kubectl apply -f <spec.yaml> equivalent in fabric8 java api - kubernetes

Question

I was trying to use io.fabric8 api to create a few resources in kubernetes using a pod-spec.yaml.
Config config = new ConfigBuilder()
.withNamespace("ag")
.withMasterUrl(K8_URL)
.build();
try (final KubernetesClient client = new DefaultKubernetesClient(config)) {
LOGGER.info("Master: " + client.getMasterUrl());
LOGGER.info("Loading File : " + args[0]);
Pod pod = client.pods().load(new FileInputStream(args[0])).get();
LOGGER.info("Pod created with name : " + pod.toString());
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
The above code works if the resource type is of POD. Similarly for other resource type it is working fine.
But if the yaml has multiple resource type like POD and service in the same file, how to use fabric8 Api ?
I was trying to use client.load(new FileInputStream(args[0])).createOrReplace(); but it is crashing with the below exception:
java.lang.NullPointerException
at java.net.URI$Parser.parse(URI.java:3042)
at java.net.URI.<init>(URI.java:588)
at io.fabric8.kubernetes.client.utils.URLUtils.join(URLUtils.java:48)
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:208)
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:177)
at io.fabric8.kubernetes.client.handlers.PodHandler.reload(PodHandler.java:53)
at io.fabric8.kubernetes.client.handlers.PodHandler.reload(PodHandler.java:32)
at io.fabric8.kubernetes.client.dsl.internal.NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.createOrReplace(NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java:202)
at io.fabric8.kubernetes.client.dsl.internal.NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.createOrReplace(NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java:62)
at com.nokia.k8s.InterpreterLanuch.main(InterpreterLanuch.java:66)
Yaml file used
apiVersion: v1
kind: Pod
metadata:
generateName: zep-ag-pod
annotations:
kubernetes.io/psp: restricted
spark-app-name: Zeppelin-spark-shared-process
namespace: ag
labels:
app: zeppelin
int-app-selector: shell-123
spec:
containers:
- name: ag-csf-zep
image: bcmt-registry:5000/zep-spark2.2:9
imagePullPolicy: IfNotPresent
command: ["/bin/bash"]
args: ["-c","echo Hi && sleep 60 && echo Done"]
securityContext:
allowPrivilegeEscalation: false
capabilities:
drop:
- ALL
runAsNonRoot: true
securityContext:
fsGroup: 2000
runAsUser: 1510
serviceAccount: csfzeppelin
serviceAccountName: csfzeppelin
---
apiVersion: v1
kind: Service
metadata:
name: zeppelin-service
namespace: ag
labels:
app: zeppelin
spec:
type: NodePort
ports:
- name: zeppelin-service
port: 30099
protocol: TCP
targetPort: 8080
selector:
app: zeppelin

Answer 1

You don't need to specify resource type whenever loading a file with multiple documents. You simply need to do:
// Load Yaml into Kubernetes resources
List<HasMetadata> result = client.load(new FileInputStream(args[0])).get();
// Apply Kubernetes Resources
client.resourceList(result).inNamespace(namespace).createOrReplace()