[Feature] Agency Cache Poll EE Extension (#1330)

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## [master](https://github.com/arangodb/kube-arangodb/tree/master) (N/A)
 - (Feature) AgencyCache Interface
+- (Feature) Agency Cache Poll EE Extension
 
 ## [1.2.29](https://github.com/arangodb/kube-arangodb/tree/1.2.29) (2023-06-08)
 - (Maintenance) Add govulncheck to pipeline, update golangci-linter

pkg/deployment/agency/cache/config.go

@@ -24,26 +24,22 @@ import (
 	"time"
 
 	"github.com/spf13/cobra"
-
-	"github.com/arangodb/kube-arangodb/pkg/util"
-	"github.com/arangodb/kube-arangodb/pkg/version"
 )
 
 func Init(cmd *cobra.Command) error {
 	f := cmd.PersistentFlags()
 
-	ee := version.GetVersionV1().IsEnterprise()
+	f.Bool("agency.poll-enabled", false, "The Agency poll functionality enablement (EnterpriseEdition Only)")
 
-	f.BoolVar(&global.PollEnabled, "agency.poll-enabled", ee, "The Agency poll functionality enablement (EnterpriseEdition Only)")
-
-	if !ee {
-		if err := f.MarkHidden("agency.poll-enabled"); err != nil {
-			return err
-		}
+	if err := f.MarkHidden("agency.poll-enabled"); err != nil {
+		return err
+	}
+	if err := f.MarkDeprecated("agency.poll-enabled", "Flag moved to feature"); err != nil {
+		return err
 	}
 
-	f.DurationVar(&global.RefreshDelay, "agency.refresh-delay", util.BoolSwitch(ee, 500*time.Millisecond, 0), "The Agency refresh delay (0 = no delay)")
-	f.DurationVar(&global.RefreshDelay, "agency.refresh-interval", 0, "The Agency refresh interval (0 = do not refresh)")
+	f.DurationVar(&global.RefreshDelay, "agency.refresh-delay", 500*time.Millisecond, "The Agency refresh delay (0 = no delay)")
+	f.DurationVar(&global.RefreshInterval, "agency.refresh-interval", 0, "The Agency refresh interval (0 = do not refresh)")
 
 	return nil
 }
@@ -55,7 +51,6 @@ func GlobalConfig() Config {
 }
 
 type Config struct {
-	PollEnabled     bool
 	RefreshDelay    time.Duration
 	RefreshInterval time.Duration
 }

pkg/deployment/agency/loader.community.go

@@ -0,0 +1,28 @@
+//
+// DISCLAIMER
+//
+// Copyright 2016-2023 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+//go:build !enterprise
+// +build !enterprise
+
+package agency
+
+func getLoaderBase[T interface{}]() StateLoader[T] {
+	return NewSimpleStateLoader[T]()
+}

pkg/deployment/agency/loader.go

@@ -39,14 +39,6 @@ func getLoader[T interface{}]() StateLoader[T] {
 	return loader
 }
 
-func getLoaderBase[T interface{}]() StateLoader[T] {
-	if agencyCecheConfig.GlobalConfig().PollEnabled {
-		return NewSimpleStateLoader[T]()
-	} else {
-		return NewSimpleStateLoader[T]()
-	}
-}
-
 type StateLoader[T interface{}] interface {
 	State() (*T, uint64, bool)
 

pkg/deployment/features/agency.go

@@ -0,0 +1,38 @@
+//
+// DISCLAIMER
+//
+// Copyright 2023 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package features
+
+func init() {
+	registerFeature(agencyPoll)
+}
+
+var agencyPoll = &feature{
+	name:                       "agency-poll",
+	description:                "Enable Agency Poll for Enterprise deployments",
+	version:                    "3.5.0",
+	enterpriseRequired:         false,
+	operatorEnterpriseRequired: true,
+	enabledByDefault:           false,
+}
+
+func AgencyPoll() Feature {
+	return agencyPoll
+}

pkg/deployment/features/features.go

@@ -1,7 +1,7 @@
 //
 // DISCLAIMER
 //
-// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
+// Copyright 2016-2023 ArangoDB GmbH, Cologne, Germany
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import (
 	"github.com/arangodb/go-driver"
 
 	api "github.com/arangodb/kube-arangodb/pkg/apis/deployment/v1"
+	"github.com/arangodb/kube-arangodb/pkg/version"
 )
 
 const (
@@ -38,6 +39,7 @@ type Feature interface {
 	Description() string
 	Version() driver.Version
 	EnterpriseRequired() bool
+	OperatorEnterpriseRequired() bool
 	EnabledByDefault() bool
 	Enabled() bool
 	EnabledPointer() *bool
@@ -48,12 +50,12 @@ type Feature interface {
 }
 
 type feature struct {
-	name, description                             string
-	version                                       driver.Version
-	enterpriseRequired, enabledByDefault, enabled bool
-	deprecated                                    string
-	constValue                                    *bool
-	hidden                                        bool
+	name, description                                                         string
+	version                                                                   driver.Version
+	enterpriseRequired, operatorEnterpriseRequired, enabledByDefault, enabled bool
+	deprecated                                                                string
+	constValue                                                                *bool
+	hidden                                                                    bool
 }
 
 func (f feature) ImageSupported(i *api.ImageInfo) bool {
@@ -73,6 +75,13 @@ func (f feature) Supported(v driver.Version, enterprise bool) bool {
 }
 
 func (f feature) Enabled() bool {
+	if f.operatorEnterpriseRequired {
+		// Operator Enterprise is required for this feature
+		if !version.GetVersionV1().IsEnterprise() {
+			return false
+		}
+	}
+
 	if f.constValue != nil {
 		return *f.constValue
 	}
@@ -96,6 +105,10 @@ func (f feature) EnterpriseRequired() bool {
 	return f.enterpriseRequired
 }
 
+func (f feature) OperatorEnterpriseRequired() bool {
+	return f.operatorEnterpriseRequired
+}
+
 func (f feature) EnabledByDefault() bool {
 	return f.enabledByDefault
 }