry home: /opt/nifi-registry-0.8.0

Bootstrap Config File: /opt/nifi-registry-0.8.0/conf/bootstrap.conf

2021-03-08 13:30:51,178 INFO [main] o.apache.nifi.registry.bootstrap.Command Apache NiFi Registry is currently running, listening to Bootstrap on port 35989, PID=635

 A simple

/status

endpoint returning whether the nifi registry is running fine or not should be sufficient.

Also, if it could be UNsecured (not sure we should have to handle certs to just know if the service is running or not.), it could be veeeeeery well.