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Validate that cronjob names are less than 52 characters

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This commit is contained in:
Julia Evans
2017-09-19 08:31:39 -07:00
parent 4e276d49b9
commit e30237b869
3 changed files with 25 additions and 0 deletions
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1
pkg/apis/batch/validation/BUILD
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@@ -20,6 +20,7 @@ go_library(
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1/validation:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/labels:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/validation:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/validation/field:go_default_library",
],
)

8
pkg/apis/batch/validation/validation.go
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@@ -22,6 +22,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
unversionedvalidation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
"k8s.io/apimachinery/pkg/labels"
apimachineryvalidation "k8s.io/apimachinery/pkg/util/validation"
"k8s.io/apimachinery/pkg/util/validation/field"
"k8s.io/kubernetes/pkg/api"
apivalidation "k8s.io/kubernetes/pkg/api/validation"
@@ -162,6 +163,13 @@ func ValidateCronJob(scheduledJob *batch.CronJob) field.ErrorList {
// CronJobs and rcs have the same name validation
allErrs := apivalidation.ValidateObjectMeta(&scheduledJob.ObjectMeta, true, apivalidation.ValidateReplicationControllerName, field.NewPath("metadata"))
allErrs = append(allErrs, ValidateCronJobSpec(&scheduledJob.Spec, field.NewPath("spec"))...)
if len(scheduledJob.ObjectMeta.Name) > apimachineryvalidation.DNS1035LabelMaxLength-11 {
// The cronjob controller appends a 11-character suffix to the cronjob (`-$TIMESTAMP`) when
// creating a job. The job name length limit is 63 characters.
// Therefore cronjob names must have length <= 63-11=52. If we don't validate this here,
// then job creation will fail later.
allErrs = append(allErrs, field.Invalid(field.NewPath("metadata").Child("name"), scheduledJob.ObjectMeta.Name, "must be no more than 52 characters"))
}
return allErrs
}

16
pkg/apis/batch/validation/validation_test.go
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@@ -520,6 +520,22 @@ func TestValidateCronJob(t *testing.T) {
},
},
},
"metadata.name: must be no more than 52 characters": {
ObjectMeta: metav1.ObjectMeta{
Name: "10000000002000000000300000000040000000005000000000123",
Namespace: metav1.NamespaceDefault,
UID: types.UID("1a2b3c"),
},
Spec: batch.CronJobSpec{
Schedule: "* * * * ?",
ConcurrencyPolicy: batch.AllowConcurrent,
JobTemplate: batch.JobTemplateSpec{
Spec: batch.JobSpec{
Template: validPodTemplateSpec,
},
},
},
},
"spec.jobTemplate.spec.manualSelector: Unsupported value": {
ObjectMeta: metav1.ObjectMeta{
Name: "mycronjob",