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Support generation of Job/CronJob resources
Fix #27024
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119 changes: 119 additions & 0 deletions
119
...eployment/src/main/java/io/quarkus/kubernetes/deployment/AddCronJobResourceDecorator.java
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package io.quarkus.kubernetes.deployment; | ||
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import static io.quarkus.kubernetes.deployment.Constants.CRONJOB; | ||
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import java.util.HashMap; | ||
import java.util.List; | ||
import java.util.function.Function; | ||
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import io.dekorate.kubernetes.decorator.ResourceProvidingDecorator; | ||
import io.fabric8.kubernetes.api.model.Container; | ||
import io.fabric8.kubernetes.api.model.HasMetadata; | ||
import io.fabric8.kubernetes.api.model.KubernetesListFluent; | ||
import io.fabric8.kubernetes.api.model.batch.v1.CronJob; | ||
import io.fabric8.kubernetes.api.model.batch.v1.CronJobBuilder; | ||
import io.fabric8.kubernetes.api.model.batch.v1.CronJobFluent; | ||
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public class AddCronJobResourceDecorator extends ResourceProvidingDecorator<KubernetesListFluent<?>> { | ||
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private final String name; | ||
private final CronJobConfig config; | ||
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public AddCronJobResourceDecorator(String name, CronJobConfig config) { | ||
this.name = name; | ||
this.config = config; | ||
if (!config.schedule.isPresent()) { | ||
throw new IllegalArgumentException( | ||
"When generating a CronJob resource, you need to specify a schedule CRON expression."); | ||
} | ||
} | ||
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@SuppressWarnings("deprecation") | ||
@Override | ||
public void visit(KubernetesListFluent<?> list) { | ||
CronJobBuilder builder = list.getItems().stream() | ||
.filter(this::containsCronJobResource) | ||
.map(replaceExistingCronJobResource(list)) | ||
.findAny() | ||
.orElseGet(this::createCronJobResource) | ||
.accept(CronJobBuilder.class, this::initCronJobResourceWithDefaults); | ||
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list.addToItems(builder.build()); | ||
} | ||
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private boolean containsCronJobResource(HasMetadata metadata) { | ||
return CRONJOB.equalsIgnoreCase(metadata.getKind()) && name.equals(metadata.getMetadata().getName()); | ||
} | ||
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private void initCronJobResourceWithDefaults(CronJobBuilder builder) { | ||
CronJobFluent.SpecNested<CronJobBuilder> spec = builder.editOrNewSpec(); | ||
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var jobTemplateSpec = spec | ||
.editOrNewJobTemplate() | ||
.editOrNewSpec(); | ||
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jobTemplateSpec.editOrNewSelector() | ||
.endSelector() | ||
.editOrNewTemplate() | ||
.editOrNewSpec() | ||
.endSpec() | ||
.endTemplate(); | ||
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// defaults for: | ||
// - match labels | ||
if (jobTemplateSpec.getSelector().getMatchLabels() == null) { | ||
jobTemplateSpec.editSelector().withMatchLabels(new HashMap<>()).endSelector(); | ||
} | ||
// - termination grace period seconds | ||
if (jobTemplateSpec.getTemplate().getSpec().getTerminationGracePeriodSeconds() == null) { | ||
jobTemplateSpec.editTemplate().editSpec().withTerminationGracePeriodSeconds(10L).endSpec().endTemplate(); | ||
} | ||
// - container | ||
if (!containsContainerWithName(spec)) { | ||
jobTemplateSpec.editTemplate().editSpec().addNewContainer().withName(name).endContainer().endSpec().endTemplate(); | ||
} | ||
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spec.withSuspend(config.suspend); | ||
spec.withSchedule(config.schedule.get()); | ||
spec.withConcurrencyPolicy(config.concurrencyPolicy.name()); | ||
config.successfulJobsHistoryLimit.ifPresent(spec::withSuccessfulJobsHistoryLimit); | ||
config.failedJobsHistoryLimit.ifPresent(spec::withFailedJobsHistoryLimit); | ||
config.startingDeadlineSeconds.ifPresent(spec::withStartingDeadlineSeconds); | ||
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jobTemplateSpec.withCompletionMode(config.completionMode.name()); | ||
jobTemplateSpec.editTemplate().editSpec().withRestartPolicy(config.restartPolicy.name()).endSpec().endTemplate(); | ||
config.parallelism.ifPresent(jobTemplateSpec::withParallelism); | ||
config.completions.ifPresent(jobTemplateSpec::withCompletions); | ||
config.backoffLimit.ifPresent(jobTemplateSpec::withBackoffLimit); | ||
config.activeDeadlineSeconds.ifPresent(jobTemplateSpec::withActiveDeadlineSeconds); | ||
config.ttlSecondsAfterFinished.ifPresent(jobTemplateSpec::withTtlSecondsAfterFinished); | ||
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jobTemplateSpec.endSpec().endJobTemplate(); | ||
spec.endSpec(); | ||
} | ||
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private CronJobBuilder createCronJobResource() { | ||
return new CronJobBuilder().withNewMetadata().withName(name).endMetadata(); | ||
} | ||
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private Function<HasMetadata, CronJobBuilder> replaceExistingCronJobResource(KubernetesListFluent<?> list) { | ||
return metadata -> { | ||
list.removeFromItems(metadata); | ||
return new CronJobBuilder((CronJob) metadata); | ||
}; | ||
} | ||
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private boolean containsContainerWithName(CronJobFluent.SpecNested<CronJobBuilder> spec) { | ||
var jobTemplate = spec.getJobTemplate(); | ||
if (jobTemplate == null | ||
|| jobTemplate.getSpec() == null | ||
|| jobTemplate.getSpec().getTemplate() == null | ||
|| jobTemplate.getSpec().getTemplate().getSpec() == null) { | ||
return false; | ||
} | ||
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List<Container> containers = jobTemplate.getSpec().getTemplate().getSpec().getContainers(); | ||
return containers == null || containers.stream().anyMatch(c -> name.equals(c.getName())); | ||
} | ||
} |
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