Move Elasticsearch to source available 🎉 🎉 (#29015)

* Move Elasticsearch to source available

server/enterprise/elasticsearch/init.go

@@ -0,0 +1,36 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.enterprise for license information.
+
+package elasticsearch
+
+import (
+	"github.com/mattermost/mattermost/server/v8/enterprise/elasticsearch/elasticsearch"
+	"github.com/mattermost/mattermost/server/v8/enterprise/elasticsearch/opensearch"
+
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/v8/channels/app"
+	"github.com/mattermost/mattermost/server/v8/channels/app/platform"
+	ejobs "github.com/mattermost/mattermost/server/v8/einterfaces/jobs"
+	"github.com/mattermost/mattermost/server/v8/platform/services/searchengine"
+)
+
+func init() {
+	platform.RegisterElasticsearchInterface(func(s *platform.PlatformService) searchengine.SearchEngineInterface {
+		if *s.Config().ElasticsearchSettings.Backend == model.ElasticsearchSettingsESBackend {
+			return &elasticsearch.ElasticsearchInterfaceImpl{Platform: s}
+		}
+		return &opensearch.OpensearchInterfaceImpl{Platform: s}
+	})
+	app.RegisterJobsElasticsearchIndexerInterface(func(s *app.Server) ejobs.IndexerJobInterface {
+		if *s.Config().ElasticsearchSettings.Backend == model.ElasticsearchSettingsESBackend {
+			return &elasticsearch.ElasticsearchIndexerInterfaceImpl{Server: s}
+		}
+		return &opensearch.OpensearchIndexerInterfaceImpl{Server: s}
+	})
+	app.RegisterJobsElasticsearchAggregatorInterface(func(s *app.Server) ejobs.ElasticsearchAggregatorInterface {
+		if *s.Config().ElasticsearchSettings.Backend == model.ElasticsearchSettingsESBackend {
+			return &elasticsearch.ElasticsearchAggregatorInterfaceImpl{Server: s}
+		}
+		return &opensearch.OpensearchAggregatorInterfaceImpl{Server: s}
+	})
+}