forked from kubernetes-sigs/kustomize
/
fnplugin_test.go
862 lines (817 loc) · 19.8 KB
/
fnplugin_test.go
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// Copyright 2022 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package krusty_test
import (
"os"
"os/exec"
"path/filepath"
"runtime"
"testing"
"github.com/stretchr/testify/assert"
. "sigs.k8s.io/kustomize/api/krusty"
kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
"sigs.k8s.io/kustomize/kyaml/filesys"
)
const generateDeploymentDotSh = `#!/bin/sh
cat <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
labels:
app: nginx
annotations:
tshirt-size: small # this injects the resource reservations
spec:
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
EOF
`
func TestFnExecGenerator(t *testing.T) {
fSys := filesys.MakeFsOnDisk()
th := kusttest_test.MakeHarnessWithFs(t, fSys)
o := th.MakeOptionsPluginsEnabled()
o.PluginConfig.FnpLoadingOptions.EnableExec = true
tmpDir, err := filesys.NewTmpConfirmedDir()
assert.NoError(t, err)
th.WriteK(tmpDir.String(), `
resources:
- short_secret.yaml
generators:
- gener.yaml
`)
// Create some additional resource just to make sure everything is added
th.WriteF(filepath.Join(tmpDir.String(), "short_secret.yaml"),
`
apiVersion: v1
kind: Secret
metadata:
labels:
airshipit.org/ephemeral-user-data: "true"
name: node1-bmc-secret
type: Opaque
stringData:
userData: |
bootcmd:
- mkdir /mnt/vda
`)
th.WriteF(filepath.Join(tmpDir.String(), "generateDeployment.sh"), generateDeploymentDotSh)
assert.NoError(t, os.Chmod(filepath.Join(tmpDir.String(), "generateDeployment.sh"), 0777))
th.WriteF(filepath.Join(tmpDir.String(), "gener.yaml"), `
kind: executable
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
exec:
path: ./generateDeployment.sh
spec:
`)
m := th.Run(tmpDir.String(), o)
assert.NoError(t, err)
yml, err := m.AsYaml()
assert.NoError(t, err)
assert.Equal(t, `apiVersion: v1
kind: Secret
metadata:
labels:
airshipit.org/ephemeral-user-data: "true"
name: node1-bmc-secret
stringData:
userData: |
bootcmd:
- mkdir /mnt/vda
type: Opaque
---
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
tshirt-size: small
labels:
app: nginx
name: nginx
spec:
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- image: nginx
name: nginx
`, string(yml))
assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
}
func TestFnExecGeneratorWithOverlay(t *testing.T) {
fSys := filesys.MakeFsOnDisk()
th := kusttest_test.MakeHarnessWithFs(t, fSys)
o := th.MakeOptionsPluginsEnabled()
o.PluginConfig.FnpLoadingOptions.EnableExec = true
tmpDir, err := filesys.NewTmpConfirmedDir()
assert.NoError(t, err)
base := filepath.Join(tmpDir.String(), "base")
prod := filepath.Join(tmpDir.String(), "prod")
assert.NoError(t, fSys.Mkdir(base))
assert.NoError(t, fSys.Mkdir(prod))
th.WriteK(base, `
resources:
- short_secret.yaml
generators:
- gener.yaml
`)
th.WriteK(prod, `
resources:
- ../base
`)
th.WriteF(filepath.Join(base, "short_secret.yaml"),
`
apiVersion: v1
kind: Secret
metadata:
labels:
airshipit.org/ephemeral-user-data: "true"
name: node1-bmc-secret
type: Opaque
stringData:
userData: |
bootcmd:
- mkdir /mnt/vda
`)
th.WriteF(filepath.Join(base, "generateDeployment.sh"), generateDeploymentDotSh)
assert.NoError(t, os.Chmod(filepath.Join(base, "generateDeployment.sh"), 0777))
th.WriteF(filepath.Join(base, "gener.yaml"), `
kind: executable
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
exec:
path: ./generateDeployment.sh
spec:
`)
m := th.Run(prod, o)
assert.NoError(t, err)
yml, err := m.AsYaml()
assert.NoError(t, err)
assert.Equal(t, `apiVersion: v1
kind: Secret
metadata:
labels:
airshipit.org/ephemeral-user-data: "true"
name: node1-bmc-secret
stringData:
userData: |
bootcmd:
- mkdir /mnt/vda
type: Opaque
---
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
tshirt-size: small
labels:
app: nginx
name: nginx
spec:
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- image: nginx
name: nginx
`, string(yml))
assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
}
func skipIfNoDocker(t *testing.T) {
t.Helper()
if _, err := exec.LookPath("docker"); err != nil {
t.Skip("skipping because docker binary wasn't found in PATH")
}
}
func TestFnContainerGenerator(t *testing.T) {
t.Skip("wait for #3881")
skipIfNoDocker(t)
// Function plugins should not need the env setup done by MakeEnhancedHarness
th := kusttest_test.MakeHarness(t)
th.WriteK(".", `
resources:
- short_secret.yaml
generators:
- gener.yaml
`)
// Create generator config
th.WriteF("gener.yaml", `
apiVersion: examples.config.kubernetes.io/v1beta1
kind: CockroachDB
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
container:
image: gcr.io/kustomize-functions/example-cockroachdb:v0.1.0
spec:
replicas: 3
`)
// Create some additional resource just to make sure everything is added
th.WriteF("short_secret.yaml", `
apiVersion: v1
kind: Secret
metadata:
labels:
airshipit.org/ephemeral-user-data: "true"
name: node1-bmc-secret
type: Opaque
stringData:
userData: |
bootcmd:
- mkdir /mnt/vda
`)
m := th.Run(".", th.MakeOptionsPluginsEnabled())
th.AssertActualEqualsExpected(m, `
apiVersion: v1
kind: Secret
metadata:
labels:
airshipit.org/ephemeral-user-data: "true"
name: node1-bmc-secret
stringData:
userData: |
bootcmd:
- mkdir /mnt/vda
type: Opaque
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
labels:
app: cockroachdb
name: demo
name: demo-budget
spec:
minAvailable: 67%
selector:
matchLabels:
app: cockroachdb
name: demo
---
apiVersion: v1
kind: Service
metadata:
labels:
app: cockroachdb
name: demo
name: demo-public
spec:
ports:
- name: grpc
port: 26257
targetPort: 26257
- name: http
port: 8080
targetPort: 8080
selector:
app: cockroachdb
name: demo
---
apiVersion: v1
kind: Service
metadata:
annotations:
prometheus.io/path: _status/vars
prometheus.io/port: "8080"
prometheus.io/scrape: "true"
service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
labels:
app: cockroachdb
name: demo
name: demo
spec:
clusterIP: None
ports:
- name: grpc
port: 26257
targetPort: 26257
- name: http
port: 8080
targetPort: 8080
selector:
app: cockroachdb
name: demo
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
labels:
app: cockroachdb
name: demo
name: demo
spec:
replicas: 3
selector:
matchLabels:
app: cockroachdb
name: demo
serviceName: demo
template:
metadata:
labels:
app: cockroachdb
name: demo
spec:
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- podAffinityTerm:
labelSelector:
matchExpressions:
- key: app
operator: In
values:
- cockroachdb
topologyKey: kubernetes.io/hostname
weight: 100
containers:
- command:
- /bin/bash
- -ecx
- |
# The use of qualified `+"`hostname -f`"+` is crucial:
# Other nodes aren't able to look up the unqualified hostname.
CRARGS=("start" "--logtostderr" "--insecure" "--host" "$(hostname -f)" "--http-host" "0.0.0.0")
# We only want to initialize a new cluster (by omitting the join flag)
# if we're sure that we're the first node (i.e. index 0) and that
# there aren't any other nodes running as part of the cluster that
# this is supposed to be a part of (which indicates that a cluster
# already exists and we should make sure not to create a new one).
# It's fine to run without --join on a restart if there aren't any
# other nodes.
if [ ! "$(hostname)" == "cockroachdb-0" ] || [ -e "/cockroach/cockroach-data/cluster_exists_marker" ]
then
# We don't join cockroachdb in order to avoid a node attempting
# to join itself, which currently doesn't work
# (https://github.com/cockroachdb/cockroach/issues/9625).
CRARGS+=("--join" "cockroachdb-public")
fi
exec /cockroach/cockroach ${CRARGS[*]}
image: cockroachdb/cockroach:v1.1.0
imagePullPolicy: IfNotPresent
name: demo
ports:
- containerPort: 26257
name: grpc
- containerPort: 8080
name: http
volumeMounts:
- mountPath: /cockroach/cockroach-data
name: datadir
initContainers:
- args:
- -on-start=/on-start.sh
- -service=cockroachdb
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
image: cockroachdb/cockroach-k8s-init:0.1
imagePullPolicy: IfNotPresent
name: bootstrap
volumeMounts:
- mountPath: /cockroach/cockroach-data
name: datadir
terminationGracePeriodSeconds: 60
volumes:
- name: datadir
persistentVolumeClaim:
claimName: datadir
volumeClaimTemplates:
- metadata:
name: datadir
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
`)
}
func TestFnContainerTransformer(t *testing.T) {
t.Skip("wait for #3881")
skipIfNoDocker(t)
// Function plugins should not need the env setup done by MakeEnhancedHarness
th := kusttest_test.MakeHarness(t)
th.WriteK(".", `
resources:
- data.yaml
transformers:
- transf1.yaml
- transf2.yaml
`)
th.WriteF("data.yaml", `
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
labels:
app: nginx
annotations:
tshirt-size: small # this injects the resource reservations
spec:
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
`)
// This transformer should add resource reservations based on annotation in data.yaml
// See https://github.com/kubernetes-sigs/kustomize/tree/master/functions/examples/injection-tshirt-sizes
th.WriteF("transf1.yaml", `
apiVersion: examples.config.kubernetes.io/v1beta1
kind: Validator
metadata:
name: valid
annotations:
config.kubernetes.io/function: |-
container:
image: gcr.io/kustomize-functions/example-tshirt:v0.2.0
`)
// This transformer will check resources without and won't do any changes
// See https://github.com/kubernetes-sigs/kustomize/tree/master/functions/examples/validator-kubeval
th.WriteF("transf2.yaml", `
apiVersion: examples.config.kubernetes.io/v1beta1
kind: Kubeval
metadata:
name: validate
annotations:
config.kubernetes.io/function: |
container:
image: gcr.io/kustomize-functions/example-validator-kubeval:v0.1.0
spec:
strict: true
ignoreMissingSchemas: true
# TODO: Update this to use network/volumes features.
# Relevant issues:
# - https://github.com/kubernetes-sigs/kustomize/issues/1901
# - https://github.com/kubernetes-sigs/kustomize/issues/1902
kubernetesVersion: "1.16.0"
schemaLocation: "file:///schemas"
`)
m := th.Run(".", th.MakeOptionsPluginsEnabled())
th.AssertActualEqualsExpected(m, `
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
tshirt-size: small
labels:
app: nginx
name: nginx
spec:
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- image: nginx
name: nginx
resources:
requests:
cpu: 200m
memory: 50M
`)
}
func TestFnContainerTransformerWithConfig(t *testing.T) {
skipIfNoDocker(t)
// Function plugins should not need the env setup done by MakeEnhancedHarness
th := kusttest_test.MakeHarness(t)
th.WriteK(".", `
resources:
- data1.yaml
- data2.yaml
transformers:
- label_namespace.yaml
`)
th.WriteF("data1.yaml", `apiVersion: v1
kind: Namespace
metadata:
name: my-namespace
`)
th.WriteF("data2.yaml", `apiVersion: v1
kind: Namespace
metadata:
name: another-namespace
`)
th.WriteF("label_namespace.yaml", `apiVersion: v1
kind: ConfigMap
metadata:
name: label_namespace
annotations:
config.kubernetes.io/function: |-
container:
image: gcr.io/kpt-functions/label-namespace@sha256:4f030738d6d25a207641ca517916431517578bd0eb8d98a8bde04e3bb9315dcd
data:
label_name: my-ns-name
label_value: function-test
`)
m := th.Run(".", th.MakeOptionsPluginsEnabled())
th.AssertActualEqualsExpected(m, `
apiVersion: v1
kind: Namespace
metadata:
labels:
my-ns-name: function-test
name: my-namespace
---
apiVersion: v1
kind: Namespace
metadata:
labels:
my-ns-name: function-test
name: another-namespace
`)
}
func TestFnContainerEnvVars(t *testing.T) {
skipIfNoDocker(t)
// Function plugins should not need the env setup done by MakeEnhancedHarness
th := kusttest_test.MakeHarness(t)
th.WriteK(".", `
generators:
- gener.yaml
`)
// TODO: cheange image to gcr.io/kpt-functions/templater:stable
// when https://github.com/GoogleContainerTools/kpt-functions-catalog/pull/103
// is merged
th.WriteF("gener.yaml", `
apiVersion: v1
kind: ConfigMap
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
container:
image: quay.io/aodinokov/kpt-templater:0.0.1
envs:
- TESTTEMPLATE=value
data:
template: |
apiVersion: v1
kind: ConfigMap
metadata:
name: env
data:
value: '{{ env "TESTTEMPLATE" }}'
`)
m := th.Run(".", th.MakeOptionsPluginsEnabled())
th.AssertActualEqualsExpected(m, `
apiVersion: v1
data:
value: value
kind: ConfigMap
metadata:
name: env
`)
}
func TestFnContainerMounts(t *testing.T) {
skipIfNoDocker(t)
th := kusttest_test.MakeHarness(t)
o := th.MakeOptionsPluginsEnabled()
fSys := filesys.MakeFsOnDisk()
b := MakeKustomizer(&o)
tmpDir, err := filesys.NewTmpConfirmedDir()
assert.NoError(t, err)
path, err := os.Getwd()
assert.NoError(t, err)
src := filepath.Join(path, "testdata", "charts") + string(filepath.Separator)
dst := filepath.Join(tmpDir.String(), "testdata", "charts") + string(filepath.Separator)
assert.NoError(t, os.MkdirAll(dst, 0777))
switch runtime.GOOS {
case "darwin":
cmd := exec.Command("cp", "-r", src, dst)
assert.NoError(t, cmd.Run())
case "linux":
d := dst + "."
cmd := exec.Command("cp", "-r", src, d)
assert.NoError(t, cmd.Run())
default:
t.SkipNow()
}
chartPath, err := filepath.Rel(tmpDir.String(), dst)
assert.NoError(t, err)
assert.NoError(t, fSys.WriteFile(filepath.Join(tmpDir.String(), "kustomization.yaml"), []byte(`
generators:
- |-
apiVersion: v1alpha1
kind: RenderHelmChart
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
container:
image: gcr.io/kpt-fn/render-helm-chart:v0.1.0
mounts:
- type: "bind"
src: "`+chartPath+`"
dst: "/tmp/charts"
helmCharts:
- name: helloworld-chart
releaseName: test
valuesFile: /tmp/charts/helloworld-values/values.yaml
`)))
m, err := b.Run(
fSys,
tmpDir.String())
assert.NoError(t, err)
yml, err := m.AsYaml()
assert.NoError(t, err)
assert.Equal(t, `apiVersion: v1
kind: ServiceAccount
metadata:
labels:
app.kubernetes.io/instance: test
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: helloworld-chart
app.kubernetes.io/version: 1.16.0
helm.sh/chart: helloworld-chart-0.1.0
name: test-helloworld-chart
---
apiVersion: v1
kind: Service
metadata:
labels:
app.kubernetes.io/instance: test
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: helloworld-chart
app.kubernetes.io/version: 1.16.0
helm.sh/chart: helloworld-chart-0.1.0
name: test-helloworld-chart
spec:
ports:
- name: http
port: 80
protocol: TCP
targetPort: http
selector:
app.kubernetes.io/instance: test
app.kubernetes.io/name: helloworld-chart
type: ClusterIP
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app.kubernetes.io/instance: test
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: helloworld-chart
app.kubernetes.io/version: 1.16.0
helm.sh/chart: helloworld-chart-0.1.0
name: test-helloworld-chart
spec:
replicas: 5
selector:
matchLabels:
app.kubernetes.io/instance: test
app.kubernetes.io/name: helloworld-chart
template:
metadata:
labels:
app.kubernetes.io/instance: test
app.kubernetes.io/name: helloworld-chart
spec:
containers:
- image: nginx:1.16.0
imagePullPolicy: Always
livenessProbe:
httpGet:
path: /
port: http
name: helloworld-chart
ports:
- containerPort: 80
name: http
protocol: TCP
readinessProbe:
httpGet:
path: /
port: http
resources: {}
securityContext: {}
securityContext: {}
serviceAccountName: test-helloworld-chart
---
apiVersion: v1
kind: Pod
metadata:
annotations:
helm.sh/hook: test-success
labels:
app.kubernetes.io/instance: test
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: helloworld-chart
app.kubernetes.io/version: 1.16.0
helm.sh/chart: helloworld-chart-0.1.0
name: test-helloworld-chart-test-connection
spec:
containers:
- args:
- test-helloworld-chart:80
command:
- wget
image: busybox
name: wget
restartPolicy: Never
`, string(yml))
assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
}
func TestFnContainerMountsLoadRestrictions_absolute(t *testing.T) {
skipIfNoDocker(t)
th := kusttest_test.MakeHarness(t)
o := th.MakeOptionsPluginsEnabled()
fSys := filesys.MakeFsOnDisk()
b := MakeKustomizer(&o)
tmpDir, err := filesys.NewTmpConfirmedDir()
assert.NoError(t, err)
assert.NoError(t, fSys.WriteFile(filepath.Join(tmpDir.String(), "kustomization.yaml"), []byte(`
generators:
- |-
apiVersion: v1alpha1
kind: RenderHelmChart
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
container:
image: gcr.io/kpt-fn/render-helm-chart:v0.1.0
mounts:
- type: "bind"
src: "/tmp/dir"
dst: "/tmp/charts"
`)))
_, err = b.Run(
fSys,
tmpDir.String())
assert.Error(t, err)
assert.Contains(t, err.Error(), "loading generator plugins: plugin RenderHelmChart."+
"v1alpha1.[noGrp]/demo.[noNs] with mount path '/tmp/dir' is not permitted; mount paths must"+
" be relative to the current kustomization directory")
}
func TestFnContainerMountsLoadRestrictions_outsideCurrentDir(t *testing.T) {
skipIfNoDocker(t)
th := kusttest_test.MakeHarness(t)
o := th.MakeOptionsPluginsEnabled()
fSys := filesys.MakeFsOnDisk()
b := MakeKustomizer(&o)
tmpDir, err := filesys.NewTmpConfirmedDir()
assert.NoError(t, err)
assert.NoError(t, fSys.WriteFile(filepath.Join(tmpDir.String(), "kustomization.yaml"), []byte(`
generators:
- |-
apiVersion: v1alpha1
kind: RenderHelmChart
metadata:
name: demo
annotations:
config.kubernetes.io/function: |
container:
image: gcr.io/kpt-fn/render-helm-chart:v0.1.0
mounts:
- type: "bind"
src: "./tmp/../../dir"
dst: "/tmp/charts"
`)))
_, err = b.Run(
fSys,
tmpDir.String())
assert.Error(t, err)
assert.Contains(t, err.Error(), "loading generator plugins: plugin RenderHelmChart."+
"v1alpha1.[noGrp]/demo.[noNs] with mount path './tmp/../../dir' is not permitted; mount paths must "+
"be under the current kustomization directory")
}