Move Elasticsearch to source available 🎉 🎉 (#29015)

* Move Elasticsearch to source available

server/enterprise/elasticsearch/opensearch/aggregation_scheduler.go

@@ -0,0 +1,73 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.enterprise for license information.
+
+package opensearch
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/public/shared/mlog"
+	"github.com/mattermost/mattermost/server/public/shared/request"
+	"github.com/mattermost/mattermost/server/v8/channels/app"
+	"github.com/mattermost/mattermost/server/v8/channels/jobs"
+	ejobs "github.com/mattermost/mattermost/server/v8/einterfaces/jobs"
+)
+
+type OpenSearchAggregatorScheduler struct {
+	jobServer *jobs.JobServer
+	server    *app.Server
+}
+
+func (s *OpenSearchAggregatorScheduler) Enabled(cfg *model.Config) bool {
+	if license := s.server.License(); license == nil || !*license.Features.Elasticsearch {
+		return false
+	}
+
+	if *cfg.ElasticsearchSettings.EnableIndexing {
+		return true
+	}
+
+	return false
+}
+
+func (s *OpenSearchAggregatorScheduler) NextScheduleTime(cfg *model.Config, now time.Time, pendingJobs bool, lastSuccessfulJob *model.Job) *time.Time {
+	parsedTime, err := time.Parse("15:04", *cfg.ElasticsearchSettings.PostsAggregatorJobStartTime)
+	if err != nil {
+		s.server.Log().Error("Cannot determine next schedule time for opensearch post aggregator. PostsAggregatorJobStartTime config value is invalid.", mlog.Err(err))
+		return nil
+	}
+
+	return jobs.GenerateNextStartDateTime(now, parsedTime)
+}
+
+func (s *OpenSearchAggregatorScheduler) ScheduleJob(rctx request.CTX, _ *model.Config, pendingJobs bool, _ *model.Job) (*model.Job, *model.AppError) {
+	if pendingJobs {
+		s.server.Log().Warn("An aggregator job is already running. Skipping.")
+		return nil, nil
+	}
+
+	// Don't schedule a job if we already have a running bulk indexing job
+	count, err := s.jobServer.Store.Job().GetCountByStatusAndType(model.JobStatusInProgress, model.JobTypeElasticsearchPostIndexing)
+	if err != nil {
+		return nil, model.NewAppError(
+			"ScheduleJob",
+			model.NoTranslation,
+			nil,
+			"",
+			http.StatusInternalServerError).Wrap(err)
+	}
+	if count > 0 {
+		return nil, nil
+	}
+
+	return s.jobServer.CreateJob(rctx, model.JobTypeElasticsearchPostAggregation, nil)
+}
+
+func (esi *OpensearchAggregatorInterfaceImpl) MakeScheduler() ejobs.Scheduler {
+	return &OpenSearchAggregatorScheduler{
+		server:    esi.Server,
+		jobServer: esi.Server.Jobs,
+	}
+}