Handle bad metadata secret values gracefully (#224)

* Handle bad metadata secret values gracefully

* Fix chainguard build

deploy/apko.yaml.tmpl

@@ -6,7 +6,7 @@ contents:
     - https://packages.wolfi.dev/os/wolfi-signing.rsa.pub
     - ./melange.rsa.pub
   packages:
-    - replicated-head  # This is expected to be built locally by `melange`.
+    - replicated  # This is expected to be built locally by `melange`.
     - bash
     - busybox
     - curl

deploy/melange.yaml.tmpl

@@ -1,5 +1,5 @@
 package:
-  name: replicated-head
+  name: replicated
   version: ${GIT_TAG}
   epoch: 0
   description: replicated package

pkg/meta/latest_custom_metrics.go

@@ -16,7 +16,7 @@ func SyncCustomAppMetrics(ctx context.Context, clientset kubernetes.Interface, n
 	existing := map[string]interface{}{}
 
 	err := get(ctx, clientset, namespace, customMetricsSecretKey, &existing)
-	if err != nil && errors.Cause(err) != ErrReplicatedMetadataSecretNotFound {
+	if err != nil && errors.Cause(err) != ErrReplicatedMetadataNotFound {
 		return nil, errors.Wrapf(err, "failed to get custom metrics data")
 	}
 

pkg/meta/meta.go

@@ -6,6 +6,7 @@ import (
 	"sync"
 
 	"github.com/pkg/errors"
+	"github.com/replicatedhq/replicated-sdk/pkg/logger"
 	"github.com/replicatedhq/replicated-sdk/pkg/util"
 	corev1 "k8s.io/api/core/v1"
 	kuberneteserrors "k8s.io/apimachinery/pkg/api/errors"
@@ -90,8 +91,7 @@ func save(ctx context.Context, clientset kubernetes.Interface, namespace string,
 }
 
 var (
-	ErrReplicatedMetadataSecretEmpty    = errors.New("replicated metadata secret is empty")
-	ErrReplicatedMetadataSecretNotFound = errors.New("replicated metadata secret not found")
+	ErrReplicatedMetadataNotFound = errors.New("replicated metadata not found")
 )
 
 func get(ctx context.Context, clientset kubernetes.Interface, namespace string, key replicatedMetadataSecretKey, v interface{}) error {
@@ -101,20 +101,21 @@ func get(ctx context.Context, clientset kubernetes.Interface, namespace string,
 	}
 
 	if kuberneteserrors.IsNotFound(err) {
-		return ErrReplicatedMetadataSecretNotFound
+		return ErrReplicatedMetadataNotFound
 	}
 
 	if len(secret.Data) == 0 {
-		return ErrReplicatedMetadataSecretEmpty
+		return ErrReplicatedMetadataNotFound
 	}
 
 	dataBytes, ok := secret.Data[string(key)]
 	if !ok || len(dataBytes) == 0 {
-		return errors.Wrapf(ErrReplicatedMetadataSecretEmpty, "key (%s) not found in secret", key)
+		return errors.Wrapf(ErrReplicatedMetadataNotFound, "key (%s) not found in secret", key)
 	}
 
 	if err := json.Unmarshal(dataBytes, v); err != nil {
-		return errors.Wrapf(err, "failed to unmarshal secret data for key %s", key)
+		logger.Infof("failed to unmarshal secret data for key %s: %v", key, err)
+		return ErrReplicatedMetadataNotFound
 	}
 
 	return nil