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45 changes: 45 additions & 0 deletions
45
...ork-core/src/main/java/io/javaoperatorsdk/operator/api/reconciler/IndexDiscriminator.java
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package io.javaoperatorsdk.operator.api.reconciler; | ||
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import java.util.Optional; | ||
import java.util.function.Function; | ||
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import io.fabric8.kubernetes.api.model.HasMetadata; | ||
import io.javaoperatorsdk.operator.processing.event.source.informer.InformerEventSource; | ||
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public class IndexDiscriminator<R extends HasMetadata, P extends HasMetadata> | ||
implements ResourceDiscriminator<R, P> { | ||
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private final String indexName; | ||
private final String eventSourceName; | ||
private final Function<P, String> keyMapper; | ||
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public IndexDiscriminator(String indexName, Function<P, String> keyMapper) { | ||
this(indexName, null, keyMapper); | ||
} | ||
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public IndexDiscriminator(String indexName, String eventSourceName, | ||
Function<P, String> keyMapper) { | ||
this.indexName = indexName; | ||
this.eventSourceName = eventSourceName; | ||
this.keyMapper = keyMapper; | ||
} | ||
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@Override | ||
public Optional<R> distinguish(Class<R> resource, | ||
P primary, | ||
Context<P> context) { | ||
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InformerEventSource<R, P> eventSource = | ||
(InformerEventSource<R, P>) context | ||
.eventSourceRetriever() | ||
.getResourceEventSourceFor(resource, eventSourceName); | ||
var resources = eventSource.byIndex(indexName, keyMapper.apply(primary)); | ||
if (resources.isEmpty()) { | ||
return Optional.empty(); | ||
} else if (resources.size() > 1) { | ||
throw new IllegalStateException("More than one resource found"); | ||
} else { | ||
return Optional.of(resources.get(0)); | ||
} | ||
} | ||
} |
41 changes: 0 additions & 41 deletions
41
...c/test/java/io/javaoperatorsdk/operator/sample/indexdiscriminator/IndexDiscriminator.java
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...st/java/io/javaoperatorsdk/operator/sample/indexdiscriminator/TestIndexDiscriminator.java
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package io.javaoperatorsdk.operator.sample.indexdiscriminator; | ||
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import io.fabric8.kubernetes.api.model.ConfigMap; | ||
import io.javaoperatorsdk.operator.api.reconciler.IndexDiscriminator; | ||
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import static io.javaoperatorsdk.operator.sample.indexdiscriminator.IndexDiscriminatorTestReconciler.configMapKeyFromPrimary; | ||
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public class TestIndexDiscriminator | ||
extends IndexDiscriminator<ConfigMap, IndexDiscriminatorTestCustomResource> { | ||
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public TestIndexDiscriminator(String indexName, String nameSuffix) { | ||
super(indexName, p -> configMapKeyFromPrimary(p, nameSuffix)); | ||
} | ||
} |