Labels { public static Labels fromResource(HasMetadata resource) { return resource.getMetadata().getLabels() != null ? additionalLabels(resource.getMetadata().getLabels()) : EMPTY; } private  Labels(Map<String, String> labels); static String cluster(HasMetadata resource); static String name(HasMetadata resource); Labels withAdditionalLabels(Map<String, String> additionalLabels); static Labels fromResource(HasMetadata resource); static Labels fromMap(Map<String, String> labels); static Labels fromString(String stringLabels); Labels withStrimziKind(String kind); Labels withStrimziCluster(String cluster); Labels withKubernetesName(String name); Labels withKubernetesInstance(String instanceName); Labels withKubernetesPartOf(String instanceName); Labels withKubernetesManagedBy(String operatorName); Labels withStrimziName(String name); Labels withStrimziDiscovery(); Labels withStatefulSetPod(String name); Map<String, String> toMap(); String toSelectorString(); static Labels forStrimziCluster(String cluster); static Labels forStrimziKind(String kind); Labels strimziSelectorLabels(); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString(); static Labels generateDefaultLabels(HasMetadata resource, String applicationName, String managedBy); static final String STRIMZI_DOMAIN; static final String KUBERNETES_DOMAIN; static final String STRIMZI_KIND_LABEL; static final String STRIMZI_CLUSTER_LABEL; static final String STRIMZI_NAME_LABEL; static final String STRIMZI_DISCOVERY_LABEL; static final String KUBERNETES_NAME_LABEL; static final String KUBERNETES_INSTANCE_LABEL; static final String KUBERNETES_PART_OF_LABEL; static final String APPLICATION_NAME; static final String KUBERNETES_MANAGED_BY_LABEL; static final String KUBERNETES_STATEFULSET_POD_LABEL; static final Labels EMPTY; }
@Test public void testFromResourceWithoutLabels() { Kafka kafka = new KafkaBuilder() .withNewMetadata() .withName("my-kafka") .endMetadata() .withNewSpec() .withNewZookeeper() .withReplicas(3) .withNewEphemeralStorage() .endEphemeralStorage() .endZookeeper() .withNewKafka() .withReplicas(3) .withNewEphemeralStorage() .endEphemeralStorage() .endKafka() .endSpec() .build(); Labels l = Labels.fromResource(kafka); assertThat(l, is(Labels.EMPTY)); }