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-rw-r--r--pkg/specgen/generate/kube/kube.go49
-rw-r--r--pkg/specgen/generate/kube/play_test.go204
2 files changed, 251 insertions, 2 deletions
diff --git a/pkg/specgen/generate/kube/kube.go b/pkg/specgen/generate/kube/kube.go
index f31f5e711..31ed3fd7c 100644
--- a/pkg/specgen/generate/kube/kube.go
+++ b/pkg/specgen/generate/kube/kube.go
@@ -2,11 +2,13 @@ package kube
import (
"context"
+ "encoding/json"
"fmt"
"net"
"strings"
"github.com/containers/common/pkg/parse"
+ "github.com/containers/common/pkg/secrets"
"github.com/containers/podman/v3/libpod/image"
ann "github.com/containers/podman/v3/pkg/annotations"
"github.com/containers/podman/v3/pkg/specgen"
@@ -94,6 +96,8 @@ type CtrSpecGenOptions struct {
RestartPolicy string
// NetNSIsHost tells the container to use the host netns
NetNSIsHost bool
+ // SecretManager to access the secrets
+ SecretsManager *secrets.SecretsManager
}
func ToSpecGen(ctx context.Context, opts *CtrSpecGenOptions) (*specgen.SpecGenerator, error) {
@@ -331,7 +335,21 @@ func quantityToInt64(quantity *resource.Quantity) (int64, error) {
return 0, errors.Errorf("Quantity cannot be represented as int64: %v", quantity)
}
-// envVarsFrom returns all key-value pairs as env vars from a configMap that matches the envFrom setting of a container
+// read a k8s secret in JSON format from the secret manager
+func k8sSecretFromSecretManager(name string, secretsManager *secrets.SecretsManager) (map[string][]byte, error) {
+ _, jsonSecret, err := secretsManager.LookupSecretData(name)
+ if err != nil {
+ return nil, err
+ }
+
+ var secrets map[string][]byte
+ if err := json.Unmarshal(jsonSecret, &secrets); err != nil {
+ return nil, errors.Errorf("Secret %v is not valid JSON: %v", name, err)
+ }
+ return secrets, nil
+}
+
+// envVarsFrom returns all key-value pairs as env vars from a configMap or secret that matches the envFrom setting of a container
func envVarsFrom(envFrom v1.EnvFromSource, opts *CtrSpecGenOptions) (map[string]string, error) {
envs := map[string]string{}
@@ -352,11 +370,23 @@ func envVarsFrom(envFrom v1.EnvFromSource, opts *CtrSpecGenOptions) (map[string]
}
}
+ if envFrom.SecretRef != nil {
+ secRef := envFrom.SecretRef
+ secret, err := k8sSecretFromSecretManager(secRef.Name, opts.SecretsManager)
+ if err == nil {
+ for k, v := range secret {
+ envs[k] = string(v)
+ }
+ } else if secRef.Optional == nil || !*secRef.Optional {
+ return nil, err
+ }
+ }
+
return envs, nil
}
// envVarValue returns the environment variable value configured within the container's env setting.
-// It gets the value from a configMap if specified, otherwise returns env.Value
+// It gets the value from a configMap or secret if specified, otherwise returns env.Value
func envVarValue(env v1.EnvVar, opts *CtrSpecGenOptions) (string, error) {
if env.ValueFrom != nil {
if env.ValueFrom.ConfigMapKeyRef != nil {
@@ -377,6 +407,21 @@ func envVarValue(env v1.EnvVar, opts *CtrSpecGenOptions) (string, error) {
}
return "", nil
}
+
+ if env.ValueFrom.SecretKeyRef != nil {
+ secKeyRef := env.ValueFrom.SecretKeyRef
+ secret, err := k8sSecretFromSecretManager(secKeyRef.Name, opts.SecretsManager)
+ if err == nil {
+ if val, ok := secret[secKeyRef.Key]; ok {
+ return string(val), nil
+ }
+ err = errors.Errorf("Secret %v has not %v key", secKeyRef.Name, secKeyRef.Key)
+ }
+ if secKeyRef.Optional == nil || !*secKeyRef.Optional {
+ return "", errors.Errorf("Cannot set env %v: %v", env.Name, err)
+ }
+ return "", nil
+ }
}
return env.Value, nil
diff --git a/pkg/specgen/generate/kube/play_test.go b/pkg/specgen/generate/kube/play_test.go
index c38b3e40b..f714826f0 100644
--- a/pkg/specgen/generate/kube/play_test.go
+++ b/pkg/specgen/generate/kube/play_test.go
@@ -1,14 +1,43 @@
package kube
import (
+ "encoding/json"
+ "io/ioutil"
+ "os"
"testing"
+ "github.com/containers/common/pkg/secrets"
"github.com/stretchr/testify/assert"
v1 "k8s.io/api/core/v1"
v12 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
+func createSecrets(t *testing.T, d string) *secrets.SecretsManager {
+ secretsManager, err := secrets.NewManager(d)
+ assert.NoError(t, err)
+
+ driver := "file"
+ driverOpts := map[string]string{
+ "path": d,
+ }
+
+ for _, s := range k8sSecrets {
+ data, err := json.Marshal(s.Data)
+ assert.NoError(t, err)
+
+ _, err = secretsManager.Store(s.ObjectMeta.Name, data, driver, driverOpts)
+ assert.NoError(t, err)
+ }
+
+ return secretsManager
+}
+
func TestEnvVarsFrom(t *testing.T) {
+ d, err := ioutil.TempDir("", "secrets")
+ assert.NoError(t, err)
+ defer os.RemoveAll(d)
+ secretsManager := createSecrets(t, d)
+
tests := []struct {
name string
envFrom v1.EnvFromSource
@@ -95,6 +124,54 @@ func TestEnvVarsFrom(t *testing.T) {
true,
map[string]string{},
},
+ {
+ "SecretExists",
+ v1.EnvFromSource{
+ SecretRef: &v1.SecretEnvSource{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "foo",
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ true,
+ map[string]string{
+ "myvar": "foo",
+ },
+ },
+ {
+ "SecretDoesNotExist",
+ v1.EnvFromSource{
+ SecretRef: &v1.SecretEnvSource{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "doesnotexist",
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ false,
+ nil,
+ },
+ {
+ "OptionalSecretDoesNotExist",
+ v1.EnvFromSource{
+ SecretRef: &v1.SecretEnvSource{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "doesnotexist",
+ },
+ Optional: &optional,
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ true,
+ map[string]string{},
+ },
}
for _, test := range tests {
@@ -108,6 +185,11 @@ func TestEnvVarsFrom(t *testing.T) {
}
func TestEnvVarValue(t *testing.T) {
+ d, err := ioutil.TempDir("", "secrets")
+ assert.NoError(t, err)
+ defer os.RemoveAll(d)
+ secretsManager := createSecrets(t, d)
+
tests := []struct {
name string
envVar v1.EnvVar
@@ -251,6 +333,103 @@ func TestEnvVarValue(t *testing.T) {
true,
"",
},
+ {
+ "SecretExists",
+ v1.EnvVar{
+ Name: "FOO",
+ ValueFrom: &v1.EnvVarSource{
+ SecretKeyRef: &v1.SecretKeySelector{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "foo",
+ },
+ Key: "myvar",
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ true,
+ "foo",
+ },
+ {
+ "ContainerKeyDoesNotExistInSecret",
+ v1.EnvVar{
+ Name: "FOO",
+ ValueFrom: &v1.EnvVarSource{
+ SecretKeyRef: &v1.SecretKeySelector{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "foo",
+ },
+ Key: "doesnotexist",
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ false,
+ "",
+ },
+ {
+ "OptionalContainerKeyDoesNotExistInSecret",
+ v1.EnvVar{
+ Name: "FOO",
+ ValueFrom: &v1.EnvVarSource{
+ SecretKeyRef: &v1.SecretKeySelector{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "foo",
+ },
+ Key: "doesnotexist",
+ Optional: &optional,
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ true,
+ "",
+ },
+ {
+ "SecretDoesNotExist",
+ v1.EnvVar{
+ Name: "FOO",
+ ValueFrom: &v1.EnvVarSource{
+ SecretKeyRef: &v1.SecretKeySelector{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "doesnotexist",
+ },
+ Key: "myvar",
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ false,
+ "",
+ },
+ {
+ "OptionalSecretDoesNotExist",
+ v1.EnvVar{
+ Name: "FOO",
+ ValueFrom: &v1.EnvVarSource{
+ SecretKeyRef: &v1.SecretKeySelector{
+ LocalObjectReference: v1.LocalObjectReference{
+ Name: "doesnotexist",
+ },
+ Key: "myvar",
+ Optional: &optional,
+ },
+ },
+ },
+ CtrSpecGenOptions{
+ SecretsManager: secretsManager,
+ },
+ true,
+ "",
+ },
}
for _, test := range tests {
@@ -289,3 +468,28 @@ var configMapList = []v1.ConfigMap{
}
var optional = true
+
+var k8sSecrets = []v1.Secret{
+ {
+ TypeMeta: v12.TypeMeta{
+ Kind: "Secret",
+ },
+ ObjectMeta: v12.ObjectMeta{
+ Name: "bar",
+ },
+ Data: map[string][]byte{
+ "myvar": []byte("bar"),
+ },
+ },
+ {
+ TypeMeta: v12.TypeMeta{
+ Kind: "Secret",
+ },
+ ObjectMeta: v12.ObjectMeta{
+ Name: "foo",
+ },
+ Data: map[string][]byte{
+ "myvar": []byte("foo"),
+ },
+ },
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-10-30 21:38:43 +0000