provide event stream API

completed codegen manually
provide update and compare code for fes
add db check for specified databases and tables
add unit test

hack/update-codegen.sh

@@ -1,13 +1,18 @@
 #!/usr/bin/env bash
+set -eou pipefail
 
-set -o errexit
-set -o nounset
-set -o pipefail
+GOPKG="github.com/zalando/postgres-operator"
+SCRIPT_ROOT="$(dirname "${BASH_SOURCE[0]}")/.."
 
-SCRIPT_ROOT=$(dirname ${BASH_SOURCE})/..
-CODEGEN_PKG=${CODEGEN_PKG:-$(cd ${SCRIPT_ROOT}; ls -d -1 ./vendor/k8s.io/code-generator 2>/dev/null || echo ${GOPATH}/src/k8s.io/code-generator)}
+rm -rf "${SCRIPT_ROOT}/generated"
 
-bash "${CODEGEN_PKG}/generate-groups.sh" all \
-  github.com/zalando/postgres-operator/pkg/generated github.com/zalando/postgres-operator/pkg/apis \
-  "acid.zalan.do:v1" \
-  --go-header-file "${SCRIPT_ROOT}"/hack/custom-boilerplate.go.txt
+go run k8s.io/code-generator/cmd/deepcopy-gen \
+ --input-dirs ${GOPKG}/pkg/apis/acid.zalan.do/v1,${GOPKG}/pkg/apis/zalando.org/v1alpha1 \
+ -O zz_generated.deepcopy \
+ --bounding-dirs ${GOPKG}/pkg/apis \
+ --go-header-file "${SCRIPT_ROOT}/hack/custom-boilerplate.go.txt" \
+ -o "${SCRIPT_ROOT}/generated"
+
+cp -rv "${SCRIPT_ROOT}/generated/${GOPKG}"/* .
+
+rm -rf "${SCRIPT_ROOT}/generated"

manifests/operator-service-account-rbac.yaml

@@ -35,6 +35,20 @@ rules:
   - get
   - list
   - watch
+# all verbs allowed for event streams
+- apiGroups:
+  - zalando.org
+  resources:
+  - fabriceventstream
+  verbs:
+  - create
+  - delete
+  - deletecollection
+  - get
+  - list
+  - patch
+  - update
+  - watch
 # to create or get/update CRDs when starting up
 - apiGroups:
   - apiextensions.k8s.io

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

@@ -657,6 +657,53 @@ var PostgresCRDResourceValidation = apiextv1.CustomResourceValidation{
 							},
 						},
 					},
+					"streams": {
+						Type: "array",
+						Items: &apiextv1.JSONSchemaPropsOrArray{
+							Schema: &apiextv1.JSONSchemaProps{
+								Type:     "object",
+								Required: []string{"type"},
+								Properties: map[string]apiextv1.JSONSchemaProps{
+									"database": {
+										Type: "string",
+									},
+									"filter": {
+										Type: "object",
+										AdditionalProperties: &apiextv1.JSONSchemaPropsOrBool{
+											Schema: &apiextv1.JSONSchemaProps{
+												Type:        "string",
+											},
+										},
+									},
+									"sqsArn": {
+										Type: "string",
+									},
+									"tables": {
+										Type: "object",
+										AdditionalProperties: &apiextv1.JSONSchemaPropsOrBool{
+											Schema: &apiextv1.JSONSchemaProps{
+												Type:        "string",
+											},
+										},
+									},
+									"type": {
+										Type: "string",
+										Enum: []apiextv1.JSON{
+											{
+												Raw: []byte(`"nakadi"`),
+											},
+											{
+												Raw: []byte(`"sqs"`),
+											},
+											{
+												Raw: []byte(`"wal"`),
+											},
+										},
+									},
+								},
+							},
+						},
+					},
 					"teamId": {
 						Type: "string",
 					},

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

@@ -74,6 +74,7 @@ type PostgresSpec struct {
 	ServiceAnnotations    map[string]string           `json:"serviceAnnotations,omitempty"`
 	TLS                   *TLSDescription             `json:"tls,omitempty"`
 	AdditionalVolumes     []AdditionalVolume          `json:"additionalVolumes,omitempty"`
+	Streams               []Stream                    `json:"stream,omitempty"`
 
 	// deprecated json tags
 	InitContainersOld       []v1.Container `json:"init_containers,omitempty"`
@@ -224,3 +225,14 @@ type ConnectionPooler struct {
 
 	Resources `json:"resources,omitempty"`
 }
+
+type Stream struct {
+	Type      string            `json:"type"`
+	Database  string            `json:"database,omitempty"`
+	Tables    map[string]string `json:"tables,omitempty"`
+	Filter    map[string]string `json:"filter,omitempty"`
+	BatchSize uint32            `json:"batchSize,omitempty"`
+	SqsArn    string            `json:"sqsArn,omitempty"`
+	QueueName string            `json:"queueName,omitempty"`
+	User      string            `json:"user,omitempty"`
+}

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

@@ -722,6 +722,13 @@ func (in *PostgresSpec) DeepCopyInto(out *PostgresSpec) {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
+	if in.Streams != nil {
+		in, out := &in.Streams, &out.Streams
+		*out = make([]Stream, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
 	if in.InitContainersOld != nil {
 		in, out := &in.InitContainersOld, &out.InitContainersOld
 		*out = make([]corev1.Container, len(*in))
@@ -1125,6 +1132,36 @@ func (in *StandbyDescription) DeepCopy() *StandbyDescription {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+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))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+	}
+	if in.Filter != nil {
+		in, out := &in.Filter, &out.Filter
+		*out = make(map[string]string, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Stream.
+func (in *Stream) DeepCopy() *Stream {
+	if in == nil {
+		return nil
+	}
+	out := new(Stream)
+	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

pkg/apis/zalando.org/register.go

@@ -0,0 +1,6 @@
+package zalando
+
+const (
+	// GroupName is the group name for the operator CRDs
+	GroupName = "zalando.org"
+)

pkg/apis/zalando.org/v1alpha1/fabriceventstream.go

@@ -0,0 +1,88 @@
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// +genclient
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// FabricEventStream defines FabricEventStream Custom Resource Definition Object.
+type FabricEventStream struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec FabricEventStreamSpec `json:"spec"`
+}
+
+// FabricEventStreamSpec defines the specification for the FabricEventStream TPR.
+type FabricEventStreamSpec struct {
+	ApplicationId string        `json:"applicationId"`
+	EventStreams  []EventStream `json:"eventStreams"`
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// FabricEventStreamList defines a list of FabricEventStreams .
+type FabricEventStreamList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata"`
+
+	Items []FabricEventStream `json:"items"`
+}
+
+// EventStream defines the source, flow and sink of the event stream
+type EventStream struct {
+	EventStreamFlow   EventStreamFlow   `json:"flow"`
+	EventStreamSink   EventStreamSink   `json:"sink"`
+	EventStreamSource EventStreamSource `json:"source"`
+}
+
+// EventStreamFlow defines the flow characteristics of the event stream
+type EventStreamFlow struct {
+	Type             string `json:"type"`
+	DataTypeColumn   string `json:"dataTypeColumn,omitempty"`
+	DataOpColumn     string `json:"dataOpColumn,omitempty"`
+	MetadataColumn   string `json:"metadataColumn,omitempty"`
+	DataColumn       string `json:"dataColumn,omitempty"`
+	CallHomeIdColumn string `json:"callHomeIdColumn,omitempty"`
+	CallHomeUrl      string `json:"callHomeUrl,omitempty"`
+}
+
+// EventStreamSink defines the target of the event stream
+type EventStreamSink struct {
+	Type         string `json:"type"`
+	EventType    string `json:"eventType,omitempty"`
+	MaxBatchSize uint32 `json:"maxBatchSize,omitempty"`
+	QueueName    string `json:"queueName,omitempty"`
+}
+
+// EventStreamSource defines the source of the event stream and connection for FES operator
+type EventStreamSource struct {
+	Type             string           `json:"type"`
+	Schema           string           `json:"schema,omitempty" defaults:"public"`
+	EventStreamTable EventStreamTable `json:"table"`
+	Filter           string           `json:"filter,omitempty"`
+	Connection       Connection       `json:"jdbcConnection"`
+}
+
+// EventStreamTable defines the name and ID column to be used for streaming
+type EventStreamTable struct {
+	Name     string `json:"name"`
+	IDColumn string `json:"idColumn,omitempty" defaults:"id"`
+}
+
+// Connection to be used for allowing the FES operator to connect to a database
+type Connection struct {
+	Url      string `json:"jdbcUrl"`
+	SlotName string `json:"slotName"`
+	DBAuth   DBAuth `json:"databaseAuthentication"`
+}
+
+// DBAuth specifies the credentials to be used for connecting with the database
+type DBAuth struct {
+	Type        string `json:"type"`
+	Name        string `json:"name,omitempty"`
+	UserKey     string `json:"userKey,omitempty"`
+	PasswordKey string `json:"passwordKey,omitempty"`
+}

pkg/apis/zalando.org/v1alpha1/register.go

@@ -0,0 +1,46 @@
+package v1alpha1
+
+import (
+	"github.com/zalando/postgres-operator/pkg/apis/zalando.org"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/client-go/kubernetes/scheme"
+)
+
+// APIVersion of the `fabriceventstream` CRD
+const (
+	APIVersion = "v1alpha1"
+)
+
+var (
+	schemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
+	// AddToScheme applies all the stored functions to the scheme. A non-nil error
+	// indicates that one function failed and the attempt was abandoned.
+	AddToScheme = schemeBuilder.AddToScheme
+)
+
+func init() {
+	err := AddToScheme(scheme.Scheme)
+	if err != nil {
+		panic(err)
+	}
+}
+
+// SchemeGroupVersion is the group version used to register these objects.
+var SchemeGroupVersion = schema.GroupVersion{Group: zalando.GroupName, Version: APIVersion}
+
+// Resource takes an unqualified resource and returns a Group-qualified GroupResource.
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+// addKnownTypes adds the set of types defined in this package to the supplied scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&FabricEventStream{},
+		&FabricEventStreamList{},
+	)
+	metav1.AddToGroupVersion(scheme, SchemeGroupVersion)
+	return nil
+}

pkg/apis/zalando.org/v1alpha1/zz_generated.deepcopy.go

@@ -0,0 +1,227 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Connection) DeepCopyInto(out *Connection) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Connection) DeepCopy() *Connection {
+	if in == nil {
+		return nil
+	}
+	out := new(Connection)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DBAuth) DeepCopyInto(out *DBAuth) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DBAuth) DeepCopy() *DBAuth {
+	if in == nil {
+		return nil
+	}
+	out := new(DBAuth)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStream) DeepCopyInto(out *EventStream) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStream) DeepCopy() *EventStream {
+	if in == nil {
+		return nil
+	}
+	out := new(EventStream)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamFlow) DeepCopyInto(out *EventStreamFlow) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamFlow) DeepCopy() *EventStreamFlow {
+	if in == nil {
+		return nil
+	}
+	out := new(EventStreamFlow)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamSink) DeepCopyInto(out *EventStreamSink) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamSink) DeepCopy() *EventStreamSink {
+	if in == nil {
+		return nil
+	}
+	out := new(EventStreamSink)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamSource) DeepCopyInto(out *EventStreamSource) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamSource) DeepCopy() *EventStreamSource {
+	if in == nil {
+		return nil
+	}
+	out := new(EventStreamSource)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamTable) DeepCopyInto(out *EventStreamTable) {
+	*out = *in
+	return
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *EventStreamTable) DeepCopy() *EventStreamTable {
+	if in == nil {
+		return nil
+	}
+	out := new(EventStreamTable)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *FabricEventStreamSpec) DeepCopyInto(out *FabricEventStreamSpec) {
+	*out = *in
+	if in.EventStreams != nil {
+		in, out := &in.EventStreams, &out.EventStreams
+		*out = make([]EventStream, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new FabricEventStreamSpec.
+func (in *FabricEventStreamSpec) DeepCopy() *FabricEventStreamSpec {
+	if in == nil {
+		return nil
+	}
+	out := new(FabricEventStreamSpec)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *FabricEventStream) DeepCopyInto(out *FabricEventStream) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.Spec.DeepCopyInto(&out.Spec)
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new FabricEventStream.
+func (in *FabricEventStream) DeepCopy() *FabricEventStream {
+	if in == nil {
+		return nil
+	}
+	out := new(FabricEventStream)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *FabricEventStream) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *FabricEventStreamList) DeepCopyInto(out *FabricEventStreamList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]FabricEventStream, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new FabricEventStreamList.
+func (in *FabricEventStreamList) DeepCopy() *FabricEventStreamList {
+	if in == nil {
+		return nil
+	}
+	out := new(FabricEventStreamList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *FabricEventStreamList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}

pkg/cluster/cluster.go

@@ -361,6 +361,10 @@ func (c *Cluster) Create() error {
 	// something fails, report warning
 	c.createConnectionPooler(c.installLookupFunction)
 
+	if len(c.Spec.Streams) > 0 {
+		c.createStreams()
+	}
+
 	return nil
 }
 
@@ -855,6 +859,11 @@ func (c *Cluster) Update(oldSpec, newSpec *acidv1.Postgresql) error {
 		updateFailed = true
 	}
 
+	if err := c.syncStreams(); err != nil {
+		c.logger.Errorf("could not sync streams: %v", err)
+		updateFailed = true
+	}
+
 	if !updateFailed {
 		// Major version upgrade must only fire after success of earlier operations and should stay last
 		if err := c.majorVersionUpgrade(); err != nil {

pkg/cluster/database.go

@@ -33,6 +33,8 @@ const (
 	getExtensionsSQL = `SELECT e.extname, n.nspname FROM pg_catalog.pg_extension e
 	        LEFT JOIN pg_catalog.pg_namespace n ON n.oid = e.extnamespace ORDER BY 1;`
 
+	tableExistsSQL = `SELECT TRUE FROM pg_tables WHERE tablename = $1 AND schemaname = $2;`
+
 	createDatabaseSQL       = `CREATE DATABASE "%s" OWNER "%s";`
 	createDatabaseSchemaSQL = `SET ROLE TO "%s"; CREATE SCHEMA IF NOT EXISTS "%s" AUTHORIZATION "%s"`
 	alterDatabaseOwnerSQL   = `ALTER DATABASE "%s" OWNER TO "%s";`
@@ -506,6 +508,42 @@ func (c *Cluster) execCreateOrAlterExtension(extName, schemaName, statement, doi
 	return nil
 }
 
+// getExtension returns the list of current database extensions
+// The caller is responsible for opening and closing the database connection
+func (c *Cluster) tableExists(tableName, schemaName string) (bool, error) {
+	var (
+		rows   *sql.Rows
+		exists bool
+		err    error
+	)
+
+	if rows, err = c.pgDb.Query(tableExistsSQL, tableName, schemaName); err != nil {
+		return false, fmt.Errorf("could not check table for existence: %v", err)
+	}
+
+	defer func() {
+		if err2 := rows.Close(); err2 != nil {
+			if err != nil {
+				err = fmt.Errorf("error when closing query cursor: %v, previous error: %v", err2, err)
+			} else {
+				err = fmt.Errorf("error when closing query cursor: %v", err2)
+			}
+		}
+	}()
+
+	for rows.Next() {
+		if err = rows.Scan(&exists); err != nil {
+			return false, fmt.Errorf("error when processing row: %v", err)
+		}
+	}
+
+	if exists {
+		return true, nil
+	} else {
+		return false, fmt.Errorf("table %s not found", schemaName+"."+tableName)
+	}
+}
+
 // Creates a connection pool credentials lookup function in every database to
 // perform remote authentication.
 func (c *Cluster) installLookupFunction(poolerSchema, poolerUser string, role PostgresRole) error {

pkg/cluster/streams.go

@@ -0,0 +1,196 @@
+package cluster
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+	"strings"
+
+	acidv1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
+	zalandov1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
+	"github.com/zalando/postgres-operator/pkg/util/config"
+	"github.com/zalando/postgres-operator/pkg/util/constants"
+	"github.com/zalando/postgres-operator/pkg/util/k8sutil"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+var outboxTableNameTemplate config.StringTemplate = "{table}_{eventtype}_outbox"
+
+func (c *Cluster) createStreams() error {
+	c.setProcessName("creating streams")
+
+	fes := c.generateFabricEventStream()
+	_, err := c.KubeClient.FabricEventStreamsGetter.FabricEventStreams(c.Namespace).Create(context.TODO(), fes, metav1.CreateOptions{})
+	if err != nil {
+		return fmt.Errorf("could not create event stream custom resource: %v", err)
+	}
+
+	return nil
+}
+
+func (c *Cluster) syncStreamDbResources() error {
+
+	for _, stream := range c.Spec.Streams {
+		if err := c.initDbConnWithName(stream.Database); err != nil {
+			return fmt.Errorf("could not init connection to database %s specified for event stream: %v", stream.Database, err)
+		}
+
+		for table, eventType := range stream.Tables {
+			tableName, schemaName := getTableSchema(table)
+			if exists, err := c.tableExists(tableName, schemaName); !exists {
+				return fmt.Errorf("could not find table %s specified for event stream: %v", table, err)
+			}
+			// check if outbox table exists and if not, create it
+			outboxTable := outboxTableNameTemplate.Format("table", tableName, "eventtype", eventType)
+			if exists, err := c.tableExists(outboxTable, schemaName); !exists {
+				return fmt.Errorf("could not find outbox table %s specified for event stream: %v", outboxTable, err)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c *Cluster) generateFabricEventStream() *zalandov1alpha1.FabricEventStream {
+	eventStreams := make([]zalandov1alpha1.EventStream, 0)
+
+	for _, stream := range c.Spec.Streams {
+		for table, eventType := range stream.Tables {
+			streamSource := c.getEventStreamSource(stream, table, eventType)
+			streamFlow := getEventStreamFlow(stream)
+			streamSink := getEventStreamSink(stream, eventType)
+
+			eventStreams = append(eventStreams, zalandov1alpha1.EventStream{
+				EventStreamFlow:   streamFlow,
+				EventStreamSink:   streamSink,
+				EventStreamSource: streamSource})
+		}
+	}
+
+	return &zalandov1alpha1.FabricEventStream{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:        c.Name + constants.FESsuffix,
+			Namespace:   c.Namespace,
+			Annotations: c.AnnotationsToPropagate(c.annotationsSet(nil)),
+		},
+		Spec: zalandov1alpha1.FabricEventStreamSpec{
+			ApplicationId: "",
+			EventStreams:  eventStreams,
+		},
+	}
+}
+
+func (c *Cluster) getEventStreamSource(stream acidv1.Stream, table, eventType string) zalandov1alpha1.EventStreamSource {
+	streamFilter := stream.Filter[table]
+	_, schema := getTableSchema(table)
+	return zalandov1alpha1.EventStreamSource{
+		Type:             constants.EventStreamSourcePGType,
+		Schema:           schema,
+		EventStreamTable: getOutboxTable(table, eventType),
+		Filter:           streamFilter,
+		Connection:       c.getStreamConnection(stream.Database, stream.User),
+	}
+}
+
+func getEventStreamFlow(stream acidv1.Stream) zalandov1alpha1.EventStreamFlow {
+	switch stream.Type {
+	case "nakadi":
+		return zalandov1alpha1.EventStreamFlow{
+			Type:           constants.EventStreamFlowPgNakadiType,
+			DataTypeColumn: constants.EventStreamFlowDataTypeColumn,
+			DataOpColumn:   constants.EventStreamFlowDataOpColumn,
+			MetadataColumn: constants.EventStreamFlowMetadataColumn,
+			DataColumn:     constants.EventStreamFlowDataColumn}
+	case "sqs":
+		return zalandov1alpha1.EventStreamFlow{
+			Type:             constants.EventStreamFlowPgApiType,
+			CallHomeIdColumn: "id",
+			CallHomeUrl:      stream.SqsArn}
+	}
+
+	return zalandov1alpha1.EventStreamFlow{}
+}
+
+func getEventStreamSink(stream acidv1.Stream, eventType string) zalandov1alpha1.EventStreamSink {
+	switch stream.Type {
+	case "nakadi":
+		return zalandov1alpha1.EventStreamSink{
+			Type:         constants.EventStreamSinkNakadiType,
+			EventType:    eventType,
+			MaxBatchSize: stream.BatchSize}
+	case "sqs":
+		return zalandov1alpha1.EventStreamSink{
+			Type:      constants.EventStreamSinkSqsType,
+			QueueName: stream.QueueName}
+	}
+
+	return zalandov1alpha1.EventStreamSink{}
+}
+
+func getTableSchema(fullTableName string) (tableName, schemaName string) {
+	schemaName = "public"
+	tableName = fullTableName
+	if strings.Contains(fullTableName, ".") {
+		schemaName = strings.Split(fullTableName, ".")[0]
+		tableName = strings.Split(fullTableName, ".")[1]
+	}
+
+	return tableName, schemaName
+}
+
+func getOutboxTable(tableName, eventType string) zalandov1alpha1.EventStreamTable {
+	return zalandov1alpha1.EventStreamTable{
+		Name:     outboxTableNameTemplate.Format("table", tableName, "eventtype", eventType),
+		IDColumn: "id",
+	}
+}
+
+func (c *Cluster) getStreamConnection(database, user string) zalandov1alpha1.Connection {
+	return zalandov1alpha1.Connection{
+		Url:      fmt.Sprintf("jdbc:postgresql://%s.%s/%s?user=%s&ssl=true&sslmode=require", c.Name, c.Namespace, database, user),
+		SlotName: constants.EventStreamSourceSlotName,
+		DBAuth: zalandov1alpha1.DBAuth{
+			Type:        constants.EventStreamSourceAuthType,
+			Name:        c.credentialSecretNameForCluster(user, c.ClusterName),
+			UserKey:     "username",
+			PasswordKey: "password",
+		},
+	}
+}
+
+func (c *Cluster) syncStreams() error {
+
+	c.setProcessName("syncing streams")
+
+	effectiveStreams, err := c.KubeClient.FabricEventStreamsGetter.FabricEventStreams(c.Namespace).Get(context.TODO(), c.Name+constants.FESsuffix, metav1.GetOptions{})
+	if err != nil {
+		if !k8sutil.ResourceNotFound(err) {
+			return fmt.Errorf("error during reading of event streams: %v", err)
+		}
+
+		c.logger.Infof("event streams do not exist")
+		err := c.createStreams()
+		if err != nil {
+			return fmt.Errorf("could not create missing streams: %v", err)
+		}
+	} else {
+		c.syncStreamDbResources()
+		desiredStreams := c.generateFabricEventStream()
+		if reflect.DeepEqual(effectiveStreams.Spec, desiredStreams.Spec) {
+			c.updateStreams(desiredStreams)
+		}
+	}
+
+	return nil
+}
+
+func (c *Cluster) updateStreams(newEventStreams *zalandov1alpha1.FabricEventStream) error {
+	c.setProcessName("updating event streams")
+
+	_, err := c.KubeClient.FabricEventStreamsGetter.FabricEventStreams(c.Namespace).Update(context.TODO(), newEventStreams, metav1.UpdateOptions{})
+	if err != nil {
+		return fmt.Errorf("could not update event stream custom resource: %v", err)
+	}
+
+	return nil
+}

pkg/cluster/streams_test.go

@@ -0,0 +1,105 @@
+package cluster
+
+import (
+	"reflect"
+
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	acidv1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
+	fakezalandov1alpha1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/fake"
+	"github.com/zalando/postgres-operator/pkg/util/config"
+	"github.com/zalando/postgres-operator/pkg/util/constants"
+	"github.com/zalando/postgres-operator/pkg/util/k8sutil"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes/fake"
+)
+
+func newFakeK8sStreamClient() (k8sutil.KubernetesClient, *fake.Clientset) {
+	zalandoClientSet := fakezalandov1alpha1.NewSimpleClientset()
+	clientSet := fake.NewSimpleClientset()
+
+	return k8sutil.KubernetesClient{
+		FabricEventStreamsGetter: zalandoClientSet.ZalandoV1alpha1(),
+	}, clientSet
+}
+
+func TestGenerateFabricEventStream(t *testing.T) {
+	client, _ := newFakeK8sStreamClient()
+	clusterName := "acid-test-cluster"
+	namespace := "default"
+
+	pg := acidv1.Postgresql{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      clusterName,
+			Namespace: namespace,
+		},
+		Spec: acidv1.PostgresSpec{
+			Databases: map[string]string{
+				"foo": "foo_user",
+			},
+			Streams: []acidv1.Stream{
+				{
+					Type:     "nakadi",
+					Database: "foo",
+					Tables: map[string]string{
+						"bar": "stream_type_a",
+					},
+					BatchSize: uint32(100),
+					User:      "foo_user",
+				},
+				{
+					Type:     "wal",
+					Database: "foo",
+					Tables: map[string]string{
+						"bar": "stream_type_a",
+					},
+					BatchSize: uint32(100),
+					User:      "zalando",
+				},
+				{
+					Type:      "sqs",
+					Database:  "foo",
+					SqsArn:    "arn:aws:sqs:eu-central-1:111122223333",
+					QueueName: "foo-queue",
+					User:      "foo_user",
+				},
+			},
+			Users: map[string]acidv1.UserFlags{
+				"foo_user": {},
+				"zalando":  {},
+			},
+			Volume: acidv1.Volume{
+				Size: "1Gi",
+			},
+		},
+	}
+
+	var cluster = New(
+		Config{
+			OpConfig: config.Config{
+				PodManagementPolicy: "ordered_ready",
+				Resources: config.Resources{
+					ClusterLabels:        map[string]string{"application": "spilo"},
+					ClusterNameLabel:     "cluster-name",
+					DefaultCPURequest:    "300m",
+					DefaultCPULimit:      "300m",
+					DefaultMemoryRequest: "300Mi",
+					DefaultMemoryLimit:   "300Mi",
+					PodRoleLabel:         "spilo-role",
+				},
+			},
+		}, client, pg, logger, eventRecorder)
+
+	cluster.syncStreams()
+
+	streamCRD, err := cluster.KubeClient.FabricEventStreams(namespace).Get(context.TODO(), cluster.Name+constants.FESsuffix, metav1.GetOptions{})
+	assert.NoError(t, err)
+
+	result := cluster.generateFabricEventStream()
+	if !reflect.DeepEqual(result, streamCRD) {
+		t.Errorf("Malformed FabricEventStream, expected %#v, got %#v", streamCRD, result)
+	}
+}

pkg/generated/clientset/versioned/clientset.go

@@ -28,6 +28,7 @@ import (
 	"fmt"
 
 	acidv1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/acid.zalan.do/v1"
+	zalandov1alpha1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1"
 	discovery "k8s.io/client-go/discovery"
 	rest "k8s.io/client-go/rest"
 	flowcontrol "k8s.io/client-go/util/flowcontrol"
@@ -36,6 +37,7 @@ import (
 type Interface interface {
 	Discovery() discovery.DiscoveryInterface
 	AcidV1() acidv1.AcidV1Interface
+	ZalandoV1alpha1() zalandov1alpha1.ZalandoV1alpha1Interface
 }
 
 // Clientset contains the clients for groups. Each group has exactly one
@@ -43,6 +45,7 @@ type Interface interface {
 type Clientset struct {
 	*discovery.DiscoveryClient
 	acidV1          *acidv1.AcidV1Client
+	zalandoV1alpha1 *zalandov1alpha1.ZalandoV1alpha1Client
 }
 
 // AcidV1 retrieves the AcidV1Client
@@ -50,6 +53,11 @@ func (c *Clientset) AcidV1() acidv1.AcidV1Interface {
 	return c.acidV1
 }
 
+// ZalandoV1alpha1 retrieves the ZalandoV1alpha1Client
+func (c *Clientset) ZalandoV1alpha1() zalandov1alpha1.ZalandoV1alpha1Interface {
+	return c.zalandoV1alpha1
+}
+
 // Discovery retrieves the DiscoveryClient
 func (c *Clientset) Discovery() discovery.DiscoveryInterface {
 	if c == nil {
@@ -72,6 +80,7 @@ func NewForConfig(c *rest.Config) (*Clientset, error) {
 	var cs Clientset
 	var err error
 	cs.acidV1, err = acidv1.NewForConfig(&configShallowCopy)
+	cs.zalandoV1alpha1, err = zalandov1alpha1.NewForConfig(&configShallowCopy)
 	if err != nil {
 		return nil, err
 	}
@@ -88,6 +97,7 @@ func NewForConfig(c *rest.Config) (*Clientset, error) {
 func NewForConfigOrDie(c *rest.Config) *Clientset {
 	var cs Clientset
 	cs.acidV1 = acidv1.NewForConfigOrDie(c)
+	cs.zalandoV1alpha1 = zalandov1alpha1.NewForConfigOrDie(c)
 
 	cs.DiscoveryClient = discovery.NewDiscoveryClientForConfigOrDie(c)
 	return &cs
@@ -97,6 +107,7 @@ func NewForConfigOrDie(c *rest.Config) *Clientset {
 func New(c rest.Interface) *Clientset {
 	var cs Clientset
 	cs.acidV1 = acidv1.New(c)
+	cs.zalandoV1alpha1 = zalandov1alpha1.New(c)
 
 	cs.DiscoveryClient = discovery.NewDiscoveryClient(c)
 	return &cs

pkg/generated/clientset/versioned/fake/clientset_generated.go

@@ -28,6 +28,8 @@ import (
 	clientset "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned"
 	acidv1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/acid.zalan.do/v1"
 	fakeacidv1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/acid.zalan.do/v1/fake"
+	zalandov1alpha1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1"
+	fakezalandov1alpha1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/fake"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/watch"
 	"k8s.io/client-go/discovery"
@@ -86,3 +88,8 @@ var _ clientset.Interface = &Clientset{}
 func (c *Clientset) AcidV1() acidv1.AcidV1Interface {
 	return &fakeacidv1.FakeAcidV1{Fake: &c.Fake}
 }
+
+// ZalandoV1alpha1 retrieves the ZalandoV1alpha1Client
+func (c *Clientset) ZalandoV1alpha1() zalandov1alpha1.ZalandoV1alpha1Interface {
+	return &fakezalandov1alpha1.FakeZalandoV1alpha1{Fake: &c.Fake}
+}

pkg/generated/clientset/versioned/fake/register.go

@@ -26,6 +26,7 @@ package fake
 
 import (
 	acidv1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
+	zalandov1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
 	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	runtime "k8s.io/apimachinery/pkg/runtime"
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
@@ -38,6 +39,7 @@ var codecs = serializer.NewCodecFactory(scheme)
 
 var localSchemeBuilder = runtime.SchemeBuilder{
 	acidv1.AddToScheme,
+	zalandov1alpha1.AddToScheme,
 }
 
 // AddToScheme adds all types of this clientset into the given scheme. This allows composition

pkg/generated/clientset/versioned/scheme/register.go

@@ -26,6 +26,7 @@ package scheme
 
 import (
 	acidv1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
+	zalandov1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
 	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	runtime "k8s.io/apimachinery/pkg/runtime"
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
@@ -38,6 +39,7 @@ var Codecs = serializer.NewCodecFactory(Scheme)
 var ParameterCodec = runtime.NewParameterCodec(Scheme)
 var localSchemeBuilder = runtime.SchemeBuilder{
 	acidv1.AddToScheme,
+	zalandov1alpha1.AddToScheme,
 }
 
 // AddToScheme adds all types of this clientset into the given scheme. This allows composition

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/doc.go

@@ -0,0 +1,26 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// This package has the automatically generated typed clients.
+package v1alpha1

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/fabriceventstream.go

@@ -0,0 +1,184 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	"context"
+	"time"
+
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
+	scheme "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/scheme"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	rest "k8s.io/client-go/rest"
+)
+
+// FabricEventStreamsGetter has a method to return a FabricEventStreamInterface.
+// A group's client should implement this interface.
+type FabricEventStreamsGetter interface {
+	FabricEventStreams(namespace string) FabricEventStreamInterface
+}
+
+// FabricEventStreamInterface has methods to work with FabricEventStream resources.
+type FabricEventStreamInterface interface {
+	Create(ctx context.Context, fabricEventStream *v1alpha1.FabricEventStream, opts v1.CreateOptions) (*v1alpha1.FabricEventStream, error)
+	Update(ctx context.Context, fabricEventStream *v1alpha1.FabricEventStream, opts v1.UpdateOptions) (*v1alpha1.FabricEventStream, error)
+	Delete(ctx context.Context, name string, opts v1.DeleteOptions) error
+	DeleteCollection(ctx context.Context, opts v1.DeleteOptions, listOpts v1.ListOptions) error
+	Get(ctx context.Context, name string, opts v1.GetOptions) (*v1alpha1.FabricEventStream, error)
+	List(ctx context.Context, opts v1.ListOptions) (*v1alpha1.FabricEventStreamList, error)
+	Watch(ctx context.Context, opts v1.ListOptions) (watch.Interface, error)
+	Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts v1.PatchOptions, subresources ...string) (result *v1alpha1.FabricEventStream, err error)
+	FabricEventStreamExpansion
+}
+
+// fabricEventStreams implements FabricEventStreamInterface
+type fabricEventStreams struct {
+	client rest.Interface
+	ns     string
+}
+
+// newFabricEventStreams returns a FabricEventStreams
+func newFabricEventStreams(c *ZalandoV1alpha1Client, namespace string) *fabricEventStreams {
+	return &fabricEventStreams{
+		client: c.RESTClient(),
+		ns:     namespace,
+	}
+}
+
+// Get takes name of the fabricEventStream, and returns the corresponding fabricEventStream object, and an error if there is any.
+func (c *fabricEventStreams) Get(ctx context.Context, name string, options v1.GetOptions) (result *v1alpha1.FabricEventStream, err error) {
+	result = &v1alpha1.FabricEventStream{}
+	err = c.client.Get().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		Name(name).
+		VersionedParams(&options, scheme.ParameterCodec).
+		Do(ctx).
+		Into(result)
+	return
+}
+
+// List takes label and field selectors, and returns the list of FabricEventStreams that match those selectors.
+func (c *fabricEventStreams) List(ctx context.Context, opts v1.ListOptions) (result *v1alpha1.FabricEventStreamList, err error) {
+	var timeout time.Duration
+	if opts.TimeoutSeconds != nil {
+		timeout = time.Duration(*opts.TimeoutSeconds) * time.Second
+	}
+	result = &v1alpha1.FabricEventStreamList{}
+	err = c.client.Get().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Timeout(timeout).
+		Do(ctx).
+		Into(result)
+	return
+}
+
+// Watch returns a watch.Interface that watches the requested fabricEventStreams.
+func (c *fabricEventStreams) Watch(ctx context.Context, opts v1.ListOptions) (watch.Interface, error) {
+	var timeout time.Duration
+	if opts.TimeoutSeconds != nil {
+		timeout = time.Duration(*opts.TimeoutSeconds) * time.Second
+	}
+	opts.Watch = true
+	return c.client.Get().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Timeout(timeout).
+		Watch(ctx)
+}
+
+// Create takes the representation of a fabricEventStream and creates it.  Returns the server's representation of the fabricEventStream, and an error, if there is any.
+func (c *fabricEventStreams) Create(ctx context.Context, fabricEventStream *v1alpha1.FabricEventStream, opts v1.CreateOptions) (result *v1alpha1.FabricEventStream, err error) {
+	result = &v1alpha1.FabricEventStream{}
+	err = c.client.Post().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Body(fabricEventStream).
+		Do(ctx).
+		Into(result)
+	return
+}
+
+// Update takes the representation of a fabricEventStream and updates it. Returns the server's representation of the fabricEventStream, and an error, if there is any.
+func (c *fabricEventStreams) Update(ctx context.Context, fabricEventStream *v1alpha1.FabricEventStream, opts v1.UpdateOptions) (result *v1alpha1.FabricEventStream, err error) {
+	result = &v1alpha1.FabricEventStream{}
+	err = c.client.Put().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		Name(fabricEventStream.Name).
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Body(fabricEventStream).
+		Do(ctx).
+		Into(result)
+	return
+}
+
+// Delete takes name of the fabricEventStream and deletes it. Returns an error if one occurs.
+func (c *fabricEventStreams) Delete(ctx context.Context, name string, opts v1.DeleteOptions) error {
+	return c.client.Delete().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		Name(name).
+		Body(&opts).
+		Do(ctx).
+		Error()
+}
+
+// DeleteCollection deletes a collection of objects.
+func (c *fabricEventStreams) DeleteCollection(ctx context.Context, opts v1.DeleteOptions, listOpts v1.ListOptions) error {
+	var timeout time.Duration
+	if listOpts.TimeoutSeconds != nil {
+		timeout = time.Duration(*listOpts.TimeoutSeconds) * time.Second
+	}
+	return c.client.Delete().
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		VersionedParams(&listOpts, scheme.ParameterCodec).
+		Timeout(timeout).
+		Body(&opts).
+		Do(ctx).
+		Error()
+}
+
+// Patch applies the patch and returns the patched fabricEventStream.
+func (c *fabricEventStreams) Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts v1.PatchOptions, subresources ...string) (result *v1alpha1.FabricEventStream, err error) {
+	result = &v1alpha1.FabricEventStream{}
+	err = c.client.Patch(pt).
+		Namespace(c.ns).
+		Resource("fabriceventstreams").
+		Name(name).
+		SubResource(subresources...).
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Body(data).
+		Do(ctx).
+		Into(result)
+	return
+}

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/fake/doc.go

@@ -0,0 +1,26 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// Package fake has the automatically generated clients.
+package fake

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/fake/fake_fabriceventstream.go

@@ -0,0 +1,136 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	"context"
+
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	labels "k8s.io/apimachinery/pkg/labels"
+	schema "k8s.io/apimachinery/pkg/runtime/schema"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	testing "k8s.io/client-go/testing"
+)
+
+// FakeFabricEventStreams implements FabricEventStreamInterface
+type FakeFabricEventStreams struct {
+	Fake *FakeZalandoV1alpha1
+	ns   string
+}
+
+var fabriceventstreamsResource = schema.GroupVersionResource{Group: "zalando.org", Version: "v1alpha1", Resource: "fabriceventstreams"}
+
+var fabriceventstreamsKind = schema.GroupVersionKind{Group: "zalando.org", Version: "v1alpha1", Kind: "FabricEventStream"}
+
+// Get takes name of the fabricEventStream, and returns the corresponding fabricEventStream object, and an error if there is any.
+func (c *FakeFabricEventStreams) Get(ctx context.Context, name string, options v1.GetOptions) (result *v1alpha1.FabricEventStream, err error) {
+	obj, err := c.Fake.
+		Invokes(testing.NewGetAction(fabriceventstreamsResource, c.ns, name), &v1alpha1.FabricEventStream{})
+
+	if obj == nil {
+		return nil, err
+	}
+	return obj.(*v1alpha1.FabricEventStream), err
+}
+
+// List takes label and field selectors, and returns the list of FabricEventStreams that match those selectors.
+func (c *FakeFabricEventStreams) List(ctx context.Context, opts v1.ListOptions) (result *v1alpha1.FabricEventStreamList, err error) {
+	obj, err := c.Fake.
+		Invokes(testing.NewListAction(fabriceventstreamsResource, fabriceventstreamsKind, c.ns, opts), &v1alpha1.FabricEventStreamList{})
+
+	if obj == nil {
+		return nil, err
+	}
+
+	label, _, _ := testing.ExtractFromListOptions(opts)
+	if label == nil {
+		label = labels.Everything()
+	}
+	list := &v1alpha1.FabricEventStreamList{ListMeta: obj.(*v1alpha1.FabricEventStreamList).ListMeta}
+	for _, item := range obj.(*v1alpha1.FabricEventStreamList).Items {
+		if label.Matches(labels.Set(item.Labels)) {
+			list.Items = append(list.Items, item)
+		}
+	}
+	return list, err
+}
+
+// Watch returns a watch.Interface that watches the requested fabricEventStreams.
+func (c *FakeFabricEventStreams) Watch(ctx context.Context, opts v1.ListOptions) (watch.Interface, error) {
+	return c.Fake.
+		InvokesWatch(testing.NewWatchAction(fabriceventstreamsResource, c.ns, opts))
+
+}
+
+// Create takes the representation of a fabricEventStream and creates it.  Returns the server's representation of the fabricEventStream, and an error, if there is any.
+func (c *FakeFabricEventStreams) Create(ctx context.Context, fabricEventStream *v1alpha1.FabricEventStream, opts v1.CreateOptions) (result *v1alpha1.FabricEventStream, err error) {
+	obj, err := c.Fake.
+		Invokes(testing.NewCreateAction(fabriceventstreamsResource, c.ns, fabricEventStream), &v1alpha1.FabricEventStream{})
+
+	if obj == nil {
+		return nil, err
+	}
+	return obj.(*v1alpha1.FabricEventStream), err
+}
+
+// Update takes the representation of a fabricEventStream and updates it. Returns the server's representation of the fabricEventStream, and an error, if there is any.
+func (c *FakeFabricEventStreams) Update(ctx context.Context, fabricEventStream *v1alpha1.FabricEventStream, opts v1.UpdateOptions) (result *v1alpha1.FabricEventStream, err error) {
+	obj, err := c.Fake.
+		Invokes(testing.NewUpdateAction(fabriceventstreamsResource, c.ns, fabricEventStream), &v1alpha1.FabricEventStream{})
+
+	if obj == nil {
+		return nil, err
+	}
+	return obj.(*v1alpha1.FabricEventStream), err
+}
+
+// Delete takes name of the fabricEventStream and deletes it. Returns an error if one occurs.
+func (c *FakeFabricEventStreams) Delete(ctx context.Context, name string, opts v1.DeleteOptions) error {
+	_, err := c.Fake.
+		Invokes(testing.NewDeleteAction(fabriceventstreamsResource, c.ns, name), &v1alpha1.FabricEventStream{})
+
+	return err
+}
+
+// DeleteCollection deletes a collection of objects.
+func (c *FakeFabricEventStreams) DeleteCollection(ctx context.Context, opts v1.DeleteOptions, listOpts v1.ListOptions) error {
+	action := testing.NewDeleteCollectionAction(fabriceventstreamsResource, c.ns, listOpts)
+
+	_, err := c.Fake.Invokes(action, &v1alpha1.FabricEventStreamList{})
+	return err
+}
+
+// Patch applies the patch and returns the patched fabricEventStream.
+func (c *FakeFabricEventStreams) Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts v1.PatchOptions, subresources ...string) (result *v1alpha1.FabricEventStream, err error) {
+	obj, err := c.Fake.
+		Invokes(testing.NewPatchSubresourceAction(fabriceventstreamsResource, c.ns, name, pt, data, subresources...), &v1alpha1.FabricEventStream{})
+
+	if obj == nil {
+		return nil, err
+	}
+	return obj.(*v1alpha1.FabricEventStream), err
+}

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/fake/fake_zalando.org_client.go

@@ -0,0 +1,46 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1"
+	rest "k8s.io/client-go/rest"
+	testing "k8s.io/client-go/testing"
+)
+
+type FakeZalandoV1alpha1 struct {
+	*testing.Fake
+}
+
+func (c *FakeZalandoV1alpha1) FabricEventStreams(namespace string) v1alpha1.FabricEventStreamInterface {
+	return &FakeFabricEventStreams{c, namespace}
+}
+
+// RESTClient returns a RESTClient that is used to communicate
+// with API server by this client implementation.
+func (c *FakeZalandoV1alpha1) RESTClient() rest.Interface {
+	var ret *rest.RESTClient
+	return ret
+}

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/generated_expansion.go

@@ -0,0 +1,27 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1alpha1
+
+type FabricEventStreamExpansion interface{}

pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1/zalando.org_client.go

@@ -0,0 +1,95 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
+	"github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/scheme"
+	rest "k8s.io/client-go/rest"
+)
+
+type ZalandoV1alpha1Interface interface {
+	RESTClient() rest.Interface
+	FabricEventStreamsGetter
+}
+
+// ZalandoV1alpha1Client is used to interact with features provided by the zalando.org group.
+type ZalandoV1alpha1Client struct {
+	restClient rest.Interface
+}
+
+func (c *ZalandoV1alpha1Client) FabricEventStreams(namespace string) FabricEventStreamInterface {
+	return newFabricEventStreams(c, namespace)
+}
+
+// NewForConfig creates a new ZalandoV1alpha1Client for the given config.
+func NewForConfig(c *rest.Config) (*ZalandoV1alpha1Client, error) {
+	config := *c
+	if err := setConfigDefaults(&config); err != nil {
+		return nil, err
+	}
+	client, err := rest.RESTClientFor(&config)
+	if err != nil {
+		return nil, err
+	}
+	return &ZalandoV1alpha1Client{client}, nil
+}
+
+// NewForConfigOrDie creates a new ZalandoV1alpha1Client for the given config and
+// panics if there is an error in the config.
+func NewForConfigOrDie(c *rest.Config) *ZalandoV1alpha1Client {
+	client, err := NewForConfig(c)
+	if err != nil {
+		panic(err)
+	}
+	return client
+}
+
+// New creates a new ZalandoV1alpha1Client for the given RESTClient.
+func New(c rest.Interface) *ZalandoV1alpha1Client {
+	return &ZalandoV1alpha1Client{c}
+}
+
+func setConfigDefaults(config *rest.Config) error {
+	gv := v1alpha1.SchemeGroupVersion
+	config.GroupVersion = &gv
+	config.APIPath = "/apis"
+	config.NegotiatedSerializer = scheme.Codecs.WithoutConversion()
+
+	if config.UserAgent == "" {
+		config.UserAgent = rest.DefaultKubernetesUserAgent()
+	}
+
+	return nil
+}
+
+// RESTClient returns a RESTClient that is used to communicate
+// with API server by this client implementation.
+func (c *ZalandoV1alpha1Client) RESTClient() rest.Interface {
+	if c == nil {
+		return nil
+	}
+	return c.restClient
+}

pkg/generated/informers/externalversions/factory.go

@@ -32,6 +32,7 @@ import (
 	versioned "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned"
 	acidzalando "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/acid.zalan.do"
 	internalinterfaces "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/internalinterfaces"
+	zalandoorg "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/zalando.org"
 	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	runtime "k8s.io/apimachinery/pkg/runtime"
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
@@ -179,8 +180,13 @@ type SharedInformerFactory interface {
 	WaitForCacheSync(stopCh <-chan struct{}) map[reflect.Type]bool
 
 	Acid() acidzalando.Interface
+	Zalando() zalandoorg.Interface
 }
 
 func (f *sharedInformerFactory) Acid() acidzalando.Interface {
 	return acidzalando.New(f, f.namespace, f.tweakListOptions)
 }
+
+func (f *sharedInformerFactory) Zalando() zalandoorg.Interface {
+	return zalandoorg.New(f, f.namespace, f.tweakListOptions)
+}

pkg/generated/informers/externalversions/generic.go

@@ -28,6 +28,7 @@ import (
 	"fmt"
 
 	v1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
 	cache "k8s.io/client-go/tools/cache"
 )
@@ -64,6 +65,10 @@ func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource
 	case v1.SchemeGroupVersion.WithResource("postgresqls"):
 		return &genericInformer{resource: resource.GroupResource(), informer: f.Acid().V1().Postgresqls().Informer()}, nil
 
+	// Group=zalando.org, Version=v1alpha1
+	case v1alpha1.SchemeGroupVersion.WithResource("fabriceventstreams"):
+		return &genericInformer{resource: resource.GroupResource(), informer: f.Zalando().V1alpha1().FabricEventStreams().Informer()}, nil
+
 	}
 
 	return nil, fmt.Errorf("no informer found for %v", resource)

pkg/generated/informers/externalversions/zalando.org/interface.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package zalando
+
+import (
+	internalinterfaces "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/internalinterfaces"
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/zalando.org/v1alpha1"
+)
+
+// Interface provides access to each of this group's versions.
+type Interface interface {
+	// V1alpha1 provides access to shared informers for resources in V1alpha1.
+	V1alpha1() v1alpha1.Interface
+}
+
+type group struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &group{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// V1alpha1 returns a new v1alpha1.Interface.
+func (g *group) V1alpha1() v1alpha1.Interface {
+	return v1alpha1.New(g.factory, g.namespace, g.tweakListOptions)
+}

pkg/generated/informers/externalversions/zalando.org/v1alpha1/fabriceventstream.go

@@ -0,0 +1,96 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	"context"
+	time "time"
+
+	zalandoorgv1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
+	versioned "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned"
+	internalinterfaces "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/internalinterfaces"
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/generated/listers/zalando.org/v1alpha1"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	cache "k8s.io/client-go/tools/cache"
+)
+
+// FabricEventStreamInformer provides access to a shared informer and lister for
+// FabricEventStreams.
+type FabricEventStreamInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() v1alpha1.FabricEventStreamLister
+}
+
+type fabricEventStreamInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewFabricEventStreamInformer constructs a new informer for FabricEventStream type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFabricEventStreamInformer(client versioned.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredFabricEventStreamInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredFabricEventStreamInformer constructs a new informer for FabricEventStream type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredFabricEventStreamInformer(client versioned.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options v1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.ZalandoV1alpha1().FabricEventStreams(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options v1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.ZalandoV1alpha1().FabricEventStreams(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&zalandoorgv1alpha1.FabricEventStream{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *fabricEventStreamInformer) defaultInformer(client versioned.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredFabricEventStreamInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *fabricEventStreamInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&zalandoorgv1alpha1.FabricEventStream{}, f.defaultInformer)
+}
+
+func (f *fabricEventStreamInformer) Lister() v1alpha1.FabricEventStreamLister {
+	return v1alpha1.NewFabricEventStreamLister(f.Informer().GetIndexer())
+}

pkg/generated/informers/externalversions/zalando.org/v1alpha1/interface.go

@@ -0,0 +1,51 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	internalinterfaces "github.com/zalando/postgres-operator/pkg/generated/informers/externalversions/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// FabricEventStreams returns a FabricEventStreamInformer.
+	FabricEventStreams() FabricEventStreamInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// FabricEventStreams returns a FabricEventStreamInformer.
+func (v *version) FabricEventStreams() FabricEventStreamInformer {
+	return &fabricEventStreamInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}

pkg/generated/listers/zalando.org/v1alpha1/expansion_generated.go

@@ -0,0 +1,33 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by lister-gen. DO NOT EDIT.
+
+package v1alpha1
+
+// FabricEventStreamListerExpansion allows custom methods to be added to
+// FabricEventStreamLister.
+type FabricEventStreamListerExpansion interface{}
+
+// FabricEventStreamNamespaceListerExpansion allows custom methods to be added to
+// FabricEventStreamNamespaceLister.
+type FabricEventStreamNamespaceListerExpansion interface{}

pkg/generated/listers/zalando.org/v1alpha1/fabriceventstream.go

@@ -0,0 +1,105 @@
+/*
+Copyright 2021 Compose, Zalando SE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Code generated by lister-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	v1alpha1 "github.com/zalando/postgres-operator/pkg/apis/zalando.org/v1alpha1"
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/client-go/tools/cache"
+)
+
+// FabricEventStreamLister helps list FabricEventStreams.
+// All objects returned here must be treated as read-only.
+type FabricEventStreamLister interface {
+	// List lists all FabricEventStreams in the indexer.
+	// Objects returned here must be treated as read-only.
+	List(selector labels.Selector) (ret []*v1alpha1.FabricEventStream, err error)
+	// FabricEventStreams returns an object that can list and get FabricEventStreams.
+	FabricEventStreams(namespace string) FabricEventStreamNamespaceLister
+	FabricEventStreamListerExpansion
+}
+
+// fabricEventStreamLister implements the FabricEventStreamLister interface.
+type fabricEventStreamLister struct {
+	indexer cache.Indexer
+}
+
+// NewFabricEventStreamLister returns a new FabricEventStreamLister.
+func NewFabricEventStreamLister(indexer cache.Indexer) FabricEventStreamLister {
+	return &fabricEventStreamLister{indexer: indexer}
+}
+
+// List lists all FabricEventStreams in the indexer.
+func (s *fabricEventStreamLister) List(selector labels.Selector) (ret []*v1alpha1.FabricEventStream, err error) {
+	err = cache.ListAll(s.indexer, selector, func(m interface{}) {
+		ret = append(ret, m.(*v1alpha1.FabricEventStream))
+	})
+	return ret, err
+}
+
+// FabricEventStreams returns an object that can list and get FabricEventStreams.
+func (s *fabricEventStreamLister) FabricEventStreams(namespace string) FabricEventStreamNamespaceLister {
+	return fabricEventStreamNamespaceLister{indexer: s.indexer, namespace: namespace}
+}
+
+// FabricEventStreamNamespaceLister helps list and get FabricEventStreams.
+// All objects returned here must be treated as read-only.
+type FabricEventStreamNamespaceLister interface {
+	// List lists all FabricEventStreams in the indexer for a given namespace.
+	// Objects returned here must be treated as read-only.
+	List(selector labels.Selector) (ret []*v1alpha1.FabricEventStream, err error)
+	// Get retrieves the FabricEventStream from the indexer for a given namespace and name.
+	// Objects returned here must be treated as read-only.
+	Get(name string) (*v1alpha1.FabricEventStream, error)
+	FabricEventStreamNamespaceListerExpansion
+}
+
+// fabricEventStreamNamespaceLister implements the FabricEventStreamNamespaceLister
+// interface.
+type fabricEventStreamNamespaceLister struct {
+	indexer   cache.Indexer
+	namespace string
+}
+
+// List lists all FabricEventStreams in the indexer for a given namespace.
+func (s fabricEventStreamNamespaceLister) List(selector labels.Selector) (ret []*v1alpha1.FabricEventStream, err error) {
+	err = cache.ListAllByNamespace(s.indexer, s.namespace, selector, func(m interface{}) {
+		ret = append(ret, m.(*v1alpha1.FabricEventStream))
+	})
+	return ret, err
+}
+
+// Get retrieves the FabricEventStream from the indexer for a given namespace and name.
+func (s fabricEventStreamNamespaceLister) Get(name string) (*v1alpha1.FabricEventStream, error) {
+	obj, exists, err := s.indexer.GetByKey(s.namespace + "/" + name)
+	if err != nil {
+		return nil, err
+	}
+	if !exists {
+		return nil, errors.NewNotFound(v1alpha1.Resource("fabriceventstream"), name)
+	}
+	return obj.(*v1alpha1.FabricEventStream), nil
+}

pkg/util/constants/streams.go

@@ -0,0 +1,17 @@
+package constants
+
+// PostgreSQL specific constants
+const (
+	FESsuffix                     = "-event-streams"
+	EventStreamSourcePGType       = "PostgresLogicalReplication"
+	EventStreamSourceSlotName     = "fes"
+	EventStreamSourceAuthType     = "DatabaseAuthenticationSecret"
+	EventStreamFlowPgNakadiType   = "PostgresWalToNakadiDataEvent"
+	EventStreamFlowPgApiType      = "PostgresWalToApiCallHomeEvent"
+	EventStreamFlowDataTypeColumn = "data_type"
+	EventStreamFlowDataOpColumn   = "data_op"
+	EventStreamFlowMetadataColumn = "metadata"
+	EventStreamFlowDataColumn     = "data"
+	EventStreamSinkNakadiType     = "Nakadi"
+	EventStreamSinkSqsType        = "Sqs"
+)

pkg/util/k8sutil/k8sutil.go

@@ -12,8 +12,9 @@ import (
 	clientbatchv1beta1 "k8s.io/client-go/kubernetes/typed/batch/v1beta1"
 
 	apiacidv1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
-	acidv1client "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned"
+	zalandoclient "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned"
 	acidv1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/acid.zalan.do/v1"
+	zalandov1alpha1 "github.com/zalando/postgres-operator/pkg/generated/clientset/versioned/typed/zalando.org/v1alpha1"
 	"github.com/zalando/postgres-operator/pkg/spec"
 	apiappsv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
@@ -58,9 +59,11 @@ type KubernetesClient struct {
 	acidv1.OperatorConfigurationsGetter
 	acidv1.PostgresTeamsGetter
 	acidv1.PostgresqlsGetter
+	zalandov1alpha1.FabricEventStreamsGetter
 
 	RESTClient               rest.Interface
-	AcidV1ClientSet *acidv1client.Clientset
+	AcidV1ClientSet          *zalandoclient.Clientset
+	ZalandoV1Alpha1ClientSet *zalandoclient.Clientset
 }
 
 type mockSecret struct {
@@ -158,14 +161,19 @@ func NewFromConfig(cfg *rest.Config) (KubernetesClient, error) {
 
 	kubeClient.CustomResourceDefinitionsGetter = apiextClient.ApiextensionsV1()
 
-	kubeClient.AcidV1ClientSet = acidv1client.NewForConfigOrDie(cfg)
+	kubeClient.AcidV1ClientSet = zalandoclient.NewForConfigOrDie(cfg)
 	if err != nil {
 		return kubeClient, fmt.Errorf("could not create acid.zalan.do clientset: %v", err)
 	}
+	kubeClient.ZalandoV1Alpha1ClientSet = zalandoclient.NewForConfigOrDie(cfg)
+	if err != nil {
+		return kubeClient, fmt.Errorf("could not create zalando.org clientset: %v", err)
+	}
 
 	kubeClient.OperatorConfigurationsGetter = kubeClient.AcidV1ClientSet.AcidV1()
 	kubeClient.PostgresTeamsGetter = kubeClient.AcidV1ClientSet.AcidV1()
 	kubeClient.PostgresqlsGetter = kubeClient.AcidV1ClientSet.AcidV1()
+	kubeClient.FabricEventStreamsGetter = kubeClient.ZalandoV1Alpha1ClientSet.ZalandoV1alpha1()
 
 	return kubeClient, nil
 }