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matcher implementation #6

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merged 4 commits into from
Sep 21, 2023
Merged

matcher implementation #6

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matcher implementation to determine actual state of each resource mad…
itroyano Aug 20, 2023
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matcher implementation to determine actual state of each resource mad…
itroyano Aug 20, 2023
681fd88
matcher implementation to determine actual state of each resource mad…
itroyano Aug 20, 2023
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matcher implementation to determine actual state of each resource mad…
itroyano Aug 20, 2023
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42 changes: 36 additions & 6 deletions src/main/java/io/opdev/ExampleValuesReconciler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,9 +19,12 @@
import io.fabric8.kubernetes.api.model.ObjectMeta;
import io.fabric8.kubernetes.api.model.OwnerReference;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.dsl.base.ResourceDefinitionContext;
import io.javaoperatorsdk.operator.api.reconciler.Context;
import io.javaoperatorsdk.operator.api.reconciler.Reconciler;
import io.javaoperatorsdk.operator.api.reconciler.UpdateControl;
import io.javaoperatorsdk.operator.processing.dependent.Matcher.Result;
import io.javaoperatorsdk.operator.processing.dependent.kubernetes.GenericKubernetesResourceMatcher;
import org.yaml.snakeyaml.Yaml;


Expand Down Expand Up @@ -90,17 +93,44 @@ private void createFromYaml(String pathToYaml, ExampleValues resource) throws Fi
log.info("Applying yaml " + pathToYaml + " to the namespace " + resource.getMetadata().getNamespace());
// Parse a yaml into a list of Kubernetes resources
List<HasMetadata> result = client.load(new FileInputStream(pathToYaml)).get();
for (HasMetadata object : result){
ObjectMeta meta = object.getMetadata();
for (HasMetadata desiredObject : result){
ObjectMeta meta = desiredObject.getMetadata();
// Patch all objects with owner references
meta.setOwnerReferences(buildOwnerReference(resource));
object.setMetadata(meta);
// Apply Kubernetes Resources
log.info("Creating resource kind: " + object.getKind() + " with name: " + meta.getName() );
client.resource(object).createOrReplace();
desiredObject.setMetadata(meta);
if (needToUpdateState(desiredObject, resource.getMetadata().getNamespace())){
log.info("Creating or updating resource kind: " + desiredObject.getKind() + " with name: " + meta.getName() );
client.resource(desiredObject).createOrReplace();
}
}
}

private boolean needToUpdateState(HasMetadata desiredObject, String namespace){
ResourceDefinitionContext metaContext = new ResourceDefinitionContext.Builder()
.withKind(desiredObject.getKind())
.withNamespaced(true)
.build();

// Get the existing actual kubernetes resource
HasMetadata actualObject = client.genericKubernetesResources(metaContext)
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.inNamespace(namespace)
.withName(desiredObject.getMetadata().getName())
.get();

if (actualObject == null){
// Initial creation is needed
return true;
}

// Perform diff
Result<HasMetadata> matcherResult = GenericKubernetesResourceMatcher.match(desiredObject, actualObject, false);
//.match(desiredObject, actualObject, true, true);
//.match(actualObject, desiredObject, metaContext);

// return true if not matched, to indicate a need to update actual state
return !matcherResult.matched();
}

private List<OwnerReference> buildOwnerReference(ExampleValues resource) {
List<OwnerReference> refs = new ArrayList<>();
refs.add(new OwnerReference(
Expand Down