Use deepcopy to propagate the spec to clusters.

Avoid sharing pointers to the same spec data between the informer
and the clusters. The only catch is that the error field is cleared
during deepcopy, since it is an interface that may contain private
fields that cannot be copied, however, the error is only used when
the manifest is parsed and before it is queued, therefore, we never
refer to that field in the cluster structure.

glide.lock

@@ -1,8 +1,8 @@
-hash: aa008e00a8cf34fa59a081dd67644319f9d5d077bf4de81aa4a25a2d5b8781a1
-updated: 2018-01-15T15:00:53.231516+01:00
+hash: 688e15147f1217da635b83ee33f20a3741a400a493787d79992d1650f6e4c514
+updated: 2018-05-17T10:46:49.090929+02:00
 imports:
 - name: github.com/aws/aws-sdk-go
-  version: 0cebc639926eb91b0192dae4b28bc808417e764c
+  version: ee7b4b1162937cba700de23bd90acb742982e626
   subpackages:
   - aws
   - aws/awserr
@@ -20,6 +20,8 @@ imports:
   - aws/request
   - aws/session
   - aws/signer/v4
+  - internal/sdkio
+  - internal/sdkrand
   - internal/shareddefaults
   - private/protocol
   - private/protocol/ec2query
@@ -97,6 +99,8 @@ imports:
   - buffer
   - jlexer
   - jwriter
+- name: github.com/mohae/deepcopy
+  version: c48cc78d482608239f6c4c92a4abd87eb8761c90
 - name: github.com/motomux/pretty
   version: b2aad2c9a95d14eb978f29baa6e3a5c3c20eef30
 - name: github.com/PuerkitoBio/purell
@@ -104,7 +108,7 @@ imports:
 - name: github.com/PuerkitoBio/urlesc
   version: 5bd2802263f21d8788851d5305584c82a5c75d7e
 - name: github.com/Sirupsen/logrus
-  version: d682213848ed68c0a260ca37d6dd5ace8423f5ba
+  version: c155da19408a8799da419ed3eeb0cb5db0ad5dbc
 - name: github.com/spf13/pflag
   version: 9ff6c6923cfffbcd502984b8e0c80539a94968b7
 - name: github.com/ugorji/go
@@ -153,7 +157,7 @@ imports:
   - pkg/client/clientset/clientset/scheme
   - pkg/client/clientset/clientset/typed/apiextensions/v1beta1
 - name: k8s.io/apimachinery
-  version: 8ab5f3d8a330c2e9baaf84e39042db8d49034ae2
+  version: 1cb2cdd78d38df243e686d1b572b76e190469842
   subpackages:
   - pkg/api/equality
   - pkg/api/errors

glide.yaml

@@ -44,3 +44,4 @@ import:
   - tools/clientcmd
   - tools/remotecommand
 - package: gopkg.in/yaml.v2
+- package: github.com/mohae/deepcopy

pkg/controller/postgresql.go

@@ -348,10 +348,9 @@ func (c *Controller) mergeDeprecatedPostgreSQLSpecParameters(spec *spec.Postgres
 
 func (c *Controller) queueClusterEvent(informerOldSpec, informerNewSpec *spec.Postgresql, eventType spec.EventType) {
 	var (
-		uid              types.UID
-		clusterName      spec.NamespacedName
-		clusterError     error
-		oldSpec, newSpec *spec.Postgresql
+		uid          types.UID
+		clusterName  spec.NamespacedName
+		clusterError error
 	)
 
 	if informerOldSpec != nil { //update, delete
@@ -380,22 +379,13 @@ func (c *Controller) queueClusterEvent(informerOldSpec, informerNewSpec *spec.Po
 	// in the informer internal state, making it incohherent with the actual Kubernetes object (and, as a side
 	// effect, the modified state will be returned together with subsequent events).
 
-	if informerOldSpec != nil {
-		t := *informerOldSpec
-		oldSpec = &t
-	}
-	if informerNewSpec != nil {
-		t := *informerNewSpec
-		newSpec = &t
-	}
-
 	workerID := c.clusterWorkerID(clusterName)
 	clusterEvent := spec.ClusterEvent{
 		EventTime: time.Now(),
 		EventType: eventType,
 		UID:       uid,
-		OldSpec:   oldSpec,
-		NewSpec:   newSpec,
+		OldSpec:   informerOldSpec.Clone(),
+		NewSpec:   informerNewSpec.Clone(),
 		WorkerID:  workerID,
 	}
 

pkg/spec/postgresql.go

@@ -3,6 +3,7 @@ package spec
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/mohae/deepcopy"
 	"regexp"
 	"strings"
 	"time"
@@ -138,6 +139,19 @@ var (
 	serviceNameRegex = regexp.MustCompile(serviceNameRegexString)
 )
 
+// Clone makes a deepcopy of the Postgresql structure. The Error field is nulled-out,
+// as there is no guaratee that the actual implementation of the error interface
+// will not contain any private fields not-reachable to deepcopy. This should be ok,
+// since Error is never read from a Kubernetes object.
+func (p *Postgresql) Clone() *Postgresql {
+	if p == nil {
+		return nil
+	}
+	c := deepcopy.Copy(p).(*Postgresql)
+	c.Error = nil
+	return c
+}
+
 func parseTime(s string) (time.Time, error) {
 	parts := strings.Split(s, ":")
 	if len(parts) != 2 {

pkg/spec/postgresql_test.go

@@ -4,11 +4,10 @@ import (
 	"bytes"
 	"encoding/json"
 	"errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"reflect"
 	"testing"
 	"time"
-
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 var parseTimeTests = []struct {
@@ -546,3 +545,15 @@ func TestPostgresListMeta(t *testing.T) {
 		return
 	}
 }
+
+func TestPostgresqlClone(t *testing.T) {
+	for _, tt := range unmarshalCluster {
+		cp := &tt.out
+		cp.Error = nil
+		clone := cp.Clone()
+		if !reflect.DeepEqual(clone, cp) {
+			t.Errorf("TestPostgresqlClone expected: \n%#v\n, got \n%#v", cp, clone)
+		}
+
+	}
+}