make id and payload columns configurable

pkg/apis/acid.zalan.do/v1/crds.go

@@ -682,7 +682,19 @@ var PostgresCRDResourceValidation = apiextv1.CustomResourceValidation{
 										Type: "object",
 										AdditionalProperties: &apiextv1.JSONSchemaPropsOrBool{
 											Schema: &apiextv1.JSONSchemaProps{
-												Type: "string",
+												Type:     "object",
+												Required: []string{"eventType"},
+												Properties: map[string]apiextv1.JSONSchemaProps{
+													"eventType": {
+														Type: "string",
+													},
+													"idColumn": {
+														Type: "string",
+													},
+													"payloadColumn": {
+														Type: "string",
+													},
+												},
 											},
 										},
 									},

pkg/apis/acid.zalan.do/v1/postgresql_type.go

@@ -229,8 +229,14 @@ type ConnectionPooler struct {
 }
 
 type Stream struct {
-	Database  string            `json:"database"`
-	Tables    map[string]string `json:"tables"`
-	Filter    map[string]string `json:"filter,omitempty"`
-	BatchSize uint32            `json:"batchSize,omitempty"`
+	Database  string                 `json:"database"`
+	Tables    map[string]StreamTable `json:"tables"`
+	Filter    map[string]string      `json:"filter,omitempty"`
+	BatchSize uint32                 `json:"batchSize,omitempty"`
+}
+
+type StreamTable struct {
+	EventType     string `json:"eventType"`
+	IdColumn      string `json:"idColumn,omitempty" defaults:"id"`
+	PayloadColumn string `json:"payloadColumn,omitempty" defaults:"payload"`
 }

pkg/apis/acid.zalan.do/v1/zz_generated.deepcopy.go

@@ -1143,7 +1143,7 @@ func (in *Stream) DeepCopyInto(out *Stream) {
 	*out = *in
 	if in.Tables != nil {
 		in, out := &in.Tables, &out.Tables
-		*out = make(map[string]string, len(*in))
+		*out = make(map[string]StreamTable, len(*in))
 		for key, val := range *in {
 			(*out)[key] = val
 		}
@@ -1168,6 +1168,22 @@ func (in *Stream) DeepCopy() *Stream {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StreamTable) DeepCopyInto(out *StreamTable) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StreamTable.
+func (in *StreamTable) DeepCopy() *StreamTable {
+	if in == nil {
+		return nil
+	}
+	out := new(StreamTable)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *TLSDescription) DeepCopyInto(out *TLSDescription) {
 	*out = *in