PLT-7705: API to get data retention policy. (#7539)

* PLT-7705: API to get data retention policy.

* Fix review comments.

app/app.go

@@ -34,6 +34,7 @@ type App struct {
 	Brand            einterfaces.BrandInterface
 	Cluster          einterfaces.ClusterInterface
 	Compliance       einterfaces.ComplianceInterface
+	DataRetention    einterfaces.DataRetentionInterface
 	Elasticsearch    einterfaces.ElasticsearchInterface
 	Ldap             einterfaces.LdapInterface
 	Metrics          einterfaces.MetricsInterface
@@ -103,10 +104,16 @@ func RegisterComplianceInterface(f func(*App) einterfaces.ComplianceInterface) {
 	complianceInterface = f
 }
 
-var jobsDataRetentionInterface func(*App) ejobs.DataRetentionInterface
+var dataRetentionInterface func(*App) einterfaces.DataRetentionInterface
 
-func RegisterJobsDataRetentionInterface(f func(*App) ejobs.DataRetentionInterface) {
-	jobsDataRetentionInterface = f
+func RegisterDataRetentionInterface(f func(*App) einterfaces.DataRetentionInterface) {
+	dataRetentionInterface = f
+}
+
+var jobsDataRetentionJobInterface func(*App) ejobs.DataRetentionJobInterface
+
+func RegisterJobsDataRetentionJobInterface(f func(*App) ejobs.DataRetentionJobInterface) {
+	jobsDataRetentionJobInterface = f
 }
 
 var jobsElasticsearchAggregatorInterface func(*App) ejobs.ElasticsearchAggregatorInterface
@@ -183,9 +190,11 @@ func (a *App) initEnterprise() {
 			a.Saml.ConfigureSP()
 		})
 	}
-
-	if jobsDataRetentionInterface != nil {
-		a.Jobs.DataRetention = jobsDataRetentionInterface(a)
+	if dataRetentionInterface != nil {
+		a.DataRetention = dataRetentionInterface(a)
+	}
+	if jobsDataRetentionJobInterface != nil {
+		a.Jobs.DataRetentionJob = jobsDataRetentionJobInterface(a)
 	}
 	if jobsElasticsearchAggregatorInterface != nil {
 		a.Jobs.ElasticsearchAggregator = jobsElasticsearchAggregatorInterface(a)

app/data_retention.go

@@ -0,0 +1,18 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	"net/http"
+
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (a *App) GetDataRetentionPolicy() (*model.DataRetentionPolicy, *model.AppError) {
+	if a.DataRetention == nil {
+		return nil, model.NewAppError("App.GetDataRetentionPolicy", "ent.data_retention.generic.license.error", nil, "", http.StatusNotImplemented)
+	}
+
+	return a.DataRetention.GetPolicy()
+}