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update_job.go
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update_job.go
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package resources
import (
"context"
mattermostApp "github.com/mattermost/mattermost-operator/pkg/mattermost"
"github.com/pkg/errors"
appsv1 "k8s.io/api/apps/v1"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
k8sErrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
k8sClient "sigs.k8s.io/controller-runtime/pkg/client"
)
const UpdateJobName = "mattermost-update-check"
func (r *ResourceHelper) LaunchMattermostUpdateJob(
jobNamespace string,
baseDeployment *appsv1.Deployment,
) error {
job := PrepareMattermostJobTemplate(UpdateJobName, jobNamespace, baseDeployment)
err := r.client.Create(context.TODO(), job)
if err != nil && !k8sErrors.IsAlreadyExists(err) {
return err
}
return nil
}
// RestartMattermostUpdateJob removes existing update job if it exists and creates new one.
func (r *ResourceHelper) RestartMattermostUpdateJob(
currentJob *batchv1.Job,
deployment *appsv1.Deployment,
) error {
err := r.client.Delete(context.TODO(), currentJob, k8sClient.PropagationPolicy(metav1.DeletePropagationBackground))
if err != nil && !k8sErrors.IsNotFound(err) {
return errors.Wrapf(err, "failed to delete outdated update job")
}
job := PrepareMattermostJobTemplate(UpdateJobName, currentJob.Namespace, deployment)
err = r.client.Create(context.TODO(), job)
if err != nil {
return err
}
return nil
}
// FetchMattermostUpdateJob gets update job
func (r *ResourceHelper) FetchMattermostUpdateJob(namespace string) (*batchv1.Job, error) {
job := &batchv1.Job{}
err := r.client.Get(
context.TODO(),
types.NamespacedName{
Name: UpdateJobName,
Namespace: namespace,
},
job,
)
return job, err
}
func PrepareMattermostJobTemplate(name, namespace string, baseDeployment *appsv1.Deployment) *batchv1.Job {
backoffLimit := int32(10)
job := &batchv1.Job{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
Spec: batchv1.JobSpec{
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{"app": name},
},
Spec: *baseDeployment.Spec.Template.Spec.DeepCopy(),
},
BackoffLimit: &backoffLimit,
},
}
// Remove init container that waits for db setup job.
job.Spec.Template.Spec.InitContainers = mattermostApp.RemoveContainer(
mattermostApp.WaitForDBSetupContainerName,
job.Spec.Template.Spec.InitContainers,
)
// We dont need to validate the readiness/liveness for this short lived job.
for i := range job.Spec.Template.Spec.Containers {
job.Spec.Template.Spec.Containers[i].LivenessProbe = nil
job.Spec.Template.Spec.Containers[i].ReadinessProbe = nil
}
// Override values for job-specific behavior.
job.Spec.Template.Spec.RestartPolicy = corev1.RestartPolicyNever
for i := range job.Spec.Template.Spec.Containers {
job.Spec.Template.Spec.Containers[i].Command = []string{"mattermost", "version"}
}
return job
}